In a message dated 5/23/01 6:50:27 AM Pacific Daylight Time,
[EMAIL PROTECTED] writes:
<< Looking at the EOS Magazine article again, the length of the 400mm f4 is
317mm.
The DO version is 233mm. So, *technically*, Canon has a 300mm lens that
gives
you 400mm magnification? Will this change the "compression" of the image
(i.e., where the background appears closer than it really is) or am I over
thinking this? The DO just bends the light steeply allowing the same
compression, etc. in a shorter barrel?
317mm seems quite a bit short of 400mm. >>
I have a Tokina 300/4.0 ATX lens that is only 187mm long. And it's not even
DO. But it does have SD elements. So I guess it's even more possible to make
a "long" lens shorter.
George
My web page:
http://members.nbci.com/_XMCM/Yegey/EntrancePage.html
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