Can anyone tell me what is causing this arc of deeper pigment on my EOS 6D

[Karenflsa]

My EOS 6D has developed a strange arc  on my pictures. It is notthe lens-works fine on another body and a differnt lens produces the same arc so definitely the camera see picture. Less noticeable when zoomed in. Any suggestions would  be gratefully received so i  have some idea before taking it in for a repair

[Karenflsa]

Thankyou so much for this detailed explanation and instructions I am collecting the right supplies to see if i can remove the issue.

[Karenflsa]

thanks

[Karenflsa]

I live in Saudi Arabia most of the year - dust is a permanent hazard unfortunately- I will professionally clean when I am in the USA again.

[Karenflsa]

thank you for the advice - much appreciated

[Karenflsa]

Thank you for your advice -much appreciated

[Karenflsa]

thank you trying to find a dust free environment where I live is not going to be easy but I will try my best.

[Karenflsa]

Thank you for the advice - much appreciated

[ebiggs1]

I normally agree with all Tim Campbell suggests except this time.  You don't sound like an experienced photographer.  If that is true I think you should not mess around inside the mirror box as Tim opines.  There are things in there that don't respond well to mistakes!  A professional C&C by Canon is your best option.

Try to change the lens when conditions are better.  I don't know why I even said that because if I need to change a lens, it gets changed. No matter where I am !  Oh, well it's just part of the game.

[Karenflsa]

Thanks and i agre with you - I am travelling this weekend and will see a professional photographer at my destination who has offered to help me with my issue -when I asked for help on this forum I did not think he was going to be there atthe weekend and was hoping it was something very easy to resolve. I appreciate your time and trouble in replying.

[Waddizzle]

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@Karenflsa wrote:

Thanks and i agre with you - I am travelling this weekend and will see a professional photographer at my destination who has offered to help me with my issue -when I asked for help on this forum I did not think he was going to be there atthe weekend and was hoping it was something very easy to resolve. I appreciate your time and trouble in replying.

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Smart.   Let a professional take a look at it.  Hopefully, he will show you what he does.