11 Services from photo-calc.x402tookit.com

Calculates print dimensions (inches and cm) from image pixel dimensions at various DPI settings, or computes required pixels/megapixels for a target print size, with viewing distance advice.

Calculates time-lapse parameters: given any two of interval, shooting time, and clip length, returns the third plus frame count and storage estimate.

Calculates the crop factor of a camera sensor and returns full-frame equivalent focal length, aperture, and ISO for a given lens, supporting named sensor types or custom dimensions.

Calculates near/far focus limits, total depth of field, and hyperfocal distance from focal length, aperture, focus distance, and sensor type.

Calculates exposure value (EV) from aperture, shutter speed, and ISO, identifies the light level it suits, and returns equivalent aperture/shutter speed pairs.

Converts between ND factor, stops, and optical density, then computes the new shutter speed when an ND filter is applied.

Calculates flash effective range for a given aperture and ISO, or the aperture needed to correctly expose a subject at a given distance, using flash guide-number mathematics.

Calculates horizontal, vertical, and diagonal angle of view for a given focal length and sensor size, plus the width and height of scene covered at a specified distance.

Given current aperture, shutter speed, and ISO plus one new setting, computes the compensating adjustments to the other two settings to maintain equivalent exposure, expressed in stops.

Returns minimum handheld shutter speed (reciprocal rule) and maximum star-trail-free exposure times (500 rule and NPF rule) for a given focal length, sensor, and optional parameters.

Returns starting aperture, shutter speed, and exposure value for a given weather condition and ISO using the Sunny-16 rule, plus equivalent exposure combinations.