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Still Photography

Aiming the Strobe

Pointing the strobe at the correct spot so that it eliminates backscatter, while still putting light on your subject, is the trick to using a strobe/flash successfully.

The backscatter section gave you a background on the cause of backscatter and how to eliminate it. This section addresses the specifics of strobe aiming a little more in depth.

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Getting to Know the Camera: Exposure

Cameras, whether the newest digital wonder or the (becoming old quickly) film cameras, share a lot of basic ideas and functions. If you know one, you can find the same functions in the other. Understanding how your camera works is the first step toward controlling it to get the pictures you want. For the sake of simplicity, I’ll talk about film cameras. The concepts are the same in digital cameras, it’s just the way digital cameras achieve each of the elements of exposure that vary.

Cameras are all just light-tight boxes that control the amount of light that falls onto a piece of film or digital sensor. They’re nothing magical, just a box. This controlled amount of light is called the “exposure.”

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Housing Basics

To get a camera to go underwater, take pictures, and get it back safely to the surface and in one piece without flooding it, you need to protect it from the elements somehow. This is where the underwater housing and the amphibious camera come in. Housings and amphibious cameras approach the same problem from different directions. The housing surrounds and encloses your camera to protect it, while the amphibious camera itself is sealed from the elements.

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Viewfinder Parallax Marks

What are all those lines in the viewfinder?

What do those annoying lines in the viewfinder mean? Generally, there are three types of lines in the viewfinder. One set of lines tells you where the edge of the picture begins. Another set, seen on auto and manual focus SLR cameras, are the focus zone marks. Focus area marks are usually a circle and/or bracket box in the center of the viewing area. We won’t be dealing with those in this article. The others that look like notches or lines across the top of the viewing area are called parallax marks or lines. (See fig. 1,2 and 3 for examples)

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DIVING IN DEPTH TAGS

  • focus marks in the viewfinder
  • parallax error photography

Underwater Camera Housings

Our Underwater Camera Housings section provides information about different types of housings, amphibious cameras, and the maintenance of them. Knowing how to care for your camera housing is an important factor in protecting your camera investment.