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03-26-2016, 08:38 AM   #1
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Different kinds of Sony Mounts

Dear Sir, I Googled for "why not one mount for Sony DSLRs and Mirrorless cameras", and got no answers.

Perhaps as the world's largest camera stores, you have the answer.

Note Pentax K mount is the same for DSLRs as well as their Mirrorless cameras. This makes lenses cheaper to produce due to volumes.


03-27-2016, 03:17 PM - 1 Like   #2
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This thread would be better suited for the non-Pentax section, so that others can comment, but I'll leave it here for now.

Sony has two lens mounts: the A mount and the E mount. The former was originally developed by Minolta and ended up being used with Sony's SLRs/SLTs, which had a mirror and consequently a much longer flange distance. The E mount was designed for mirrorless cameras and thus allows for much more compact designs. A mount lenses can be adapted and used with full functionality on E mount cameras; an adapter with a translucent mirror was even released to enable even full PDAF support.

If you ask me, given Sony's recent gravitation toward mirrorless bodies, the A mount will slowly be phased out. A big advantage of their E mount mirrorless cameras (other than compactness) is the fact that they can accept just about any lens with the proper adapter, which was not true of A mount cameras.

Note that all the recent full-frame mirrorless bodies (A7 series) use the E mount despite being referred to as "alpha" cameras.

This is a tangent, but the reason the K-01 didn't do so well was partially because its mirrorless design offered little benefit to the user. The key advantage of mirrorless (compactness and the ability to adapt almost any lens) simply didn't apply, since the K-01 had a K-mount mirror box the same size as a DSLR. Now, if the K-01 had a K-mount without the mirror box, small mirrorless-only K-mount lenses could be developed, and other K-mount lenses could also be used with a hollow adapter tube.

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