Exposure, optics, and digital-imaging calculators for photographers
Calculate exposure value (EV) from aperture, shutter speed, and ISO.
Find near/far sharpness limits and hyperfocal distance for your shot.
Compute the focus distance that maximizes depth of field to infinity.
Convert a lens focal length to its 35mm-equivalent field of view.
Determine a sensor's crop factor relative to full-frame (43.3mm diagonal).
Calculate horizontal, vertical, and diagonal angle of view for a lens/sensor.
Estimate macro reproduction ratio from focal length and subject distance.
Compute the acceptable circle of confusion used in DOF calculations.
Calculate total megapixels from image width and height in pixels.
Find the maximum print dimensions for an image at a chosen DPI.
Estimate uncompressed image file size from resolution, bit depth, and channels.
Convert between video bitrate, duration, and resulting file size.
Estimate photo count or video recording time for a memory card.
Estimate shot count from a CIPA battery rating, scaled to any battery size.
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