Hello again,

Q1. A densitometer or scanner can scan to 4.0D - correct?

Q2. If a film can't be developed beyond say 2.2D then those digital values beyond 2.2D are unable to be utilised by that film - correct ?

Q3. Therefore if we were to develop film in such a way as to get say 10 zones up to the 2.2D then those 10 zones are spread over the limited digital range of Q2 - correct ?

Q4. To stretch things further, if we were to develop say 13 zones up to 2.2D by using a stand development or some such then in essence, each zone has fewer digital values available to it - correct ?

What I would like is to be able to range the digital scanning from 0 to 2.2D. So that would be say 65536 values over the 2.2D range for example.

I do also realise that Velvia is apparently able to go pretty close to 4.0D. So the scanner and film are 'aligned' in their ranges as it were in this case. Its just the B&W film process I have won't go beyond 2.2D.

Thoughts?

Cheers,
Steve