Re: [APML] Photoshop and bit depth (was: RG200+SHQ100 Composite Posted)

[Jerry Lodriguss <jml@astropix.com>]

At 10:20 PM 11/6/2001 -0500, you wrote:
>At 10:11 PM 11/6/2001 -0500, Jerry Lodriguss wrote:
> >...Lately I've found myself being really aggravated at the things that 
> Photoshop can't do in 16 bit depth that Picture Window can do.
>
>Jerry,
>
>If you properly adjust the levels before switching to 8-bit mode, how can 
>you be sure you are really losing significant signal?


Hi Matt,

I've developed some new techniques that I want to do in 16 bits.

Any adjustments you do to an image throw data away.

It's better to do EVERYTHING in 16 bits, and then, the very last step 
before you save the image should be moving it from 16 bits to 8 bits.

Of course, these comments are only directed at the really anal-retentive 
among us. <G>

Jerry


Astrophotography, Tips and Techniques
for Digital Enhancement in Photoshop:
http://www.astropix.com

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