If I get a 70mm macro, can I use a 2x tele extender with it and essentially have the use of a 140mm without significant light loss or lens vingetting?
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6th April 2011, 07:10 PM #1
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Another, nother, nother lens question: 70mm macro with 2x tele extender?
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7th April 2011, 01:20 AM #2
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Re: Another, nother, nother lens question
If you're a Canon shooter, no. The Teleconverters are only compatible with certain lenses.
Originally Posted by MiniChris
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7th April 2011, 01:56 AM #3
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Re: Another, nother, nother lens question
I are a Nikon guy.
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7th April 2011, 02:33 AM #4
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Re: Another, nother, nother lens question
I Shoot Nikon as well, and have a Tamron 90mm prime macro 2.8 and use a 2x converter with it and it works well together. Although I have only used the converter outside in daylight I haven't noticed any light loss, you may find you may need to open up a stop or two. I have never noticed any vingetting .
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8th April 2011, 02:01 PM #5
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Re: Another, nother, nother lens question: 70mm macro with 2x tele extender?
A 2X converter automatically loses 2 stops. If your 70mm is an f/2.8 you end up with f/5.6. And this also puts you near the limit for AF operation. You also lose more light if you use the macro feature at significant magnification. Make sure the converter plays well with the lens before buying.
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