Export jpeg ppi

Whenever I export a RAW file to jpeg, the resulting ppi is 72 irrespective of what I set in the export dialogue. Further, the constraint to maximum size is disregarded. Exporting to psd format performs as expected. Using LR 1.1 with Vista.

A search on 72dpi might not work, try just dpi.
The dpi setting can be ignored. Only applies if you are actually printing and even then, from what I have read, dpi is calculated, the critical info being file size in pixels and desired print size. PPI would be the more correct term but that would be ignored too since resolution cannot be a factor in screen display of images, only pixel dimensions are used.
In any event it appears to me that LR (and other Adobe products) are confusing the issue by including resolution settings (dpi is definitely wrong since it is strictly a printing term) for images that are being resized for email or any other form of screen display. Only pixel dimensions count for screen display - 800x600, 1600x1200, etc. Monitors do not have variable resolution and they display images in pixel dimensions only - dpi (or ppi) settings are ignored.

Similar Messages

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

Lightroom 4.1 exported JPEG files are not recognized by Apple Preview App

I just started using Lightroom 4.1 Trial version (coming from Aperture). I exported JPEG versions of some images using an ICC profile. On my iMac running Lion 10.7.5 the pictures do not show a thumbnail, the file on the desktop just shows "JPEG". I could not open the file with the Preview App, but I am able to open it with DPP (Canon software)? Also the file shows that it has 0 x 0 dimentions when I click Get Info even though it is about 25 Megs in size?
The message I get is
"The file “Edit-739820120223Canon EOS 7D.jpg” could not be opened.
It may be damaged or use a file format that Preview doesn’t recognize."
Does anyone know why this is hapening?
Is it a know issue between Adobe and Apple?
Is there a fix for this?
Thanks for help in advance.

25MB is quite a large filesize for a JPG, and this might be either quite a lot of pixels saved at a very "high" quality (not very much compressed), or it may be an extremely large number of pixels saved with medium compression.
While the technical spec of the JPG format imposes an absolute limit on maximum width and height pixel dimensions, some software employs a lower limit above which it considers the file to be invalid. Different programs, different limits, sometimes.
I have encountered this (for example) with pano stitched images using the full resolution of a large number of component shots - where JPG output could not be made, or if made, could not even be viewed as a whole by my standard image viewer (though TIFF was still OK even at still larger sizes).
If Lightroom has been set to a large printed size AND to a high ppi resolution, it is easy to get into very high numbers and very large output files. One should IMO at least question the utility and benefit of using very high ratios of upsampling from a standard digital photo - which may happen in some cases as a result of using the same output settings regardless, when spreading the same data across both small and large scales. If the file that was imported into LR really does provide an unusually high number of pixels expressing lots of detail, then that will better deserve such a capacious output file. Otherwise, each part of the file may merely show a very highly detailed representation, of a very blurry nothing-much-in-particular.
If the JPG has exceeded the viewer's size limits, a reported width and height of 0 may represent an error message, in effect - not actual reality.
regards, RP

Quality loss exporting jpeg and PDF to jpeg

Mac OS X Version 10.6.2/2.66 GHz Quad-Core Intel Xeon/Snow Leopard
Creative Suite 3
Trying to get an understanding on why the difference in quality when creating a JPEG from InDesign using 2 different methods.
1st Method (best quality—Sharp & Crisp):
InDesign/Export JPEG
Export settings:
Quality: Maximum
Format Method: Baseline
Resolution (ppi): 300
Open in PhotoShop/ Save as JPEG
2nd Method (looks washed out):
InDesign/Export PDF [High Quality Print]
Open PDF and Save As JPEG
I used default settings except changed
Conversion:
Colorspace: RGB
Resolution: 300 pixels
Thank You to all responding!

