[Digikam-users] jpeg from DSLR workflow: to 16bit or not

[Gilles Caulier]

2009/9/24 Leonardo Canducci <leonardo.canducci at gmail.com>:
> 2009/9/23 Gilles Caulier <caulier.gilles at gmail.com>:
>> This is a wrong workflow. JPEG is always 8 bits encoded...
>>
>> Use RAW format instead. encoding is > 12 bits... But you need to
>> postprocess image as your camera do...
> I know jpeg is 8bit but stretching histograms in 16bit color space
> should avoid posterization anyway. read the third tip at the end of
> this page:
> http://www.cambridgeincolour.com/tutorials/posterization.htm

This is wrong. Switching 8 to 16 do not feel missing data. Histogram
will be full of holes.

To wrap around this problem you need powerfull algorithm to recompose
histogram. There is nothing like this in opensource world.

Gilles Caulier