topic Re: 1.4 Extender Used On Canon t4i. in EOS DSLR & Mirrorless Cameras

1.4 Extender Used On Canon t4i.

themanfromvan — Tue, 25 Jul 2017 02:25:03 GMT

I understand that the autofocus function could be rendered non functional when using an extender with certain camera bodies and lens combinations. I have a t4i camera body and the two lenses I use primarily are a 24-105 mm f4 and a 70-200 mm f2.8. I have tried to ascertain this information from searching the forums but can't see to find a defintive answer. Thanks.

Re: 1.4 Extender Used On Canon t4i.

cicopo — Tue, 25 Jul 2017 03:13:22 GMT

This thread is the best source of TC info I know of.

http://photography-on-the.net/forum/showthread.php?t=41922

Re: 1.4 Extender Used On Canon t4i.

ebiggs1 — Tue, 25 Jul 2017 14:17:37 GMT

First there is no good reason to use a t-con on a 24-105mm. So that's out of the question. The 1.4x II works fairly well with the 70-200mm f2.8L fo rme. So I see no reason why it won't do so for you.

Re: 1.4 Extender Used On Canon t4i.

TTMartin — Tue, 25 Jul 2017 16:18:24 GMT

@themanfromvan wrote:
I understand that the autofocus function could be rendered non functional when using an extender with certain camera bodies and lens combinations. I have a t4i camera body and the two lenses I use primarily are a 24-105 mm f4 and a 70-200 mm f2.8. I have tried to ascertain this information from searching the forums but can't see to find a defintive answer. Thanks.

Yes, a 1.4X TC or even the 2X TC will work and maintain autofocus on your T4i camera with the 70-200 f/2.8 lens.

The EF 24-105 f/4L IS is not listed on the compatibility chart for the genuine Canon Teleconverters and the two may not physically mount together.