On-sensor PDAF, will it be as good as mirrored cameras?

Started 6 months ago | Discussions thread
havoc315
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Re: On-sensor PDAF, will it be as good as mirrored cameras?
In reply to EinsteinsGhost, 6 months ago

EinsteinsGhost wrote:

havoc315 wrote:

EinsteinsGhost wrote:

Technological possibility and reality don't always meet, and that is my point. Nobody has suggested that f/2.8 lenses are not possible for E-mount, but the fact is, Sony is clearly favoring f/4 to keep size and weight down, which bodes well with a key selling point of the E-mount. The opposite is true for A-mount (a reason SLTs grew in size substantially, from A33/A55 to A65/A77).

Yes, but for anyone that doesn't mind the size, they can simply use their 2.8 A-mount lens on the E-mount camera, with an adapter. Thus, they don't need an A-mount camera to be able to use an A-mount lens.

So you actually believe that Sony would make A-mount lenses because it takes more resources to do so than would A-mount bodies which can share most parts with E-mount (except for the mount and firmware differences)?

Huh? The question was "the unique benefits" of a mirrorless a-mount.  In other words, features that cannot exist for Sony dSLTs or for e-mounts.  Use of 2.8 lenses is not unique to a mirrorless a-mount, since those same lenses can be used on dSLTs and also on e-mount bodies with adapters.

I wasnt judging Sony production.  Though, you are missing the real cost of producing 2 nearly identical mounts -- you lose profit when you compete with yourself.  It would be more profitable to sell 200 e-mounts, than to sell 100 a-mounts and 100 e-mounts.  (Because of increased marketing costs, inventory costs, production costs, etc, etc, etc).

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