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Occasional Contributor
Posts: 7
Registered: ‎01-12-2020

6D MK2 focussing issue

Hi!

 

I'm experiencing an issue with focus that I can't figure out if it is a malfunction or wrong settings.

 

Current settings are:

ONE SHOT

Manual mode

Center Spot AF

 

Sometimes, I half-press shutter button to focus on my subject and when I fully press the shutter button, focus unlocks and wait till it focuses again and when is does, shutter is released.

 

This is a disaster if you focus and recompose to take the photo decause except for the lag, your focus is then on the recomposed spot and not on the subject.

 

Any clue?

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Esteemed Contributor
Posts: 2,358
Registered: ‎11-19-2017

Re: 6D MK2 focussing issue

Greetings,

What lens are you using?

 

Are you shooting Live View of through the view finder?

 

Stepping out, but others will reply shortly after you answer the questions. 

~Rick
Bay Area - CA
~6D2 ~Many Lenses ~DxO PhotoLab Elite ~Windows10 Pro ~EVGA RTX 2080 FTW3 Ultra ~Pixma Pro-100
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Occasional Contributor
Posts: 7
Registered: ‎01-12-2020

Re: 6D MK2 focussing issue

I'm shooting through VF

 

The problem was noticed while using 50mm / f1.4 but tested 24-105 / f4 and does the same thing.

 

It's not a constant behavior and this is what I can't understand.

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VIP
Posts: 10,385
Registered: ‎08-13-2015

Re: 6D MK2 focussing issue

[ Edited ]

@nikostis69 wrote:

Hi!

 

I'm experiencing an issue with focus that I can't figure out if it is a malfunction or wrong settings.

 

Current settings are:

ONE SHOT

Manual mode

Center Spot AF

 

Sometimes, I half-press shutter button to focus on my subject and when I fully press the shutter button, focus unlocks and wait till it focuses again and when is does, shutter is released.

 

This is a disaster if you focus and recompose to take the photo decause except for the lag, your focus is then on the recomposed spot and not on the subject.

 

Any clue?


My camera does not attempt to refocus unless I release the half-press on the shutter.  In One Shot mode, the default behavior  is for both focus and exposure to lock together until the shutter is fired.  But, you must maintain pressure on the shutter.  AND, you must fire the shutter before the metering timer expires.

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"Doctor told me to get out and walk, so I bought a Canon."
Highlighted
Occasional Contributor
Posts: 7
Registered: ‎01-12-2020

Re: 6D MK2 focussing issue

Metering timer refers to shooting in LV.

 

For sure I don't release the shutter button Smiley Frustrated

 

The greatest delay between AF locking and shooting is not more than 2-3s (in cases I'm waiting fot the "moment")

 

But this happens even if I have almost 0 delay.

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VIP
Posts: 10,385
Registered: ‎08-13-2015

Re: 6D MK2 focussing issue


@nikostis69 wrote:

Metering timer refers to shooting in LV.

 

For sure I don't release the shutter button Smiley Frustrated

 

The greatest delay between AF locking and shooting is not more than 2-3s (in cases I'm waiting fot the "moment")

 

But this happens even if I have almost 0 delay.


The metering timer is not exclusive to shooting in LV.  The LV menu allows you to change it, while it is fixed for other modes.

 

907621E1-EEBC-47BC-AFD3-046472BA710F.jpeg

 

But, that point is neither here nor there.  Once you lock focus and exposure in One Shot mode with a half press, the camera will remain locked and loaded until you either fully press the button, release the button.

 

Once One Shot locks focus and exposure, you should see the focus confirmation icon in the viewfinder, the round ball.  This icon remains for as long as you keep the shutter half pressed.  The default behavior for the [AF-ON] will also keep focus and exposure locked.  

 

Confirm whether or not you are seeing the focus confirmation icon while you recompose your shots.  Your description of the issue is consistent with the shutter half press being released.  Maybe you have a bad shutter button.  You could also use the default behavior of the [AF-ON] button to keep focus and exposure locked as you recompose, too.

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"Doctor told me to get out and walk, so I bought a Canon."
Highlighted
Occasional Contributor
Posts: 7
Registered: ‎01-12-2020

Re: 6D MK2 focussing issue

The round ball appears in half-press but goes off in full-press and trying to focus again.

 

Having a faulty shutter button has crossed my mind...

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Respected Contributor
Posts: 1,077
Registered: ‎01-25-2018

Re: 6D MK2 focussing issue

I have never used the 6D MK2 but I have owned and used a lot of Canon camera bodies and I think the operation of focus lock is pretty standard across bodies.  As long as you are in 1 shot (not servo) AF mode, then once you achieve focus at half shutter depression it should stay locked.

 

Did it suddenly start randomly doing this?  It could be an issue with the shutter release button itself where the contact is intermittent at the half depressed position causing it to drop out of focus lock mode.  What is the focus indicator annunciator showing in the viewfinder while you are holding the shutter release at the halfway point?

 

Rodger

EOS 1DX M3, 1DX M2, 1DX, 5DS R, 1D M2, EOS 650 (film), many lenses, XF400 video
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Reputable Contributor
Posts: 531
Registered: ‎10-21-2016

Re: 6D MK2 focussing issue

It sounds to me that you are releasing the pressure slightly and losing the focus lock without realising it.

 

If you want to focus and recompose then you are much better setting the camera up for back button focus and taking focus off the shutter button.

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VIP
Posts: 10,385
Registered: ‎08-13-2015

Re: 6D MK2 focussing issue

[ Edited ]

@nikostis69 wrote:

The round ball appears in half-press but goes off in full-press and trying to focus again.

 

Having a faulty shutter button has crossed my mind...


The focus locked icon should go away when you fully press the shutter, but not before you fully press down.  Could you be lifting your finger slightly as you get ready to fully press the shutter button?  This is easy to do when you move the camera to recompose a shot.

 

Like I pointed out in a previous post, you can use the default behavior of the [AF-ON] button, instead holding the shutter half pressed, to keep focus and exposure locked.

 

Also, you [may] want to go to C.Fn.I-8 and select Spor Metering as a metering mode that locks exposure after focus.  The default setting is only for evaluative metering to lock exposure.  

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"Doctor told me to get out and walk, so I bought a Canon."
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