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DPChallenge Forums >> Tips, Tricks, and Q&A >> 'Save for Web' for archiving and prints?
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Showing posts 1 - 6 of 6, (reverse)
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 10/03/2011 12:11:39 AM · #1
I use Save for Web for images on DPC - mainly to strip the metadata, give a bit more control on file-size/quality (with the advantage of the live preview), and save the step of converting to sRGB (I usually edit in ProPhoto RBG).

My question is: Does SfW give good results for full size edits for archiving and prints? SfW historically gives more "bang for the buck" as far as file-size is concerned, but am I losing too much data for it to be worth it?

(On a similar note, I once read somewhere that 'Save As' jpg at 12 quality is lossless. Is that true? I find that hard to believe.)
 10/03/2011 12:17:45 AM · #2
No jpg is lossless. I find SFW is fine for little prints, but for anything bigger, having more information and the proper colorspace for the printer, not to mention a different sharpening process makes for better prints.
 10/03/2011 12:27:40 AM · #3
Yep, and the amount of space saved for a larger file is absolutely *tiny* compared to the file size.
10/03/2011 12:50:37 PM · #4
Originally posted by BrennanOB:
No jpg is lossless.

I've heard that the highest-quality level JPEG in PS CS 2 and later is lossless compression. For print images I will end up with several files: original, edited (PS), a TIFF of the final edit, a PS file cropped/bordered/captioned, a final print image in TIFF, and a final JPEG, the last always at the highest quality level.

Disk space is cheap compared with having to re-edit a picture, and I like to be able to go only partway back in the process if I need to redo or fix something. My philiosophy is never throw away data unless absolutely necessary.

FWIW, Photoshop (.psd) files use proprietary lossless compression, and TIFF files can be saved using LZW compression, which is also lossless (essentially the same as ZIP archives).
 10/03/2011 03:43:49 PM · #5
The new standard for "lossless" JPEG is LOCO which was chosen from a field as the new standard by the Joint Photography Experts Group and trumpeted as " new lossless/near-lossless compression standard". So it looks like a much better standard, but near-lossless is not lossless. It is like getting a cake that is almost whole, I mean there is only a very narrow wedge missing. And every save will only take a tiny bit more.
 10/03/2011 03:52:19 PM · #6
I just always use JPEG as the final step only.
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