Does the 24-105 L accept a Teleconverter?

The Canon site says their 1.4 TC is not compatible with the 24-105L IS USM. Is there a third-party TC that will work with this lens? If so, does anyone have any experience with this combo (sharpness, vignetting)? Thanks.
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JC

Jim Coplan said:

The Canon site says their 1.4 TC is not compatible with the 24-105L
IS USM. Is there a third-party TC that will work with this lens? If
so, does anyone have any experience with this combo (sharpness,
vignetting)? Thanks.
--
JC

Click to expand...

Yes, it does. I used a kenko pro 300 with it (1.4x TC). IQ is ok. I didn't pixel peep, but offhand there was little loss at 105mm. I didn't look at the 24mm or other FL though. I tried it just to see what I can get for emergencies where I don't have a long lens but have to put a TC on the 24-105L.

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• Caterpillar

'Always in the process of changing, growing, and transforming.'

caterpillar said:

Jim Coplan said:

The Canon site says their 1.4 TC is not compatible with the 24-105L
IS USM. Is there a third-party TC that will work with this lens? If
so, does anyone have any experience with this combo (sharpness,
vignetting)? Thanks.
--
JC

Click to expand...

Yes, it does. I used a kenko pro 300 with it (1.4x TC). IQ is ok. I
didn't pixel peep, but offhand there was little loss at 105mm. I
didn't look at the 24mm or other FL though. I tried it just to see
what I can get for emergencies where I don't have a long lens but
have to put a TC on the 24-105L.

Click to expand...

There's no advantage to using the Kenko on the 24-105 wide open on a 1.6-crop camera. However, by f8, the advantage is pretty significant.



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Lee Jay
(see profile for equipment)

ljfinger said:

caterpillar said:

Jim Coplan said:

The Canon site says their 1.4 TC is not compatible with the 24-105L
IS USM. Is there a third-party TC that will work with this lens? If
so, does anyone have any experience with this combo (sharpness,
vignetting)? Thanks.
--
JC

Click to expand...

Yes, it does. I used a kenko pro 300 with it (1.4x TC). IQ is ok. I
didn't pixel peep, but offhand there was little loss at 105mm. I
didn't look at the 24mm or other FL though. I tried it just to see
what I can get for emergencies where I don't have a long lens but
have to put a TC on the 24-105L.

Click to expand...

There's no advantage to using the Kenko on the 24-105 wide open on a
1.6-crop camera. However, by f8, the advantage is pretty significant.

Click to expand...

True. But as I said, I just tried it for emergencies. I have no intent of using the lens with TCs. However, it was pretty decent considering it had a TC on. At f4 (f5.6 with a TC it was ok in the center). A bit better at f5.6 (f8 with a TC). I didn't go to f8 (f11 with a TC) anymore because the shutter speeds were already too low and I just wanted a quick glance at it wide open and 1 stop down.

The OP also was just asking if it is possible and in my experience it is. BTW, nice examples to illustrate your point!

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• Caterpillar

'Always in the process of changing, growing, and transforming.'

Thanks guys. Reason for my question was that I'm going on a trip with my 20D and want to travel light. I own the 70-200 F4L and a couple of non-L lenses, but I'm thinking that a 24-105 F4L IS, plus a 1.4 TC, would get me by. Certainly for all the landscape shots (San Francisco & Santa Fe, NM)
--
JC

Has anybody tried other conveters such as the Canon or Sigma with the 24-105? I'm guessing that the results may be different?

The main questions I would have are:

• How does the AF perform?
• Does IS still work?
• By how much is the IQ affected?

If the IQ is affected significantly then you may find a consumer lens like the Sigma 70-300 apo or Canon 70-300IS may offer better image quality and performance even if they are not L class - I hope that makes sense!