Mr.Ft Loc: Central New Jersey

I was wondering if anyone was using this combo on an 80D. I just wanted to know what to expect with auto focus, IQ ect.

Thanks
Tom

CHG_CANON Loc: the Windy City

It will work fine. The max aperture will change to f/5.6 which is no issue as the 80D supports f/8.

If you don't micro adjust, I find stepping down to say f/8 gives a sharper image with the 1.4x and the f/4 zoom.

imagemeister Loc: mid east Florida

I used a Tamron SP 1.4X with mine - results were astounding on a 60D ! - AF will slow down just a tad. As mentioned, do a focus cal with and without the TC - because you CAN on an 80D. Even with IS, I do recommend being on support of some kind as your AF and compositional accuracies will be better also. ( ie bodypod, monopod, bracing, facial stabilizer ). And, for the support, in most cases, you will need a tripod collar.

OTOH, if you maximize your IQ with the native lens, and since the 80D has such a good sensor, ( high density) you can CROP to 1.4X without costing money or 1-f-stop of light and if need be, do pixel enlargement and still maintain equal, if not better IQ than using the TC.

JBruce Loc: Northern MN

Just this past week I have been using my 80D with 70-200L f4 and canon TC 1.4 II (note this is the II). It is a very good combination and produces an image that is better than I can crop from the 200 alone. I believe the III is rated even better than the II at focus speed. I have no focusing issues with the very good Canon AF system on the 80. The lens/camera has been micro focused as has the 1.4 addition. The 80d has the ability to establish a separate micro focus with the addition of the TC. I love the possibilities with these combinations. I should add that the Tamron extender WILL NOT work with the 80d at all, ever.

John

imagemeister Loc: mid east Florida

Very interesting ....