is it normal to have this much dead pixel on the brand new canon ra?

is highlight tone priority nr destroy my dark part of image, or totally destroy sensor?...btw my Eos r is brand new a couple of week

bclaff wrote:

Light Pilgrim wrote:

I had 50-60 dead/stuck/hot pixels on a brand new R5. Several on lcd. Service mapped sensor pixels and I am still fighting for them to replace lcd.

The only cameras I have seen with that many defect pixels were on the International Space Station (ISS) where they are subject to a lot of cosmic radiation; so I don't believe your 50-60 count.
If your R5 is still showing a significant number of defects then we should do my test to get an objective measurement.

As for the LCD that is an entirely different matter.

I had well over 1,200 stuck pixels and hot pixels after my first hour of shooting 25-second exposures with a brand new Canon EOS 6D.  A "manual sensor clean" resolved the majority of them when I returned home.  The sheer volume made it look like there was snow in the shots and I was quite shocked when I downloaded the images and saw them. So yes, it's plausible for someone to experience a high number of stuck/hot pixels in a new DSLR or mirrorless camera. 
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Cosmic Rays can affect an LCD but in an entirely different manner.  When one of these hyper-charged particles penetrates a microprocessor or transistor, it can cause the binary code to change by a single numeric digit, resulting in a change of value.  I believe this type of scenario was first recorded during an election when the voting machines produced false data without human intervention.  The resulting investigation ended up determining that it was Cosmic Rays affecting the binary code in the microprocessor... which is why no microprocessors are permitted to be manufactured near natural deposits of radioactive materials (eg Uranium deposits).  The Earth's magnetic fields protect us from most of the cosmic rays. Single Event Upsets (SEUs) are believed to be triggered when a cosmic ray particle penetrates a computer's microprocessor, causing any number of crashes or defects to occur.
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The NASA crew on the ISS tends to use Nikon DSLR cameras which are well shielded against cosmic radiation inside the ISS - mostly by the Earth's Magentic Fields.  Plus the orbit of the ISS is uniquely low (literally a low earth orbit).  These particles make it to the Earth's surface and can penetrate the crust by as far as 3.5km.  But NASA has a safety policy in place that ensures ISS crews and potential 180 day lunar flight crews meet the 95% safety "Confidence Level" with less than 3% risk (of death) during their spaceflight career.  Hence a passenger routinely flying at occasional international flight heights is likely to endure roughly the same amount of cosmic radiation on their camera sensors.  Resulting in similar numbers of affected pixels.

Marco Nero wrote:

bclaff wrote:

Light Pilgrim wrote:

I had 50-60 dead/stuck/hot pixels on a brand new R5. Several on lcd. Service mapped sensor pixels and I am still fighting for them to replace lcd.

The only cameras I have seen with that many defect pixels were on the International Space Station (ISS) where they are subject to a lot of cosmic radiation; so I don't believe your 50-60 count.
If your R5 is still showing a significant number of defects then we should do my test to get an objective measurement.

As for the LCD that is an entirely different matter.

I had well over 1,200 stuck pixels and hot pixels after my first hour of shooting 25-second exposures with a brand new Canon EOS 6D. A "manual sensor clean" resolved the majority of them when I returned home. The sheer volume made it look like there was snow in the shots and I was quite shocked when I downloaded the images and saw them. So yes, it's plausible for someone to experience a high number of stuck/hot pixels in a new DSLR or mirrorless camera.
.
Cosmic Rays can affect an LCD but in an entirely different manner. When one of these hyper-charged particles penetrates a microprocessor or transistor, it can cause the binary code to change by a single numeric digit, resulting in a change of value. I believe this type of scenario was first recorded during an election when the voting machines produced false data without human intervention. The resulting investigation ended up determining that it was Cosmic Rays affecting the binary code in the microprocessor... which is why no microprocessors are permitted to be manufactured near natural deposits of radioactive materials (eg Uranium deposits). The Earth's magnetic fields protect us from most of the cosmic rays. Single Event Upsets (SEUs) are believed to be triggered when a cosmic ray particle penetrates a computer's microprocessor, causing any number of crashes or defects to occur.
.
The NASA crew on the ISS tends to use Nikon DSLR cameras which are well shielded against cosmic radiation inside the ISS - mostly by the Earth's Magentic Fields. Plus the orbit of the ISS is uniquely low (literally a low earth orbit). These particles make it to the Earth's surface and can penetrate the crust by as far as 3.5km. But NASA has a safety policy in place that ensures ISS crews and potential 180 day lunar flight crews meet the 95% safety "Confidence Level" with less than 3% risk (of death) during their spaceflight career. Hence a passenger routinely flying at occasional international flight heights is likely to endure roughly the same amount of cosmic radiation on their camera sensors. Resulting in similar numbers of affected pixels.

Soft error. Back in the day computer books called it a soft fail ?

https://en.wikipedia.org/wiki/Soft_error

I have stuck pixel on but in the next image they are at the other position, but when I open raw file on light room is a snowing od white pixels on iso 40000...is that a gain from iso and long exposition or destroy sensor?