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Occasional Contributor
Posts: 7
Registered: ‎09-13-2020

Re: Canon 50mm 1.2L HELP!!!

settings are exatcly the same each and every time it happens.

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VIP
Posts: 10,382
Registered: ‎08-13-2015

Re: Canon 50mm 1.2L HELP!!!

I'm surprised that no one has asked this, yet.  What metering mode are you using for the two sample shots?

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"Doctor told me to get out and walk, so I bought a Canon."
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Honored Contributor
Posts: 6,925
Registered: ‎11-13-2012

Re: Canon 50mm 1.2L HELP!!!

OP stated settings are the same.
John Hoffman
Conway, NH

1D X Mark III, Many lenses, Pixma PRO-100, MX472, LR Classic
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Honored Contributor
Posts: 6,925
Registered: ‎11-13-2012

Re: Canon 50mm 1.2L HELP!!!

You purchased from Adorama. Why not return to them?
John Hoffman
Conway, NH

1D X Mark III, Many lenses, Pixma PRO-100, MX472, LR Classic
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VIP
Posts: 10,382
Registered: ‎08-13-2015

Re: Canon 50mm 1.2L HELP!!!


@jrhoffman75 wrote:
OP stated settings are the same.

....and the metering mode is?

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"Doctor told me to get out and walk, so I bought a Canon."
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VIP
Posts: 13,025
Registered: ‎12-07-2012

Re: Canon 50mm 1.2L HELP!!!

"I haven't had this camera miss exposure for over 6 years, with more than 6 lenses..."

 

This proves nothing except you had good luck with your gear ....so far.  It can fail on the very next shot.

 

"it seems to me the culprit is most likely the difference/recent change, which is the week old lens."

 

If you asign it to the lens and it is not the lens a new or different lens will not fix the problem. That is the issue here. Returning it is not your first option.

"I did a bunch of testing with multiple lenses this morning.  The only time it happens is with the new 50mm."

 

OK that is fine but you need to do the test it on a different or several different cameras.

Then if it becomes so that it is the lens at fault you need to call Canon support 1 (800) 652-2666. A lens sent to Canon will come back better than new as it will have a tech do a through fully functional diagnosis on it.  Way more that the average  off the line lens gets.

 

EOS 1DX and 1D Mk IV and several lenses!
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Moderator
Posts: 1,696
Registered: ‎10-25-2012

Re: Canon 50mm 1.2L HELP!!!

Be nice, Ernie! 😀

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VIP
Posts: 13,025
Registered: ‎12-07-2012

Re: Canon 50mm 1.2L HELP!!!

??????????? Was that not nice?  It is the correct advice. If it is not the lens at fault replacing it will not help!

EOS 1DX and 1D Mk IV and several lenses!
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Reputable Contributor
Posts: 531
Registered: ‎10-21-2016

Re: Canon 50mm 1.2L HELP!!!

You don't have to keep making exposures to find out what the fault is.

 

Put the camera in manual mode, look into the lens from the front, hold down the DOF preview button, turn the dial slowly so that the lens steps through each aperture setting in turn. If the aperture is sticking you will soon be able to see it as it won't respond to each click of the dial as it should.

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Reputable Contributor
Posts: 820
Registered: ‎12-24-2013

Re: Canon 50mm 1.2L HELP!!!

[ Edited ]

The EXIF data is available for both photos. The EXIF data is identical for both photos, and they were taken at the same time. 

That means it doesn't matter what the metering mode was, or what shooting mode the camera was in.  All it means is the lens is defective and it is most likely sticking aperture blades.

Mike Sowsun
S110, SL1, 80D, 5D Mk III
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