Question reg ACR (Stupid qtn warning)

07/01/2007 01:22:39 PM · #1

Hi,
Here I am again with another two or three stupid questions.

1. When do you use DNG and when do you use TIFF or PSD while saving from RAW?

2. I have some jpegs saved from PSDs and I am trying to get the exif info for them, but it seems PS has stripped it off the info. I dont have the originals with me at this moment..is there a way I can find out the EXIF info?

3. Is there an option to save the exif info on the PSD files itself (rather than XMP files) while saving from RAW?

Canon EF 16-35mm f/2.8L USM

07/01/2007 02:48:01 PM · #2

Bump..any help will be appeciated.

oOWonderBreadOo

Canon EOS-5D

07/01/2007 03:07:48 PM · #3

DNG is the format you save as when you want to keep the xmp within the file itself. I don't ever save as PSD or TIFF's straight from RAW but I suppose there might be reasons, I just don't know of any! :0)

chimericvisions

Canon EOS-60D

Canon EF 24-70mm f/2.8L II

07/01/2007 05:09:31 PM · #4

1. DNG is another Adobe format. "Digital Negative". There really isn't a lot of reason to use it, in general.

2. If it's not there, it's not there.

3. You don't have sidecar XMP files with PSDs, or at least you shouldn't. XMP is only used for RAW files. XMP doesn't contain EXIF, the file itself contains that - it is just the "extended metadata" for the file. (Keywords [sometimes], visual modifications, etc.)

07/01/2007 07:47:11 PM · #5

Thanks Laura, Thanks Jay...I appreciate your taking the time to answer.
DNG is the way to go I suppose.

petrakka

07/01/2007 07:53:51 PM · #6

there isn't a sidecar .xmp files if you convert your images to DNG either.
Also you can import jpg's to be a DNG file and therefore (in CS3) edit your jpg's in adobe camera raw as you would a normal raw file.
DNG's also tend to be a bit smaller than the .nef or .cr2 raw files from nikon and canon's. but they do lose a bit of quality.

there are plenty of reasons to use it, it just needs to fit your purpose.

Canon RF 24-70mm f/2.8 L IS

07/01/2007 09:44:16 PM · #7

Thanks petrakka.

I tried several options and here is what I am getting..

1. Direct save from ACR to JPEG - retains the EXIF info
2. Save to PSD/TIFF/DNG , then open in photoshop, save to JPEG - EXIF is lost.
3. Open in PS CS2 from ACR, then save it to JPEG in CS2 - EXIF is lost.

I want the final JPEGs to have the EXIF info, what do I do ?(Ofcourse saving directly from ACR is not an option as I will lose the 12 bit advantage in CS2 then).
Am I missing something here? What do you guys do and do you have the EXIF info in your final JPEG?

kirbic

Canon EOS R5

07/01/2007 09:56:34 PM · #8

Your (2) and (3) workflows should not strip EXIF. If they are, it's likely that you're using "Save for Web" which strips EXIF to save space. Use "Save As" when you want to retain EXIF.