Try it
MY GEAR — a single card with the focal-length scale on top and the gear list below: a Canon EOS 6D Mark II and four Canon EF lenses

See the whole rabbit hole.

Every lens you own, on one scale.And every serial number in one place.And you only pay once.

Open it, and there is a scale

Type in the cameras and lenses you own and they line up on a focal-length scale. Bars are zooms, ticks are primes. A dashed tick is one you have not bought yet.

Example Actual 35mm equiv 12 25 50 100 200
Tap 35mm equivalent and the whole scale slides sideways. The spacing does not change. Micro Four Thirds only, for now.

Three things it does

Type it in — enter a lens by name. The focal length is read from the name.

See it line up — where you overlap, and where you have a gap. The shape answers before the numbers do.

Make a card — pick the gear you want, get one image, and post it.

Try it

Everything stays on this device. No account, no sign-in — the screen you open is your scale.

There are still gaps

The catalog has holes. New models, generation suffixes, old glass — rather than fill them with the wrong value, we leave them blank.