Aperture Export Resolution...

Does anyone know how to change the export resolution in Aperture? Any versions I export are 72 DPI regardless of format (tiff, jpeg, psd), while the RAW masters export at full 300 DPI resolution.
Choose an image, and right-click on it. Select Output>Export Version. I've tried every option, and it always exports at 72 DPI. I know this because I open the exported image in Preview or Photoshop CS2, and the information on the file is that it is 72 DPI.
I've checked in the preferences, but can't find any way of changing this. It seems rediculous that Apple would put out Pro software for Photographers that would only export files at web res.
Anyone know how to change this?
20" iMac G5 Mac OS X (10.4.5)

Okay, so there are thrid party apps to do it, and I
greatly appreciate you explaining them, but is there
no way to set Aperture to export at 300 dpi for
everything except web and e-mail outputs?
I guess what I'm getting at is that Aperture is
supposed to be the ultimate workflow solution,
eliminating all other applications except Photoshop.
Surely there must be way to set Aperture to export
at 300 dpi.
The thing is that DPI really means nothing independent of resolution - it is only a kind of hint to other programs as to what the size may be, but does not by itslef really control print size or anything else. Just a default size in some applications. Even though I have given a workaround for setting DPI I really don't use it myself as I simply export and then use the images in other programs, like InDesign, or send them off for printing.
Aperture currently simply ignores these values, passing them on from the original RAW file. So right now it has no way to alter DPI as it does not know what it is for any file. Aperture does not care, it does not need to as it scales images up or down as required by the task at hand.
I agree that Aperture should have some way to select a DPI for export, or possibly let you edit the metadata value for the resolution in a version (along with lots of other metadata). But I also think it really doesn't matter that much, as all that really matters in the end is how many pixels there are in the image you are outputting. That is something Aperture does let you control (though not quite as well for upsampling as I would like).
Does this make sense, or am I not understanding
something here?
No, you are understanding the current limitations perfectly. What is it you need the DPI set specifically for?

Similar Messages

Poor quality conversion/downsizing with Aperture Export

I have noticed a difference in quality of exported JPG files, depending on if I downsize them manually, ahead of time, using an external editor (PSE) or if I let Aperture downsize them during export. The images downsized in PSE are noticeably sharper than the ones downsized by Aperture. Originals are high res JPG files from my D90 that I have converted to TIFF and touched up using PSE as an external editor. I would like to keep the full size, adjusted TIFF file as a master and just export to whatever size JPG is needed at the time. With the low quality Aperture exports (compared to downsizing first in PSE), I am having to individually downsize each TIFF in PSE prior to exporting as a JPG in “original size” mode (vs. letting Aperture handle the downsizing). Has anyone else noticed this degradation when exporting/downsizing in Aperture2? Is there any work around? Any comments would be appreciated! Thanks! (All export was done in JPG quality 10, with no pre-sharpening performed.)

Firstly, using window>show movie info, find out what the current bit rate is of the original movie.
When you come to export, keep the bit rate as close as possible to the original bit rate, keep the resolution the same as well as the frame rate. You should hopefully get much better quality.

Aperture export to Photoshop error

Hi all,
This is a bit of a very specialised issue that I noticed - so only an issue for the very high end user. But big enough of a problem that I have to change to Lightroom until this issue is fixed...
Following Problem statement. I get an error in calcutions in advanced Alpha Channel Masking... see attached images to understand the problem
Here is what I do to get the Alpha Mask:
1) From Aperture export Image to Photoshop
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3) You select Green Channel for highest contrast between rash and skin
4) You go in Calculations and on merged layers in inverted mode you do a multiply calculation into a new selection
5) You get a selection. You want to refine it
6) You do calculations again and this time on the selection layers (not inverted) you do an overlay calculations into a new channel
You see that the Mask has square patches - misaligned information ...
I don't understand what they are because when you look in RGB there is no error.
Also note that this must be related to Aperture - because when I import the .NEF file directly from the camera into Photoshop or via Lightroom I don't get this issue.
(I am using a NIKON D700)
Second more minor but annoying issue - skin colours are way more yellowish than in Lightroom ...
Can anyone fix this or point to how it can be fixed? Should Apple be notified?

