Canon 2x and 1.4x mk3 extenders

[Alex]

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

[rpt]

Interesting! Nice shot of the moon. How did you focus? AF or live view or manual? Also what were your settings?

[Alex]

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

[Menace]

Lovely image - well done

[Alex]

Lovely image - well done

Thank you

[Efka76]

Very nice picture of moon!

[vmk]

Nice picture

[R1-7D]

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!

[neuroanatomist]

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. 

[Alex]

Thanks guys for your comments

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

[Don Haines]

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.

[johnf3f]

Must try that setup on my 800mm!

[alexanderferdinand]

Very nice picture!!

[sagittariansrock]

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!

[TexPhoto]

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...