Would someone with better math skills than me (that's pretty much everyone) please verify this: does the resulting focal length of a 203mm Kodak Ektar plus Kodak Telek Minus 1 come out to about 260mm?

Thanks in advance.

I estimated a 50mm distance between lens centers and got 240mm. Then I estimated a 25mm distance between lens centers and got 247mm. Your lens focal length should be somewhere between those two values.
Harry

A minus 2 lens would get you approx. 295mm, requires nearly 12' of bellows at infinity! My 360mm lens with a -2 lens gives me nearly a 900mm lens,it requires a 36" or more bellows on my view.

<font size=-1>[ This Message was edited by: worldphoto on 2005-05-15 00:42 ]</font>

Harry,

Thanks...makes sense now.

Greg