I also wanted to add an image of how the masks looks like - i.e. without issues - when you import into Photoshop via Lightroom

Set exported resolution for each image within InDesign

I'm generating a document in InDesign destined only for the screen (as a PDF) and I'm wondering whether in CS6 the user can set the exported resolution separately for each image. i.e click on a image and set the resolution for that image. Reason: to allow end-viewers to zoom in on certain images and retain quality.
And while I'm on the subject of changing resolution, a few years ago someone wrote a script for me (in response to a post), that when you clicked on an image within InDesign, resampled the original to 300 dpi, saved it, and made the necessary adjustments in InDesign so the image stayed the same size.
Can CS6 do that? Or do I need to dig up the old script?

> ... destined only for the screen (as a PDF) ...
The developers of PDF will thank you for that statement!

Export resolution stumper. . . .

I'm not very proficient at iMovie, so I'm perplexed by how I increased my export resolution the last time I created a movie.
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Thanks for the help!

Then I would try - just to in-circle the possibly culprit
• Start a new User Account (Apple-menu / System Pref. / Accounts / Plus sign)
• Log out of this Account and into the New one (Apple-menu down to las option)
• Now start iMovie and import some material and re-try Share function
If this now works - then my Guess is that the problem is in
• iMovie pref file/s - or -
• iMovie Casche files
in the old account - and that trashing them will be the medicine (as iMovie now has to create New and error free ones)
This is a very common problem - most often due to - Panic/Forced Quits - as they induces errors in lot's of places ( finally adding up to a Major Break-down ). So by
• Trashing these files
• Running - Repair Permissions (Disk Util tool)
• Running - Repair Hard Disk (Disk Util tool - but now You first has to start Mac from DVD or ext. Hard Disk)
I can keep this Major problem away as long as possibly.
(and only Force Quit - when there are no other option (as just waiting it out)
Yours Bengt W

DPI and PPI in Aperture 'Export' and 'Print' windows

Hi,
As mentioned in an earlier post, I just bought an Epson 3880 printer and some Epson Hot Press paper, so now I have to pay attention to PPI (term used for displays) and DPI (term used for printers).
In Aperture however, files being exported require DPI specs(!), while files being printed require that we specify PPI specs. How is that?
Also, my Epson manual indicates that I can print at 5 distinct "DPI" settings, from 180 to 2880. My Aperture Print window, however, only offers 3 options with 360 "PPI" as the highest (considered Draft quality by Epson - if "DPI"), plus a 4th referred to as Custom.
Also, I have a note jotted down a while back that says: "1440 dpi for most papers with 240 dpi files, at 2880 if 360" - whatever that meant 6 months ago at an Epson 3880 seminar, before I got the printer.
Can you guys sort this out for me? Please?
Thanks a lot,
Raphael

