I've shot model airplane pix with both types of cameras. I own two Ultra zooms; a Canon S3 and a Sony H5; as well as a 13 megapixel Sony A350 DLSR. No question that the DSLR take sharper, clearer pictures. The number of megapixels helps, but the much larger sensor on ANY DSLR, compared to an Ultra Zoom comes into play, also.

I agree with the poster above. Fast moving planes in the air require long, sometimes expensive, lenses to capture a really good shot.

Even with my 18-250 zoom on the DSLR, I still have to crop to get the close-up detail that I need. That is where the higher megapixel/larger sensor cameras come into play. More megapixels; larger sensor; more ability to crop tight.

When you then start taking shots of planes positioned much closer on the ground, you will often find a long lens, that was perfect for shooting in-the-air...not helpful at all.

I switched around between a 22-50 ( for close in ground shots) and my 75-300 tele (good for air shots) for a while. I then caved in and bought a $550.00 18-250 zoom. For me, it is the best of all worlds. I can shoot long and short shots without changing a single lens.

Some will tell you that such long zoom lenses do not produce as high quality pix as do single focal length...so called- prime -...lenses. That may well be correct, but the quality is perfect for my uses...and certainly perfect for posting any pix on the web. regards, Rich

A quick pass shot with the Sony A350 18-250.