Nail focus and exposure before the shot. Calculate depth of field and hyperfocal distance, work out crop factor and equivalent aperture, field of view, exposure value and the sunny 16 setting, and size a print from megapixels. Free, in your browser. All 22 tools below are free, run in your browser, and need no sign-up.
Calculate the depth of field for any lens from focal length, aperture, subject distance, and sensor size. See near, far, and total sharp zone.
Find the hyperfocal distance for any lens and aperture. Focus there to keep everything from half that distance to infinity acceptably sharp.
Convert a lens focal length to its full frame equivalent using your camera crop factor. Compare APS-C, Micro Four Thirds, and more.
Convert an aperture to its full frame equivalent for depth of field and light gathering across sensor sizes. Compare lenses fairly.
Calculate the angle of view of any lens from focal length and sensor size. See horizontal, vertical, and diagonal field of view in degrees.
Calculate the exposure value from aperture, shutter speed, and ISO. Convert between EV, light value, and camera settings for any scene.
Apply the Sunny 16 rule to find shutter speed and aperture for any lighting from your ISO. Meter-free daylight exposure made simple.
Calculate flash aperture, distance, or guide number for correct exposure. Solve any of the three from the other two in meters or feet.
Find the largest quality print size from your image pixels and target DPI, or the DPI you get at a chosen print size. Inches and cm.
See the largest print size your camera megapixels support at 150, 200, and 300 DPI. Turn a megapixel count into real print dimensions.
Find the longest shutter speed before stars blur using the 500 and NPF rules from focal length and sensor. Sharp astrophotography.
Plan a time lapse: find clip length, frame count, interval, or shooting time from the others. Includes storage size and card estimate.
Calculate the new shutter speed after adding a neutral density filter. Enter base shutter and ND stops to get long exposure times.
Calculate the exposure compensation in stops for macro and bellows extension from focal length and total lens extension. Fix dark macro shots.
Find the slowest handheld shutter speed that avoids blur using the reciprocal rule from focal length, sensor, and image stabilization.
Estimate RAW and uncompressed image file size from megapixels and bit depth, plus JPEG sizes and how many fit on a memory card.
Convert changes in aperture, shutter speed, or ISO into stops of light and back. Understand equivalent exposures and stop differences.
Understand ISO invariance, when to raise ISO versus brighten in post, and how ISO, noise, and dynamic range interact on modern sensors.
Learn when golden hour and blue hour happen relative to sunrise and sunset, with a planner that estimates the windows from your sun times.
Find the aperture where diffraction starts to soften your images based on sensor and pixel size. Know the sharpest f-stop to use.
Find the shutter speed to freeze or intentionally blur a moving subject from its speed, distance, and direction across the frame.
Look up the color temperature in Kelvin for common light sources and match the right white balance preset for accurate photo colors.
Yes. Every tool in this toolkit is completely free, with no sign-up and no usage limits.
Yes. They run in any modern web browser on phone, tablet or desktop, with nothing to install.
Yes. These tools run entirely in your browser, so nothing you enter is uploaded to a server.