This is for the loyal blogger Cindy :) who asked about how I take my jumping shots....so here is what I do. I'm no expert, but here it is....And please note that I'm really no good with words. I so wish I could just tell you in person, I could probably do a better job at explaining it....
First things first.... Practice. I think that's the best way to get it right. I have my kids jumping off of stuff all the time so I can practice. It's a little harder to get things in motion to not be blurry (especially if you are not trying to get that effect). So practice many times. I still get blurry shots here and there, so the key is to take more than one shot. Something that looks clear in your viewfinder may not be clear when you upload it to your computer. (Make sure to zoom in to see the details when you check to make sure on your camera).
I shoot all of my pics on Manual mode. I think it is the best way to get the image just right as far as lighting, shutter speed, and depth of field. You have total control. When I take action shots (like jumping) I like to have my shutter speed at least around 350. I also use spot metering and I focus my AF point (the little red blinking light) right on the person's eyes. I tuck my arms in tight against my sides, or rest my elbows securely on something so I am as still as possible. When I take the pic, I usually try to pan and go with the motion of the person. Does that make sense? You can also get them at the highest point and take one shot, and usually you can get a nice, sharp pic. This is of course if you want the jumping to look like it is frozen in motion. If you want the blurring effect, you will need to slow down your shutter speed.
If you don't shoot on Manual or are quite not ready to take that plunge, I would say to set your camera to Shutter Priority mode or (Tv mode) on your camera. This will allow you to adjust your shutter speed (remember you want to keep your shutter speed pretty high so you can get that freezing motion). The camera will set your aperture/exposure for you so all you have to essentially worry about is your shutter speed.
You'll want to practice in a well-lit area for sure...That will make it a lot easier, too. I hope this somewhat answers your question. There really isn't too much to it if you are just looking to get a nice crisp clear picture. There's so much to learn about photography isn't there? I love photography. My love for it continues to grow everyday. Let me know if this works out for you...And if you work it out, send me a pic, and I'll post it here on the blog for everyone to check out! If anyone has any jumping shots that they've taken, let us know how you do it!