<div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><br>In 99,99999% of all cases I use 8bit (publishers anyway scale down 16bit<br>images to 8 before printing, so what should I grapple with much larger
<br>files :-) I use 16bit only, if there are difficult parts in the shadows or<br>lights, so I can get out more of it.</blockquote><div><br>I would just to give my viewpoint about shadows/highlight with 16 bits color depth.
<br><br>16 bits color depth want mean than each pixels have a bigger color resolution than 8 bits. But this is not want mean than you will enlarge the CCD dynamic range ! It still the same especially with highlight. <br><br>
Of course the 16 bits color depth is better to process color adjustments for the light properlly exposed.<br><br>The CCD are different than Human eyes and do not restitute the highlight properlly. This is why if you want to render an image in the same way than human eyes, you need to do High Range picture, using bracketing with camera. Typically like this :
<br><br>- One picture under exposed to get HighLight<br>- One picture properlly exposed to get MidLight<br>- One picture over exposed to get ShadowLight<br><br>... and afer, you merge all in the same picture, using a specific format like OpenEXR for ex.
<br><br>This is explained certainly better than mine in wikipedia :<br><br><a href="http://en.wikipedia.org/wiki/High_dynamic_range_imaging">http://en.wikipedia.org/wiki/High_dynamic_range_imaging</a><br><br>And the imagering technic is called Tone Mapping. look here :
<br><br><a href="http://en.wikipedia.org/wiki/Tone_mapping">http://en.wikipedia.org/wiki/Tone_mapping</a><br><br>Like you can see, the HDR pictures are really really nice, but of course this technic can be only used with static subjects. Generally, we using a tripod during camera shots.
<br><br>In the future, i would to have a plugin to process HDR image in digiKam using a serie of bracketed shots. It's not very complicated to do. <br><br>Note than SuperCCD from Fuji is the only solution to improve the dynamic range of digital camera :
<br><br><a href="http://en.wikipedia.org/wiki/Super_CCD">http://en.wikipedia.org/wiki/Super_CCD</a><br><br>... and you can find some explainations of Dynamic Range here :<br><br><a href="http://www.dpreview.com/learn/?/Glossary/Digital_Imaging/dynamic_range_01.htm">
http://www.dpreview.com/learn/?/Glossary/Digital_Imaging/dynamic_range_01.htm</a><br><br>.. and the relation with famous histogram...<br><br><br>Gilles<br> </div><br></div><br>