photography Calculators
Last updated: May 2026
Depth of Field Calculator
Estimates the total depth-of-field range in millimeters from focal length, aperture, and subject distance, assuming a full-frame sensor.
Hyperfocal Distance Calculator
Finds the closest focus distance at which a lens keeps everything from half that distance to infinity acceptably sharp.
Exposure Value Calculator
Computes the Exposure Value (EV) at ISO 100 from aperture and shutter speed, giving a single number that represents the total light reaching the sensor.
Flash Guide Number Calculator
Calculates the correct aperture (or maximum distance) for a manual flash given its guide number and the flash-to-subject distance.
Field of View Calculator
Calculates the horizontal angle of view in degrees for any focal length and sensor width combination.
Print Resolution Calculator
Calculate the maximum physical print dimensions an image can produce at a chosen DPI (dots per inch) target.
Reciprocity Failure Calculator
Calculate the corrected exposure time for long film exposures where the reciprocity law breaks down and film loses sensitivity.
Magnification Ratio Calculator
Calculate the magnification ratio of a lens at a given subject distance β the ratio of subject image size on the sensor to actual subject size.
Golden Hour Calculator
Calculate the start time of golden hour β the period of warm directional sunlight just before sunset β by subtracting 60 minutes from your local sunset time.
Crop Factor Calculator
Calculate the full-frame equivalent focal length of a lens on a crop-sensor camera by multiplying the actual focal length by the sensor's crop factor.
Exposure Calculator
Find the equivalent shutter speed when you change aperture, keeping overall exposure constant.
Golden Hour Calculator
Find golden hour, blue hour, sunrise, and sunset times for any location and date by entering your coordinates and time zone.
Macro Magnification Calculator
Compute the image magnification ratio and effective coverage area for macro photography, factoring in focal length, extension tubes, subject distance, and sensor size.
Field of View Calculator
Calculate the horizontal coverage width (and height) at a given subject distance for any lens, sensor, and crop factor combination.
Timelapse Interval Calculator
Determine the ideal interval between shots, total frame count, video clip length, and storage space needed for any timelapse project.
ND Filter Exposure Calculator
Calculate the correct long-exposure shutter speed when using one or more stacked ND filters.
Exposure Equivalents Calculator
Find equivalent camera settings that produce the same exposure value when you change aperture, shutter speed, or ISO.
Print Size & Resolution Calculator
Determine the maximum print dimensions and check whether your image has enough pixels for sharp output at a target DPI.
Photography Session Pricing Calculator
Calculate a fair, profitable price for a photography session by factoring in shooting time, editing hours, expenses, and your desired profit margin.
Camera Storage & File Size Calculator
Estimate what percentage of a memory card a session will fill based on your camera's megapixels, file format, and number of photos.
Golden Hour & Blue Hour Calculator
Find the exact golden hour and blue hour times for any location and date.
Lens Focal Length Comparison Calculator
Compare how two lens-and-sensor combinations deliver equivalent fields of view.
Exposure Calculator
Find the new shutter speed needed to maintain correct exposure after changing aperture.
Timelapse Calculator
Calculate the shooting interval between frames for a timelapse sequence.
Panorama Calculator
Calculate how many shots you need to cover a panorama, given your lens, sensor, and desired overlap.
Studio Lighting Calculator
Determines the fill light power needed to achieve a desired lighting ratio in a multi-light studio setup.
Golden Hour Calculator
Estimates solar noon and golden hour timing based on your latitude, longitude, day of year, and timezone.
Long Exposure Time Calculator
Calculates the correct long-exposure shutter speed when stacking ND filters, accounting for reciprocity failure.
Print Size Resolution Calculator
Calculates the uncompressed file size in megabytes required to print an image at a given size, DPI, and color depth.
Lens Focal Length Crop Factor Calculator
Converts a lens's actual focal length to its equivalent focal length on a different sensor size using the crop factor.
Studio Lighting Ratio Calculator
Determine the exact fill light power needed to achieve a target lighting ratio in studio photography.