I'm not at my studio. My current driver is 8.x. The newest driver is 9.33. My remarks here may not fit with your more current version of the driver (but that would surprise me — the printer came out about 4 years ago, iirc).
The profiles are not, afaik, included with the driver, at least when you download it from Epson's site.
There are two profiles for each Epson Fine Art paper — one at 1440 and one at 2880. You should try each with every kind of print you make, and determine which is better. IME, _for my needs_, 2880 was never worse. I use the 2880 profiles.
The profile is selected from the "Color Profile" drop-down at the top of the "Rendering" section of Aperture's "Print" dialog.
(Set "Render Intent" to "Perceptual" for, in general, photographs or anything with smoothly graduated changes in color. Set "Render Intent" to "Relative Colorimetric" for, in general, graphics or anything with smooth areas of constant color and sharp transitions between areas of color. Generally, if "Render Intent" is "Perceptual", check "Black Point Compensation"; otherwise uncheck it.)
Leave "Print Resolution" at "Auto". I know of no reason to ever change this. (I don't, in fact, know what this control does, and have never changed it.)
When you click "Print" in Aperture's "Print" dialog, a short dialog opens asking you if you want to save any changes you made to your Preset. I always save my changes. Prints often need to be immediately remade — all transitions of data from electronic to physical media are problematic — and I like to return to my Preset ready to print the same Image(s) again.
When that dialog closes, the OS print dialog opens. Your 3880 printer should already be selected in the "Printer" drop-down. You need to create and should save an OS Preset for your paper. Note that on the "Color Matching" page (this dialog has pages, not tabs; direct complaints to Cupertino), all (two) options should be grayed-out. This indicates that Aperture is handling color matching, which is what you want (for best prints and anything approaching a color-calibrated workflow). On the "Paper Handling" page, the "Destination Paper Size" drop-down is grayed-out, but should show you the selection you made in the Aperture Print dialog. The "Printer Settings" page has two tabs. On the "Basic" tab, in the "Media Type" drop-down, select your paper ("Fine Art Paper ▹ Hot Press [Bright or Natural])*. The "Ink" drop-down should be grayed-out, but show "Matte". Matte is proper selection for Hot Press [Bright or Natural]. This dialog knows this from your color profile selection in the Aperture Print dialog. Chose "16-bit" output and any other options your want (you can experiment; I find no difference). I ignore the warning about print quality at the bottom area — this has never been an issue. On the "Advanced" tab of the "Printer Settings" page, it should tell you that "Epson Driver Color Management is Off". That's what you want. You want Aperture to manage the color.
Save your OS print dialog Preset. Use it every time you print to the same paper.
*If you cannot select your paper, you have not selected the correct paper size in the "Printer" section of Aperture's Print dialog. Note that the "Paper Size" selection includes not only the paper size, but also whether the feed is by sheet-feeder or manual, and whether or not the print is borderless. (I didn't design this; I assume there are reasons to have shoe-horned these options into the "Paper Size" selection.
This is all tricky on top of being actually complex and next to being new. It takes everyone time and mistakes (read: ink and paper) to canalize a flow that works for producing the prints they want. I hope this gets you there a little faster. Report back with what doesn't work.
—Kirby.

Custom book export resolution problem in PDF - only 150DPI!?

I've been using the custom book option and when it came to exporting my PDF I have run into a problem involving the undocumented output resolution of a PDF at a given size. The custom book dialog allows you to create a book with a certain size in inches, but this really has no real meaning since the resolution of that output cannot also be specified in either the layout option or the print dialog. For example is it 150dpi or 300dpi? From some investigation it appears to be locked at 150DPI.
Now I would have thought that Aperture was intelligent enough to just treat the album layout (this is my assumption) as some kind of smart object, where the layout is resolution independent and the final output resolution can be determined when printing to a printer or PDF. In that case the dialog for the setup of the custom size is correct. However, there is no option that I can see in the print dialog to actually specify the output resolution; Aperture is left to its own devices to specify an output resolution, which is undocumented.
I use a printer that accepts JPG or TIF files and I need 300dpi for an album size of 10x13 inches. This equates to 3900x3000 pixels per page. I am able to export to PDF in the print dialog and then used an automator action to export each page of the PDF as JPG and reimported back into Aperture 2 in the same action. In the PDF>JPG conversion option there is the ability to set the DPI to 300. That works fine and the resulting JPG images show as 300dpi (3900x3000px). When looking at the images though they look a little soft, which leads me to believe that my action was simply interpolating a 150dpi image in the PDF into 300dpi.
So to test this, I noticed that if I exported just one page of the album as a PDF and opened the PDF in Preview it does indeed tell you that it is 13x10 inches (no mention of the pixel resolution though). So, you can actually reimport a single page PDF into Aperture and if you do this it appears that the actual resolution is 1950x1500 and that equates to 150dpi for a 13x10 inch layout.
So there are two things that could possibly be going on here:
1. The actual layout of the album is locked at 150DPI and the save to PDF simply takes that and exports a PDF at that resolution.
2. The layout of the album is resolution independent, the size of the album (in the custom dialog) simply controls the aspect of the page layout, and the print dialog (save to PDF) is exporting as 150DPI as default. When I run my automator action (these are the Leopard PDF actions), the save each page to JPG action is up-res'ing the image to 300dpi.
This is where I need help. Is 1 or 2 (or something else?) happening. Also, does the PDF save as JPG12? That too is undocumented.
If number 1 is happening I may have to set my album size to 26x20inches to get a 10x13 inch page at 300dpi.
If number 2 is happening I need to find a PDF/TIFF/JPEG print driver to enable me to export at 300dpi as the print dialog in not standard (and we don't get the nice 'save as' drop down where we could do other things. So far my search has led me to CUPS-PDF, but that still doesn't allow for resolution to be set: http://www.codepoetry.net/projects/cups-pdf-for-mosx
Why can't Apple just figure this thing out correctly and allow the resolution to be specified by the user - what an oversight given all of the feedback requests for the custom album tool. We need 300dpi as a minimum as we can always down-res if we want.
Any ideas? I've got albums to send to clients! Help!
Thanks

