Canon Community Canon Community
 


Reply
New Contributor
Posts: 3
Registered: ‎07-04-2019

Red Dots on 5d markiii - Help, please...

Red dots on my sensor... Hot pixels or dirty sensor?Red Dots.jpg

VIP
Posts: 8,316
Registered: ‎08-13-2015

Re: Red Dots on 5d markiii - Help, please...

Dirty sensors tend to create dark grey smudges.  I think you need to take more test shots.  Those spots could be birds.

----------------------------------------------------------------------------------------------------------------------------------------------------------

"I don't rent software. I use Photoshop CS6, ACR 9.8 and Lightroom 6.8 ."
New Contributor
Posts: 3
Registered: ‎07-04-2019

Re: Red Dots on 5d markiii - Help, please...

They appear on every photo
New Contributor
Posts: 3
Registered: ‎07-04-2019

Re: Red Dots on 5d markiii - Help, please...

They appear on every photo. It was clean for a period and then suddenly something happened...
Valued Contributor
Posts: 372
Registered: ‎10-21-2016

Re: Red Dots on 5d markiii - Help, please...

They could be hot/stuck pixels but to be sure you need to take a shot of a completely blank plain surface ( a sheet of paper), it is better if the shot is completely mis-focused then faulty pixels will still show up as sharp spots, do not use the sky there are too many things floating about in it.

Enlarge the picture to 100%, make a small crop of the problem area then post it on here to get a proper diagnosis.

Highlighted
VIP
Posts: 8,316
Registered: ‎08-13-2015

Re: Red Dots on 5d markiii - Help, please...


@EuAcelasi wrote:
They appear on every photo. It was clean for a period and then suddenly something happened...

If they appear in every image, no matter which lens, then you could have a sensor issue.  Sensor dirt tends to be way out of focus, so it shows up as translucent smudges.  Hot pixels tend to show up as distinct pinpoints, though. If it is identical in every image, then I would rule out a bad memory card. 

 

Contact Canon Support.

----------------------------------------------------------------------------------------------------------------------------------------------------------

"I don't rent software. I use Photoshop CS6, ACR 9.8 and Lightroom 6.8 ."
Reputable Contributor
Posts: 754
Registered: ‎11-14-2012

Re: Red Dots on 5d markiii - Help, please...

Seems like burned sensor due to laser.

powered by Lithium

LIKE US on Facebook FOLLOW US on Twitter WATCH US on YouTube CONNECT WITH US on Linkedin WATCH US on Vimeo FOLLOW US on Instagram SHOP CANON at the Canon Online Store
© Canon U.S.A., Inc.   |    Terms of Use   |    Privacy Statement