[CaptainNH]

Welcome Marian,

The 20D was a great camera in its day and - provided the sensor and shutter are both still in good order - there's no reason why you shouldn't continue to get some excellent shots from one.

I still use my even older 10D for detail shots when I do weddings - fantastic at producing sharp images when paired with a good sharp prime.

The 20D isn't the camera to use if you're looking for big poster prints, but for regular sized prints, it would serve your purpose more than adequately.

If you're looking for a great cheap lens, you should look no further than the EF 50mm f/1.8 II - you'll be able to get some very pleasing images with that combination.