It "depends" on a number of factors. Is the subject static and very easy to focus and compose on? Is the subject or photo I envision an EASY one to make look good, or is it a subject that demands CRITICAL or PRECISE focus, depth of field, lighting,etc,etc? SOme subjects are one-shot deals...like a high-jumper clearing the bar...there is one best time, and even at 8 fps, there's not another equally good shot to be had. The key is to shoot enough shots to actually do what we call "work the subject". Work it, then move along. On some subjects, like let's say natural landscapes (not urban landscapes), small changes in the lighting can make a huge difference. ON natural world close-up type shots,let's just say, for a real example, spider webs in September on a breezy day, or tall irises in May or June, one of the biggest factors besides lighting is wind making the subjects move around too much to be captured at smaller apertures. Often on subjects like that, there are a lot of rejected files that might look "good" on the LCD, but which when blown up are not quite what you'd wanted to get.