Isn't it great to be able to get a reply from someone like RB who's actually done this?
I haven't video'd any games, but I'll throw my 2-cents worth in:
1. Do I use the same lens for Basketball as for Football. I will be closer to the action in Basketball as I will be filming from the stands and the court is shorter. Wide angle, I could capture more of the action with less panning but would it be appropriate? Football, I will be in the stands or booth but never on the sidelines. Filter? I remember on another thread that it was recommended to use a filter to protect the camera lens. Which filter should I use for this camera.
I would think you might want to look into getting a camera with more optical telephoto power than the VX2100s 12x. Also, although I'm a huge fan of the VX2100 (and own two of them), I don't know that this fits into your stated budget, and whether its the best thing for your usage. It probably will work great, if it leaves room in the budget for a good tripod, etc. but there are other options also, like the Canon GL2, that is cheaper and has more telephoto power. You can get a wide angle and a 2x telephoto adapter for the VX2100 - some of them are pretty cheap on ebay (check out other web ratings for the particular model, etc. as well as ebays seller ratings). I don't think you'll need any filters. Watch out for glare from stadium lights, etc.
2. I figure that an external mike won't be necessary as I will use the roar of the crowd and announcers for background. But - on windy nights at football games, can I mute the mike or put a cloth over it? Or what are some of the options for this.
Get a fur muff for your shotgun mic and don't count on getting clean audio of the announcers unless you use a digital recorder and specifically mic them. You'll find good products, service and prices on fur muffs at:
http://www.thewindcutter.com/
3. I plan to use two tapes for each game as the flags and penalties are sometimes as interesting as the action. Sometimes a AC outlet may be available so should I also purchase an additional AC Adapter?
Nah, get a 970 type battery (check ebay) - they'll last longer than any two or three games!
4. Tripod and/or monopod - Football games won't be too bad with using a tripod but Basketball games will probably require a monopod as generally the bleachers are rather crowded and I will want as high as I can get. What is the most inexpensive yet functional units for this purpose using the VX2100. Portability is a concern. As is a good carrying case for the camera and accessories.
It's going to be tough getting steady video from the bleachers. Especially when zooming, you're going to need a real steady mount. Look for a "true-fluid" head and sturdy legs for your tripod. Don't fall for the "lighter is better" line!
5. Would it be possible to use a cheaper camera to upload the tapes to the computer or to a DVD recorder. Once the tape is recorded with the VX2100, would I lose quality by uploading with a cheaper camera to reduce the load on the Sony. I will retain tapes at least until I get them into the computer. I probably won't be able to upload to a computer and start editing until March or April but I will be putting on DVD for my grandson to review. ( I am heavily into the AARP Tax-Aide program and will be super busy until mid April.)
I've had "issues" when using a different model/brand camcorder to capture video. Because of this, I now always use the cam that did the shooting. Do buy a cheaper camcorder though and use it to shoot the action wide, sitting static on a tripod. You'll use this video for 'b-roll' type cuts.
Enjoy!