EOS Rebel T3i When I look through the view finder I noticed dark blue coloring in the corners

[lcparker]

When I look through the view finder I noticed dark blue coloring in the corners.  Do you know the cause and fix?  The camera is a EOS Rebel 3ti.

 

[deebatman316]

Hello Icparker welcome to the forums. Is this a new problem you recently noticed. What lens are you using with your camera. Does this problem appear in live view too. You have a picture attached showing the rear LCD.

-Demetrius

EF 16-35mm F/2.8L III USM, EF 24-70mm F/2.8L II USM, EF 28-135mm F/3.5-5.6 IS USM, EF 50 F/1.8 STM

EOS 40D & 5D Mark IV

430EX III-RT & 600EX II-RT

[lcparker]

I am using Ef 100-400 canon zoom lens. I only see the dark corner coloring when I view the picture looking through the viewfinder. The picture has beff RF n already taken.

[Tronhard · Accepted solution]

Hi.  Are you using this lens with a lens hood, and if so what exact model is it?  To me, it looks like you have vignetting from the lens hood, which is surprising for using a telephoto lens.

[deebatman316]

I was thinking the same thing too. I haven't seen a telephoto lens with vignetting like that before.

-Demetrius

EF 16-35mm F/2.8L III USM, EF 24-70mm F/2.8L II USM, EF 28-135mm F/3.5-5.6 IS USM, EF 50 F/1.8 STM

EOS 40D & 5D Mark IV

430EX III-RT & 600EX II-RT

[Tronhard]

I have, when the wrong lens hood is used.

[deebatman316]

I noticed some lens hoods for different lenses fit fine but you'll have vignetting. 

-Demetrius

EF 16-35mm F/2.8L III USM, EF 24-70mm F/2.8L II USM, EF 28-135mm F/3.5-5.6 IS USM, EF 50 F/1.8 STM

EOS 40D & 5D Mark IV

430EX III-RT & 600EX II-RT

[lcparker]

FYI, I wasn’t using a lens hood.

[lcparker]

Yes I have, called canon they said asked the community 

[deebatman316]

Which EF 100-400mm lens Canon has released 2 different models and each have a different lens hoods made for them. You can find the full name of the lens on the outer silver or white ring of the lens after the Red ring.

-Demetrius

EF 16-35mm F/2.8L III USM, EF 24-70mm F/2.8L II USM, EF 28-135mm F/3.5-5.6 IS USM, EF 50 F/1.8 STM

EOS 40D & 5D Mark IV

430EX III-RT & 600EX II-RT