Free browser-based utilities
Plan focus, framing, format equivalence and time lapse sequences with fast calculators built around transparent photographic assumptions.
Focus planning
Calculate near and far focus limits, total depth of field and hyperfocal distance from sensor format, focal length, aperture and focus distance.
Framing and lens choice
Find angle of view and physical frame coverage, or solve backward for the focal length or camera distance required by the composition.
Motion planning
Plan from a known capture interval or a target finished clip. Calculate frame count, playback duration, speed-up, storage and exposure buffer.
Format comparison
Compare two sensor formats at the same scale, including physical area, crop factor, matched focal length, aperture equivalence and optional pixel pitch.
Choose by task
Use the depth of field tool when aperture, focus distance and the chosen circle of confusion determine whether the subject and background remain within tolerance.
Use field of view when composition is constrained by subject dimensions, working distance, sensor format or available focal lengths.
Use sensor comparison for physical area, crop factor, framing equivalence and approximate depth-of-field matching across formats.
Use time lapse planning before the sequence to reconcile capture duration, interval, delivery frame rate and final clip length.
Calculation standards
The calculators run locally in the browser and do not require image uploads or account data. Shared setups place state after the URL fragment, so changing a selector does not generate indexable parameter pages.
Results use established photographic geometry and state the important assumptions beside the output. Real lenses and cameras can still differ because of rounded specifications, focus breathing, distortion correction, active sensor crops and manufacturer-specific behavior. Verify critical work with the actual equipment.