Heinz, how many bits doesn\'t matter anyway - we\'re not talking color accuracy but max and min luminosity values. Larger number of bits only means greater accuracy and finer separation - it won\'t affect dynamic range.
The slide was correctly exposed for the sky, underexposed for the shadow regions. The scene was simply outside the dynamic range of the slide. My first example shows that it would not have helped to expose it for some average or I would have blown the sky. I really don\'t see how anything could have been done about it. A scanner with a stronger light could have perhaps penetrated the dark regions of the slide better and pulled the shadows, but that would have killed the highlights. Possibly multiple scans at different light levels and then a HDR combination. I did try that in the example above and it didn\'t work - although that could be because the V700 has a too weak light to begin with.
For me with my gear it comes down to this:
Highlights important-> digital with large headroom in the highlights (i.e 5DII) or negative film
Shadows important->digital with large headroom in the shadows (i.e M9)
Limited dynamic range->slide film
So if I\'m likely to work with scenes with high dynamic range I should avoid using slide film (or at least Velvia 50).
Jun 16, 2011 at 06:53 AM
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