Hi all,

I didn't know where to post this, but I was trying out one of my Sigma SD10s which I removed the hot mirror from. I went out today to take some IR photos and this camera is great for that, it can even focus through the filter and all. Now the question is, should I take a meter reading before the filter or with the filter on? I did it without first and I was getting massive over exposure, then I put it about 3-5 stops down and the results looked OK on the camera screen as I could see detail and it looked like they would come out alright, but when I ran it through the software they were very underexposed and had lots of noise. So I had to resort to using 3rd party NR software (which being a purist, I hate doing) and resizing to hide introduced softness (ditto). I also had the WB mistakenly set at "Incandescent". Would this would have contributed to the added noise? Any help/suggestions appreciated.