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Old May 5, 2005, 2:49 PM   #11
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I think we need helium filled lenses that just float along :!:Or Hydrogen filled ones for those more explosive situations :blah:.

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Old May 5, 2005, 10:38 PM   #12
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I used the Canon 1.4 extender on this lens with excellent results. As for the tripod collar, it's optional because the lens only weight 1.5 lbs. You don't need a tripod collar for that weight. I had no problem using the camera mount. There are many many lenses weighing as much that don't offer even an optional tripod collar.
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Old May 6, 2005, 1:29 PM   #13
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Thats pretty cool using the tele extender.

Gives you a 35mm equivalent of about a 400mm f/4 lens!

-- Terry
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Old May 6, 2005, 2:32 PM   #14
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[email protected] wrote:
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Thats pretty cool using the tele extender.
Gives you a 35mm equivalent of about a 400mm f/4 lens!
What kind of 'fuzzy' math is this???
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Old May 6, 2005, 3:18 PM   #15
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The Equivalence Factor :!except for the F4 part that ups to F5.6)

200mm(real)*1.4(tc)*1.6(crop) = 448mm(virtual).

IMHO: This thinking/converting everything to full-frame 35mm termshas got to stop.

:blah:Time to start a new anti-35mm equivalence movement :blah:

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Old May 6, 2005, 5:14 PM   #16
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PeterP wrote:
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(except for the F4 part that ups to F5.6)
Exactly: 'just' 1/2 the light! :idea:

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Old May 7, 2005, 11:46 PM   #17
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Or did you mean 'just' 1/2 the right. :blah::blah::blah:

:cart: This could easily be compensated for by simply increasing the light output of the sun. :idea: DOH :homey: Never mind.

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Old May 8, 2005, 6:03 AM   #18
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Or made worse by a polarizer! :idea:
... which can tune out the reflection from the windshield of that Benz for example :blah: :blah: :blah:
-> but it'll cost you @ least another 2-stops
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Old May 9, 2005, 1:11 PM   #19
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Hi you guys might want to read this review at http://www.eospix.com/reviews-14.html

They've reviewed the EF 70-200 f4Land the kenko 1.4x
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Old May 9, 2005, 6:33 PM   #20
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Okay, here's another example of what the F/4 can do:
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