When you import any PDF into Aperture, I think it rasterizes any PDF you import to a 150dpi flat image on import, even if it was a high res PDF to begin with. But theres the thing, PDFs don't have dpi (as such). Any shapes or text is a vector so don't have a DPI as they'll scale when printed. The images use their DPI when they were imported from the program that created the PDF.
So I did a quick test and put a page I made from Aperture in to Acrobat and ran a preflight check on all images to check the resolution. It came back at 349.956 ppi, so this example was over 350dpi.
I've attached the screenshot
Jason

Aperture Exporting JPEG's from RAW: file size and quality questions?

Hey Everyone,
So, I'm using Aperture 2 and I've got some questions about exporting from RAW to JPEG. I shoot with a Nikon D70 so original RAW files are 5-6mb in size. After doing some basic post processing when I export the pics at "full size" with picture quality of 11 out of 12 then the resulting JPEG is about half the file size of the original RAW file. For example a 5.6mb RAW becomes a 2.6mb JPEG. The resolution in pixels per inch and and the overall image size remain unchanged. Have I lost picture quality due to the exporting JPEG being smaller in file size?
My friend who works with me prefers to edit in Photoshop and when he follows the same workflow his saved JPEG from the identical RAW file in Photoshop is minimally smaller in file size, say 5.6mb to 5.3mb. He's telling me that my Aperture edited photos are losing quality and resolution.
Is he right, are my pics of lesser quality due to being a smaller file size? I've always been told that the quality of a picture is not in the mbs, but the pixel density.
I've bee told that Aperture has a better compression engine and that the resulting files are of the exact same quality because the PPI and image size are the same. Is that what explains the much smaller file sizes in Aperture?
I tried changing the picture quality in the export menu to 12 out of 12, but the resulting JPEG then becomes larger than the original RAW at over 7mbs.
Can someone please help me understand this better? I don't want to lose picture quality if that is indeed what is happening.
Thanks in advance for your help.

