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Photography Question 
Holly Shao
BetterPhoto Member

member since: 6/3/2005
 

32 Bits/Channel in Photoshop?


Could anyone give me some advice on setting the image mode to 32 Bits/Channel? It's under Image > Mode > 8/16/32 Bits/Channel in PS CS2. Is it necessary to do this before starting any PS work on an image? Does it help get better color distribution after some effects are applied to the image? Also, how different are these three settings - 8/16/32 Bits/Channel? I would appreciate very much your help!

Holly

11/30/2006 6:17:41 PM

 
Jagadeesh Dev
BetterPhoto Member

member since: 11/30/2005
  Holly -
There is no reason really to work in 32-bit mode, as all consumer grade printers and most pro printers only print using 8 bits (so I've read here on this sight). Also, when editing in 32-bit mode, you are limited to what adjustments and filters you can use in Photoshop. Next time you're in your raw converter, save it as a 32-bit image, then open it in PS and look under filters and adjustments, and you'll see what I mean.

12/1/2006 1:56:32 PM

 
Holly Shao
BetterPhoto Member

member since: 6/3/2005
  Thank you so much, Sipho!!!

Holly

12/1/2006 2:26:52 PM

 
doug Nelson
DougNelsonPhoto.com

member since: 6/14/2001
  If the image originated in high bit (more than 8 bits per RGB channel, over 24 altogether), you will do less damage to it when you do your tonal and color correction in Photoshop. RAW images and images scanned with high-bit settings in a scanner will give you this control. I do mostly scanning, so I scan in high-bit, do my tones and color, THEN convert in Image Mode to 8-bit. If originating and working in 8-bit meets your needs, stay with it.

12/1/2006 3:12:27 PM

 

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