A couple 7D Mark II questions

[strikerwy]

I haven't had a lot of time to really intensively use my 7D II yet, but I've already noticed a couple of quirks that are contrary to what I understand to be true both in forums like this and also in the manual. I have 2 5D IIIs and have previously used 3 1st generation 7ds. All of those bodies have allowed me to select AF focus points using the rear dial (vertical movement), the joystick (omn-idirectional), or the top dial (horiontal). The manual for the 7DII states that such should be true of this body as well (page 81 of the manual). That's what confounds me. When I spin the top dial to select points (something I do in my sleep with the other bodies), rather than move the AF points, the camera simply cycles through the AF modes, which I find extremely frustrating. Is this how the camera works for everyone else? Am I misreading the manual when it says that the top dial should change the horizontal focus points? Is this a flaw with my body?

Secondly, I have the Sigma 300-800 f5.6. I also bought the just released TC-1401 Sigma 1.4 teleconverter to use with the lens on the 7DII. This combination should effectively provide me with f8 and should allow autofocusing using group G and center AF point. (page 86 of manual) When mounted, the camera registers f8, but regardless of which AF mode or zone selected, nothing initiates autofocus with this combination. Again, is there a trick I'm missing? Am I not understanding the manual? Does anyone know about any incompatibilities between this lens+tele combo and the camera I'm not aware of?

I appreciate any thoughts, suggestions, corrections to my understanding, or otherwise helpful comments. Thanks.

 

[ReggieABrown]

For the auto point selection try changing it in the menu under custom controls, I believe. My top dial jump to different auto focus points.

 

[candc]

You can check with sigma but afaik the tc-1401 only allows AF at f/8 with the new global vision lenses. It should work with the canon or kenko tc's if you have one of them.

 

[strikerwy]

Thanks guys. I finally figured out the AF point select. I'll do some checking with a different TC so see if that solves the AF issue at f8. I knew someone here could help me out!