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Occasional Contributor
Posts: 11
Registered: ‎01-26-2019

Red & green outlines in photos

Hello - I am new here and thanks for having me.

I am having problems getting good focus with my 5D Mk II and I have just noticed that there are green outlines on left of objects and red on right edges. This occurs where there are strong contrasts especially between dark and light colours.
I am using a 24-105 mm 1:4 L IS USM lens.

What could be the problem please?
Feeling devastated.

VIP
Posts: 8,033
Registered: ‎08-13-2015

Re: Red & green outlines in photos

That sounds like chromatic aberration.  It is unusual to see in an “L” lens, though.  

 

IMG_2015_07_230140.Clear.Cropped_200.png

 

Notice the purple and green fringing.  

 

IMG_2015_07_230140.Clear.png

 

The shot was highly cropped.  Most lens correction algorithms can remove just about all of it.

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"I don't rent software. I use Photoshop CS6, ACR 9.8 and Lightroom 6.8 ."
Honored Contributor
Posts: 5,706
Registered: ‎11-13-2012

Re: Red & green outlines in photos

What software are you using? We can show you where to adjust it. 

John Hoffman
Conway, NH

1D X, Rebel T5i, Many lenses, Pixma PRO-100, MX472, LRCC Classic
VIP
Posts: 11,096
Registered: ‎12-07-2012

Re: Red & green outlines in photos

It is likely CA (chromatic aberration).  All lenses have it some just more than others.  Mostly it is very easy to correct in post editing.  If you don't have a good editor like Photoshop and/or Lightroom, the free from Canon DPP will do the trick.

 

"I am using a 24-105 mm 1:4 L IS USM lens."  Has this lens been damaged in any way?  Maybe just a little drop or something?

 

CA will be more apparent if you enlarge the shot a lot.  HIgh contrast areas like white on dark will show it more. If you are using LR you can set up a preset to do CA correction and lens distortion correction upon import. So you will never notice it again.

EOS 1DX and 1D Mk IV, even less and less other stuff.
Occasional Contributor
Posts: 11
Registered: ‎01-26-2019

Re: Red & green outlines in photos

I am using Photosop CS6.
Only see it at 100%

Occasional Contributor
Posts: 11
Registered: ‎01-26-2019

Re: Red & green outlines in photos

Hello. I bought both the camera and lens second-hand.
(Which was all I could afford at this time)

VIP
Posts: 11,096
Registered: ‎12-07-2012

Re: Red & green outlines in photos

"I am using Photosop CS6."

 

Shoot Raw file format and use ACR to convert the file into PS.  CA is easily corrected in ACR. Also do lens correction in ACR.

EOS 1DX and 1D Mk IV, even less and less other stuff.
VIP
Posts: 11,096
Registered: ‎12-07-2012

Re: Red & green outlines in photos

"(Which was all I could afford at this time)"

 

The 5D Mk II and ef 24-105mm f4L is a very nice combo.  It made me a lot of money for along time.

EOS 1DX and 1D Mk IV, even less and less other stuff.
Esteemed Contributor
Posts: 4,948
Registered: ‎06-25-2014

Re: Red & green outlines in photos


@Jzero wrote:

Hello. I bought both the camera and lens second-hand.
(Which was all I could afford at this time)


The 24-105mm f/4l is a pretty good lens and shouldn't be exhibiting noticeable chromatic aberration. If you can't correct it in post-processing, you might want to have Canon look at it and see if something is out of alignment. Is there any evidence that the lens has been dropped?

Bob
Philadelphia, Pennsylvania USA
Occasional Contributor
Posts: 11
Registered: ‎01-26-2019

Re: Red & green outlines in photos

Hello ebiggs.

I always shoot in RAW and if I remember correcrtly there was no (or barely perceptible) red/green outlines in PS RAW editor.
However, once the image opens from RAW to PS, then zoomed to 100% the lines are there.

 

I took this image as I was having trouble getting a focussed image (f11/100). The green and red lines are clear on the metal work against the white concrete tank stand. This is a jpeg for web, but the tiff has the lines too.

I'll look into doing what you advised.

I used a borrowed camera all last semester from uni (same Canon model and lens) yet no aberrations.

Thanks for your advice.

 

Red_Green_WEB.jpg

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