HELP! iPhoto 08 Quality loss after edits

HELP! iPhoto 08 Quality loss after edit!
Any edited version, no matter how minor, causes the file size to be cut in half!
Original 3872 x 2592 is 3.1mb at 300dpi .
Edit version 3870x2590 becomes 1.5Mb at 72dpi.
B&W conversion 3872x2592 becomes 1.6mb at 72dpi.
Seems like a major degradation! iPhoto 6 wasn't this bad.
DPI change is not a problem but the file size change sure is!
PLEASE! any ideas before I upgrade all my files to 08. Please - don't say Aperture, it's still too slow and cumbersome. Trying to avoid Lightroom and stay within Apple sphere.

It really isn't a big degradation. There is a jpg compression when you make any edit but you might be hard pressed to see the reduction unless you're enlarging/printing the file to very large sizes. The most critical part of an image file is the number of pixels in it.
The reduction in size depends on the image content of the photos. If there's a lot of the same color, i.e. like lots of blue sky or a same color wall, that type of image will see much more compression than a very intricate photo. Also when removing the color information for a B/W conversion reduces the file size considerably. Do a Google search for jpeg compression and you'll find some very informative descriptions on how the compression is performed and what part image detail plays in the resulting file size.
You would have to compress the file a number of additional times time before you'd see the change. And with iPhoto's Revert to Original capability, you can start a new edit fresh with the untouched digital negative.
Do you Twango?
TIP: For insurance against the iPhoto database corruption that many users have experienced I recommend making a backup copy of the Library6.iPhoto database file and keep it current. If problems crop up where iPhoto suddenly can't see any photos or thinks there are no photos in the library, replacing the working Library6.iPhoto file with the backup will often get the library back. By keeping it current I mean backup after each import and/or any serious editing or work on books, slideshows, calendars, cards, etc. That insures that if a problem pops up and you do need to replace the database file, you'll retain all those efforts. It doesn't take long to make the backup and it's good insurance.
I've written an Automator workflow application (requires Tiger), iPhoto dB File Backup, that will copy the selected Library6.iPhoto file from your iPhoto Library folder to the Pictures folder, replacing any previous version of it. It's compatible with iPhoto 08 libraries. You can download it at Toad's Cellar. Be sure to read the Read Me pdf file.

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Welcome to the Apple Discussions.
the only difference is that Iphoto took my quality !!
Are you basing the "quality" loss on visual appearance of the photo or on the resulting size of the jpeg file? If it's the latter that is really not an accurate method. True, some information is lost with a jpeg edit and save (only the first edit in iPhoto results in additional jpeg compression) but, in my experience, you would have to print a VERY large print before seeing any noticeable image degradation. I've compressed jpegs as high as 60%, i.e. a quality setting of 40, and for most all uses up to 5x7 prints haven't seen noticeable image degradation. However, I realize image quality is subjective and open to individual interpretation.
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Subject: [4] How well does JPEG compress images?
Very well indeed, when working with its intended type of image (photographs and suchlike). For full-color images, the uncompressed data is normally 24 bits/pixel. The best known lossless compression methods can compress such data about 2:1 on average. JPEG can typically achieve 10:1 to 20:1 compression without visible loss, bringing the effective storage requirement down to 1 to 2 bits/pixel. 30:1 to 50:1 compression is possible with small to moderate defects, while for very-low-quality purposes such as previews or archive indexes, 100:1 compression is quite feasible. An image compressed 100:1 with JPEG takes up the same space as a full-color one-tenth-scale thumbnail image, yet it retains much more detail than such a thumbnail.
Read more: http://www.faqs.org/faqs/jpeg-faq/part1/#ixzz0UKB59gND
Message was edited by: Old Toad

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Message was edited by: Richard Hagan

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http://www.flickr.com/photos/9937906@N06/4306597667/
http://www.flickr.com/photos/9937906@N06/4307339742/

Well for a start, there is no copy and paste between iphoto and any other application. I have no idea what you're pulling out of iPhoto on a copy and paste.
For working with an external editor - Photoshop or Graphic Converter:
You can set Photoshop (or any image editor) as an external editor in iPhoto. (Preferences -> General -> Edit Photo: Choose from the Drop Down Menu.) This way, when you double click a pic to edit in iPhoto it will open automatically in Photoshop or your Image Editor, and when you save it it's sent back to iPhoto automatically. This is the only way that edits made in another application will be displayed in iPhoto.
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You can use any Open / Attach / Browse dialogue. On the left there's a Media heading, your pics can be accessed there. Command-Click for selecting multiple pics.
Uploaded with plasq's Skitch!
(Note the above illustration is not a Finder Window. It's the dialogue you get when you go File -> Open)
You can access the Library from the New Message Window in Mail:
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Regards
TD

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Nope, that doesn't work either. But thank you!
Keep up to date with MQ with my blog, www.mqphotography.net/blog
Melissa Quijano
MQ Photography
Email: [email protected]
Website: www.mqphotography.net
985-807-8127

HELP! iPhoto 08 Quality loss after edits

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