Macrography was invented by Fritz Goro. Macrography is taking very close up photographs usually of insects and other small objects. The photos usually give you the impression that there object is alot bigger than they really are in real life. Macrography requires certain lenses, usually ones with larger barrels for clearer focusing.
35 mm equivalent magnification (or 35 mm equivalent reproduction ratio). Is a measurement that indicates the magnification you get with a small sensor format.
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In macrography 'depth of field' and 'lighting' is very important. Sufficiently and evenly lighting the object your taking a picture off can be difficult to capture. Some cameras can focus on object so much that they touch the front of the lens.
Depth of field is extremely small when focusing on close objects. A smallapeture is often required to produce acceptable sharpness across a three-dimensional subject.
Sources:
Wikipedia
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