Got one but do not see the transmission film. The reflection one is also very old.
Should I get the 21/31 steps of stouffer reflection/transmission film, go to a local lab to check its V, R, G and B value and do the calculation. (Mine got figure from Stuoffer, can I use those figure ... I guess only for Visual).
If so, I note that the light is quite large compared with even the 21 step. Is that ok?
Most of the poster on this topic is 2005. I hope you can help?
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