JPEG export version size?

When working with images shot as jpeg why are the exported jpeg version sizes different than the original image sizes? I've put my image export preset at the highest image quality(12). So shouldn't that mean that the exported version of an unchanged (no adjustments made) image should be exactly the same size as the camera originally captured it? If someone can explain to me how version sizing works I'd greatly appreciate it.
Mac Pro 2 Duo Core Intel Xeon Mac OS X (10.4.8)
Intel P4 3.0ghz Windows XP

Jpeg uses a compress method that depending on the quality chosen converts similar adjacent colors to one. These groups of colors are compressed in squares, and can be easily seen when the quality of the jpeg is very low.
Every time you open and save a jpeg file in Photoshop or other editing software the compression algorithm will compress it a little bit more at the same quality settings, so even at the highest you'll be loosing some information on the image.
When for example you open a jpeg file and edit it to get more detail in shadows the new saved file could be bigger in size than the previous one at the same quality settings because the algorithm find fewer similar color groups.

Similar Messages

When exporting versions (from DNG-to JPEG org size) they get very smal?

when exporting versions in aperture (from DNG-to JPEG org size) they get very smal? Why cant they stay the same size and kvalety as the DNG?

How are you exporting? If you are dragging the image out of Aperture you get the preview, you are not exporting the version.
If you are exporting then the most likely reason for what you see is the setting on the Quality slider. Remember JPG images are compressed and you will always see a difference between the original and the exported JPG.
regards

Aperture won't export full-size jpegs

I'm trying to export full-size jpegs, but Aperture is sending out 24 KB images. I'm selecting the edited versions I want, then going File>Export>Version. I have the dialog set to JPEG - Original Size. Still, what comes out is a thumbnail.
Aperture 3.4.5
OSX 10.8.5
MacBook Pro
2.4 GHz Intel Core 2 Duo
4 GB Memory

Check, if your export preset "JPEG - Original size" is still set correctly.
In the "Export" panel set the "Export Preset" pop-up to "Edit".
In the "Edit" panel make sure, that "Size to" is set to "Original Size", and the quality to a high value, at least 10.

Exporting smaller size JPEGs

In managing a library of thousands of scans of LP record covers I typically save one very large .psd file. I save a 2nd cropped reduced .jpg for use in FileMaker and iTunes and possible web use.
Now with Aperture I don't need to save an additional copy of the smaller file. But a resaved JPEG from GraphicConverter at 300x300 is approx. 45k. The same cropped version exported from Aperture is about 245k. I'm wondering if this is because GConverter allows me to save without a resource fork. Or is it all because of the quality of the preview chosen in Preferences?
Does exporting for email reduce a file size more than a version export?

The curious thing is that when I try to export full size jpegs through the email function,
Do you mean exporting through the e-mail the EXACT SAME photos that you were discussing above?
Have you done any cropping of the photos? What is the size, in pixels, of one of these photos according to Lightroom? What is the size, in pixels, of the corresponding exported photo, according to your operating system?
Can you show us screen captures of the export dialog box?
At this time, I am not going to deal with the print at A4 size being pixelated, as printing introduces a lot of other places where something can go wrong. To see if the problem is in the export, I want to know if you look at the exported photo outside of Lightroom, does it appear pixelated or not?

Problem exporting versions in original size

hi!
with Aperture 3 when exporting versions in original size, I obtain 400xYYY pixels (images constrained to 400x400) showing impossibility to respect the original size.
attempting to solve the problem I have exported selecting limited wider sizes (like <4000x4000) to allow the program to keep the higher resolution. It doesn't work because then all images are forced to be exported in 4000x4000.
anybody has the solution?
thank you. david

Welcome to the forum.
Go to Aperture>Presets>Image Export, select the export preset you are using and make sure that it's on 'original size' and not on 'fit within'.
Ian

JPEG exports - "optimize to file size"

just saw this tucked away in somebody's lengthy post, but i think it merits its own thread.
it would be very useful, and isnt very difficult, to implement a jpeg export option for auto-setting the quality slider based on "desired file size".
for instance, my web products need jpegs w/ a max of 800k. in PS, i have to dork around w/ the preview sliders to get this. in LR, there isnt a way. preferred for both would be UI for inputting the desired size and let the cpu do its job.
this would rock.
thanks
matt

Yes. Generally speaking, would be nice to know the exported file size in terms of MB / KB, in addition to pixel dimensions which are already there.
Gilles.

