What type of lens is a 300MM?

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โˆ™ 2010-08-31 03:20:38

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A 300mm lens is a telephoto lens, which will magnify the subject. It used to be that a 300mm lens was actually 300mm long, but with the use of compound lenses, they can be shorter, but have a "virtual" length of 300mm.

On a 35mm camera, about 50mm is the "natural" lens size -- most cameras come with a 50mm lens. You can divide 300mm by 50mm to find out how much it magnifies from the "natural" position. 300/50 = 6, so it will magnify 6 times.

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Q: What type of lens is a 300MM?
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