Contact

Found a wrong number, want a camera added, or have an idea for a tool? Email us — we answer every message.

For fastest help, include: the camera model, lens, aperture, focus distance, and what result you expected vs what you got.

Common requests

Add my camera — include the exact model name and sensor size if you know it (we verify before adding).
Bug report — a specific calculation that disagrees with another source.
Feature idea — a tool you wish existed (exposure calculator, print resolution, bokeh simulator…).
Ad/partnership inquiries — advertising or sponsored content questions.