Lenses

[ebiggs1]

"I keep telling you guys, the way to keep your wife from complaining about your equipment purchases ..."

Way over that Robert. Mine got over it many years, I mean decades ago.  I guess it may have something to do with the, "I need it for my work", thingy.  Now I doubt she can even tell if one comes or goes.

[ebiggs1]

"... it is only a 35mm if you don't use it. Once you use it, it's a 56. -The End"

This is where, my friend, you need to change your thinking.  The lens remains a 35mm no matter what you use it on.  The thing that changes is the angle of view. A good way to point this out and make it more real is, folks that use medium format or 645's, etc., don't think of a "crop" factor. Although there is one just the other way round. Example a 645 has a .62 crop factor. They just know which lens produces what results.

[acc]

Oh, I know all that optical gibberish. I am not as big a dummy as you think! (I did a research paper about 55 years ago on compensated free form lens design and other such flotsam and jetsam, so there!! Just don't ask me to explain what the hell it means.)

My only point to the person whom I was addressing was that if he bought this thing, he wasn't getting what he thought was a wide angle lens. That's all. He appeared to be thinking that was the case.

[kvbarkley]

Which is why you need to read the whole thread, we hashed over the fact that 35 mm is not WA on crop frame ad nauseum.

[acc]

Correct. But the person I addressed the comments to was not aware of that.

[ebiggs1]

"But it is only a 35mm if you don't use it. Once you use it, it's a 56"

I didn't say that, you did.   It is a 35mm no matter where it sits or gets used or not. That is all I was saying. 

"...compensated free form lens design and other such flotsam and jetsam,..."

I have no idea what that means.