DOF Simulator
Verified working Aug 19, 2026
A visual depth-of-field planner for camera, lens, and distance choices.
DOF Simulator is a browser-based calculator for previewing depth of field, background blur, bokeh, and diffraction under different camera setups. Users can change sensor size, camera model, lens focal length, aperture, converter, subject distance, background distance, framing, and units, then see both numeric results and a simulated image preview.
Why it stands out
- Combines numeric DOF calculations with a visual photo-style blur preview.
- Includes background distance and scaling controls, not just subject distance and aperture.
- Accounts for diffraction and reports blur in multiple practical measures, including lines and megapixels.
- Supports camera-model-based sensor selection as well as manual sensor settings.
- Saved settings make it easier to compare multiple gear or exposure combinations in one session.
Good to know
- Requires JavaScript; the application will not run in a browser with scripting disabled.
- Some capabilities are only available after switching from the basic to the advanced interface.
- Bokeh simulation can take time to process, especially with automatic generation enabled.
- The site uses cookies/local storage and mentions personalized ads and traffic analytics.
Under the radar: After selecting a slider, use the keyboard arrow keys or mouse wheel to make small parameter changes more precisely than dragging.
Photos
Photographers and videographers comparing lens/body setups can estimate blur, framing, and focus range before a shoot. Test how aperture, focal length, and subject distance affect portrait background separation. Compare saved camera/lens settings side by side when deciding between gear options. Estimate hyperfocal distance, near/far focus limits, and diffraction tradeoffs. Switch between metric and imperial units for planning shots in the field.
Interactive depth-of-field and blur calculator; camera sensor and model selection; focal length, aperture, converter, and distance controls; basic and advanced interfaces; portrait/landscape preview modes; bokeh generation with manual or automatic processing; diffraction and hyperfocal distance readouts; saved settings for comparisons.
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