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07/20/2004 10:30:30 AM · #1 |
| Will the canon 1.4x extender work with say a canon 100mm macro lens? Canon says the extender can only be used with primes at 135mm and over ... why? Does it physically not fit? |
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07/20/2004 10:40:54 AM · #2 |
It also only works with certain L lenses so I don't believe it will work with the macro lens. (I don't know why the restriction)
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07/20/2004 10:44:51 AM · #3 |
Originally posted by hopper:
Will the canon 1.4x extender work with say a canon 100mm macro lens? Canon says the extender can only be used with primes at 135mm and over ... why? Does it physically not fit? |
Lenses which except teleconverters the mounts are shaped different way so they can fit inside.
Before you buy teleconverter check the list of lenses they can fit in ! |
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07/20/2004 10:51:34 AM · #4 |
Originally posted by hopper:
Will the canon 1.4x extender work with say a canon 100mm macro lens? Canon says the extender can only be used with primes at 135mm and over ... why? Does it physically not fit? |
You are correct, the 100mm prime will simply not physically accomodate the teleconverter. The extender actually protrudes into the host lens when attached... like a male/female connection. I'm not sure if this is true for all teleconverters, but for the 1.4x/2x Canon, this is true.
Message edited by author 2004-07-20 10:52:24.
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07/20/2004 10:53:46 AM · #5 |
Originally posted by pitsaman:
Lenses which except teleconverters the mounts are shaped different way so they can fit inside.
Before you buy teleconverter check the list of lenses they can fit in ! |
So a 3rd party teleconverter would fit? Why would canon do that? |
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07/20/2004 11:06:25 AM · #6 |
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07/20/2004 11:11:23 AM · #7 |
Originally posted by hopper:
So a 3rd party teleconverter would fit? Why would canon do that? |
From what I understand, it is to maximize image quality when using L-series lenses with a teleconverter. The lenses and teleconverters were designed with each other in mind. The Canon TC's front optic protrudes into the cavity at the back of those lenses which can accomodate it. |
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07/20/2004 11:12:12 AM · #8 |
Originally posted by hopper:
Originally posted by pitsaman:
Lenses which except teleconverters the mounts are shaped different way so they can fit inside.
Before you buy teleconverter check the list of lenses they can fit in ! |
So a 3rd party teleconverter would fit? Why would canon do that? |
They do it to get the quality glass in there. I believe if you use and extentsion tube it will fit. The other brand extenders should all carry a Mickey Mouse brand label.(besides Nikor of course)
Tim
I haven't actually seen that sigma extender it looks better than the cheap ones as well.
Message edited by author 2004-07-20 11:15:26. |
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07/20/2004 11:12:26 AM · #9 |
| Thanks Kosta ... so much for getting a macro lens AND a telephoto lens at the same time (someone have and extra $1200 for the 180mm L?) |
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