> Hi everybody! I am new to the world of photography, and, i know, my
Strictly speaking, the focal length (the length from the sensor/film to
the focal point) doesn't change at all - it's still 75 to 300 millimeters.
However, due to the smaller sensor, the *field of view* that you will get
from a 300mm lens will be equivalent to what you'd get from a 480mm lens on
a full-frame sensor (or film). (the "crop factor", or whatever you want to
call it, is 1.6 for your camera.)