Extenders.
- Thread starter albion
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- Stewart
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There are alternatives to the Canon 1.4x; Kenko and Sigma, for example, make 1.4x extenders. I don't have any experience of them but I'm sure somebody will be along soon who has.
2x extenders are a whole different story though, for two reasons. Firstly the impact on image quality is considerably greater than with a 1.4x. Secondly you won't be able to autofocus with that camera/lens combination.
2x extenders are a whole different story though, for two reasons. Firstly the impact on image quality is considerably greater than with a 1.4x. Secondly you won't be able to autofocus with that camera/lens combination.
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- Richard
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Standard answer to your question is exactly as Stewart has said.
I have tried them all, and optically the best Extender is the Canon 1.4x and it works very well on your lens. I bought one, but then tried a Kenko 1.4x 300 Pro up against it, and promptly took the Canon back. The Kenko is not quite as sharp (though you have to look hard to see it) but it is a lot smaller and lighter, and about half the price. Best of all for me is that because the Kenko doesn't have the Canon's sticky-out front, it can be used on a few more lenses. For example, it works very well on the EF 100mm macro, creating a 140mm f/4 which I like very much for the extra working distance it gives for macro
These two extenders, specifically, are commonly regarded as the best, and Sigma's 1.4x also gets good mentions. The cheaper 1.5x and all 2x jobbies are actually rather nasty.
Richard.
I have tried them all, and optically the best Extender is the Canon 1.4x and it works very well on your lens. I bought one, but then tried a Kenko 1.4x 300 Pro up against it, and promptly took the Canon back. The Kenko is not quite as sharp (though you have to look hard to see it) but it is a lot smaller and lighter, and about half the price. Best of all for me is that because the Kenko doesn't have the Canon's sticky-out front, it can be used on a few more lenses. For example, it works very well on the EF 100mm macro, creating a 140mm f/4 which I like very much for the extra working distance it gives for macro
These two extenders, specifically, are commonly regarded as the best, and Sigma's 1.4x also gets good mentions. The cheaper 1.5x and all 2x jobbies are actually rather nasty.
Richard.
