Hello Pali,
No doubt that a drum is a way better device than a V850, the question is when this that makes a difference or not . It's easy that it makes a difference with a 35mm dense Velvia, and it's really difficult it makes a difference in a 8x10" BW with common (say) 1.8D densities. (is a Ferrari faster in a traffic jam?)
Let me ask what do you think about this test: https://petapixel.com/2017/05/01/160...s-500-scanner/
Do you think is it fair ? is this consistent with your experience ? This is not a lab test but it's consistent with what I found in practice:
... and speaking about unicorn magic power, consider that it's really difficult that an LF shot has 40Lp/mm detail in the negative (this is 80 lines in a mm !!), no unicorned drum will get more than what's in the negative, so the Ferrari is jammed in the traffic.
PD 1: I've pending showing you the ME effect in with the V850 - Velvia as you asked me time ago. Sorry, then I hadn't V850 with me for some weeks and I forgot that.
PD 2: Since last time we discussed about that I advanced a lot in 3D LUT edition, if you don't use that kind of resources I'd recommend you take a look to 3D LUT Creator, I feel this allows full color control beyond any scanner footprint.
So I admit that a drum works much better than the V with extreme densities, but I don't credit any "better color" because with 3D LUTS we can convert one thing to the other.
Let me insist in the 3D LUT, having seen your dedication to good color, and only for the case you are not using that, just take a look to the 3D L C.
Regards,
Pere
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