This is my first post, and hopefully someone can give me some much needed guidance.
I have a new 20-D with a 70-200mm f/2.8L USM lens, as well as a 300mm f/2.8l IS USM lens ... with which i will be shooting skiing this winter. But prior to that, i've been drafted to do some high school sports, which has been fun ... except the night football.
The first game i shot in auto, as i couldn't remember how to manually operate it under pressure! The second game i was in manual, except it seemed to act like shutter priority, and everytime i adjusted shutter speed, the apperture would automatically adjust itself. So early this week, after a little tweaking, i found that if i wasn't in the 2nd 'on' position, i couldn't fully operate the camera manually, and that's why it acted as if it were in apperture priority.
Once i realized my mistake i was jubilant, and spent much time practicing being in manual today (not an unfamiliar concept, just getting used to HOW on this camera) ... however, after playing around with the camera today for hours, that when i adjust the shutter speed to anything above 1/125 at low light inside the house, i can't seem to adjust the apperture up to the half-way mark. It wont go. Now i think i'm still going to have the same problem this friday night for my 3rd shoot.
I also tried both Tv and Av modes with some exposure compensation, thinking i could trick the camera, but got no appreciable difference in brightness to my images. My co-worker says i should be able to shoot at shutter speeds of 1/400 ... and yet i can't seem to get up above about 1/125, even with an f/2.8 lens, even with my ISO pushed all the way to 3200 (i just don't get it!) ... So, because he can't help me as he shoots with another brand, i looked up some forum sites and found this one - perfect - now all i need are some helpful opinions about my predicament, and what my camera should be able to do in the night football situation ... heaven knows with all that nice technology, i can't blame my equipment anymore. And my images get posted to a local website for purchase by the kids who play the sports, so i'm very concerned to get this right a.s.a.p.
I await some helpful advice ... thanks!



