Archive 2006 · 1.4 X extenders

rwenglish1
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p.1 #1 · 1.4 X extenders

Hi I have a question, I am wondering can you put two 1.4 X extenders together and still have a sharp picture. Now I know this depends on the lens, so I am going to say, using it with a 300 f/ 4 is.
Thanks,
rw

Dec 08, 2006 at 09:10 PM

Forrest Egan
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p.1 #2 · 1.4 X extenders

I can say...they can't both be Canon, unless you put an extension tube between them.

And, unless you tape the contacts, you won't be able to AF on a 20D...adding two 1.4x will drop you to f/8 and the 20D can only AF to f/5.6.

Dec 08, 2006 at 09:16 PM

gasrocks
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p.1 #3 · 1.4 X extenders

Yes, you can do it and yes, 2 1.4x's will give you faster Af than a 2X but I do not think you'll be happy with the IQ on the 300/4 L IS.

Dec 08, 2006 at 09:23 PM

rwenglish1
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p.1 #4 · 1.4 X extenders

Ok thanks to everyone for the answers, I have a chance to get a second Canon1.4 X , and was just wondering if it would be worth it.

Thanks again,
rw

Dec 08, 2006 at 09:31 PM

Forrest Egan
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p.1 #5 · 1.4 X extenders

Oh wait, I forgot, if you use two TCs the camera will only see one of them and think it's at f/5.6...so you will still have AF on the 20D.

Dec 08, 2006 at 09:32 PM

EOS20
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p.1 #6 · 1.4 X extenders

You should be able to stack 2 1.4x TC since you can stack a 1.4x and 2x TC on one another. But picture quality woulden't be that great though.

Dec 08, 2006 at 10:20 PM

Ben Horne
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p.1 #7 · 1.4 X extenders

EOS20 wrote:
You should be able to stack 2 1.4x TC since you can stack a 1.4x and 2x TC on one another. But picture quality woulden't be that great though.

That's just because the 2x has an empty space in the back of the lens for the 1.4x to fit in to. Two 1.4x canon converters will not fit together without an extension tube.

Dec 08, 2006 at 10:36 PM

Forrest Egan
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p.1 #8 · 1.4 X extenders

But you can mix a Canon 1.4x TC with a 3rd party 1.4x TC.

Dec 08, 2006 at 10:39 PM


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