Just thought i might add that i have encountered this same problem and that if i want a high quality jpeg i save as pdf then, open and re-save as jpeg in photoshop.
I never knew my jpeg's weren't top quality until a customer informed that my jpegs were not of as good quality as jpeg's received off other designers they use.
Unfortunately i have no fix for you, but thought it may be of interest to know its not just you!
Andy Barrington

Exporting Jpegs from Lightroom - DPI question

When I export Jpegs from Lightroom, I set the dpi to 300 pixels per inch. I do not specify a max width or height. When I view these files in Adobe Bridge (CS2 or CS3) the file info says 300dpi. However, when I open the files in Photoshop and select image size, It says 72dpi and has the document size set to very large. I realize that I can enter 300 dpi and uncheck the resample box, I am just confused as to why this is happening.
My concern is, that I upload my images directly to my lab after exporting from Lightroom. Will this cause problems?
Thanks in advance!
David

the image resolution is a combination of the two parameters you mention: size and dpi. a very large size at 72 dpi is equivalent to a small size (like 3x5) at very high dpi. for printing you want at least 240 dpi at the largest size that allows you to keep that resolution. for screen presentations or your web site you want jut 72 dpi. 72 dpi and 2x3 inches will require a very small file size.
I suggest you to export images at TIFF and not JPEG as that will allow you to preserve the image quality when doing editing in PS.
In my case I export TIFF for PS (when I need PS editing) and 72 dpi JPEG for my web site (that way if somebody downloads my image illegally thy get a poor resolution copy). But since LR works very well for me 90% of the images re just kept in raw mode and I print from LR.

The difference in sharpness and overall contrast between LR5 and LR4 low res. export JPEGs

Installed the evaluation copy of the LR yesterday and as always compared with the previous version (4.4) of the program. The first and not very pleasant difference was the sharpness of the exported JPEGs in low resolution. In full resolution exports it is not that much noticeable. As you may see on the below photo LR4 export is noticeably sharper than LR5. All the export settings were the same in both versions. I used my saved export preset for both JPEGs. The LR5 exported JPEG is slightly lighter than the one in LR4.4. Both photos look the same in develop mode screen, so the difference is in export processing.
Would be great to know hear the experience, thoughts and comments of others about it.

Rufat Abas wrote:
I also hope that it'll be fixed soon.
Yeah, all other bugs in Lr5 I've been able to find acceptable workarounds for, but I'm not sure what to do about this one for the mean time - any ideas?
If no acceptable workaround can be found, then +1 vote: 5.0.1 in a hurry.
Rob

What's the deal with large white blocks in exported jpegs

I just exported my first job I ran through Aperture. Out of 736 files, 9 were flawed. When opened, the exported jpeg had a missing section of the photo, that was all white. The white block appeared in random spots but always on the edges. The problem didn't occur the second time around with the same 9 files/ this time processed in a batch of 9.
I need to know how to export files reliably - in my workflow, I don't have time to double check file quality.
Has anyone seen this issue? I've seen it with 1.1.1 and 1.1.2.
I'm shooting with a 1ds mrkII.
MacBookPro Mac OS X (10.4.6)

i've seen this too, in other odd ways. it seems to affect the images that i've spotted (with the patch tool) and have other corrections/adjustment applied. its almost like the GPU gets too overloaded to accurately recreate all of the image mods. the image seems to be segmented into smaller rectangular sections that probably get loaded into the video card's memeory and the adjustments and corrections are applied on smaller, more managable sections. when the image is stitched back together something goes horribly wrong!
the sections tend to be mis-matched with some completely black, some that have black spots where the patch tool was applied, other sections have what looks like a white overlay that's 50% opaque. sometimes even my thumbnails come up with the same results as these malformed exports. i've been able to shake them back to normalcy by toggling one of the corrections (spot/patch, highligh/shadow, etc). after the thumbnail updates properly, the export usually works fine.
this is definitely a bug with aperture and i would report it as such. attach and send the image to the bug report if you can!
scott
ps: for what its worth, i'm usually shooting with my Nikon D200 these days.
PowerMac G5 2.5GHz Mac OS X (10.4.7) MacBook Pro 2.0GHz

RAW and Exported Jpegs in same catalog

I use lightroom to import raw files from my Nikon. Then i edit them and export the good ones to jpeg on my network share for viewing. When i import jpegs from my compact camera i import them directly to my network share. Before i always had the jpegs in to the same catalog just under the other path. But now with face recognitioning i get the face from both places with the exported ones. Is there a way to stack the jpeg with the raw file so that they only show once?

