Thanks Steve. I'll have to dig out the manual and see if that is something I can mess around with. I wonder what the effect of disabling that function will be on the noise. Have to try. Aram From: Steve Lang Sent: Friday, July 31, 2009 12:38 PM To: leicareflex@xxxxxxxxxxxxx Subject: [LRflex] Re: Thunderstorm last night Hi Aram, I really like this one! The exposure is perfect, great detail in the clouds. I wonder if the XTi is doing long exposure noise reduction, and that's it's taking so long in between shots. If so, you might be able to turn that off in the custom functions? Steve On Fri, Jul 31, 2009 at 12:31 PM, Aram Langhans <leica_r8@xxxxxxxxxxx> wrote: We had a small thunderstorm roll through at dusk yesterday. I have never seen lightning at this time of the day, where there was still some color in the sky and clouds, so I thought I'd give it a try. I shot 50 frames and only caught lightning on two of them. Had the camera (Rebel XTi) set on sequential exposure, and the shutter at 5 or 8 seconds, and the cable release clicked on so I did not have to stand there. It would fire one shot, then write it to disk then fire the next shot. Last time I did this was with my R8 and motor winder and it worked well. Problem with the digital Rebel is that after each 5 second exposure it took about 10 seconds to write the info to the card before it took the next shot. So, I missed about 66% of the time. And, every time I saw a great bolt, I looked over to the camera and it was still writing the previous exposure. Drats. Maybe a 50 D would write faster? I think it has something to do with the null exposure when using long shutter speeds. Maybe I could turn that off if I looked at the manual. did catch this one, however. http://gallery.leica-users.org/v/Aram/misc/-7.jpg.html comments and criticism welcome. Aram