Originally posted by marubex thank you,
Is 2.8 enough? I´ve heard people saying a minimun of 1.8?
There are trade-offs to going for faster and faster glass. If you shoot at 1.8, you will wind up with only part of what you are shooting in focus. Sometimes that is what you want. But not always. 2.8 is usually pretty good for most situations.
You are getting a k-r, it should perform well in the less than ideal lighting conditions. Use shutter priority and play with the iso setting prior to the performance to see what you can get away with. I used to shoot indoor with at least 800 iso and often higher. My camera was the k2000 which led to images with noise and had to be cleaned up using software in the computer. With the k-r you should be able to get better images even with higher iso. I have shot dance recitals for my daughter. What I used to do was shoot pictures of the performers that went before her to find out what settings worked best so that by the time she came on I did not need to fiddle with the settings so much.
If you are 'starting out' in the full sense of the word, take some tutorials at your local community college or from a photographer and learn the basics of manual settings and then take pictures as often as you can and you will be all set. Go to the library and simply browse through photo books and you will get plenty of ideas about composition. These things are more important. The camera and the lens are only tools, its more important to learn how to use them effectively.