Quote:
Originally Posted by astroron
Thanks, Andrew and Clem, I understood it was Amp Glow, but didn't know what caused it 
Another question  Do all DSLR's get this problem
I don't see other peoples photo's with the glow 
Cheers |
There are ways we can deal with amp glow and some cameras handle it better or differently than others.
I did a quick search on your camera model Ron, there should be an option in the menu somewhere that you can set
Long exp. NR to ON.
This will work for exposures longer than 1 second.
In your case, say a 2 minute exposure, the camera will finish the exposure then take another exposure of exactly 2 minutes to match but this time the sensor will not be exposed. Instead it will only take a "photo" of the noise and amp glow that is generated, it's like taking a dark frame.
This will then be subtracted from the original 2 minute exposure and it should eliminate most of the problem.
The only downside with In Camera Noise Reduction is that the length of a single exposure is doubled, so in your case, a 2 minute exp will take 4 minutes before the camera will allow you to expose again.
Hope this helps a little and my apologies to Clem for diverting off the topic a bit.
