Are focal lengths listed on lenses always for full frame?

Question

Lenses

An internet search turned up a soapy picture. There is a Canon 18-55 EF-S kit lens. I want to understand whether it is truly like this on my crop, or I still need to multiply by 1.6.

Answer 1

The focal length is the physical size of the lens, it exists separately from matrices and films.
And in order for you to add up the idea of ​​\u200b\u200bthe visible field through this lens on your matrix - multiply by the crop factor of your matrix.

Answer 2

in general, there is a legend that everything is in Google;)
https://www.exler.ru/likbez/14-08-2014.htm
radojuva.com/2012/10/lens-mm