mscriv wrote:
So, I'm using Aperture 2 and I've got some questions about exporting from RAW to JPEG. I shoot with a Nikon D70 so original RAW files are 5-6mb in size. After doing some basic post processing when I export the pics at "full size" with picture quality of 11 out of 12 then the resulting JPEG is about half the file size of the original RAW file. For example a 5.6mb RAW becomes a 2.6mb JPEG. The resolution in pixels per inch and and the overall image size remain unchanged. Have I lost picture quality due to the exporting JPEG being smaller in file size?
JPEG is a "lossy" file compression algorithm. Whether Aperture or PS, *every time a JPEG is saved some loss occurs*, albeit minimal at the 11 or 12 level of save, huge losses at low save levels. Some images (sky, straight diagonal lines, etc.) are more vulnerable to showing visible jpeg artifacts.
My friend who works with me prefers to edit in Photoshop and when he follows the same workflow his saved JPEG from the identical RAW file in Photoshop is minimally smaller in file size, say 5.6mb to 5.3mb. He's telling me that my Aperture edited photos are losing quality and resolution.
*Both of you are losing image data when you save to jpeg.* IMO the differences between the apps is probably just how the apps work rather than actually losing significantly more data. The real image data loss is in using JPEG at all!
Is he right, are my pics of lesser quality due to being a smaller file size?
I doubt it.
I've always been told that the quality of a picture is not in the mbs, but the pixel density.
The issue here is not how many pixels (because you are not varying that) but how much data each pixel contains. In this case once you avoid lossy JPEG the quality mostly has to do with different RAW conversion algorithms. Apple and Adobe both guess what Nikon is up to with the proprietary RAW NEF files and the results are different from ACR to Apple to Nikon. For my D2x pix I like Nikon's conversions the best (but Nikon software is hard to use), Aperture second and Adobe ACR (what Photoshop/Bridge uses) third. I 98% use Aperture.
I tried changing the picture quality in the export menu to 12 out of 12, but the resulting JPEG then becomes larger than the original RAW at over 7mbs. Can someone please help me understand this better? I don't want to lose picture quality if that is indeed what is happening.
JPEG is a useful format but lossy. Only use it as a _last step_ when you must save files size for some reason and are willing to accept the by-definition loss of image data to obtain smaller files (such as for web work or other on-screen viewing). Otherwise (especially for printing) save as TIFF or PSD which are non-lossy file types, but larger.
As to the Aperture vs. ACR argument, RAW-convert the same original both ways, save as TIFF and see if your eyes/brain significantly prefer one over the other. Nikon, Canon etc. keep proprietary original image capture data algorithms secret and each individual camera's RAW conversion is different.
HTH
-Allen

Aperture exports jpeg files larger than original RAW files

Can anyone tell me why a RAW file (10.6mb), when exported as a jpeg (10.8mb) from Aperture ends up larger than the original RAW file. The same RAW file when opened and then saved as a jpeg (6.4mb) in Photoshop is a lot smaller. The photo dimensions and resolution are the same in both saved files (34.5mb open file 300dpi 4256 x 2831 pix). I have tried this on several photos, all with similar results. For information I am saving the photos in both Photoshop and Aperture at 300dpi, original size and at a quality setting of 12. In these examples/tests I have done no work to the photos, obviously the file sizes increase after work has been carried out on the photos (in both Ps & Aperture)
Almost doubling the size of saved jpegs has a massive implication on my library and may be one reason to consider Adobe Lightroom as this gives similar jpeg file sizes as Photoshop, i.e. almost half the size of the original RAW file
Reducing the quality setting on saved jpegs is an obvious way to reduce file size, but not answering the question of the considerable discrepancy when saving to the same quality in different software
Is this a feature of Aperture and nothing can be done about it ? I would prefer to use Aperture but cannot cope with the large jpeg sizes !
Any comments would be much appreciated - thank you
Nick

Think you might be right Allen - The 12 quality saved jpegs seem to be pretty high quality, closer to the original than maybe the files saved in Ps at quality 12. I have just run an identical set of processing actions on all the files in Photoshop and the jpegs previously saved in Aperture at 12, 11 and even 8 quality settings seem to be better than the same files saved at 12 in Ps
Bizarrely the file size drops from 10.6mb at quality setting 12 in Aperture, to 3.2mb when saved just one notch down at quality setting 11 in Aperture. That is a massive drop, esp considering the next one down, saving at quality 10 results in a 2.8mb file
rw just ran some checks and tests on the file export settings and file sizes in Aperture, on a file I sent him, and we get the same results. So at least my version of Aperture is not up the wall !!
Would be useful to have the explanations from Apple as to the vast variance in settings and file sizes, but I guess we will just have to keep guessing - and buying more and more hard drives for all the large files
I am considering keeping the RAW originals in future, and I suppose in this case I need only save smaller jpegs, and issue at whatever size they are needed at the time - just needs a bit of planning to look after an ever increasing collection, which is about to have two sets of images added at a time now. Added to the already amassed 80 000 images at last count !)
Thanks
Nick