Have been trying to export versions to a friend in the UK as JPEG. He receives them as bmp and no Metadata. Tried all the JPEG settings in Image Export with no success.

Have been trying to export "versions to a friend in the UK as JPEG. He reseives them as bmp with no Metedata. Have tried all the JPEG settings in Image export with no success.
Nelson

Ernie-
Thanks for responding...but still have a oroblem. Here's what I'm doing:
In Aperture I choose a "version" that has been Adjusted (croped, etc.).
- Go to "File"...'Export"..."Version"
- In next window for "Export preset" I choose "JPEG-Fit within 1024x1024"
- Click on "Export version"
The exported version then showes up in "Finder" under "Pictures"
- Next I open "Mail" (version 5.2)
- Adderss email to friends in England.
- Click on attachment (paper clip)
- Choose my "version" from "pictures"
- Back in Mail, click on "Format"..."Make Plain Text"
- Send
My friends receive it as "bmp", not JPEG, with no Metadata.
If I do the same procedure but under "File" choose "Export Master", they receive it as JPEG and also the Metadata.....BUT, of course, no Adjustments, such as croping, that were made to the "Version".
What am I doing wrong? Is there any way to save the "Version" as a "Master" and then send it as a "Master"?
Thanks,
Nelson

Aperture is exporting large file size e.g. original image is 18.2MB and the exported version (TFF 16 Bit) is 47.9MB, any ideas please

Aperture is exporting large file size e.g. original image is 18.2MB and the exported version (TFF 16 Bit) is 47.9MB, any ideas please

Raws, even if not compressed, Sould be smaller than a 24-bit Tiff, since they have only one bitplane. My T3i shoots 14 bit 18MP raws and has a raw file size of 24.5 MB*. An uncompressed Tiff should have a size of 18 MP x 3 bytes per pixel or 54 MB.
*There must be some lossless compression going on since 18 MP times 1.75 bytes per pixel is 31.5MB for uncompressed raw.

Exporting full size Jpegs from DNG converted files

Hi there
I imported some RAW files into Lightroom 4, which I then copied/converted to DNG, then edited them. I now want to export them as full size, high-quality jpegs but I only seem to be able to export them at a maximum of about 800kb, which is far lower than full-size. Is this to do with first the conversion to DNG from RAW on the import? Am I best copying them from raw and not converting them to DNG at all? Next question is, will I have to import the original RAWs again and re-edit them to be able to export as full-size high quality jpegs or is there some way to not have to do them again? Many thanks, Sophie

The curious thing is that when I try to export full size jpegs through the email function,
Do you mean exporting through the e-mail the EXACT SAME photos that you were discussing above?
Have you done any cropping of the photos? What is the size, in pixels, of one of these photos according to Lightroom? What is the size, in pixels, of the corresponding exported photo, according to your operating system?
Can you show us screen captures of the export dialog box?
At this time, I am not going to deal with the print at A4 size being pixelated, as printing introduces a lot of other places where something can go wrong. To see if the problem is in the export, I want to know if you look at the exported photo outside of Lightroom, does it appear pixelated or not?

Aperture Photo JPEG Export Size

I have a question regarding the file sizes of photos exported from Aperture. When exported the photos seem to be almost double the file size of the original photo imported to aperture and the size shown in Aperture. For example, I have a photo that is 2736x3648 sized at 3.51MB in Aperture. I export with JPEG set to original size, JPEG quality is set to 12. The resulting file size exported is 7.1MB. The resolution of the exported photo is also 2736x3648 so I don't think it's a DPI issue. I've done some experimentation with the JPEG quality and the results are still strange. 10 gives me a 2.2MB file, 11 gives me a 2.6MB file and 12 as mentioned previously is 7.1MB. Seems like a huge jump so I suspect I'm missing something. The other sizes being smaller than the original also seems strange.
I've looked at the exported photos at 10,11&12 and can clearly see the detail lost. The darker parts get darker and drop the detail in the photo. I'm very reluctant to lose quality so ideally would go with 12.
I know there are a few questions like this on here already but none of them seem to have a good answer. Just wondering if anyone has figured it out?
Thanks in advance.

