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FORUMS Canon Cameras, Lenses & Accessories Canon EOS Digital Cameras 
Thread started 13 Jan 2013 (Sunday) 20:36
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Canon 1.4x II wiggles

 
robonrome
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Jan 13, 2013 20:36 |  #1

Hi - I bought a second hand canon 1.4x II extender while travelling in Thailand (still here). Seems to work fine on my 70-200 2.8 II, but it has a bit of play between the camera body connection and the body of the extender. Not much (maybe 0.25 mm) but enough to notice and be annoying. A number of phillips head screws on that side of the extender - anyone play with these or know a way to tighten things up a bit ... not interested in taking it to a service centre as none are convenient.

thanks


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robonrome
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Jan 13, 2013 20:40 |  #2

whoops just realised I posted this to camera not lens section. I will leave to moderators whether it should be moved.


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robonrome
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Jan 16, 2013 00:15 |  #3

no-one?


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Invertalon
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Jan 16, 2013 00:55 |  #4

Are you talking about the white "exterior" wiggling? If so, mine has a little play as well. It has been at Canon for check/clean and must have been OK. The mount is solid though, only the covering has some play.


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philwillmedia
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Jan 16, 2013 01:30 |  #5

If the screws on the back end of the extender are loose causing slight back to front wobble, just tighten them with a jewellers screwdriver that fits.
If you're talking about slight rotational play, that's normal.
It's due to slight differences in the tolerances of the size of the locking hole on the extender's mount and the locking pin on the camera.
You'll probably find that all your lenses have some minor rotational play when mounted to the camera.
Some might have slightly more than others, but it's no big deal.


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xhack
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Jan 16, 2013 03:46 |  #6

philwillmedia wrote in post #15494783 (external link)
If you're talking about slight rotational play, that's normal.
It's due to slight differences in the tolerances of the size of the locking hole on the extender's mount and the locking pin on the camera.
You'll probably find that all your lenses have some minor rotational play when mounted to the camera.
Some might have slightly more than others, but it's no big deal.

^ ^ This. Both my extenders exhibit slight axial play. As do all my lens mounts, to a greater or lesser extent. Manufacturing tolerance is built-in.


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robonrome
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Jan 20, 2013 21:42 |  #7

thanks for the replies, sorry been out of internet range for a few days. What I'm seeing is different (I think) to normal axial play. This appears to be a play between the white outer casing and the mount/lens interior as Steve mentions. I'll see if I can tweak it up a bit with jeweller screwdriver as Phil suggest, but not sure those screws will have any effect on the outer casing tightness. ANyway I think it's really only cosmetic ...image quality I feel is fine.


rob - check my galleries at http://hardlightimages​.zenfolio.com/ (external link)
Zenfolio coupon discount when signing up - 93R-NCK-DUT
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amfoto1
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Jan 21, 2013 11:45 |  #8

Usually if the screws in the bayonet mount loosen you'll have trouble putting the lens on your camera. I just had to tighten them on my 70-200 (it pays to have a jeweler's screwdriver in your camera bag!) and it was obvious one or two of them had loosesned because the lens didn't want to rotate and latch onto the camera.

There's almost no play in my 1.4X II... just a tiny wink of play axially in the bayonet mount when it's latched onto some lenses or cameras. It's a tiny bit on each side, hardly enough to feel... seems normal to me.

Still, it wouldn't hurt to check the bayonet mount screws, four on each side. The only other screws you can access easily are the two holding the trim piece around the release lever and those shouldn't be prone to loosening (plus they are painted, so I'd be reluctant to apply a screwdriver to them unless I could see one had loosened).

If those screws loosen on you a lot, might want remove them one at a time and put a tiny dab of blue LocTite on them. That's the lightly holding LocTite. Don't use the stronger holding red stuff or anyone servicing the lens in the future will really curse you!


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Canon 1.4x II wiggles
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