I've just been setting up my EM1 during which time the light dropped in my lounge and when I looked at the LCD I saw a bright red pixel. Checked the viewfinder and it was there too. Dead/stuck pixel sprung to mind, although I'd expect those to be either black or white. So next thought was a hot pixel, but then I thought these were only caused by long exposure and due to the sensor heating up. I turned the lounge light on to investigate the issue further and low and behold the red pixel went. Turned the light back off and the red pixel re-appeared so it appears that it's a low light phenomenon, which I find very odd. I tried it with the lens cap on and the pixel's there clear as day.
I loaded the image into LR and when it first loaded and still showing the embedded jpeg the red pixel was there, as soon as the RAW processing finalised after a second the red pixel went. I then read on the t'interweb that LR automatically corrects for hot pixels so I tried again using jpeg and not loading into LR and the red pixel (actually there's 2) can still be seen, as shown below (full image and 100% crop). EXIF ISO 1600 f2.8 1/6s
As you can see with the light turned on there's no red pixels
So why am I get hot pixels in dark light?
I've only had the camera 1 week so do I return it, do I do a pixel map and hope it fixes it, or is it normal and I should ignore it? My only issue with sending it back is that the shop I bought it from have no other silver EM1's left and say they're unlikely to get any others so I'd have to get my money back and look to buy elsewhere, but there's only one shop left with them at the same price (and they have limited stock), everywhere else is more expensive. However, I don't want a duff camera so would rather send it back if it's faulty. I don't recall this issue with my EM5-II.
Edit: Actually one of the red pixels is still there on the lighter image, so I guess it's a case of whether I send it back or do a pixel map? Whilst I know it's not great having this issue, especially on a new camera, I guess Olympus put the pixel mapping there for a reason, and do I just use it and forget about it? Obviously if the pixel map doesn't sort it it will have to go back regardless