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

Marco Nero wrote:

bclaff wrote:

Marco Nero wrote:
...
*DEAD PIXELS:

*STUCK PIXELS:
*HOT PIXELS:

I have literally tested hundreds of sensors for defect pixels and I can tell you from experience that dead and stuck pixels are very very rare.

Except for long exposure times I would expect zero defect pixels in a camera like the Canon EOS Ra; and this is what I found in the case of Franz's camera.

For a long exposure, like 30 seconds; I found there were pixels that were "hot" probably due to faster dark current build-up in those pixels.

I would say that 9 out of 10 digital cameras that I have owned in 20 years have developed a stuck pixel (usually white or blue) several years after purchase. Usually it's one or sometimes two per sensor. And that's after tens of thousands of pictures, if not hundreds of thousands. I've never had a dead pixel on a camera before but I've had a white pixel that refused to ever budge. Usually this occurred after several years use. Canon says this is to be expected and is perfectly normal.
.
As for "Hot Pixels"... the last 3 DSLRs I've used and the last 4 Mirrorless cameras (including the R6, Ra, M6 and EOS M) have all shown between 10 to 80 hot pixels, even when the camera is brand new. They only show up with longer exposures taken at higher ISO settings. They disappear with 'normal' exposures. Doing an Automatic Sensor Clean has usually made these disappear, at least until I do another astro session.

I'm not convince that you have objectively distinguished between a stuck pixel and a hot pixel.

I contend that the pixels you perceive as stuck are actually hot.
This is based on raw data values from many cameras with (and without) defect pixels.

If you currently have a camera that you feel has stuck pixels I'd be happy to test this hypothesis. Send me a PM.

I also suspect that your hot pixels that show up at long exposures will do so regardless of ISO setting and that exposure time and not ISO setting is the contributing factor.