7D Mark II - Focus Discussions

popoff wrote in post #17885850
JM45ACP if you have Focal did you do the focus Consistency test here is a screen shot of one I did last night for you to have a look at.

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I have focal but have never tried that. I guess it only does that one one shot. As we have seen earlier in this thread that people were getting good AF in one shot but not in AI Servo.

digital paradise wrote in post #17885857
They do not show in AI Servo, only in One Shot. If you try this in One Shot and the centre point cannot locate enough contrast an outer point will illuminate followed by the centre point which I figure shows the intended AF point. It is always only one assist point, never two or more. If you read Canon's documentation it says expansion modes work the same way in AI Servo as it does in One Shot. Based on that I figure only one assist point is active at any given time but as per discussion we only see the centre point illuminated in the view finder and in DPP, etc in post.

Thanks for confirming that DP. I recon this could be the source of a lot of John's troubles.

John, for static subjects please try using single point, or spot AF for smaller subjects, for a while and see if your results are more consistent.

digital paradise wrote in post #17885863
I have focal but have never tried that. I guess it only does that one one shot. As we have seen earlier in this thread that people were getting good AF ion one shot but not in AI Servo.

Yes your right it only does it in one shot but I had the 7D mark 1 and I could never get a test like this a nice strait line it was like a mountain range up and down all the way then I sent it into get calibrated and it was much better not perfect but I was a lot happier and getting more consistent shots.

Lester Wareham wrote in post #17885799
Update to my point in red above, the manual says:

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So this wording suggests the assist points in play are not shown in AI Servo.

UPDATE: Checking some of my own shots using expansion (surround) I can only see the "selected" point shown as focussed, in a few cases this was not even on the subject yet focus was achieved. There is a bit of uncertainty as these are in-flight shots but I am now fairly sure you can not rely on the indicated focus point to be the actual one used when in expansion and AI servo.

you are right, Only he initial selected AF point gets displayed and kept with the exif info. I don't know what happens in the case of 65pt auto Af selection. But, if you take thumb off BBF, no Af point appears on the overlay.

Update from Canon's repair facility and I quote... "We have received your equipment for evaluation and repair. Based on our initial examination, we will begin the necessary repairs at no charge to you. You can
expect the repairs to be completed and shipped back to you within approximately 7 business days* from the date shown above. There is no need to respond to this notice"

Also called Canon about sending email a few photos to the repair facility to better describe the issue and to find out what the "necessary repairs" are and what went wrong.

gschlact wrote in post #17886336
you are right, Only he initial selected AF point gets displayed and kept with the exif info. I don't know what happens in the case of 65pt auto Af selection. But, if you take thumb off BBF, no Af point appears on the overlay.

My memory is in servo all the focus modes show no active point if AF is not active at the time of shutter release. I suspect the Mk I was this way too but i might not have noticed.

Ill play around with it and see what it does maybe try f8 for closer shots at 400mm.

I have to recheck the MFA at 400mm

From what I can remember it was a pretty calm day but the bird could have moved with out me noticing. The MFA was done at a further distance the bird was maybe 6 feet away I did the adjustment at 100mm @ 17 feet and 400MM@ 39 feet.

IS was on and I just went from 1.0.5 to 1.0.4. After doing the firmware change I probably should have reconfirmed the MFA adjustments.

Both are set to focus.

Will do, I'm going to set the camera so when I use single shot it will automatically be in spot AF or single point.

Thanks for the help
John

I have checked and for me FM changes do not effect MFA but it does not hurt to check.

I'm still a one shot person for static objects, like to use the shutter and get the AF confirmation. Not saying AI Servo will not take a static shot and do a good job. I programmed the AF-ON button's "detail set" so AI Servo kicks in. Just another option.

digital paradise wrote in post #17887906
I have checked and for me FM changes do not effect MFA but it does not hurt to check.

I'm still a one shot person for static objects, like to use the shutter and get the AF confirmation. Not saying AI Servo will not take a static shot and do a good job. I programmed the AF-ON button's "detail set" so AI Servo kicks in. Just another option.

So how does that work, you have to hold AF on down to get servo and shutter to get single shot focus hold?

Lester Wareham wrote in post #17887914
So how does that work, you have to hold AF on down to get servo and shutter to get single shot focus hold?

Yes. I set the AF operation to one shot and use the shutter. When I press and hold the AF-ON it automatically switches to AI Servo. Using the detail set there are a few other programming options. I programmed the * button so AI Servo, 65 point zone and Case 6 automatically activate which I use for emergency BIF. I wish Canon had of added Drive Mode to that menu so High Speed Continuous would activate as well. Still hoping for a FW update for that.

Just press "info" when you are programming the AF-ON or * buttons.

JM45ACP wrote in post #17887856
Ill play around with it and see what it does maybe try f8 for closer shots at 400mm.

I have to recheck the MFA at 400mm

From what I can remember it was a pretty calm day but the bird could have moved with out me noticing. The MFA was done at a further distance the bird was maybe 6 feet away I did the adjustment at 100mm @ 17 feet and 400MM@ 39 feet.


IS was on and I just went from 1.0.5 to 1.0.4. After doing the firmware change I probably should have reconfirmed the MFA adjustments.

Both are set to focus.

Will do, I'm going to set the camera so when I use single shot it will automatically be in spot AF or single point.

Thanks for the help
John

Just to clarify, we are recommending single or spot point AF whether in ai servo or one shot, just for a while. The expanded mode in the examples you posted really was the the most likely culprit of the misplaced focal plane. It wasn't as if there was not sharp focal plane it was just misplaced.

digital paradise wrote in post #17887923
Yes. I set the AF operation to one shot and use the shutter. When I press and hold the AF-ON it automatically switches to AI Servo. Using the detail set there are a few other programming options. I programmed the * button so AI Servo, 65 point zone and Case 6 automatically activate which I use for emergency BIF. I wish Canon had of added Drive Mode to that menu so High Speed Continuous would activate as well. Still hoping for a FW update for that.

Just press "info" when you are programming the AF-ON or * buttons.

Thanks. At present I have AF ON and * set for different focus point and case numbers.

I'll have to give your setting a try when I can get to the camera, it's currently under a pile of stuff as we are decorating.

Isn't that the truth, Lester!

other things get piled upon our camera duties.....

Reminds me of the bumper sticker:

Stuff Happens

CB

perhaps a tad more + mfa? about 20-25 ft

I think I stated it wrong I will set it to spot or partial metering for both AI servo and One Shot.
Here is a chart I found helpful that explains metering modes.
Thanks
John

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