[Alt-photo] Re: density Pictorico film
sanking at clemson.edu
Mon Nov 4 16:56:07 UTC 2013
I believe all of the Pictorico OHPs available at this time have a transmission UV of about log 0.23 - 0.27 so there is very little difference in that respect between the regular Premium Pictorico and the kind called Ultra Premium. Both work fine for me, and are pretty much transparent in use.
I test the exposure of digital negatives directly with process, without any math for a final printing time. However, if I were doing a calculation log 0.23- 0.27 would be more than a 2/3 stop correction, al most a full stop, since log .03 is one stop.
On Nov 4, 2013, at 10:58 AM, Christina Anderson wrote:
> Sandy et al,
> This is interesting. I don't use, nor feel the need to, buy the Ultra Premium (is that the black label one?) but I do use the regular Pictorico and add 1/2 stop (by dividing the final printing time by .707). WIth your logs if I read logs correctly you are adding less than I, correct? I don't have a UV densitometer and just do it all by math and the Stouffers.
> Christina Z. Anderson
> On Nov 4, 2013, at 6:29 AM, Sandy King wrote:
>> Early versions of Pictorico, back around 2000, measured about log 0.13 - 0.17 by UV transmitted light. Current versions, including Ultra Premiums, measure about log 0.25 - 0.26 by UV light. I have measured Pictorico with both an X-Rite 361T and a Gretage D200II so I am confident the density readings are reliable.
>> On Nov 4, 2013, at 4:09 AM, Christian Nze wrote:
>>> I have some revolution transfer HD and premium and also tecco at home if
>>> you want some sample
>>> just send me your address
>>> 2013/11/4 Erich Camerling <e.camerling at tiscali.nl>
>>>> Dear Members,
>>>> With my 365 nm UV-Densitometer I measured the optical densities of :
>>>> -Colorgate Screenfilm (from 2007 !) D=0.67. I ordered a new piece
>>>> because they told me they have a new, better quality (CG Screenfilm) and I
>>>> want to measure that ( 0.13 ??)
>>>> -Permajet Digital transfer film 165 µ. D=0.39
>>>> -Agfa Copyjet D=0.28.
>>>> But I don't have Mitsubishi Pictorico OHP,premium OHP nor Pictorica OHP
>>>> Can anybody send me a small piece? (5 x 5 cm) is enough.
>>>> I will put the data on the alt-photo site.
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