January 26, 2017 at 12:31AM

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Red dots

Some of my footage has distracting, ugly red dots on it, especially footage taken in low light conditions, though they appear in light environments too. I take video on a Nikon DSLR. Does anyone have any answer for why this might happen, and how I might prevent it?

7 Comments

Have you tried a faster card? It might be data getting dropped during the write process.

January 26, 2017 at 7:00AM

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If they're the size of pixels and not moving, then they may be dead pixels. Unfortunately there isn't much you can do about it, unless I'm mistaken.

January 28, 2017 at 5:12PM

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A service center can correct the dead pixels. This is done by assigning the same value to the dead pixel as one of the others next to it.

They sometimes charge an unreasonable amount for doing this :(

Torben Greve

January 31, 2017 at 4:23AM

Do you have an image to share? 1-5 dots may be dead pixels, but more might be a card issue. If it's showing up often, it's most likely dead pixels. There's no getting rid of dead pixels, as that's a sensor issue. They will be more dominant in shadows/ high ISO images, so you can shoot at lower ISO's, or you can mask the pixels in post, and replace them with a neighboring pixel.

January 28, 2017 at 10:55PM

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Craig Douglas
Writer/ Director/ Editor/ Videographer
1746

Thanks for your comments, gentlemen. I actually cleaned the image sensor with the feature in the menu, and my oh-so troublesome dots vanished! I'm really happy it's only a small issue. Apparently from time to time the pixels require re-aligning; I wasn't aware of this. Just one of those things you find out as you progress, I guess.

January 29, 2017 at 5:21AM

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Ari
Student - Aspiring Director
124

Glad you figured it out! That's the best case scenario. It didn't even cross my mind, since most cameras do that automatically now.

Craig Douglas

January 29, 2017 at 9:50PM

It's probably a hot pixel and whenever you clean the sensor in camera it maps the sensor.
Long as you don't have dead pixels it should be good. I've own lot of Nikon cameras and it happens pretty often when you push the ISO and sometimes it gets fixed and when you change the ISO it reappears in different places.

February 1, 2017 at 3:23PM

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Keith Kim
Photographer
1183

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