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Author Topic: 6D Top Focus Point Light Bleeding Issue  (Read 12893 times)

604FF

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6D Top Focus Point Light Bleeding Issue
« on: December 12, 2012, 01:45:46 PM »
Hi all 6D owners,

I just noticed that when the top focus point is lit, there is some very noticeable light bleeding around that focus point.  I wonder if any of your 6D has the same issue.

Thanks.

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6D Top Focus Point Light Bleeding Issue
« on: December 12, 2012, 01:45:46 PM »

604FF

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Re: 6D Top Focus Point Light Bleeding Issue
« Reply #1 on: December 12, 2012, 02:09:25 PM »
Here is how it looks like. I was able to capture it via the viewfinder using my phone. Note the area above the top focus point:


georgeones

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Re: 6D Top Focus Point Light Bleeding Issue
« Reply #2 on: December 12, 2012, 03:00:39 PM »
I have same problem , only with this point , other points are fine

604FF

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Re: 6D Top Focus Point Light Bleeding Issue
« Reply #3 on: December 12, 2012, 03:06:11 PM »
Thanks for confirming georgeones!

I wonder if others have the same issue? If so, then this could be due to a design flaw and I'm not sure how Canon can fix it without replacing some hardware.

I hardly ever use that point... but bleeding is a defect  :(

Mt Spokane Photography

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Re: 6D Top Focus Point Light Bleeding Issue
« Reply #4 on: December 12, 2012, 03:09:19 PM »
What problem does it cause?   Does it affect anything?

jayarh

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Re: 6D Top Focus Point Light Bleeding Issue
« Reply #5 on: December 12, 2012, 03:13:49 PM »
my 6d has the same issue

604FF

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Re: 6D Top Focus Point Light Bleeding Issue
« Reply #6 on: December 12, 2012, 03:16:00 PM »
What problem does it cause?   Does it affect anything?

When you are using that focus point and when it lights up, it partially masks that area of your framing. It is nothing more than a visual annoyance but it is annoying and shouldn't be there.

I certainly didn't expect a new FF camera to have this type of bleeding issue. My old rebels and 60D never had this issue.


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Re: 6D Top Focus Point Light Bleeding Issue
« Reply #6 on: December 12, 2012, 03:16:00 PM »

georgeones

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Re: 6D Top Focus Point Light Bleeding Issue
« Reply #7 on: December 12, 2012, 03:19:20 PM »
Until now i didn't observed any issue cause by this , only visual

Area256

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Re: 6D Top Focus Point Light Bleeding Issue
« Reply #8 on: December 12, 2012, 03:20:24 PM »
Mine has it too.  I noticed it on the first day, and then promptly forgot about it.  It's hardly a bit deal.  The camera won't meter when the lights are on, so it isn't likely to effect anything.
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Drizzt321

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Re: 6D Top Focus Point Light Bleeding Issue
« Reply #9 on: December 12, 2012, 05:37:22 PM »
Here is how it looks like. I was able to capture it via the viewfinder using my phone. Note the area above the top focus point:



Not to worry. I'm an expert for this job. Red or Black?     ;D ;D ;D

This is sounding more and more like the 5d3 light leak 'issue', that wasn't really an issue. Only thing I can think this would affect is metering, and that's if the light stays on and it's low light. Maybe some light leaking from the view finder down into the sensor, but it'd have to be a pretty long exposure with very low light for that. If it stays on.
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RustyTheGeek

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Re: 6D Top Focus Point Light Bleeding Issue
« Reply #10 on: December 13, 2012, 09:20:53 AM »
Umm... No.  This is a reflection in the viewfinder area where the focusing screen and focus points exist, not the sensor area.  Verify this by seeing if the problem exists in liveview.  Wait, those points don't show up in live view because....
Yes, but what would  surapon  say ??  :D

Drizzt321

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Re: 6D Top Focus Point Light Bleeding Issue
« Reply #11 on: December 13, 2012, 11:47:40 AM »
Umm... No.  This is a reflection in the viewfinder area where the focusing screen and focus points exist, not the sensor area.  Verify this by seeing if the problem exists in liveview.  Wait, those points don't show up in live view because....

Right, but the light can, possibly get through the AF partial-mirror on the main mirror and hit the sensor. On a fast exposure or with lots of light it likely won't make a difference, but in a long exposure (>1sec) it may. Also, it may affect metering, if the red light doesn't turn off when the camera determines the final metering when the shutter button is pressed.
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neuroanatomist

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Re: 6D Top Focus Point Light Bleeding Issue
« Reply #12 on: December 13, 2012, 11:49:13 AM »
Right, but the light can, possibly get through the AF partial-mirror on the main mirror and hit the sensor. On a fast exposure or with lots of light it likely won't make a difference, but in a long exposure (>1sec) it may.

The AF illumination light would be shut off during the exposure anyway.
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Re: 6D Top Focus Point Light Bleeding Issue
« Reply #12 on: December 13, 2012, 11:49:13 AM »

tomscott

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Re: 6D Top Focus Point Light Bleeding Issue
« Reply #13 on: December 13, 2012, 01:01:47 PM »
I had this on my 350D but on the right one... was quite annoying took it to canon, no fix.
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EYEONE

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Re: 6D Top Focus Point Light Bleeding Issue
« Reply #14 on: December 13, 2012, 02:16:26 PM »
Even if the light was on during an exposure there is no way that little amount of extra light would affect the exposure. If that was enough light to throw off the exposure then the the AF point light would already be throwing it off. But, as neuro said, the lights are off then anyway.

I don't see this as an issue aside from the possible annoyance.
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Re: 6D Top Focus Point Light Bleeding Issue
« Reply #14 on: December 13, 2012, 02:16:26 PM »