L Lens and EOS Rebel T3i body

[calilove27]

I've been asking so many questions on here, haha.
But I'm here with another question. So I've somewhat been researching on the net about using L lens with a t3i and quite a handful of people are saying that they wouldn't work well together? So L lens aren't recommended for EOS Rebel bodies? Can someone explain this to me please.
I just recently bought the T3i and I just want a good lens. Preferably for landscape photos. I also take some sports, low light, and portrait photos.
Suggestions for landscape and all around photography lens would be great (:

[liamphotography]

Not going to buy 2-3 more crop bodies just to test. Both SL1s are brand new with latest firmware so unless someone else has actually tested L lenses with this model and confirmed it works, I'll go by what Canon told me on the phone.

[ebiggs1]

What exactly do they do?  What are the shooting conditiond and settings on the camera?The more details you can give the better.

[Stephen]

Hi liamphotography!

We checked with our technical support team, and they don't know of any reason your lenses shouldn't work with your SL1, unless the lens isn't mounted properly or you're using an extender.

If you've verified that your 100-400 is mounted properly to your girlfriend's SL1, and the camera is reading the lens properly (you're getting aperture values), then we'd suggest reaching back out to our US-based support team at 1-800-OK-CANON (800-652-2666) for some further troubleshooting so we can get to the bottom of this! 

[liamphotography]

I have tried ALL modes on the SL1, even Manual, which is how I shoot all the time. The 17-40mm, 24-105mm and 100mm Macro the camera can operate the AF on the lens, but cannot seem to get an accurate focus lock on a subject in any kind of light. We even tested in very bright sunlight during the summer, same issue. If we switch the lens to manual AF then we can get focus and take photos no problem. The 100-400mm, the SL1's cannot even operate the AF, you press the shutter halfway and no AF points light up and no AF movement out of the lens at all.

Again, ALL of these L lenses work fine on all of my Full Frame bodies and they also worked on the T3i when I had one of them a couple of years ago, but none of them work on the SL1. And I know everyone is trying to help, but I am not a noob, I have been shooting both film and digital over 25 years.

[Waddizzle]

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@liamphotography wrote:

No idea, but I doubt it's the same one as the SL1 I have not read everything on the Mark IV, but the article I read earlier said only the SL1, T5i and T6i had this new Hybrid system.

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I'm pretty sure "L" lenses work on the T5i and T6i.  The AF Hybrid II system is also in the EOS M3.  I'll test it later.

[liamphotography]

Cool, I appreciate the feedback, I am at a loss as well as to why they don't work on the SL1. I don't know anyone with a T5i or T6i so I have no method to test.

[ebiggs1]

"If we switch the lens to manual AF then we can get focus ..."

You mean you switch to MF and you manually focus the lens?  Or you switch to MF and then the SL-1 works in auto focus?

[Stephen]

Our support team has all of the gear you've listed and can test it with you on the phone to ensure compatibility. 

[liamphotography]

No, I should have been more clear. If I put any of the lenses in MF, and focus manually, I can get good focus and make an image, no problem.

Also of note, we have around 8 of the EF "Gold Band" USM lenses and ALL of them work perfectly on the SL1's, that's why maybe I thought there was something slightly different on the L lenses AF system.