This is an issue that becomes particularly relevant when working with camera testers. F-stops do not account for the glass used in lenses, which blocks some light. This is where T-stops come into play,
A comprehensive, easy-to-understand guide.
www.premiumbeat.com
A comprehensive, easy-to-understand guide.
Understanding Lenses: Aperture, F-Stops & T-Stops
Lens apertures may seem confusing but with a little practice you'll be an f-stop master.
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