Terence, you've helped me on a lot of things, so I guess I am going to further ask for clarification....
I have recently been trying to use Aperture solely (and pretty much abandon iPhoto.). But, when I say export a file to jpeg (whether it is currently a RAW or JPEG file, I am concerned about my settings-- by default, the setting "export jpeg in original size" has settings as 72 dpi. I have changed that to 300dpi. Is this why I have 15-20MB files? Is this the correct setting? I don't want any printer to have a false representation of how much data is there. Nor do I want to lose any data either.
I could theoretically take any photo and probably even say 4500dpi, and the file would be exaggerated that much more. I go to print, and the print center sees there is plenty of resolution there, but in reality, there is no more data there than the extent to which the file provided. You can't create resolution that is going to improve on what your camera or the minor adjustments you do to it to improve it. I say export it at whatever maximum dpi it has or multiply that dpi by 100, and no matter what, the image is going to print the same no matter how much data (or how large the box is).
Also, if I open my library in iPhoto and tell it to export the photo at original size, the file is smaller than the file exported via Aperture (thus my concern I am providing more detail than what is really there) and providing an exagerrated resolution. Your help is greatly appreciated. I am providing a disk to someone, and this is affecting whether I give them one or two disks due to the file sizes. (And, of course, as is, the file sizes are harder to work with if you want to email. So, if they don't have an email program that auto-condenses, they may be frustrated not having smaller files if they choose to email any.)
Thanks in advance!

Error: exporting versions is done using RAW

Hi,
I'm having a strange problem which I couldn't find in the different communities.
My workflow: As usual, I'm importing my pictures in RAW and process it in Aperture (3.1.2). Now, I wanted to export the pictures in JPEG. To do so, I right-clicked on the desired project, chose "Export --> Versions", and in the export presets "JPG - Original size".
The export was working fine (the folders were created), but the pictures exported were no JPEG but RAW (file format CR2, I have a Canon 500D), and - hardly surprising - without any of my my adjustments. The result is the same whether I'm exporting individual pictures or whole projects, and even changing the presets for the export (e.g. TIFF) doesn't change anything; Aperture insists on RAW being the file format of the exported pictures.
And just to answer the most likely question: Yes, I've chosen "Export --> Versions" and not "Export --> Masters". :-)
Anyone has an idea what I've done wrong?
Kind regards
Dirk

Hi Kirby, hi Ernie,
thanks for your help... after a lot of trying, I found at least the reason for the error. :-)
The Aperture library is situated on a NAS, and the image files are stored within the library (that was the import setting as well). It seems that Aperture has got some troubles with that situation. In the browser, the badge "the referenced image master is offline" is displayed for all the images. Strange enough, because all the image masters are stored in the library (the NAS is online as well), and I can access the library.
It seems that with this status, Aperture can't export properly. After some trying found out that I found out that if duplicate the version of the image, Aperture doesn't think any more that the referenced image master is offline. When I export this version, everything is fine.
I don't really understand what's going on, but the question has shifted somehow - no export problem any more, but "How can I import images to a Aperture library situated on a NAS without creating the problem mentioned above".
Dirk
PS:
English is not my first language, so I apologize for any errors.

Problem exporting versions

Anyone know why i can't export versions from aperture 2 on a new imac? Exporting masters is no problem; and I'm trying to export the versions in the same way, ie, file/export/version/s but the little dialogue box doesn't even appear for me to choose where to export the versions to. Must be something very simple I've overlooked but grateful for any help.
Ta, lucas

Are you by any chance using export as jpeg to fit in 1024 by 1024? I was and found the same problem but found that other sizes work OK including custom ones I set up (25% of original in my case)

Does Export Version reduces image quality?

