-
1. Re: Understanding Camera RAW with JPEGs
Jeff Schewe Sep 23, 2011 7:54 PM (in response to Unsigned Code Labs)There a forum for Camera Raw here...
Your understand is somewhat correct...if you open a JPEG in Camera Raw and hit Done, then the adjustment settings are saved in .xmp metadata inside the JPEG and the original data is not altered. However, only Camera Raw, Bridge, Photoshop & Lightroom can "see" those changes...in oder to have the settings actually applied you must process the JPEG through Camera Raw into Photoshop or in Lightroom.
-
2. Re: Understanding Camera RAW with JPEGs
Noel Carboni Sep 23, 2011 9:44 PM (in response to Unsigned Code Labs)Me, I'd open the JPEG without using Camera Raw, convert to 16 bits/channel, do what I want in Photoshop proper, then save as .PSD. Voila, no further loss occurs after the initial decompression. Safe because nothing is being written back to the JPEG file.
-Noel
-
3. Re: Understanding Camera RAW with JPEGs
Jeff Schewe Sep 23, 2011 9:48 PM (in response to Noel Carboni)Actually Noel, processing a camera JPEG through Camera Raw has a lot of technical pluses...ACR takes the camera JPEG (regardless of color space) and does all it's processing in ProPhoto RGB Linear color space. I've found that ACR does a better job of processing camera JPEGS than doing the same work in Photoshop even in 16 bit.
-
4. Re: Understanding Camera RAW with JPEGs
Noel Carboni Sep 24, 2011 5:16 AM (in response to Jeff Schewe)I can appreciate that - my own plug-ins all do their work in linear space as well for the advantages thereof. However, it's not as if one can't get good results with the normal Photoshop tools, which for some reason seem to be out of favor... One can convert to a linear profile to work on it in Photoshop proper, for example (though one has to craft or find a linear profile to use for that, as none is provided by Adobe). I do my astroimage processing that way.
I might change my workflow to involve Camera Raw where JPEGs are concerned IF Camera Raw could be set to write its metadata back to a sidecar file or the central database instead of rewriting the JPEG file. I understand that it is not rewriting the actual image data, but I just don't want it writing back to my JPEGs at all.
-Noel


