Canon 6D Mirror, Dust or scratch? Help needed

So my camera is basically brand new, I only used it during a shoot this weekend. It was outside and I switched between lenses a couple of times but I was careful to do it quickly and gently.

I noticed a mark on the mirror now and I can't tell if its dust or a scratch

Well if it's dust, you can blow it off with a blower and you'll know. I wouldn't touch it with my bare hands, get swab used for cleaning the sensor.

Ok so if it is a small small line mark then will it have any effect on IQ? And if so it would have come that way from the factory correct?

Probably shouldn't affect the image quality. It could have come from the factory that way but not likely. If you're still within your return period, I would try to get a replacement unit. Otherwise, it will be on your dime to have it repaired.

I would not bother it if it were mine,opinions will vary.

I don't think there is any way I would have done it, I take amazing care of my stuff, if it doesn't affect IQ at all and I shouldn't worry then I wouldn't.

Is there anything to do to limit mirror scratches? I'm careful with changing lenses

DO you see it in the viewfinder? Does it bug you?
At that location should not affect focus or metering, and the mirror does not effect picture quality.

Try to use a proper camera blower and technique or just leave it alone if you can't see it in the viewfinder.

bulldog-yota wrote in post #16819950
DO you see it in the viewfinder? Does it bug you?
At that location should not affect focus or metering, and the mirror does not effect picture quality.

Try to use a proper camera blower and technique or just leave it alone if you can't see it in the viewfinder.

Oh so the mirror has no effect on IQ? Just focusing and metering? I for some reason thought that it bounced light off of the lens to the sensor. Is that not it's function?

The mirror bounces light to the viewfinder. It flips out of the way to let light fall on the sensor when you press the shutter. The mirror has no impact on the photo.

It doesn't appear to be a large scratch. Depending on where the main subject is, you might not notice it. I would take some practice shots and see what they look like.

Ok so it's a total non issue, camera focus beautifully and takes wonderful pictires. I thought the mirror was involved in the picture quality

giballi wrote in post #16820460
Ok so it's a total non issue, camera focus beautifully and takes wonderful pictires. I thought the mirror was involved in the picture quality

Yup,So relax and enjoy the hobby and keep taking great pics.

get yourself a rocket blower. I get all sorts of gunk that fly on my mirror. The blower dislodges them temporarily...

Could be wrong but it looks like a mark on the focusing screen. The screen is removable with a simple tool from canon. You can also purchase inexpensive replacement screens. If it is the screen, just get another one and pop it in.

I think you could be wrong.
If we are talking about the short horizontal mark at bottom left of mirror, it maintains its position in both shots. If 'twere on the focus screen, it'd've moved its position in the second shot.
But I could be wrong . . .