03-31-2023 03:02 PM
My Canon 6Dii started showing this little black crack-like looking thing on the edge of each of my photos. I originally thought it was the lens, but tried multiple lenses and it shows up each time.
You can see the "crack" less when it's at f1.4, but it really shows at f22.
Any thoughts as to what this may be and how I may be able to fix it? This camera has never been dropped and I just tried a sensor clean... nothing changed. I can't see anything when I look inside the camera.
03-31-2023 03:30 PM - edited 03-31-2023 03:47 PM
Since you tried multiple lenses, it is probably lint or some other foreign object on your sensor assembly. The built in sensor cleaning only works when debris is loose and easily shaken off.
If you do not feel comfortable manually cleaning your sensor assembly by hand, you will have to get a pro to do it or give you further evaluation. Depending on where you live, you may be able to find someone locally, if not, contact Canon support.
My cameras get stubborn objects on the sensor assembly from time to time and I use a dry sensor swab, made specifically for camera sensor cleaning, to gently wipe it off. It's really not that hard.
03-31-2023 03:36 PM
That looks a broken shutter curtain. Cleaning the image sensor would remove dust. If it's still there it's more than likely a shutter curtain.
03-31-2023 03:59 PM
Indeed. Start with a visual inspection (flashlight) and go from there.
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03-31-2023 04:01 PM
X2 also use Mirror lockup.
03-31-2023 04:42 PM
Seems like an insect on the sensor.
03-31-2023 05:10 PM
Given that it gets sharper when you stop down I would agree that it is likely an insect on your sensor at the very edge. Look closely.
Rocket Blower should take care of it.
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