Aperture Image Resolution Problem

I know there have been a lot of posts about image resolution, but I haven't found an answer to my problem.
I use a DLSR and and shoot in RAW and/or maximum resolution JPG. When imported to Aperture, the file size is usually in the 10-15MP range. However, when I try to email photos in their "actual size" or export photos to BookSmart (blurb) to create a photo album, the photos become compressed (to about 1MP). According to blurb support, my 10MP images are only 96 dpi, and not enough for a high resolution image.
I have my image export presets set to highest quality, original size, and 300 dpi, so I don't know what the problem is. Can anyone help me?

Agree.
OP:
A quick review, just so we are on the same page.
Digital image files have two "sizes".
The actual image size is measured in pixels. The digital image comprises a grid of colored dots. Each dot is a pixel, which is short for picture ellement. The dimensions of the image are given as so many pixels in one direction (usually height) by so many pixels in another direction (usually width), e.g.: 600 x 800 pixels, or 4,000 x 6,000 pixels. The overall "size" of the image is calculated by multiplying the height by the width. In the examples given, the first image is (600 x 800 = ) 480,000 pixels. The second image is (4,000 x 6,000 = ) 24,000,000 pixels.
That's a lot of pixels. The size is often given in megapixels, where 1,000,000 pixels = 1 megapixel (abbreviated MP). So the first image is approximately half a megapixel, and the second one is 24 MP.
Pixels themselves have no other unit of measurement. There is no way from the pixel count to know how many inches (or centimeters) an image will be when printed or shown on a screen. In order to determine that, you must have the pixels-per-inch (PPI) of the printer or screen (or projector, or any other display device). A 600 x 800 px. image, at 100 PPI, will be 6 x 8 inches.
Pixels are device independent. PPI tells some programs and devices how big to display (or print) an image.
The other image file size measures how much data is in the file. Data is measured in bytes. One thousand bytes is a megabyte, abbreviated "MB".
Generally, the larger the image size, the larger the file size. But this is not necessarily so, and shouldn't be used as anything but a very general guide.
Your question is about resolution, which is a question of density: how many pixels there are in a given area. This is commonly measured in PPI. Resolution and file size are independent.
Message was edited by: Kirby Krieger

Aperture changes resolution of pictures

I'm probably missing something really easy, but I don't use Aperture regularly, so....
I take pics with 180x180 ppi, 1920 x 1080. I import one into Aperture to do some "enhancing" and export the enhanced version. The picture now is 72 x 72 ppi. If I export the original, it is still 180x180; but that isn't the enhanced version. I cannot find a setting/option to tell Aperture to leave that alone - I don't appreciate having a picture resolution changed without my doing it.
Is there a way to leave the resolution untouched even if I make changes to a picture and where can I set it?

Hi babowa,
how are you exporting the enhanced version? Using the command "File > Export > Version" with the "Export Preset" set to "Jpeg - Original Size"?
Then check the "DPI" settings for this preset. That is by default set to 72 dpi, and change it 180.
You can do that by selecting this preset on export, then changing the preset to "Edit". In the "Image Export - Edit" panel you can duplicate this preset and modify the copy. Simply set the dpi to 180 DPI. Then use your own preset.
Regards
Léonie

Can you change the export resolution for photos published to Facebook?

