| http://www.w3.org/ns/prov#value | - posed to PH) on the sensor of whatever format. so what? same thing to the aperture.0 upvotesBy IvanBerg (Jan 12, 2012)T-stops are a measure of actual light transmission, after taking account any losses in the lens. (I do not think a glass with 100.00000% light transmission would do its job of bending light to focus it.) Two f/2 lenses (e.g., with ef
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