LFingar wrote:
Welcome to the Hog!
Not to beat a dead horse, but that 1.6 crop factor does not change the focal length of a lens. It changes the field of view of the lens. On your camera the 300mm lens has the field of view of a 480mm lens on a full frame body. Sometimes, that gives an APS-C sensor an advantage over a full frame sensor.
That horse is not just dead, it smells reeeeeally bad !
Suggestion TWIMC:
Concerning the technically true statement that
".....
crop factor does not change the focal length of a lens.
It changes the field of view of the lens." I suggest that "field of view" be replaced with perhaps
"category" or "purpose" ... cuz THAT is what the crop
factor actually DOES change. Questions about the crop
factor are by definition noob questions. I believe that
my suggestion avoids tech jargon like "focal length",
which is [heaven help us] a NUMBER [scary] and so it
replaces numeric data [FL] with plain words about the
use or purpose of lenses. "Purpose" [formerly "Field of
View"] is then expressed in ordinary words rather than
by reference to "FF equivalent FL", a nasty old number.
Soooo ... I suggest that we avoid saying that a "1.6X
factor applied to a 50mm creates a FF equivalent FL
of 80mm" when we could more informatively say that
a "1.6X factor transforms a lens from "normal to mild
telephoto" ... or "mid tele" to "longer tele", or "ultra
wide" to "general purpose wide" ... etc etc. Acoarst if
the factor is 2X, we say it transforms an "ultra wide"
to a "normal", etc etc.
==============================
The noob can use this info at face value. If a noob
wants to know WHY this happens, well THEN it is
the time to bring up those "scary numbers". It's sad
but people seem to find numbers unsettling but that
words are OK. So, less numbers, use more words.
Perhaps less precise, but perhaps much friendlier.
Noobs choke on precision, they want a digestible
explanation, in plain language.
Just M
NSHO !
.