Some technical advice:
- make sure to sit with the sun behind you at some angle. Tennis game is not a portrait session where you use creative backlighting. The scene must be properly lit so that you can use short exposure times. Never sit against the sun.
- try to sit at at the corner of the court and focus on the player near you. If it's not your fave then wait for serve change so that she/he comes to you.
- on night session set ISO as high as your camera allows without dramatic loss of quality. On FX cameras it's usually 6400, on DX it's 3200. During sunny day set it on ISO 400. Anyway, set it so that you can use aperture smaller than f/2.8 and exposure faster than 1/128 sec. On f/2.8 or larger it's too easy miss focus.
So to put it together
- Night or cloudy day
: because the lighting condition don't change through the game set mode to M (manual mode), time to 1/128, aperture to f/3.3 (or the lowest your lens allows) and make light measurement of the court with players. See what ISO is necessary for correct light. If ISO has to be higher than 6400 then drop the aperture. If your lens doesn't allow it then make aperture as large as possible and drop time to 1/60 sec, but make sure to shoot only stationary situations and put your lens against some solid object, like your knees or back of the chair in front.
- Sunny day
: lighting condition change quite often so set mode to S (speed priority), exposure time to 1/256 sec and ISO to 400 or 800. Sun must be behind you.
Set focus mode on C (continuous servo), and set focus point a bit on the side so that when you set it on the player he/she is facing into the picture, not the edge of frame.
All the above applies only to situation when you actually have some knowledge of aperture, light, ISO and camera controls.
If you are a complete beginner
then set the camera mode on green and don't worry about anything. Playing with the controls when you don't know what you are doing will screw up all the pictures. And remember to put the the sun behind you!
If you already have some basic experience
set it on Action Mode and don't worry either.
If you are somewhat experienced
with camera controls then use the advice above.
If you are very experienced
then you don't need any advice, but then we will all appreciate your input
Did I miss something?