Note that the focal lengths - lens angle matchings here are based on the 35mm format, i.e. a full-frame camera sensor, and if the same focal lengths are applied to smaller sensor formats, the angle of view will be smaller, which is why major camera providers would also offer even smaller focal-lengths lens just for the APS-C format camera sensors, i.e. a half-frame camera.
GitMerlin
If you are confused by 35mm-format and 135 format like I did, check this out, https://thedarkroom.com/film-formats/35mm-film-format-135-film/. They are actually the same thing. Just named differently.
Note that the focal lengths - lens angle matchings here are based on the 35mm format, i.e. a full-frame camera sensor, and if the same focal lengths are applied to smaller sensor formats, the angle of view will be smaller, which is why major camera providers would also offer even smaller focal-lengths lens just for the APS-C format camera sensors, i.e. a half-frame camera.
If you are confused by 35mm-format and 135 format like I did, check this out, https://thedarkroom.com/film-formats/35mm-film-format-135-film/. They are actually the same thing. Just named differently.
Is the 35mm-format film referring to the sensor?