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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 04 Dec 2011 (Sunday) 06:49
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Canon 10-22mm and extension tube question

 
jdando
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Dec 04, 2011 06:49 |  #1

Looking for a wide angle for use with my 1DmkIII (APS-H sensor).

Would the use of the Canon Extension Tube EF 12 (external link) allow me to mount and use the Canon 10-22mm EFS (external link)? Obviously wanting to get to the 10mm image. Yes I understand there would be some vignetting, but I would rather have that than the lens bumping my mirror.

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Wilt
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Dec 04, 2011 12:01 |  #2

The problem with using any very short FL retrofocus design lens for macro work is that often the focus point ends up 'inside the lens'...you cannot focus on the subject even with the subject touching the front element!


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Dec 04, 2011 12:17 |  #3

this would probably be easier:
http://www.youtube.com​/watch?v=IDfyu_fuOf4 (external link) and allow you to retain infinity focus...while the tubes wouldn't...there's also those that put a 1.4TC on a third party UWA to get it to work...the problem with the canon is there's no EF-S compatible TC


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jdando
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Dec 04, 2011 13:19 |  #4

Wilt wrote in post #13493123 (external link)
The problem with using any very short FL retrofocus design lens for macro work is that often the focus point ends up 'inside the lens'...you cannot focus on the subject even with the subject touching the front element!

Yikes, I am not sure I understand any of what you said. My desire is not to do macro work, but to get a decent ultra wide angle lens that will not damage my camera.

Regarding the teleconverter, I would prefer not to add additional glass/magnification in trying to get an ultra wide lens.


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RTPVid
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Dec 04, 2011 13:28 |  #5

Have you considered the Sigma 12-24mm F4.5-5.6 EX DG ASP HSM?


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Dec 04, 2011 13:47 |  #6

jdando wrote in post #13492286 (external link)
Looking for a wide angle for use with my 1DmkIII (APS-H sensor).

Would the use of the Canon Extension Tube EF 12 (external link) allow me to mount and use the Canon 10-22mm EFS (external link)?

It would let you mount the 10-22 without issues, but not to use it unless you just want a gentle blur of colour for a picture. The extension tube moves the plane of best focus so close that it is inside the lens and the image circle is still too small to cover even with the tube.

The Sigma 12-24mm zoom is designed for full frame and is very rectilinear. That is probably the best choice if you want to go really wide without using a fisheye. DxO Optics Pro does a great job of correcting the remaining distortion and CA if it bothers you.


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Dec 04, 2011 14:02 |  #7

jdando wrote in post #13493392 (external link)
Yikes, I am not sure I understand any of what you said. My desire is not to do macro work, but to get a decent ultra wide angle lens that will not damage my camera.

Regarding the teleconverter, I would prefer not to add additional glass/magnification in trying to get an ultra wide lens.

One cannot simply use an extension tube to move the entire lens forward (and thereby moving the rear element forward so that a larger reflex mirror does not strike it). Moving the optics forward changes the focus range, so that Infinity focus is no longer achievable...the lens becomes suitable only for close distance usage!


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sempaidavid
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Dec 20, 2011 21:06 |  #8

I use mine on my 1d mkIV all the time. It works great and is pretty darn wide. I was thinking of trying the extension tube thing too. I am going to buy some soon anyway, so I'll let you know.


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Dec 20, 2011 21:38 as a reply to  @ sempaidavid's post |  #9

You can use the 10-22 on the 1D(APS-H) series, if you pull the rear baffle off the back of the lens. You can only shoot down to ~11mm though, or the lens will hit the mirror. If you feel confident, that you won't forget to NOT go below 11mm.. do it. ;)


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Canon 10-22mm and extension tube question
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