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Download PDF - The Canadian Nature Photographer

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MACROPHOTOGRAPHY TOOLS, TIPS & TECHNIQUES FOR DIGITAL PHOTOGRAPHERS 2012<br />

that requires edge sharpness. For flowers and most subjects in nature, they work very well, and this is<br />

how I got started in macrophotography. Also, once you attach a closeup filter to your camera, you can<br />

no longer focus the lens to infinity without removing the filter. Higher quality two-element closeup<br />

filters do an excellent job. You can attach them to a telephoto lens, normal lens or even a macro lens, so<br />

long as they have the correct filter thread size.<br />

Closeup filters look like regular filters and come in different diameters and strengths (diopters). <strong>The</strong>y<br />

screw onto the front of your lens and permit your camera to be positioned closer to your subject – you<br />

can attach them to any of your lenses.<br />

Technical information on closeup filters<br />

<strong>The</strong> magnifying power of a closeup filter is measured in diopters, although some companies (e.g.,<br />

Olympus) indicate the focal length of the closeup filter. Here is how you can convert one to the other<br />

and determine how close you can get to your subject with different closeup filters and lenses.<br />

Diopter = 1000 mm E.g. +2 Diopter = 1000 mm +4 = 1000 mm<br />

Focal length of filter in mm 500 mm 250 mm<br />

A +2 Diopter closeup filter will permit you to focus on objects 500 mm from the front of the lens, and a<br />

+4 Diopter closeup filter will permit you to focus on objects 250 mm from the lens.<br />

Above are four closeup filters. On the left is a Nikon 2 element closeup filter, followed by three Hoya<br />

single lens closeup filters. <strong>The</strong> three 52 mm closeup filters cost me around $50, while the dual element<br />

closeup filter was over $150.<br />

Robert Berdan | 14

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