Hi,
I noticed when I published photos to Facebook, it uploads the photos as high resolution 2048 pixel wide photos (when you download from Facebook). Is there anyway to reduce the resolution other than exporting a lower resolution version of the image to my hard drive then uploading to Facebook?
Thanks
Jason

I believe Aperture is automatically resizing the uploads for Facebook to stay within specs, going through an optimization procedure. That procedure may be more focused on file size via the compression setting, so the number of pixels may not be as altered as you may expect or desire. I don't know any control that you can exercise via the Share command.
Ernie

2 questions, Aperture Exporting + buy Aperture

Hello
Is there a way to export from aperture with a file size limit instead off resolution limit?
And what is the differens between Aperture Trial and the on you get I the box?
Is the on in the box "faster" and without limits?
And when i buy it can I just insert the new cd key and then it's the full version?
hope you can give me answers

Mulle wrote:
Is there a way to export from aperture with a file size limit instead off resolution limit?
No. In Aperture, go to Aperture>Provide Aperture Feedback to request it.
And what is the differens between Aperture Trial and the on you get I the box?
A printed shortcuts guide, and a small 'getting started' booklet. Both are available as PDFs to download. Also a set of sample Projects and images to try out.
Is the on in the box "faster" and without limits?
No.
And when i buy it can I just insert the new cd key and then it's the full version?
Yes.
Ian

Aperture export super slow compared to same export in iPhoto

Hello,
My question is why does it take several times longer to export (from versions to 50% jpegs as well as other down-sizing options) in Aperture compared to the same set of images in iPhoto? And for the test I actually imported the masters into iPhoto, not just previews. 180 images exported in Aperture = 30 minutes of 150% CPU and 180˚ temps, same set in iPhoto exported to same resolution = 10 mins.
I'm using Aperture 2.1.3 and everything runs really slow. MBP C2D 2.4GHz, 4GB Ram, 256Mb GeForce 8600M GT. I realize this is not a monster Mac Pro, but not an Air either. My Aperture library is not that large, less than 15Gb because iPhoto handles the majority of our photos. Editing images has always been slow, and even cycling through Previews slows down after a few minutes and CPU is greater than 125%. Temp in the graphics card and CPU reaches 180˚. Is this normal?
I'm aware there is a major issue with the Nvidia graphics card in my 'Pro, but I have not had any symptoms...yet...knock on wood. Could Aperture's slow performance be related?
Thank you

What drive do you use for your media? How full is your drive? You should use a fast external drive, not your boot drive, for your media.
Always keep a healthy percentage of free space on any drive - and all the more so in the case of the boot drive. Keep some 20-25% or more free whenever possible.
As a drive is getting full, performance can degrade considerably. That can happen even while you think you have a lot of space, especially in the boot drive, as it is always being written to and read from by the operating system, and things such as cache files, memory images, etc can use a lot of space.

Can't find IPTC metadata after Aperture export into Lightroom

Hi all,
I'm sure you've already worked through this pain, so maybe you'll have some insight for me:
I am exporting approximately 25,000 images from Aperture 2.1.4 and importing them into Lightroom 4. I started working with my small projects of about 300 images to test. From Aperture, I exported the Master files with the Sidecar (IPTC4.XMP) files. [My masters are a mix of .jpgs and .NEF, and I read that the jpgs don't always carry the meta data through]. I successfully imported the master files into Lightroom and ran the "Read Metadata from File" command. I also exported the keywords file from Aperture and imported those into Lightroom as well.
Prior to exporting, I edited one file in Aperture by entering "test caption", "test location", "test keyword", "test copyright" etc. into several of the IPTC fields. These fields are NOT appearing in the equivalent Lightroom fields. I checked the .XMP file (using text edit) and it does contain the correct "test values". I am getting all of the EXIF metadata, but none of my custom values.
Is it as simple as not looking in the right place in Lightroom for my values?

John, and Brent -
Yes, thank you, you were both right. Here is an updated screenshot showing the image in both applications, with the metadata where I expected it. The trick, in my case, was to follow "Method 1" in the link above, to write the IPTC data into the .jpgs. I'll use the sidecar method for the .NEFs, probably. Also, expanding the fields proved that the keyword was present. I'm sure I can mess around with the Display Metadata options from Default to other things. All well; heroes to the rescue!
Regards,
Grace

Aperture Export Resolution...

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