Raw and Jpeg next to each other can be treated as the same file, but only if they are in the same physical folder and have the same name.
Are your exported Jpeg files then re-imported into LR in a different folder? That's a problem for what you want to do (and in general I don't recommend reimporting duplicate images).
LR could do a great job of managing your network share using a published folder, if you included the Jpegs from your compact camera on the loca folder along with the raw images. With publish services and a published folder, LR will create (and remove) Jpeg images in a managed location you choose, and you don't need to worry about reimporting duplicates.
mh++

Artifacts on exported JPEG

One of my exported JPEGs has three or four vertical lines across it, like scratches on old movies. Has anyone else seen this? Is it worth keeping the evidence, or should I just re-export and hope the problem never recurs?

Not sure what happened to my last attempt at posting, but anyway, this already came up on the forum yesterday - the thread can be found at http://discussions.apple.com/thread.jspa?threadID=672936&tstart=75 .
Apparently it only affects Intel macs and only when 'fit to dimensions' is used, and only with images from certain cameras. Still not good, though. I'd suggest submitting feedback and sample images via the Aperture feedback page at http://www.apple.com/feedback/aperture.html .
Ian
G5 2x2GHz, tiBook 1GHz 15", MBP 2GHz 15" Mac OS X (10.4.6)

PC based client cannot see keyword tags on my exported JPEGs, PC based client cannot see keyword tags on my exported JPEGs

Hey,
Im having a very wierd problem that I can't quite get my head around and would appreciate some help!
I am delivering exported JPEGs from Aperture to a client workning in a PC environment. These photos are all Keyworded, and these keywords show up when i click the "get info" button on the exported files. Also, I was asked to double check using Adobe bridge, and low and behold, all tags are there, I can see them, and so can anyone else with a mac. (and yes I did select the embed metadata in exported files button on export!)
The problem is that when they move to the PC environment, noone can see these tags. This is a huge problem, as I am delivering around 1,000 photos to be archived in a smart database that uses the tags to sort the photos.
HELP!

The Keyword, as with Captions (Description in Photoshop) is not found in file properties, but must be seen with true photo app. OSX does provide that in a Get Info window, but that will not necessarily be true in other operating systems. Knowing the apps they have used to search for the Keyword is important.
Ernie

White stripes in exported JPEGs

Dear Friends,
I use Windows XP SP 2, Indesign CS 2 (Vers. 4.0.5).
I use the Indesign in-built jpeg export function very often because I need the output for some flash presentation (flash book).
But the output is sometimes distorted with white stripes.
I really hate this - because I can see these white stripes also when I work in Indesign with High Quality View Mode.
To eliminate them I need to scroll the distorted page out of the screen and scroll it into back again.
Then there aren't any white stripes on the screen or in the resulting jpeg-Output of this page.
But for 100 or more pages this "solution" is not practical.
There are workarounds like Apple- or Javascript Indesign-Macros for exporting all pages as PDFs and then converting them back to JPEG in Adobe Photoshop, for example. But the Indesign export-to-jpeg function is very simple, easy, straight-forward and fast. But these white stripes must go away.
Is there an update for Indesign CS 2 to eliminate this problem?
What is the reason for this really annoying problem?
I thank you very much for your help and support!
With best Regards

Well - but when the exported JPEG has to be small - then Photoshop rasters the fonts very unreadable. - Indesign is better in rastering the fonts when it is exporting the stuff directly as JPEG-Files. The font is much more readable then.
Btw.: Is there a way to setup the font-rasterizer of Adobe Photoshop to improve readability of rasterized fonts?
Thank you for your help and support!
With best regards

Exported JPEGs Distorted in Shadow Areas

I own a Nikon D7000 and I shoot 14bit RAW.
In Lightroom 3.3 the preview images were distorted, only in development mode the images were fine. I reported to Adobe on this and they seem to have fixed this issue.
In Lightroom 3.3 -- and still in 3.4 -- the exported JPEGs are distorted when the exported image is resized:
A lighter version of the same crop (for illustrative reasons):
As you can see, the gradient has serious artefacts, especially when going from green to black. It is a 90% JPEG quality exported of 1050px width. I have seen this for different image qualities (80-100%), though. This does not occur when the image is exported full size.
Can anybody confirm this?
It seems that this only happens for dark shadows.
I had a Canon G9 that I used with Lightroom and I have never seen a behaviour like this. Right now the export is useless to me.

