which is most important to your photos

[c-bass]

there are so many different types of photography and i am interested in several of them. if you had to choose which setting you could change during a photoshoot which one would it be? shutter, aperture, iso,over/under exposed, etc. let me know the "one" that it would be, why, and what you would be taking pics of.

[Mark_Cohran]

Your question is unanswerable except in essay form as you given too many variables. For a glamour shoot in a studio with a tripod, I have to keep the shutter speed below the synch speed for the flash - and I want control of the aperture for DOF, and ISO for noise - so I control a combination of those three plus my lights.

If I were shooting sports, I'd want a fast shutter speed, so aperture and ISO would be my variables.

For an outdoor portrait, DOF is most important, so ISO and shutter speed become the variables, and I may have to use a tripod.

And so on and so on--and my choices might not be the same that others would make.