Image review glitch

[metroshane]

I was shooting with my 6D (several years old) and I took a card out and put a new one in (always formatting).  When I did this the 2 second preview was fine.  But upon image review there was a small grey square of pixels (5% of total frame) in the lower left side of the lcd.  I pulled the card and downloaded the image and it was fine.  So I put a new card in, formatted, and it did the same thing.  Put a 3rd card in, same.  The only way I would get it to stop was to "reset to factory settings" everytime I put in a new card.  After a few times of having to do this...the problem stopped.  I've tried recreating it so I can figure out what's going on and it's not doing it anymore.  That part's great, but I'm worried something is about to break.  Anyone had this problem before?

[Waddizzle]

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@metroshanewrote:

I was shooting with my 6D (several years old) and I took a card out and put a new one in (always formatting).  When I did this the 2 second preview was fine.  But upon image review there was a small grey square of pixels (5% of total frame) in the lower left side of the lcd.  I pulled the card and downloaded the image and it was fine.  So I put a new card in, formatted, and it did the same thing.  Put a 3rd card in, same.  The only way I would get it to stop was to "reset to factory settings" everytime I put in a new card.  After a few times of having to do this...the problem stopped.  I've tried recreating it so I can figure out what's going on and it's not doing it anymore.  That part's great, but I'm worried something is about to break.  Anyone had this problem before?

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A “new” card does not necessarily mean it is a “good” card.  What brand, size, and type of cards?

[ebiggs1]

" Put a 3rd card in, same."

Are these good high quality SD cards?  Bargin basement cards are not a good choice.  And, you do, do a low level format?

And, and you do it in the camera not on your computer?

[metroshane]

Sorry, by "new" I meant "fresh".  Cards I've had for a while.  I format everytime from the camera.  By the way, it's stopped doing it, which is good.  I'm just afraid it's going to go down sometime soon.

[ebiggs1]

"I'm just afraid it's going to go down sometime soon.'

I hear ya. I would be too.  Get new Sandisk or Lexar or Transend cards and ditch those you have.