I remember when I used to shoot film, the uncertainty of capturing a shot had to be balanced between taking another and then the cost of development. This, of course during the "film" stage of learning meant that if I got 1-2 shots that I really liked out of a roll of film, I felt myself lucky.
Now of course I shoot digital, and thanks to some PP the success rate is slightly higher. For example, at the zoo this past weekend I think I conservatively shot about 1200 frames, and then reduced this to 200 or so when I got home to make up a group of photos I liked. Then with further editing and PP further reduced this to about 40.
Mathematically, its a ratio of about 1:6 for photos I like, or that I would have kept in the days of film. And for the ones I further edited, and would post, it leaves me with a ratio of about 1:30 or about the same as I had with film.
So what is your ratio of success? Is there a number you consider that makes a shoot a great success? Is there a number you aim for? OR have you even noticed an improvement in number? Or do you get more selective over time and so the number stays about the same?