Optics & Focus

Master depth of field and lens equivalence across camera systems.

Depth of Field Calculator

Calculate near/far focus limits and total DOF for any lens, aperture, and subject distance.

Focal Length Equivalent

Convert focal lengths across crop sensors, full frame, and medium format camera systems.

Exposure & Light

Perfect exposure every time with these precision tools.

Exposure Calculator

Equivalent exposures -- swap aperture, shutter speed, or ISO while maintaining the same EV.

Shutter Speed Calculator

Required shutter speed to freeze or blur motion based on subject speed and focal length.

Digital & Print

File sizes, print quality, and storage capacity calculations.

Print Size Calculator

Maximum print size at 150, 200, and 300 DPI. Determine if your resolution supports large prints.

File Size Calculator

RAW and JPEG file size from resolution and bit depth. Plan your memory card needs.

Megapixel Calculator

Convert between megapixels and pixel dimensions. Find resolution needed for your print size.

Photo Storage Calculator

How many photos fit on your memory card or hard drive? Calculate capacity for a shoot.

Composition & Geometry

Visual tools for perfect composition in every frame.

Aspect Ratio Calculator

Find dimensions for any aspect ratio (16:9, 4:3, 3:2, 1:1, 2.35:1) from width or height.

Golden Ratio / Rule of Thirds

Apply golden ratio and rule of thirds to any image. Interactive overlay and crop calculator.