Originally posted by pingflood Maybe you can explain how the 31/1.8 is "faster" than the 17/0.95 then, using your definition.
I can just explain the difference between what I was saying and what you think I was saying.
The statement that I made (and which was to my knowledge reflecting what twitch meant to say) is the following:
"The FF equivalent lens of the 17.5/0.95 lens is a 35/1.9. A 35/1.9 lens is slower than a 31/1.8 lens (a FF lens). To recapitulate, the 31/1.8 lens is faster than
the FF equivalent of the 17.5/0.95 lens"
I'll repeat the last statement:
Statement A: "The 31/1.8 lens is faster than
the FF equivalent of the 17.5/0.95 lens"
Note that this statement is not identical to, nor does it mean the same thing as:
Statement B: "The 31/1.8 lens is faster than the 17.5/0.95 lens"
Statement A is what twitch and I are talking about. Statement B is how you read it. You are arguing against something that you made up yourself, so technically you are arguing with yourself, not with us.