I have seen the benefits of converting to 16 bit for manipulation.
When working on a grayscale image where I had burned in the sky and corners ( only a little) , I was getting severe posterisation. Converting the 8 bit file to 16, burning the sky and corners, then converting back to 8 bit produced a far superior gradation.
This was clearly visible in prints, not just a theoretical benefit.
David Purdie
to see a portfolio go to - http://www.davidpurdie.com
On 19 May 2004, at 17:11, Keith Cooper wrote:
... If I scan at 8 bits, the file is half the size of a file scanned at 16 bits. The information is just not there to convert into 16 bit. Perhaps there is something I don't know about here?Hi
Converting an 8 bit file to 16 bit produces a bigger file with the same information in it. There is no difference.
The benefits -may- come when you start manipulating the file. I've not tried
it, but it might reduce posterisation or some other artefacts that can
appear for example if you push curves too far. Has anyone quantified the
differences?
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