Re: 16 bit versus 8bit
Re: 16 bit versus 8bit
- Subject: Re: 16 bit versus 8bit
- From: Todd Flashner <email@hidden>
- Date: Wed, 06 Feb 2002 18:17:29 -0500
>
> The other problem with 16 bit editing is that even if you work around
>
> the problem of making selections in a 16 bit file the selection is still
>
> 8 bits and a gradient in the selection (like a feather radius of 60 or
>
> 80) is still a severely "stepped" 256 level thing that can introduce
>
> problems all on its own. Here's a real improvement for Adobe to consider
>
> - how about giving us a 12 bit mask (like Live Picture had) that could
>
> really help in making seamless mask transitions in semi transparent
>
> things like wisps of hair and smoothly blend color edits into a smooth
>
> expanse of tone or gradation.
>
This seems to contradict everything else you've said. If 8 bits is
>
enough for the data, why wouldn't it be enough for the mask?
One reason would be that noise, as in film grain, which is present in the
image, and which helps prevent banding, is absent in the computer generated
gradients and blurs. One can add grain to the masks as well, but that
presents it's own visual disturbances.
Todd Flashner
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