Matt Blaze on Nostr: A quick and very pedantic note on long lens nomenclature: Lenses with a narrow field ...

A quick and very pedantic note on long lens nomenclature:

Lenses with a narrow field of view and a long focal length (> ~90mm or so on 35mm cameras) are called, appropriately enough, "long" lenses.

Many, but not all, long lenses employ an optical design where their physical length is shorter than their optical focal length. These are called "telephoto" lenses. Most, but not all, telephoto lenses are long, and most, but not all, long lenses are telephoto. But he terms aren't interchangeable.