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Alex Cooke
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Original Articles Written by Alex Cooke

MTF Charts: The Quickest Way to Evaluate a Lens
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If you’re like most photographers, sharpness is probably near the top of your list of desirable attributes in a lens. A lens that is sharp from corner to corner is often worth its weight in gold (or so the manufacturers tell us). How do we measure sharpness, though?

The 5DS, f/11 and Confusing Circles
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For many centuries, scientists fought vehemently about the nature of light. Two sides debated a question pivotal to the development of physics: is light a particle or a wave? It wasn't until the 20th century that one of the most startling revelations about our universe came to prominence: light is both.