-= 7D2 owners unite! Discuss and post photos!

graham121 wrote in post #17261998
I am thinking that 12ft may be a bit on the close side for MFA'ing at 600mm - also it is not that far away from Minimum focusing distance of just under 9ft.

My understanding is that the recommended distance is 50 x focal length in mm, ie 50 x 600mm = 30m.

Maybe worth a try to see if your MFA values change.

True. I do feel it is working better now though. I also need to test in better lighting. But I got 2 more weeks again if I had to return it. So we'll see how it ends up. But so far, it's looking much better.

Yes, definitely do your MFA stuff at the recommended distances; I've had MUCH better luck with that and, I believe, is the problem I'm currently seeing. I just did a quick and dirty MFA at about half the normal distance for my lenses.

@Kickflipkid: Also, I did see your question on the 150-600, Matt, but I have it well packed away at this point.

Keyan wrote in post #17262019
Yeah, which is odd, the AF guide link that has been rolling around implies it is only active in all points mode. Regardless, it won't work in expansion mode, so that shouldnt have been affecting focus.

Right. And I used expansion mode in 99% of the 1500 shots I took with mine before returning it for replacement. So it shouldn't have been responsible for my problems.

digital paradise wrote in post #17262022
I was testing the zones when shooting.

So iTR could be effecting your results...

ACES great shots. I think all of the Sigmas will most likely need to re-chipped or if they are the newest ones need their programming updated once Sigma can figure out Canon's code well enough.

Eric set your sensitivity -1 or -2 to keep the jumping down on how fast the camera ges to a new target.

Yeah; I've tried that too, John. I think those settings will work well for me when I get back to shooting some of the local airshows next summer; but for things down closer to the ground, with clutter I think I'm going to stick to the manual selections.

KatManDEW wrote in post #17262037
Right. And I used expansion mode in 99% of the 1500 shots I took with mine before returning it for replacement. So it shouldn't have been responsible for my problems.

Not saying it was, there can be bad copies out there.

Keyan wrote in post #17262060
Not saying it was, there can be bad copies out there.

Right. I was agreeing with you. Just added that I was using expansion mode, so it shouldn't have been my problem.

Ok, sorry, I am getting all confused by who had what issue and who returned what or did what. I think I am confusing myself.

Snydremark wrote in post #17262054
Yeah; I've tried that too, John. I think those settings will work well for me when I get back to shooting some of the local airshows next summer; but for things down closer to the ground, with clutter I think I'm going to stick to the manual selections.

Gotcha. I would think that 4 or 8 point expansion is all you would want. I think the zone would be best with a background that is far away.

2n10 wrote in post #17262088
Gotcha. I would think that 4 or 8 point expansion is all you would want. I think the zone would be best with a background that is far away.

Yeah, that's the conclusion I'm currently at, myself.

I used all points AF (selected the initial point to start acquisition) during a football game and was surprised how well it did with iTR. I typically use single+4 expanded. It was able to lock on and pass off the subject to neighboring points and track accurately. I think it might be even better than my 1dx in that mode. I had it set to case 4 and moved tracking sensitivity down one click toward "locked on".

jase1125 wrote in post #17262096
I used all points AF (selected the initial point to start acquisition) during a football game and was surprised how well it did with iTR. I typically use single+4 expanded. It was able to lock on and pass off the subject to neighboring points and track accurately. I think it might be even better than my 1dx in that mode.

It will be fun learning the AF system I see. I am looking forward to the challenge. Great info to know.

jase1125 wrote in post #17262096
I used all points AF (selected the initial point to start acquisition) during a football game and was surprised how well it did with iTR. I typically use single+4 expanded. It was able to lock on and pass off the subject to neighboring points and track accurately. I think it might be even better than my 1dx in that mode. I had it set to case 4 and moved tracking sensitivity down one click toward "locked on".

Thanks! I have another game (daytime this time; yay) next Saturday; so, I'll give those a shot.