I have often wondered about the lenses and how some can take such fantastic photos. The only problem for me is that for the amount of photos I am interested in and the time I have to take photos makes me prioritize my budget differently. Without spending mega funds I limit my cam budget to a certain area. Yes, I would love to have a high-end lens, but just for average "Joe" photography? After all, I want to spend as much time flying as possible and less time with the camera although I do enjoy getting a few shots when on vacation and that occassional moment that you don't want to miss.
I have an Alpha a300, DL 18-250, DL 18-70 (kit lens), and 70-300 (kit lens). I really enjoy the digital camera since I come from 35mm film! I have messed around with my camera settings many times and my best shots have always been when "all the stars align" for lack of a better term

I have found that more than often it is all about the individual behind the camera. Some times the accidentally good "shot" happens. So many factors to include and angle and light is major as far as I can tell.
Once you really learn how to use light to your advantage and see the finished shot in your mind's eye and are truly familiar with your camera it makes all the difference. That is why someone can take a shot with a cheap point-and-shoot digital and come out with an unbelievable photo.
I know a gentleman with a mid-range point-and-shoot and his photos are simply fantastic for the equipment he has. I bet his entire gear is less than $500.00. I have watched him shoot a number of times and I notice how he gets into a certain position according to the sunlight and angle. It amazes me, but yet I know this is a major piece of the puzzle. And just think, he does not have all those "extra" camera settings to adjust for shooting.
I am oft astounded how a professional can come out and set up a photo shoot with all the high-dollar lenses and equipment and yet this fellow with his mid-range point-and-shoot can get some photos better in many cases! I admit he won't be able to zoom out and catch the eye of an eagle at 500 yards but for what he has it is incredible. Sort of blows spending tons on big buck lenses if you don't really have the need
If I were a professinal photographer I would buy the best I could afford as that would be my livelyhood, but for a weekend warrior I have to balance planes against camera lenses and right now planes are winning!