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FORUMS Canon Cameras, Lenses & Accessories Canon EOS Digital Cameras 
Thread started 31 Jul 2017 (Monday) 19:55
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6D2 came, AF question

 
renodcc
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Jul 31, 2017 19:55 |  #1

Hi got my 6d2, I am noticing when using single point AF in the VF, sometimes the square turns red and there is a bit of a red flash (sort of like my 6d used to do to confirm focus), but sometimes the square just stays black. Does anyone know why my focus square sometimes does not turn red, and sometimes does on AF confirm? (I turn the beep off)

Thanks for your time.




  
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TeamSpeed
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Jul 31, 2017 19:57 |  #2

Do you have the AF VF illumination setting turned to Auto? Depending on what light level it reads, it may fire the red LED inside so you can see the LCD, and other times not. That is the best I guess I can muster. :)


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renodcc
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Jul 31, 2017 20:42 |  #3

Thanks!, I will check that later. Just testing and initial feeling is that the outer AF points are usable even in low light (f/1.4, 1/125, ISO 4000 so far that I've tested). The center point seems maybe slightly less reliable than my 6d, but not sure yet.




  
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mwsilver
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Jul 31, 2017 23:31 |  #4

TeamSpeed wrote in post #18415829 (external link)
Do you have the AF VF illumination setting turned to Auto? Depending on what light level it reads, it may fire the red LED inside so you can see the LCD, and other times not. That is the best I guess I can muster. :)

Yep. That's the way I have my 7D Mark II set up.


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Aug 01, 2017 17:39 |  #5

Everyone here is pretty much correct. Let me add one clarification... if the focus point is over a bright white area the validation point shows up black. If the focus point rests over a dark area the point shows up red.


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Aug 02, 2017 13:30 |  #6

renodcc wrote in post #18415826 (external link)
...sometimes the square turns red and there is a bit of a red flash (sort of like my 6d used to do to confirm focus), but sometimes the square just stays black.

I'm glad you asked this. I just moved from a 60D to 80D and could not figure out what was going on. Sometimes a red flash, sometimes not (but I have the beep on, so at least I was getting that). Anyway, good to know it isn't a camera malfunction.


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Aug 02, 2017 15:34 |  #7

By default, the AF points light up in red only when focus is achieved in low light, or with a dark subject. You can alter settings in CFnII-15

If the Option for 'ON Illuminated' is not On, the red will not flash while in AI Servo or continuous shooting


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Aug 02, 2017 16:03 |  #8

rh18 wrote in post #18417496 (external link)
I'm glad you asked this. I just moved from a 60D to 80D and could not figure out what was going on. Sometimes a red flash, sometimes not (but I have the beep on, so at least I was getting that). Anyway, good to know it isn't a camera malfunction.

You know you really don't need the beep. There is a focus acquisition light in the lower right hand corner of the viewfinder


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Aug 02, 2017 16:12 |  #9

mwsilver wrote in post #18417627 (external link)
You know you really don't need the beep. There is a focus acquisition light in the lower right hand corner of the viewfinder

...so it is where it can easily blink and not be noticed, as you are looking into a bright viewfinder in daylight and concentrating on what your subject is doing so that you can get a good expression captured.


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mwsilver
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Aug 02, 2017 16:13 |  #10

Wilt wrote in post #18417598 (external link)
By default, the AF points light up in red only when focus is achieved in low light, or with a dark subject. You can alter settings in CFnII-15

If the Option for 'ON Illuminated' is not On, the red will not flash while in AI Servo or continuous shooting

The 7D2 has the ability to light up the points in AI Servo as well. I don't know if the 80D has that capability. In any case in Ai Servo that feature is very annoying since it blinks on and off as AI Servo attempts to refocus.


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Post edited over 1 year ago by mwsilver. (2 edits in all)
     
Aug 02, 2017 16:17 |  #11

Wilt wrote in post #18417637 (external link)
...so it is where it can easily blink and not be noticed, as you are looking into a bright viewfinder in daylight and concentrating on what your subject is doing so that you can get a good expression captured.

After 8 years of shooting EOS cameras in all kinds of conditions I've haven't had an issue seeing it yet. Of course if you are in AI Servo you don't get the focus light, but I suspect the beep won't work either in that shooting mode.


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Aug 02, 2017 16:44 |  #12

mwsilver wrote in post #18417643 (external link)
After 8 years of shooting EOS cameras in all kinds of conditions I've haven't had an issue seeing it yet. Of course if you are in AI Servo you don't get the focus light, but I suspect the beep won't work either in that shooting mode.

I was shooting youth lacrosse tournament about three months ago, and had a grandson in the game. I put the camera into AI Servo in order to focus and track him. And ordinarily I use single AF point focus for less active shooting, but put it into Zone focus so i was paying attention to which AF points were on top of which subjects. No more red illumination in the viewfinder, I had to divert my attention to the focus indicator...only after I realized that could not necessarily rely upon peripheral vision to see that corner! (and the camera was so new to me that I didn't think about moving the indicator to an 'AF' display inside the frame area rather than the dot on the periphery.)


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Aug 02, 2017 17:05 |  #13

When I'm in AI Servo I tend to side with all point automatic selection. It's pretty nifty that you can first activate focus, and you'll be presented with one focus point which you move around. Then with it set, I back button AF and I can see the focus points track what I initially set.


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6D2 came, AF question
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