>> Thomas Blomqvist replied:
>> I have been using Gevarex in workshops only so I haven't even seen a data
>> sheet, but I have seen the densitometer readings change. And I'm talking
>> about density ranges here, not max or min densities only.
> I've been waiting for someone else to address this -- everyone
> is strangely silent, end-of-summer torpor? busy with acrylic?
> As far as we are told in the known universe (unless Agfa has a stealth
> film in Europe), contrast control in continuous tone film is achieved by
> exposure and development, as the zonies on this list should have
> declared. They are not formulated for variable contrast filters......
Without knowing the specifics of Gevarex, VC filters would allow contrast
control if the product's emulsion was similar to that of a VC printing
paper while applied to a clear (not RC or baryta) base.
Pete