Amp glow and the 6D.

Is this normal amount of amp glow?

Exif intact, but in short, Long Exp NR: Off, High ISO NR: Level 1, ISO 12800, 30 seconds in darkness.

This was after about shooting for an hour with the Live View on and off in the dark for various long exposure shots.

IMAGE LINK: http://www.flickr.com …s/garagenoise/9​121619787/

Many models exhibit this effect, some to lesser degrees than others. There is little that can be done for it, I have sent a couple of bodies to Canon for this, and they do the typical electrical "blah" and "tweaked wb" notes. You should only see this when you are shooting very dark subjects though, in about any pic where there is actual image content with detail/color, you should not really notice it too much.

On some cameras in fact, you don't need a 30s exposure, you can get it with a very fast shutter speed at high ISO values. I would say that is pretty minimal from what I have seen elsewhere.

Not being any native English speaker; what's "amp glow"?

It's the pink highlight you get on many models that originate at the bottom of the frame, and in many cases, concentrates at the lower right corner, especially at high ISOs. The pattern is always consistent, but just gets brighter at higher ISOs, and any given camera will have a different random pattern, and have the issue more or less noticeably than another copy.

This was the worst copy I have ever seen, and this camera actually went back to Canon for an exchange to a different 5D2, but provides a good example.

TeamSpeed wrote in post #16059794
Many models exhibit this effect, some to lesser degrees than others. There is little that can be done for it, I have sent a couple of bodies to Canon for this, and they do the typical electrical "blah" and "tweaked wb" notes. You should only see this when you are shooting very dark subjects though, in about any pic where there is actual image content with detail/color, you should not really notice it too much.

On some cameras in fact, you don't need a 30s exposure, you can get it with a very fast shutter speed at high ISO values. I would say that is pretty minimal from what I have seen elsewhere.

After I noticed this, I did a few shots with the lens cap on and the effect was more pronounced, which is totally understandable. I was shooting in near darkness except for the supermoon-light.

It was more (obviously) at ISO25600.

TeamSpeed wrote in post #16059818
It's the pink highlight you get on many models that originate at the bottom of the frame, and in many cases, concentrates at the lower right corner, especially at high ISOs. The pattern is always consistent, but just gets brighter at higher ISOs, and any given camera will have a different random pattern, and have the issue more or less noticeably than another copy.

This was the worst copy I have ever seen, and this camera actually went back to Canon for an exchange to a different 5D2, but provides a good example.

That does look pretty bad, what was the ISO/shutter speed on that?

I was a little alarmed because I have seen a few night-sky shots taken at high ISOs on the 6D that didn't exhibit this. Perhaps it was corrected by the dark frame subtraction + PP by the authors, or maybe it was just cold when they were shooting outside or who knows what.

Just wanted to see what's considered acceptable by today's standards, I'm not losing sleep over it.

Thanks!

powerslave wrote in post #16059758
This was after about shooting for an hour with the Live View on and off in the dark for various long exposure shots.

is this the cause of this phenomenon?

camera gets maybe a little too warmed up, then amp glow?

hes gone wrote in post #16060216
=he's gone;16060216]is this the cause of this phenomenon?

camera gets maybe a little too warmed up, then amp glow?

I would guess so. As TeamSpeed mentioned, this is natural for all cameras. Just to what extent varies depending on individual instances and operating conditions.


I would welcome anyone else to try out a few back to back long exposure tests on their cameras and share the results here!