Spring 2012

Spring 2012
by ani

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A prime lens has a much simpler design, so for the same price, and weight, you can get larger lens elements and therefore a higher aperture. However, there are some other factors to what you're asking. In the case of a 18-55 zoom lens, the lens has to have a retrofocal design, because at the wide end you are going down to much smaller effective focal ...

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