I've had some discussions about this with Adobe folks during the LR 3 beta phase, but that is all behind a wall now. I think they did put in the dithering into Lightroom now. I still think it is your monitor profile. Also realize that the displays in laptops including the MacBook Pros are not actually full 8-bit displays and you will always see some banding in them. See for example this page: http://www.lagom.nl/lcd-test/gradient.php My guess is that that will show banding on your machine in the shadow areas. Also another issue is that you have to look at these displays at precisely the right angle because you will get raised shadows by quite a bit if you look at them just a few degrees off. One thing to do is to use a test image ( I use monitor_test_txt22.png from this page: http://www.normankoren.com/makingfineprints1A.html ). When you squint the image should be uniform. If not slant the display until it looks uniform.

Exported jpegs unable to open on some TVs: need to pen in MS Paint and then save again!!! (Noooooo!!

I export jpegs from InDesign to be displayed on flat screen TVs for a client. On some TV models they are unable to load the jpegs and the only work around is to open them in MS Paint (I am on a Mac so boo!) and save as a jpeg again.
Can someone please advise what the problem is and how I can fix this, rather than having the client use MS Paint to fix?
Many Thanks.

My best guess is that you have exported your JPEGs in CMYK colour space and your TV does not understand it. Make sure you have chosen RGB as Colour Space in Export JPEG window.
There´s some other options too that you could try to toggle (like Format Method and Simulate overprint which may cause troubles in some special target devices)

IPhoto '11: Export (JPEG) size not working

I keep all my photos taken with iPhone 4 in iPhoto '11 ver 9.42 (710.42).
It is a very excellent app to mange my photos.
Recently I need some photos from iPhoto for the use in my web project.
So I export them in JPEG, choosing "high" quality and "large" size.
Yet, some of the exported JPEG are still in the original size of 2592 x 1936.
I have tried other size options, but those (same) JPEG are always in the original size.
What happened?
I appreciate if gurus here could help me.
Thank you very much.

If the pref file was damaged your test library would have exhibited problems also. Try the following:
Using iPhoto Library Manager to Rebuild Your iPhoto Library
Download iPhoto Library Manager and launch.
Click on the Add Library button,
navigate to your Home/Pictures folder and select your iPhoto Library folder.
Now that the library is listed in the left hand pane of iPLM, click on your library and go to the Library ➙ Rebuild Library menu option
In the next window name the new library and select the location you want it to be placed.
Click on the Create button.
Note: This creates a new library based on the LIbraryData.xml file in the library and will recover Events, Albums, keywords, titles and comments. However, books, calendars, cards and slideshows will be lost.
Note: your current library will be left untouched for further attempts at a fix if so desired.
Also there's a new update for iPhoto, 9.4.3. Wouldn't hurt to update to that version.

Exported Jpegs not readable by Powerpoint via finder

When I export from Indesign CC 2014 as JPEGs the files are greyed out when importing into other applications, i.e. PowerPoint 2011.
It seems indesign isn't creating a proper Jpeg with correct meta Creator & Type data so other programs know its a .jpg.

I've tried all RGB, CMYK & Grey, no luck.
Looks like a bug. There is something wrong with exported jpegs at least on OSX. If I get the file type with AplleScript an exported jpeg returns ????, while a PS jpeg returns JPEG.
tell application "Finder"
set myFile to choose file with prompt "Select a file"
display dialog file type of myFile as string
end tell

Export jpeg ppi

Similar Messages

Maybe you are looking for