panagiotis agapitou Posted October 21, 2018 Share Posted October 21, 2018 Hi I have these indormations from a Daily Continuity Report (i have not seen the actual document .. the infos were transfered to me) .. It's a 35mm FILM with zeiss super speeds mkii Set Up: 18 mm 6'-15' T1.4.8/10 LC1 ND.3HEGrad Btm 1. I guess the T infos are on a something like ''minolta scale'' ?? 2. What is the Btm ?? Thanks !! Link to comment Share on other sites More sharing options...
Mark Dunn Posted October 21, 2018 Share Posted October 21, 2018 T-stops take into account light transmission rather than just the geometrical focal ratio which is the f-stop. So to take a well-known example, a lens might be f2.2 but T2.5. I don't know what "Minolta scale" is. "BTM" I assume refers to the grad, presumably it's at the bottom of the frame as opposed to sides or top. But don't take my word for that. Link to comment Share on other sites More sharing options...
Premium Member David Mullen ASC Posted October 21, 2018 Premium Member Share Posted October 21, 2018 Yes, many digital meters give exposure info in tenths of a stop. Yes, I'd guess BTM means "bottom". Link to comment Share on other sites More sharing options...
panagiotis agapitou Posted October 21, 2018 Author Share Posted October 21, 2018 Thanks you very much !! You are right !! I looked very carefull the shot .. and the dark side of the filter is on the bortom of the frame Link to comment Share on other sites More sharing options...
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