Looking for opinions on a good lens for shooting basketball indoors in your typical High School gymnasium lighting levels. My daughter is entering middle school this year and is a decent basketball player, and she seems dedicated to continuing to improve her game, so I want to be able to get some good shots for her has she progresses through the years.
My first gut instinct would be something in the 85mm range...which I already have a Vivitar (samyang) 85mm f/1.4. However...I'm not that confident in my ability to manually focus on a fast moving game such as basketball....I have a hard enough time on still life
So I guess I'm looking for something with Autofocus.
I was thinking something like the 50-135, or a Sigma 50-150mm HSM would be ideal zooms as far as focal length...but I'm wondering if f/2.8 is even fast enough to stop action inside a gym? Camera is a K-5 so I can crank the ISO if need be...but even still I'm wondering if that will be enough? Would I be better off with a prime lens? I could always splurge for the Sigma 85, or an FA77 but I'm wondering if that's even necessary...for most other things when I need an 85-ish lens the Vivitar is great. I'm just not real quick focusing with it. I would think that the fast 50's would be a little short since I might not always get a good position to shoot from.
I haven't had the opportunity to try shooting this game yet....I've been a coach the past 3 years when she was playing youth ball...so I never had the opportunity to take pictures so any thoughts/opinions/experiences shared would be appreciated! TIA