topic Re: Red Dots on 5d markiii - Help, please... in EOS DSLR & Mirrorless Cameras

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

EuAcelasi — Thu, 04 Jul 2019 07:05:46 GMT

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

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

Waddizzle — Thu, 04 Jul 2019 07:22:44 GMT

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

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

EuAcelasi — Thu, 04 Jul 2019 09:23:37 GMT

They appear on every photo

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

EuAcelasi — Thu, 04 Jul 2019 09:26:29 GMT

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

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

Ray-uk — Thu, 04 Jul 2019 10:17:20 GMT

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.

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

Waddizzle — Thu, 04 Jul 2019 10:19:13 GMT

@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.

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

Peter — Thu, 04 Jul 2019 11:41:51 GMT

Seems like burned sensor due to laser.

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

Alishaikh80 — Mon, 20 Apr 2020 21:05:49 GMT

i am having the same issue with my Canon 5Drs

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

Peter — Tue, 21 Apr 2020 01:53:45 GMT

Looks like the Youtube video of the Sony burned by a tatoo remover laser.