Canon 5D Mark 4. Part of a photo has different color.

[avcheprakov]

Canon 5D Mark 4. EF24-70mm f/2.8L USM

Three photos below have:

ISO 800, f/11

Shutter speeds 1/200s, 1/320s, 1/500s

After 5 years of owning my Canon 5D Mark 4, which has never behaved strangely, yesterday suddenly a strange thing happened - some photos began to look incorrect - as if part of a photograph with a changed color. What could it be?

[rs-eos]

Fault with the sensor perhaps? Most rows only returning green data (no red or blue)?

Maybe try a different SD and/or CF card to see if that makes any difference.

Also try resetting the camera in case there's some feature that is causing this (dual pixel RAW? corrections such as peripheral illumination?)

[avcheprakov]

Hi Ricky.

Thanks for the quick answer. I'll try to reset. But these issues happen not too often, so it is hard to replicate it. I'd say - chance to replicate it is 1 by 30.

Some has magenta hue:

Some has neutral, but different in brightness:

[Waddizzle]

Sounds like a bad memory card or a bad image sensor.  

Changing your memory card to a new one is easy to do.  Be sure to format the card prior to first use.

[avcheprakov]

Hi Waddizzle. That's interesting. I'll try it for sure. Thanks!

---

Alexey Cheprakov

[5DIV · Accepted solution]

How are you downloading your images? If using a card reader, try a different card reader and a new cable.  A bad card reader or cable can corrupt images.

[avcheprakov]

Hi 5DIV!

You're right. As soon as I re-inserted the card into the reader, the problem disappeared. Brilliant! Thank you very much!

Cordially,

Alexey Cheprakov

[5DIV]

Good to hear that you figured it out.