I will be taking some shots of a field hockey game. I am very much a nightlife/protrait photographer but have had had some play with ai servo before wehn generally walking around. It is an unpaid job for my cousins local club (who do not have a photographer/had a photographer before anyway...its a small thing).
I have a 5Diii and a 70-200 f2.8 ii at my disposal (also the 17-40mm f4...assuming thats worthless here) and a 50mm f1.8. I managed t grab a second hand 1.4x iii off a friend at a very reasonable price as well.
I am quite happy knowing ISO wont be much of a pain for me (being the 5Diii...2000 is only when noise beings to be noticeable).
The lens is a very nice lens of course...no problems there.
I guess I will have the thing in TV 1/800-1600 for stopping power.
My real questions are therefore:
1) AI servo pattern setting? Centre point in a cross type pattern? Lens settings?
2) I am guessing most at 100-200mm...so wide open or should I be looking at f5.6+?
3)Should I use the 1.4x? It loses a stop of course and there is a hardly noticeable drop in AF speed (supposedly), but the effective 100-280mm f4 is more tempting?
Thanks for any help. I have had a go at tracking and stopping before with passing cars and my of dog hunting squirrels (she will never get one...) and think I could get a few in this.
I noticed in around an f7 type lighting situation...the ai servo AF on even a cross center point found tracking my chocolate labradour pretty difficult...can I assume its because she is quite a low contrast thing in quite a dull environment?