What makes a good lens?

Canon L lens technology, explained simply.

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Canon L lens technology, explained simply.

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The Canon L series of lenses is marked by a bright red line on the lens barrel, and it’s the lens of choice for professionals using Canon cameras. A lot goes into the making of an L lens, so that the final image is sharp, clear, and free from optical distortions. Here are key L technologies, simply explained.
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