Calculator cluster
Optics & depth of field
DoF, hyperfocal distance, circle of confusion, macro DoF and diffraction limits.
Optics & depth of field
Circle of Confusion Calculator
Get a working CoC from sensor width and height using the 1/1500, Zeiss 1/1730 or 1/1000 diagonal conventions for DoF and hyperfocal math.
Optics & depth of field
Depth of Field Calculator
Work out hyperfocal, near and far sharp limits from focal length, f-number, focus distance and circle of confusion. Metres native; toggle feet on location.
Optics & depth of field
Diffraction Limit Calculator
Compare the Airy disk at your f-number and wavelength to CoC and pixel pitch to see when stopping down is CoC-limited or pixel-limited.
Optics & depth of field
Hyperfocal Distance Calculator
Find the hyperfocal distance from focal length, aperture and circle of confusion so everything from about half that mark to infinity is acceptably sharp.
Optics & depth of field
Macro Depth of Field Calculator
Estimate total geometric DoF at close-up magnifications from f-number, magnification, CoC and pupil factor. Use it to decide whether to stack.
Other clusters
- Exposure & lightEV, ND filters, exposure shift, flash guide numbers and the Sunny 16 rule.
- Sensor & focal lengthCrop factor, equivalent aperture, angle of view, field of view and print size from megapixels.
- Astrophotography500 rule, NPF, lunar eclipse and Milky Way starting exposures, and star-trail stacking time.
- Timelapse & videoTimelapse intervals, file size, shutter angle, slow motion and drone mapping overlap.
- Studio, storage & utilitiesCard capacity, handheld shutter speed, inverse-square falloff, aspect crops and pinhole diameter.