Blue Pixel in random frames on Scarlet

[Dustin Dooley]

It was not on the output just in the r3d files. I did two things and it went away and I don't know which one was the one that fixed it. I changed compression settings and then changed resolution. When I went back to testing the blue pixel was gone and I haven't seen it since. It still makes me a little uneasy that I didn't find the actual issue but it's been awhile now and no issues knock on wood.

 

[Dustin Dooley]

The lower compression under tungsten caused a lot of blue noise in the shadows and that's when I noticed the one pixel that wasn't just noise. I could recreate at will until I switched compression to 6/1 and then changed the res to 5K. After going back to the original scenario I couldn't recreate the issue. I've had my eye in the shadows ever since just to make sure it doesn't pop up as an issue again.

 

[Noel R.]

I had the same exact issue happen to my Scarlet. Dead pixel in the same location on different shoots shot weeks appart. It became more apparent when downresed to 1080. Inspected and dusted off the sensor. I tried blackshading and it seemed to work temporarily then came back on another shoot a couple weeks later. I was also running a different firmware version on the next shoot and blackshaded that morning. It happened on all my SSD's finally sent my camera in, now waiting. Considering the pixel is in the same exact place, if I had to guess I would say the sensor is bad. I'll find out when they send my camera back.

 

[Elliott Balsley]

Look and sound like cosmic ray zaps to me. Just one of those things.

I always assumed this post was a joke, but I've just read some new information and I think there is a very good chance this was the cause of my problem back then. It was a rental camera, so I'll never know for sure, but I believe cosmic rays was the culprit. Maybe the camera had recently flown.

From Sony's F65 manual:
Image sensor phenomena
The following phenomena that may appear in images are specific to image sensors. They do not indicate malfunctions.
White flecks
Although the image sensors are produced with high- precision technologies, fine white flecks may be generated on the screen in rare cases, caused by cosmic rays.
This is related to the principle of image sensors and is not a malfunction.
The white flecks especially tend to be seen when operating at a high environmental temperature