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Welcome to the 571st issue of SnapShot!
At BetterPhoto, there's so much excitement as April swings into gear! Our next session of 4-week online photography classes is kicking off today. There's still time to sign up, so enroll now and join the fun as you take your photography to the next level. See the schedule of 4-week classes. ...
Too soon? Our next round of 8-week courses gets under way on May 9th. ... In this issue of SnapShot, we have a couple of how-to articles to share. One ("Book Excerpt: How to Photograph Water Reflections") is by Jim Miotke and myself from our just-published book, The BetterPhoto Guide to Photographing Light. The other is Lynne Eodice's enlightening article: "How to Create Dramatic Silhouette Photos". ... That's it for now. Have fun with your photography!
Where Is Jim?
Updates From BetterPhoto
Reflections offer abundant opportunities for creating fascinating and beautiful mirrored images, as well as abstract pictures. Read this article adapted from a new book by Jim Miotke and Kerry Drager.
http://insights.betterphoto.com/2012/04/how-to-create-dramatic-silhouette-photos.html Check out Lynne Eodice's expert tips on shooting visually dynamic silhouette pictures.
Don't miss Denise Miotke's awesome "Travel and Landscape Photography" online course. You'll learn techniques for developing an artistic eye and for finding awesome images - whether you are on a trip or shooting in your own backyard.
1: Backing Up JPEGs
If I transfer (save), for example, 500 JPEG images from my PC to an external hard drive, I assume that I will have a slight loss of quality. If I then shoot another 50 images, download them to my PC and then transfer (save) all 550 images onto the same hard drive (because I don't remember which ones are new), do I then lose quality on all 550 or only the new 50? In other words, does the hard drive skip over what is already saved on it and only add the new 50 images? Thanks for any help.
- Hans Abplanalp
You only experience JPEG degradation when you open the file in an editor and save it again. So if you have all your finalized JPEG's sitting on your C: drive, and you merely drag-and-drop a copy of those files onto your external drive (doing a File-Copy, for instance in Windows Explorer), you're not opening/resaving each one, and not introducing "new file compression" that a File...Save As... JPG does each time you save.
- Christopher J. Budny
So If you file-copy (not Save As) 500 files to external, and then later file-copy those same 500 plus another 50 new, as long as you're doing a file copy, and not a Save As, you should see no newly-introduced image degradation. You should also get a prompt asking if you want to write over the 500 existing images or not.
You can confirm all this easily in a test: Take a finalized JPEG you already have on C:, and file-copy it into say, 5 other folders... then go look at the properties of each file (such as using Windows Explorer to see the properties.)
Then, take a different JPG, open it in your editor, save as JPEG to a different folder. Close it. Go open that newest JPEG (not the original) in editor, save as to yet another different folder, close it; do that 5 times, and compare the File Properties of the original to the File Properties of the 5th Save As version. When I do that test, the Save As (i.e., opening, saving, closing each "next generation file" repeatedly), I see slightly-decreasing file sizes for each file, ranging from 387,401 bytes (original) to 386,096 bytes (last Save As file) indicating each successive Save As is doing more compressing each time.
Read this Q&A at BetterPhoto.com
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