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 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.