Hi everyone,
Before we get started, yes I do know about the manual sensor clean fix for mapping out hot pixels, and firmware is up to date.
I bought my brand new Canon EOS 6D last week and have been experimenting with some long exposure night photography and learning my way around the camera (this is my first dslr). I read tonnes of reviews about the excellent low noise performance of the 6D, and after seeing some photos taken by other users, and by the renown Mike Salway, I decided to grab one for myself.
After the second night out testing different exposure times and ISO settings, I noticed a bright white pixel in live view. I did the manual sensor clean trick, and this seemed to mask the problem.
A couple of nights later when I finally got a clear night, I was out again playing around with the 6D, and I noticed another bright pixel in a different spot (it's still there now). After seeing this I thought I'd take a closer look at what was going on. I took a few more photos and headed in to my pc to take a look. When I viewed the photos full screen, I noticed a bunch of hot pixels.
The next night I took some more images, and the hot pixels remained in the same spots. Since I'd already done one manual sensor clean/remap, I was bit hesitant at doing it a second time, especially after people have claimed they've never had a hot pixel on their 6D.
So, I decided to do some tests. Camera settings for the test matched those of the previous nights (no long exposure noise reduction, raw images, high ISO speed NR standard). Tests were carried out at an ambient temperature of approx. 28°C, fitted with a Canon 24-105mm lens, with lens cap and lens bag covering lens, and viewfinder covered to prevent stray light leakage. The camera had been off for 24 hours before the tests began, so the sensor was definitely not hot, and by the end of the tests, no heat could be felt thought the camera body.
I've shared the link below to my Google Drive, containing all 27 raw test images taken. I'm hoping some others with a 6D can share their experiences and perhaps carry out the same tests under similar conditions to get an idea for myself and others who may have bought, or be looking at buying a 6D, an idea of what sort of sensor quality/number of hot pixels is normal for this camera.
https://drive.google.com/folderview?...1U&usp=sharing
10 seconds - ISO 100 - IMG0293.CR2
10 seconds - ISO 200 - IMG0294.CR2
10 seconds - ISO 400 - IMG0295.CR2
10 seconds - ISO 800 - IMG0296.CR2
10 seconds - ISO 1600 - IMG0297.CR2
10 seconds - ISO 3200 - IMG0298.CR2
10 seconds - ISO 6400 - IMG0299.CR2
10 seconds - ISO 12800 - IMG0300.CR2
10 seconds - ISO 25600 - IMG0301.CR2
-------------------------------------------------------
20 seconds - ISO 100 - IMG0302.CR2
20 seconds - ISO 200 - IMG0303.CR2
20 seconds - ISO 400 - IMG0304.CR2
20 seconds - ISO 800 - IMG0305.CR2
20 seconds - ISO 1600 - IMG0306.CR2
20 seconds - ISO 3200 - IMG0307.CR2
20 seconds - ISO 6400 - IMG0308.CR2
20 seconds - ISO 12800 - IMG0309.CR2
20 seconds - ISO 25600 - IMG0310.CR2
-------------------------------------------------------
30 seconds - ISO 100 - IMG0312.CR2
30 seconds - ISO 200 - IMG0313.CR2
30 seconds - ISO 400 - IMG0314.CR2
30 seconds - ISO 800 - IMG0315.CR2
30 seconds - ISO 1600 - IMG0316.CR2
30 seconds - ISO 3200 - IMG0317.CR2
30 seconds - ISO 6400 - IMG0318.CR2
30 seconds - ISO 12800 - IMG0319.CR2
30 seconds - ISO 25600 - IMG0320.CR2
