I have to photograph a dance school concert this week-end. I did it last year but I'm hoping for better photos this year. Last year I used a setting of 1/250 Av, autoand the 430ex flash on auto. I use a 28-135 f3.5-5.6 IS USM on a D50. I find I use the whole 28-135mm range so it is a good fit. I used the auto setting because I could not predict the lighting conditions at the time I took the shot. Also because it is the action I want to capture I use the high speed continuous shooting mode and center focus.
Last year these settings gave reasonable shots but most were f3.5 to f5 and the auto setting giving an of 400 on most photos with a few at 1000 and one at 1600. I am thinking if I fix the and increase the to 800 I may get f7 or better. The shots I took were in focus but slightly soft. The action was captured reasonably.
Can anybody give me an idea if I should use this setting (800) or keep the auto setting? Any other tips are most welcome. I have attached a couple of photos for reference.