Monday, May 17, 2010

Exposure Rules Of Thumb

Starting out we all need simple rules to help us get the shot we want.  These are basic guidelines for that.
Aperture and Shutter speed and ISO are related - they are the exposure setting.
You need to experiment with these to get a feel for how they connect.

These are basic rules of thumb :
  • Small aperture = tiny depth of field = little in focus = hard to focus
  • Aperture > f11 - diffraction effects overwhelm ability of system to resolve detail
  • Sunny f16 - look that up - very important
  • Peak resolution - almost always between f5.6 and f11
  • Blurred background = subject close + background distant and aperture wide to moderate depending on subject distance, background distance.
  • Low ISO good, High ISO bad.
  • Reduce shake blur = shoot at shutter speed ISO/( 150 * focal length )
As you should be able to tell, most of these are mutually exclusive.
And reading those won't help one iota. You MUST try these. Do this experimenting for it's own sake, not when you are trying to take real photos.
And of course the most important rule of thumb - Bring More Batteries. emoticon - smile