Did anyone try sigma 30 on 5d ?

Started Jun 12, 2010 | Discussions thread
coreyh Senior Member • Posts: 1,010
Re: Anyone try a 1.4X extender with it?

misha wrote:

coreyh wrote:

I know the 1.4x extender has been used successfully on the sigma 10-20mm enabling it to go quite a bit wider than if it was just mounted straight onto the camera.

Wonder if it would work for the sigma 30mm. I don't see why not...

Why does an extender (TC) make a lens wider - shouldn't it be narrower?
--
Misha

That's what I thought too, but there is a thread on POTN that shows the sigma 10-20mm is actually wider with less vignetting when used with the extender.

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Canon T2i
Canon 10D - Backup
Canon 18-55mm IS
Tamron 60mm F2.0 Macro
Sigma 10-20mm EX DC
Canon 70-300mm IS
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