Preview screwed up a bunch of my pictures!!

I didn't know where to post this, so sorry... feel free to move it mods.
anyway... I was going through a bunch of fresh pictures on preview, like i always do, and I rotated my side-camera photos to be oriented correctly. Then i'd hit command-S to save. So i close preview and go to look at my pictures again, and this is what i get:
[img]http://tinyurl.com/5krc73[/img]
[img]http://tinyurl.com/6fq49e[/img]
[img]http://tinyurl.com/5t3u7x[/img]

Gone now for sure...
Now for the future:
1. Never, ever, NEVER edit the original images & save back to the original (overwriting)!
2. Create a folder for the camera originals - place all photos directly from the camera to this folder.
3. After pulling the original into whichever program you use - select "Save as..." from the menu & save it to a different location. Preferably in a non lossy format (not .jpg).
4. Never, ever, NEVER edit the original images & save back to the original (overwriting)!
Steve

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I have screwed up a bunch of settings etc. on macbook pro running preinstalled lion. I think I should is to wipe the computer and reinstall to start over again. I will loose nothing of importance except a few passwords. Is this wise? How do I do it?

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Yes, that sounds reasonable.
Install or Reinstall Lion/Mountain Lion from Scratch
Be sure you backup your files to an external drive or second internal drive because the following procedure will remove everything from the hard drive.
Boot to the Recovery HD:
Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Erase the hard drive:
1. Select Disk Utility from the main menu and click on the Continue button.
2. After DU loads select your startup volume (usually Macintosh HD) from the left side list.
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3. Set the format type to Mac OS Extended (Journaled.) Optionally, click on the Security button
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Mountain Lion doesn't display Finder preview icons for .ARW files? (RAW pictures taken with SONY cameras)

This is something that I find rather ridiculous, and have a hard time believing no-one at Apple has addressed yet.
Basically the problem is that neither Mountain Lion nor Lion show Finder thumbnail preview images for pictures that are taken with SONY digital cameras.
This is something that Snow Leopard, as well as multiple earlier iterations of OS X used to do without any problem. The professional photographer community who uses SONY professional DSLR cameras is up in arms about this. And we've all been crossing our fingers that perhaps the Mac OS X 10.7.1, 10.7.2, 10.7.3, 10.7.4, or possibly the 10.8 update would fix this issue for us.
Several of us have filed bug reports over the past year or two. See this thread: https://discussions.apple.com/thread/3213982?tstart=0
This is a flaw in Apple's operating system. Especially considering that there are supposedly 200+ "new features" which were just released in Mountain Lion.
Those of us who work with SONY cameras every day would probably have paid the $19.99 upgrade price for just one "feature". And not even a new one. An old one. The ability to see our pictures in the Finder. Pretty basic stuff.
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I can see image icons for all my pre-MtLion images. These are the folder images (Icons), and all the photo images (icons) on all my hard drives. IE If I have a folder of 300 wedding pictures, they all show the picture image above the file name in the icon view. So if I want to open a picture of the "Flower Girl" I can see the image (icon) of the Flower Girl. Without the image showing all I see is the filename... Smith-212.tif. Now with Mt. Lion I CAN'T see any IMAGES (ICONS) on any of the 300 photos. Just the file names in all the different views.... Icon View, List VIew, etc. If I have a Folder with 23 more folders inside, they don't even show up either. I saw a step by step process of selecting the file and right clicking on it and opening it in Preview, then doing a copy and then pasting it on the original image in tghe get info window. WHAT A PURE PAIN TO HAVE TO DO THIS TO 170,375 IMAGES.
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BEN WELLAND...... What did you do to get this point?
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After updating to Mountain Lion 10.8.2, SONY .ARW files (and I'm assuming Pentax .PEF files too) now render proper thumbnail icons in the Finder in list view, icon view, coverflow view, and columns view.
Since this is now a recognized bug, I'm guessing that the free update to Lion (10.7.5) that Apple also just released yesterday (September 19th, 2012) will probably fix this issue too.
Hooray!
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rendered proper thumbnail icons.
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The only way I can even see the file is to open it in Photoshop, or open the folder in Bridge. Even then after I open it in PS CS6, and save it again. It still is a "Empty" file...... no render proper thumbnail.
icons
Any help will be appreciated.

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Photo Scaling for Video http://forums.adobe.com/thread/450798 may help
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Photoshop CC does not make any preview icons on Maverics while saving a picture - no matter what option i take....

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I think its a little bit different.
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A bunch of old pictured that were deleted showed up on my ipod?

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Version: iMOVIE 11, 9.0.4
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Hi all
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Thumbnail view in picture folders???

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Message was edited by: John Lippincott

Just to add a bit to what Malcolm said--many programs keep temporary files. In Preview's case you'll notice that there is a "Revert" item in the File menu, so if you make changes and then change your mind it can recover the the original. The temp files for Preview are stored in this hidden directory:
"/private/var/tmp/folders.501/TemporaryItems"
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Francine
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Preview screwed up a bunch of my pictures!!

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