Why are the A7's lenses so big?

Started 5 months ago | Questions thread
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Maurizio Mancioli
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Why are the A7's lenses so big?
5 months ago

Regular full-frame DSLRs have large lenses because of the mirror. Rangefinder camera lenses (such as a Leica 35mm f/1.4 Summilux) are much smaller, because of the reduced distance between the lens and the sensor. Then, why are Sony A7's lenses so hefty (and with such a low aperture), considering that they're even closer to the sensor?? Can someone from DPReview explain?

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