Hi,
I got smaller file size when I "export version" at "original size". My master was jpeg of 5.1MB and I exported in jpeg format, I got 3.6MB. If I "export master", I do get 5.1MB. What does Aperture do to the jpeg image that reduces the file size?
Then I played around with "image quality", which is 10 by default. If I set it to 11, I got a file of 4.1 MB, still smaller than the original 5.1MB. Set it to 12 I got a file of 10.4MB. I am kind of confused. I guess the "image quality" relates to degree of jpeg compression, and a 12 setting means that Aperture compresses the jpeg image at a lower compression ratio than my camera? Does Aperture uncompress jpeg image and re-compress it when "export version"?
The bottom line is, how do I preserve image quality after adjustments? In other words, I would like to export at the same image quality as my original photo, or as close as possible (I assume Aperture reduces jpeg image quality a bit every time I apply adjustments to the image via export). Thanks much for your time.

Wanderzhuanyou wrote:
2) When I make adjustments in Aperture I actually work on the image Aperture produces out of the master file - which should be about 73MB in my computer memory as the size of the image is 2848 x 4272 and Aperture works in 16 bit.
Internally, Core Image (which Aperture uses) actually works in 32-bit, but your basic idea is right.
3) When I export, Apertures compresses this 73MB image (assume adjustments don't make much difference to the image size) to a jpeg file.
First the image will be reduced to the bit depth of your export preset. Image adjustments will make quite a difference to the final file size because areas of high definition detail and a large tonal range will both increase the file size for a given compression setting. So any sharpening, for example, will increase the file size.
As a test, export an image with no sharpening applied, then add some edge sharpening and export it again. You should see a noticeable difference in file sizes.
Correct?
Pretty much.
Ian

Cannot Export Versions with Aperture 3.3

After upgrading to Aperture 3.3, I lost the ability to Export Versions of my files. Exporting Originals works just fine, but I need to I export jpegs for my work. What I end up getting now is a jpg with a totally black image. The metadata is intact and the size and jpeg format are correct, but the image is just black. I have already tried Repairing Permissions and Repairing the Database in Aperture with no change. I have not yet tried "Rebuild Database" but I do not think that is the problem because I am able to Export images from my Aperture Library files using iPhoto without a problem. Please help.

I am exporting with a preset that I have set up. Here are the settings:
Image Format: JPEG
Image Quality: 10
Size To: Fit Within (Pixels) Width 1024 Height 683
DPI: 132
(No Gamma Adjust)
Color Profile: Use Source Profile
(Black Pint Compensation NOT CHECKED)
(Show Watermark NOT CHECKED)
Okay, the good news is that I tried other settings and it worked. Tiff works just fine and exporting the preset jpeg setting (full size, half size) works just fine. I then deleted the export setting mentioned above and created a new one, but it does not work.
So, I am almost there. I appreciate your suggestions so far as some of them worked. Any more ideas?

JPEG Export fails in some way

Hello guys,
we have developed a JPEG Export Plugin for InDesign server that worked fine for several years now, never having any problems. Now a strange issue occur and I need some help. When exporting an preview image of one page (containing textframes with text and tables) the preview image is correct if the dpi is smaller than 72 dpi (100% in our application). But when the dpi is equal or greater than 72 the text appears correctly on the image but the tables are missing. This problem occurs on CS4 but not on CS5 server, but there is no difference between the plugin implementation (beside the changes that were obligatory for porting the plugin to CS5). Maybe this is a known issue or someone has solution for it?
Here is the difference between the exported images (smaller than 72 dpi and greater or equal 72 dpi):

I do move some photos to OnOne or PS (for editing), then back to Aperture. In Aperture I would select-all (click) the photos I wanted to send to Sam's for printing then drag the selected items (all at the same time) onto the Sam's web site for processing/priniting. Another thought - on occassion I would have to switch-out flash-cards during shooting.
Ah there you go both pieces of the puzzle solved.
You're getting the Tiff files in Aperture from the use of the external editor. In the Aperture->Preferences->Export window is the settings for what file type to use with an external editor I'm sure your setting is Tiff.
And then by dragging the file out of Aperture rather then exporting it you are getting the Tiff.
IMPORTANT Point:
By dragging the files out of Aperture you are not really exporting them you are getting the Aperture generated preview (or in the case of the Tiff files the original). The settings in the Export window have NO effect on the image when you drag it out. In all likelihood you are not getting the size and/or resolution you think you are.
You should be exporting the versions by using the Export Versions button in the Export window. Once the versions are exported to a folder on your disk you can then drag those to the print web site. This will ensure you are getting the image size and resolution you want.
regards

JPEG export version size?

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