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Occasional Contributor
Posts: 8
Registered: ‎11-11-2019

three f/2.8 sensitive AF points failed in my 5D mark ii

I accidently pointed the camera to the sun and burned the AF. The three f/2.8 AF points fail in auto focusing, but the other 6 AF points can still work well.

 

What is the problem with those 3 AF points? Is there any part I can buy and change by myself? If sent to Canon for repair, how much will it cost?

 

Thanks,

JJ

Esteemed Contributor
Posts: 3,493
Registered: ‎02-17-2016

Re: three f/2.8 sensitive AF points failed in my 5D mark ii

You burned out the phase detection autofocus chip in the mirror box. I have no idea how much it will cost.

Respected Contributor
Posts: 1,176
Registered: ‎11-19-2017

Re: three f/2.8 sensitive AF points failed in my 5D mark ii

[ Edited ]

5D2...  time for a new camera.  OP, I'm sure you learned a valuable lesson too. 

Rick
Bay Area - CA
~6D2 (f/w 1.0.4) ~16-35mm f2.8L II, 50 f1.8 STM, 85 prime USM, 70-200 f2.8L IS II ~70-300 USM II ~Sigma 24-70 f2.8 Art (f/w 2.02)
~Sigma 150-600 C + TC1401 1.4x (f/w 2.00) ~Speedlite 430 EX II ~DxO PhotoLab Elite ~Windows10 Pro1903 ~EVGA RTX 2080 FTW3 Ultra
VIP
Posts: 11,642
Registered: ‎12-07-2012

Re: three f/2.8 sensitive AF points failed in my 5D mark ii

" If sent to Canon for repair,..."

 

I doubt Canon will do anything as the 5D2 is beyond service life which is what your camera needs.

EOS 1DX and 1D Mk IV and several lenses!
VIP
Posts: 11,642
Registered: ‎12-07-2012

Re: three f/2.8 sensitive AF points failed in my 5D mark ii

"I accidently pointed the camera to the sun ..."

 

How long was the "accidentally pointed" time?  DSLR's  have a mirror in the viewfinder, which covers up most of the sensitive equipment most of the time.  If you're looking at the Sun through your camera, you're really only damaging your eyes. When you take a photo you do expose all your camera's sensitive equipment to the Sun. A short glance at the Sun is unlikely to harm anything. Leaving your camera and lens, for that matter, pointed at the Sun for a long time can.

It also depends on what time of day and how intense the Sun is at that time.  Sunrises or Sunsets for instance.

 

This small dose of Sun does not hurt anything, so it depends of how much and how long.

 

_OS10824.jpg

EOS 1DX and 1D Mk IV and several lenses!
Esteemed Contributor
Posts: 3,493
Registered: ‎02-17-2016

Re: three f/2.8 sensitive AF points failed in my 5D mark ii

Except for autofocus where the chip is exposed through the partial silvering.

Occasional Contributor
Posts: 8
Registered: ‎11-11-2019

Re: three f/2.8 sensitive AF points failed in my 5D mark ii

I took the image of Mercury transit yesterday using my 5 inch telescope with a solar film covering the scope. My friend had a problem with his solar film, so I took mine onto his scope for testing. I covered my lens by a black jacket, but the jacket then fell off the ground. The scope was tracking the sun for at least ten minutes.
VIP
Posts: 11,642
Registered: ‎12-07-2012

Re: three f/2.8 sensitive AF points failed in my 5D mark ii

"The scope was tracking the sun for at least ten minutes."

 

Not good! Smiley Sad

EOS 1DX and 1D Mk IV and several lenses!
Occasional Contributor
Posts: 8
Registered: ‎11-11-2019

Re: three f/2.8 sensitive AF points failed in my 5D mark ii

Yes, I know. It is already burned. I can use the 6 f/5.6 AF points, but they are slow and not as accurate as the center f/2.8 AF point.

VIP
Posts: 11,642
Registered: ‎12-07-2012

Re: three f/2.8 sensitive AF points failed in my 5D mark ii

"Except for autofocus where the chip is exposed through the partial silvering."

 

There is no except. If you read my post, it specifies "how long" and "most of the sensitive equipment".  A short glance will not harm anything. 

EOS 1DX and 1D Mk IV and several lenses!
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