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Old 09-25-2002, 04:09 AM   16 bit per channel question Post #1
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Default 16 bit per channel question

Well, I'm back to the "box" now after a long summer outdoors. Anyway, my scanner gives me a 16 bit option. My question is, if I scan into PS at 16 bits per channel and then change the image mode to 8 bits so I can have more editing options am I defeating myself? I mean, is the 16 bit depth from the scan preserved? Can I switch back to it after editing or is that necessary? I'm laboring under the impression that I may get a better print at 16 bits. [confused]
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Old 09-25-2002, 03:22 PM   16 bit per channel question Post #2
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Default 16 bit per channel question

Hey glad to have you back Rich...

I'm not the expert to ask about this really... but my guess is that you're gonna lose that 16bit info when you downgrade to 8bit. You have to really... otherwise, you'd still be in 16bit mode... right? hehee

You can switch back to 16bit afterward, but i don't think it'll be the same 16bit image it was when it was first scanned.

And as for getting better prints from 16bit... mmm... i think i'll leave that one for someone better skilled in the print department than i. [honesty]
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Old 09-25-2002, 03:28 PM   16 bit per channel question Post #3
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Yes, I think it's quite normal that you lose information when you go from 16 to 8 bit. There's not much that you can do about that Richard.
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Old 09-26-2002, 09:42 AM   16 bit per channel question Post #4
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Default 16 bit per channel question

hello!
There is a lot of info about 16 bit from Bruce Fraser at Creative Pro:

why
and how

Also, look at Ian Lyons take on 16 bits.

Can't wait to see your (corrected in 16 bits) photos!
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Old 09-26-2002, 04:37 PM   16 bit per channel question Post #5
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Thanks for the links Pierre. Especially that first one is quite interesting.
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Old 09-26-2002, 05:28 PM   16 bit per channel question Post #6
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Default 16 bit per channel question

Thanks everyone.
Pierre......those links answered a lot of questions. Thanks again! [excited] .....RC
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Old 09-30-2002, 05:23 PM   16 bit per channel question Post #7
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You're welcome, now, I can't wait to see the result!
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Old 10-08-2002, 07:44 PM   16 bit per channel question Post #8
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Default 16 bit per channel question

thats a good question...kinda similar...i take my digi pics and edit in bibble with 16bit but going to ps7 it requires 8bit...very little option in ps7 if you use 16bit....what is the advantages/disadvantages for 8bit or 16bit?...can you really notice the difference in the prints?....i'm using epson 1280

thanks
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Old 10-09-2002, 12:09 AM   16 bit per channel question Post #9
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Quote:
Originally posted by mrdinh
what is the advantages/disadvantages for 8bit or 16bit?
That question is well answered in the link that Spectre posted earlier in this thread: http://www.creativepro.com/story/feature/7627.html
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Old 10-09-2002, 09:57 AM   16 bit per channel question Post #10
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Default 16 bit per channel question

Mrdinh first, hi!

The main idea of 16 bit work is trying to loose the least data as possible when you color correct the picture. Adobe gave us only the retouching tools needed for that.

Indeed, the printer is 8 bit output. so working is 16 bit seems strange, and the difference might be very subtle, it is up to you...
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