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"I have never in my life made music for money or fame. God walks out of the room when you are thinking about money." -- Quincy Jones
Post for all for all us please
Recip will depend on light source as some have posted
Strobes vary, flashbulbs vary
Time of day daylight is A variable
LED color temp varies
Every variable varies
Testing methods vary
Some just lie. A photographer technique down the ages to protect their advantage
Misdirection is common
ymmv
😎
Tin Can
http://www.bwvision.com/complete-gui...-2016-edition/
I have found the timings in here pretty spot-on, as long as you are using nd filters of course.
That article assumes a full digital work flow and hence doesn't give useful insights into reciprocity issues as present in ilm capture.
FWIW, with Ektascan BR/A I don't notice any reciprocity issues at least up to 15-30 second exposures.
This is the reciprocity data I use for x-ray film (e.i. 50)
(Everything in seconds)
1 = 1.3
2 = 2.8
4 = 6
6 = 9
8 = 13
11 = 19
16 = 29
23 = 44
32 = 67
45 = 98
64 = 176
91 = 285
128 = 514
181 = 1224
256 = 2228
362 = 5940
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