How to: Fix Stuck or "Hot" Pixels on the F35

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Viddovation

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It may happen that your F35 has, or at some point develops, one or more hot/stuck pixels. These pixels may appear white, or a bright colored pixel. What follows here is the method for masking them in camera. Additionally, this process can be used to see how many pixels the camera is already masking, either by some automatic determination, or previously programmed manually.

This is called the Manual RPN Procedure. To execute it you need to access the "SERVICE" menu.

To get access to the Service menu, you need to instruct the camera to unlock all VF menus. The standard method to unlock the Top Menu and Diagnosis menu is not enough here.

With the camera on, and fully booted, click the VF Menu button to close the menu and display. With them close, you will push and hold all three assignable buttons (exclude the toggle #4). This will execute whatever those toggles are programmed to do, but ignore that. With the assign buttons still held down, press and also hold down the rotary encoder. With all of these buttons pressed and held down, tap the VF Menu button twice. This should bring you to the Top Menu with the SERVICE menu listed at the very bottom.

One of the Service menu pages will be for the RPN adjustment. Other Service menu pages include the hours meter and firmware update. Another page allows for inverting and mirroring viewfinder images.

The Service menu remains available until the camera is powered off.

I've attached a pdf to this post that thoroughly explains the RPN procedure.

But in short, you can manually mask R G and B components of each location on the sensor. Some hot pixels may only be one color performing incorrectly.

Also, it is crucial that you be attached to a true 1080p pixel-to-pixel monitor when making these adjustments.
 

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Great write up Viddovation.

I think its important to note though, that a lot of the time a dead/hot pixel can be remedied easily by a simple "black balance" using the switch on the side of the F35, and to repeat this until the issue goes away.
Ive only had a hot pixel once, and it took 4 or 5 "black balance" attempts to restore happiness :)
 
Interesting.

Important question though - do you think the black balance actually restores the pixel functionality, or just allows the camera to "automatically" hide the hot pixel? I'm thinking the net result of the two procedures may be precisely the same. But good to know black balance is an alternate fix.
 
The black balance does an automated version of the RPN. RPN should only be used as a last resort if multiple black balances do not fix the issue.

Each black balance searches for hot pixels in either red, green OR blue channels. So you need to do at least three to have a chance of zapping a pixel. Ideally with the camera up to temp.
 
JMtheDP said:
The black balance does an automated version of the RPN. RPN should only be used as a last resort if multiple black balances do not fix the issue.

Each black balance searches for hot pixels in either red, green OR blue channels. So you need to do at least three to have a chance of zapping a pixel. Ideally with the camera up to temp.
Click to expand...



I keep reading this info, but is this written somwhere in the manual? could it be that the latest fimrware update does it for the 3 channels? because if you read the LCD panel as the black balance is being done, you can read how it does it for each individual channel.
 
That's black balancing, not doing an RPN check. I did read it somewhere reliable, I cannot recall where but I'll try and find it.

This has historically always been the case with Sony cameras, it was the same for their three chip models and I guess they carried it on.
 
I know this is a necro-post, but I wanted to thank Viddovation for posting this helpful info. I was able to remove some stuck pixels on my F23 after the black balance wouldn't cut it.
 
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