Randy Johnson
October 18th, 2013, 07:43 AM
As anyone ever done a comparrison between gain and iris? Meaning ex" 1 stop=6 db of gain or something like that.
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View Full Version : Gain to f-stop comparrison Randy Johnson October 18th, 2013, 07:43 AM As anyone ever done a comparrison between gain and iris? Meaning ex" 1 stop=6 db of gain or something like that. Alister Chapman October 18th, 2013, 07:56 AM No need to do a comparison. +6db = +1 fstop = 2x ISO. Randy Johnson October 18th, 2013, 12:24 PM Cool so if I get a straight 2.8 lens I will get to drop my gain by at least 6 db maybe 9 from 21 to 12 good . thanks |