Exposure triangle, shutter speed, flash guide number, and ND filter calculators.
Calculate equivalent exposure settings when you change one parameter. Adjusts aperture, shutter speed, or ISO to maintain the same exposure value.
Find the minimum shutter speed for sharp handheld photos using the reciprocal rule, adjusted for crop factor and image stabilization.
Determine correct exposure settings using the Sunny 16 rule for any lighting condition without a light meter.
Calculate flash power, working distance, or required aperture using the guide number formula: GN = distance x f-stop.
Calculate the new shutter speed when using an ND (neutral density) filter. Enter your base exposure and filter strength.
Calculate the final exposure after applying EV compensation. See how +/- stops change your shutter speed, aperture, or ISO.
Calculate adjusted exposure times for film reciprocity failure at long exposures. Essential for night photography on film.