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Adaptors from E-mount to A-mount?

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Jozioau View Drop Down
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Post Options Post Options   Quote Jozioau Quote  Post ReplyReply Direct Link To This Post Topic: Adaptors from E-mount to A-mount?
    Posted: 26 May 2019 at 02:48
Don't know whether this has been covered before, but I was just wondering whether there's any way of adapting full frame e-mount lenses to a-mount?
With the design and manufacture of lots of top e-mount glass at the expense of the gradual fade-out of a-mount, it occurred to me it would be useful to be able to adapt some of the G series e-mount glass to a-mount bodies, if such a thing were possible.
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SnowFella View Drop Down
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Post Options Post Options   Quote SnowFella Quote  Post ReplyReply Direct Link To This Post Posted: 26 May 2019 at 04:30
With the registration distance difference it would need to be an adapter with glass in it, and since it's rather a large difference I'd think it would act like a rather powerful teleconverter.
And that's not to mention the amount of electronics and mechanical bits it would need to have inside if you want automatic aperture control and focus.
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sybersitizen View Drop Down
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Post Options Post Options   Quote sybersitizen Quote  Post ReplyReply Direct Link To This Post Posted: 26 May 2019 at 05:51
Originally posted by Jozioau Jozioau wrote:

... I was just wondering whether there's any way of adapting full frame e-mount lenses to a-mount?

No realistic way. In fact, there's almost no likelihood of sensibly adapting E-mount lenses to any other mount in existence. Assume E-mount lenses will be useful on E-mount bodies only. The flip side, though, is that so many other lenses can be adapted to E-mount bodies.
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Post Options Post Options   Quote Hezu Quote  Post ReplyReply Direct Link To This Post Posted: 26 May 2019 at 19:37
Originally posted by sybersitizen sybersitizen wrote:

Originally posted by Jozioau Jozioau wrote:

... I was just wondering whether there's any way of adapting full frame e-mount lenses to a-mount?

No realistic way. In fact, there's almost no likelihood of sensibly adapting E-mount lenses to any other mount in existence. Assume E-mount lenses will be useful on E-mount bodies only. The flip side, though, is that so many other lenses can be adapted to E-mount bodies.
Apparently there is a E mount to Nikon Z adapter.
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Post Options Post Options   Quote Snegren Quote  Post ReplyReply Direct Link To This Post Posted: 26 May 2019 at 19:40
Originally posted by Hezu Hezu wrote:

Originally posted by sybersitizen sybersitizen wrote:

Originally posted by Jozioau Jozioau wrote:

... I was just wondering whether there's any way of adapting full frame e-mount lenses to a-mount?

No realistic way. In fact, there's almost no likelihood of sensibly adapting E-mount lenses to any other mount in existence. Assume E-mount lenses will be useful on E-mount bodies only. The flip side, though, is that so many other lenses can be adapted to E-mount bodies.
Apparently there is a E mount to Nikon Z adapter.

That is because Nikon was smart and selected a very short register distance.
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sybersitizen View Drop Down
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Post Options Post Options   Quote sybersitizen Quote  Post ReplyReply Direct Link To This Post Posted: 26 May 2019 at 19:55
Originally posted by Hezu Hezu wrote:

Originally posted by sybersitizen sybersitizen wrote:

Originally posted by Jozioau Jozioau wrote:

... I was just wondering whether there's any way of adapting full frame e-mount lenses to a-mount?

No realistic way. In fact, there's almost no likelihood of sensibly adapting E-mount lenses to any other mount in existence. Assume E-mount lenses will be useful on E-mount bodies only. The flip side, though, is that so many other lenses can be adapted to E-mount bodies.
Apparently there is a E mount to Nikon Z adapter.

It remains to be seen how sensible that adaptation will be.
 



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Miranda F View Drop Down
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Post Options Post Options   Quote Miranda F Quote  Post ReplyReply Direct Link To This Post Posted: 28 May 2019 at 09:16
If you mount an E-mount lens on A-mount camera via a dumb mount adaptor, you will lose infinity focus due to the longer registration distance (to the sensor). An adaptor with a lens element will in theory give you back infinity but the likely quality of this will ruin the benefits you hope to get.
Obtaining electronic control of the lens will also be difficult unless you can find someone who's had a go.
It seems quixotic to try, when there are nice E-mount cameras out there, and nice A-mount lenses at steadily reducing prices.
Miranda F & Sensorex, Sony A58, Nex-6, Dynax 4, 5, 60, 500si/600si/700si/800si, various Sony & Minolta lenses, several Tamrons, lots of MF primes and *far* too many old film cameras . . .
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Bob J View Drop Down
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Post Options Post Options   Quote Bob J Quote  Post ReplyReply Direct Link To This Post Posted: 28 May 2019 at 10:27
The E bayonet, is fairly similar to the Nikon F - to such an extent that you can fit an e-mount lens onto an F mount bayonet, although it won't lock.

So, if you had a Nikon F to A mount adapter (theoretically possible, although I've never seen one) you could attach it to an A mount camera and mount an E mount lens on the front - but...

...you would have no electronic linkages, so the G glass would not focus or have diaphragm control. However, you would be able to attach manual focus/manual aperture lenses, although there would be no infinity focus.
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Post Options Post Options   Quote neilt3 Quote  Post ReplyReply Direct Link To This Post Posted: 28 May 2019 at 10:44
Originally posted by Bob J Bob J wrote:



So, if you had a Nikon F to A mount adapter (theoretically possible, although I've never seen one) you could attach it to an A mount camera and mount an E mount lens on the front - but...
.


I have a Nikon F lens to Sony A mount body adaptor ( a glass-less one ) I've used it a few times with a friends Nikon 500mm f/4 (or f/4.5 , I forget which now ) and it works just fine . The longer lenses focus just past infinity to take care of any heat expansion etc , so I've never been unable to focus on anything I'd be using a 500mm lens on , birds etc .
Shorter lenses are an issue as it's a thin extension tube .

Using one to hold an E mount lens on an A mount body would be of very limited use as without the adaptor the difference in registration distance alone is already huge , as Bob says .
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