StatGardenREF. DESK
Calculators/Everyday/Photography

Photography calculators

The maths behind exposure, depth of field, ND filters, time-lapse intervals, star trails, shutter angle and the storage a shoot will actually need.

ND filter exposureThe shutter speed a neutral density filter needs, from a filter labelled in stops, as an ND number or as an optical density.Time-lapse intervalHow long a time-lapse clip runs from the shooting interval, how many frames it takes and how much card space they need.500 rule for star photographyThe longest exposure before stars trail, from focal length and crop factor, with a stricter divisor and a declination allowance.Shutter angle to shutter speedConverts a cine shutter angle to a shutter speed at any frame rate, and finds the angle that matches a shutter speed you want.Depth of FieldNear and far sharpness limits from focal length, aperture, sensor format and subject distance.Exposure EquivalentThe matching change needed in a second setting to hold exposure equivalent after changing one.Print Resolution (DPI)Resulting DPI for a print size, or the maximum print size for a target DPI.Video File SizeVideo file size in megabytes and gigabytes from bitrate and duration.Photo Shoot StorageTotal storage needed for a shoot from photo count, photo size and video minutes.Crop Factor Equivalent Focal LengthFull-frame-equivalent focal length for a lens used on a cropped-sensor camera.

Other Everyday categories

ConversionHome & buildEverydayFoodPetsAviation3D Printing