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Red fuz on side of long exposure images

long exposure night red fuz nikon d810

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3 replies to this topic

#1
icey2881

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Hello, recently I have been trying to photograph star trails at night with my nikon D810. I thought I had everything right, tripod, remote shutter etc. But I kept getting this weird red fuz on the left side of my image. I then tried using my nikon d7100, and there was no red fuz. I was wondering if my nikon d810 has some sort of technical issue that needs to be repaired or it is some setting.

 

Attached is one of the images with the issue.

 

Thanks!

 

-Jonathan

Red Light Camera.jpg



#2
Ron

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It looks like you picked some stray light from a source just outside the lens coverage area (street light, etc.). I can only guess as to why the other camera didn't also pick this up. Perhaps the light wasn't as strong or perhaps you used a lens shade when you were photographing with the other camera.

 

Also, it's possible that this is a sensor artifact produced from heat generated by a long exposure time.

 

Perhaps one of our night photographers can give you a better answer.

 

--Ron



#3
Merco_61

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Have you tried using long exposure noise reduction on the D810? This will double the time every exposure takes as it records a second frame with only the heating artifacts and subtracts them from the photo. 

 

If it is stray light, the larger image circle used with the FX sensor might explain the phenomenon not being present with the d7100.



#4
ScottinPollock

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Also... if you can rotate the camera 180° and take the same shot, if the fuzz moves it's light. If not, sensor.





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