topic Re: Horizontal Lines show up in Long Expo in EOS DSLR & Mirrorless Cameras

EOS 5D Mark IV Horizontal Lines show up in Long Expo

warwarstudios — Tue, 02 Jan 2024 14:11:07 GMT

So i went out to shoot long exposures with my 5D mk 4 and came across a pretty annoying issue with 80 percent of my pictures from my trip. These lines keep showing up on all my long expo pics. This picture is ISO at 200, for 41 seconds and shot in RAW. Is my shutter getting stuck? I have a Mk 3 and the Eos R as well, but its my Mk4 giving me the issues. Please help! 🙂

Re: Horizontal Lines show up in Long Expo

Peter — Mon, 01 Jan 2024 15:32:03 GMT

Download ART (AnotherRawtherapee) and activate Dynamic row noise. Better?

Re: Horizontal Lines show up in Long Expo

warwarstudios — Mon, 01 Jan 2024 17:30:34 GMT

Thanks for the reply Pete, and although I can probably fix it as how you said, I want to try to get to the root of the problem so it can stop happening. I think its probably a shutter problem but was hoping to see who would know more about the line and why.This Picture has 2 lines clearly visible, and one very faint line above them...Truly annoying issue to have -_-

Re: Horizontal Lines show up in Long Expo

Waddizzle — Mon, 01 Jan 2024 17:34:18 GMT

The problem looks light flicker, to me. Turn off the lighting, and try it again.

Re: Horizontal Lines show up in Long Expo

Peter — Mon, 01 Jan 2024 17:41:04 GMT

Would you say that it looks like these pictures?

https://www.dpreview.com/forums/thread/4187907

Can you share some raw files?

Re: Horizontal Lines show up in Long Expo

warwarstudios — Mon, 01 Jan 2024 17:42:23 GMT

So turn off Flicker during long Expos? That hasnt been an issue before but I will try it tonight and see how it goes. I thought it was that maybe the shutter is slower or something?

Re: Horizontal Lines show up in Long Expo

Waddizzle — Mon, 01 Jan 2024 17:47:04 GMT

I said turn off some of the lighting, not change a camera setting. I’m not sure what effect enabling flicker detection would have on a 40 second exposure. Probably none.

Does this only happen during daylight, too?

Re: Horizontal Lines show up in Long Expo

Peter — Mon, 01 Jan 2024 20:10:31 GMT

"I thought it was that maybe the shutter is slower or something?"

Easy to see. Just inspect the hidden black fields to the left of your picture. The shutter will never be visible there.

Anyway, there are plenty of threads about your topic and that sensor generation here at this forum, if it is the same case https://community.usa.canon.com/t5/EOS-DSLR-Mirrorless-Cameras/Eos-R-Strange-vertical-banding-help/m-p/316635

Re: Horizontal Lines show up in Long Expo

Waddizzle — Mon, 01 Jan 2024 17:54:56 GMT

@warwarstudios wrote:
Thanks for the reply Pete, and although I can probably fix it as how you said, I want to try to get to the root of the problem so it can stop happening. I think its probably a shutter problem but was hoping to see who would know more about the line and why.This Picture has 2 lines clearly visible, and one very faint line above them...Truly annoying issue to have -_-

This almost looks like someone’s droning flying back and forth across the frame.

Re: Horizontal Lines show up in Long Expo

jaewoosong — Mon, 01 Jan 2024 19:50:24 GMT

The problem is not the shutter as the shutter is fully open during long exposures. Have you ever taken pictures where there was a laser light show? This looks like lidar/laser sensor damage.

Laser Light kills CMOS Sensor???!!! (youtube.com)

Re: Horizontal Lines show up in Long Expo

warwarstudios — Mon, 01 Jan 2024 22:39:18 GMT

I guess this is the closest match to what could have happened or what probably is broken but the odd thing is it doesnt show up in video, nor in normal photos. Just during long exposures and always on the same spot.

Re: Horizontal Lines show up in Long Expo

jaewoosong — Mon, 01 Jan 2024 23:14:36 GMT

Some stuck pixels only show up in long exposures. Due to compression in normal videos and jpgs, the stuck pixel will get "averaged" out by surrounding pixels. Take a long 30s exposure pic with raw with lens cap on and viewfinder blacked out. You'll see your sensor will have a some stuck pixels but doesn't show up in regular use.

Re: EOS 5D Mark IV Horizontal Lines show up in Long Expo

Camerabeginner — Mon, 13 May 2024 13:47:43 GMT

I have the exact same problem when doing night long exposure on my Canon 5DS. Any solutions or fixes?

Re: EOS 5D Mark IV Horizontal Lines show up in Long Expo

Peter — Mon, 13 May 2024 14:17:26 GMT

Any raw files?

Re: EOS 5D Mark IV Horizontal Lines show up in Long Expo

Waddizzle — Mon, 13 May 2024 20:42:56 GMT

@Camerabeginner wrote:
I have the exact same problem when doing night long exposure on my Canon 5DS. Any solutions or fixes?

Please start a new thread. It helps to put your issue at the top of the thread. It is easy to get mixed up when more than one person jumps in with similar or different issues.