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Author Topic: Canon 2x and 1.4x mk3 extenders  (Read 17843 times)

Alex

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Canon 2x and 1.4x mk3 extenders
« on: February 19, 2013, 08:52:20 PM »
Hey guys,

After buying both of the Canon mk3 extenders I was rather disappointed that they can't be used together.. I thought it was strange as the 2x has the recess which it appears to accommodate the 1.4x but doesn't..

I thought that was crazy after previous versions could, so I thought I can make this work with some duct tape and super glue and nails..

Only joking.. What I did find that with a 12mm extension tube it will allow the 1.4x to sit behind the 2x and work fully...

Also the strange thing was it only picked up the 2x extender so its maximum aperture was 5.6 with both 2x and 1.4x being used.. Plus a bonus it focused to infinity :)

Got some great pics of the moon tonight :)
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Canon 2x and 1.4x mk3 extenders
« on: February 19, 2013, 08:52:20 PM »

rpt

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Re: Canon 2x and 1.4x mk3 extenders
« Reply #1 on: February 19, 2013, 09:24:34 PM »
Interesting! Nice shot of the moon. How did you focus? AF or live view or manual? Also what were your settings?
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Alex

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Re: Canon 2x and 1.4x mk3 extenders
« Reply #2 on: February 19, 2013, 09:37:51 PM »
Thank you..

That one I manually focused it, but I did try it with AF and it was almost spot on.. Settings were ISO 800, 1/250 @ f/8
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Menace

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Re: Canon 2x and 1.4x mk3 extenders
« Reply #3 on: February 20, 2013, 12:01:11 AM »
Lovely image - well done
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Alex

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Re: Canon 2x and 1.4x mk3 extenders
« Reply #4 on: February 20, 2013, 09:39:15 AM »
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Efka76

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Re: Canon 2x and 1.4x mk3 extenders
« Reply #5 on: February 20, 2013, 11:20:22 AM »
Very nice picture of moon!
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vmk

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Re: Canon 2x and 1.4x mk3 extenders
« Reply #6 on: February 20, 2013, 02:11:20 PM »
Nice picture
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Re: Canon 2x and 1.4x mk3 extenders
« Reply #6 on: February 20, 2013, 02:11:20 PM »

R1-7D

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Re: Canon 2x and 1.4x mk3 extenders
« Reply #7 on: February 20, 2013, 02:20:32 PM »
That's a very useful trick for getting both extenders to work together! Thanks! Interesting that it still picked up the f-stop at 5.6.


Nice picture too!
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neuroanatomist

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Re: Canon 2x and 1.4x mk3 extenders
« Reply #8 on: February 20, 2013, 02:23:14 PM »
Well...darn, now I need a 12mm extension tube...  ;) If it works the same, that means the 1.4xIII-EF12-2xIII combo behind a 600/4 will give me 1680mm that reports as f/8 and will AF on the 1D X. 
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Alex

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Re: Canon 2x and 1.4x mk3 extenders
« Reply #9 on: February 20, 2013, 02:59:44 PM »
Thanks guys for your comments


Quote from: neuroanatomist on February 20, 2013, 02:23:14 PM
Well...darn, now I need a 12mm extension tube...  ;) If it works the same, that means the 1.4xIII-EF12-2xIII combo behind a 600/4 will give me 1680mm that reports as f/8 and will AF on the 1D X.

I really wish I had that 600mm in my kit bag.. Nice piece of glass
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Don Haines

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Re: Canon 2x and 1.4x mk3 extenders
« Reply #10 on: February 20, 2013, 04:15:57 PM »
Quote from: neuroanatomist on February 20, 2013, 02:23:14 PM
Well...darn, now I need a 12mm extension tube...  ;) If it works the same, that means the 1.4xIII-EF12-2xIII combo behind a 600/4 will give me 1680mm that reports as f/8 and will AF on the 1D X.


While you are at it.... try borrowing a second 2X converter and try for 3360mm :)

Also, you can use the Sigma 1.4X and 2X together without an extension tube..... I tried it.. with a full moon... There's something about a full moon that brings out the crazy people.
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johnf3f

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Re: Canon 2x and 1.4x mk3 extenders
« Reply #11 on: February 20, 2013, 09:31:15 PM »
Must try that setup on my 800mm!
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alexanderferdinand

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Re: Canon 2x and 1.4x mk3 extenders
« Reply #12 on: February 22, 2013, 01:40:31 PM »
Very nice picture!!
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Re: Canon 2x and 1.4x mk3 extenders
« Reply #12 on: February 22, 2013, 01:40:31 PM »

sagittariansrock

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Re: Canon 2x and 1.4x mk3 extenders
« Reply #13 on: February 22, 2013, 05:46:26 PM »
Quote from: neuroanatomist on February 20, 2013, 02:23:14 PM
Well...darn, now I need a 12mm extension tube...  ;) If it works the same, that means the 1.4xIII-EF12-2xIII combo behind a 600/4 will give me 1680mm that reports as f/8 and will AF on the 1D X.

Wait till the next lunar mission- then you'd be able to get some nice portraits!
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TexPhoto

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Re: Canon 2x and 1.4x mk3 extenders
« Reply #14 on: February 22, 2013, 09:11:02 PM »
Cool!  I used to have a 1.4X I, and a 2X II, and they fit together.  When I got V III of both, and they would not fit together, i consoled myself with the theory that this was Canon and me growing up.

And now, I must resist the urge to buy a 12mm extension tube... Must resist!,... already ordered on eBay...
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Re: Canon 2x and 1.4x mk3 extenders
« Reply #14 on: February 22, 2013, 09:11:02 PM »
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