Exposure 101

Understanding the basics of proper film exposure is the basis for good photography, both on land and in the water.  If you have a snapshot camera like the Aquashot or the Snapper, then you can't do much to control your exposure other than select a decent film speed.  If this is the case, you can skip this section, or read it for informational purposes.

• Terminology: Aperture, shutter speed, and film speed.
• Application: Using the shutter and aperture controls to set exposure
• Digression #1: : Why is it called a "stop," and why is f/8 "wider" than f/11?
• Basic Strobe Use: TTL strobe control
• Digression #2: Why can't I set my camera to 1/500 second with my strobe?
• Advanced Strobe Use: manual strobe control
• Digression #3: Why does the guide number rule work?
• Putting it All Together: Exposure Techniques That Work

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