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We need a LA-EA5: eye AF on SAL135mm f1.8

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Post Options Post Options   Quote Cliff Quote  Post ReplyReply Direct Link To This Post Posted: 18 December 2019 at 23:10
Originally posted by Cliff Cliff wrote:

Hi Paul, guess where you and I differ is that I have no interest in throwing away a long term investment in AF lenses. The reason I migrated to Sony from Minolta instead of jumping ship to Nikon or Canon was Sony's support for Minolta A mount. I infer you do not have either that history or investment in A mount glass. I am happy using lenses I am familiar with and that have produced good results for me for decades. I have no desire to spend money, either big or small to replace them.

The LA-EAx adapters were released by Sony early on in the life of E mount when Sony had few native E lenses. At that time on sensor focus was primitive so there was no reason to release an LA-EA5, the issue was marketing, not technical. Now that on sensor focus has matured there are enough E mount lenses available that Sony no longer feels the need to augment them with the rest of the A mount lineup. The issue is still marketing, not technical.

It would not be difficult to take the on sensor focusing signals that are sent to the LA-EA3 and substitute them for those coming off the SLT in the LA-EA4. Nor would it be difficult to add a focus motor to an LA-EA3 in addition to driving in lens motors. Minolta/Sony have accommodated both in camera and in lens focusing for a long time. There is also an adapter allowing AF using MF lenses on E mount. It seems likely using that motorized adapter to drive an A mount screw would not be difficult either.

My current bodies, Nex, A6500, A7II, A65 and LA-EA2,3,4 do most of what I want to do from pocket camera to birding and points in between. They are all so much more capable than the Contax IIIa I used for years that I am not pressed to buy new bodies. An adapter to allow me to use the current on sensor features with my old lenses would change that equation. But until then, nah.
Contax RF, Minolta7000i, Sony A100, A65, Nex5T, A7ii, A6500. 2 many lenses, mostly ordinary Minolta & 3rd party A, MC/D, other mf, vintage Vivitars & cats, LA-EA2,3,4 E16-50&55-210mm
 



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QuietOC View Drop Down
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Post Options Post Options   Quote QuietOC Quote  Post ReplyReply Direct Link To This Post Posted: 19 December 2019 at 02:04
Originally posted by Cliff Cliff wrote:

There is also an adapter allowing AF using MF lenses on E mount. It seems likely using that motorized adapter to drive an A mount screw would not be difficult either.

...An adapter to allow me to use the current on sensor features would change that equation. But until then, nah.

The Techart Pro will focus A-mount lenses.
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Post Options Post Options   Quote addy landzaat Quote  Post ReplyReply Direct Link To This Post Posted: 19 December 2019 at 06:26
Originally posted by QuietOC QuietOC wrote:

Originally posted by Cliff Cliff wrote:

There is also an adapter allowing AF using MF lenses on E mount. It seems likely using that motorized adapter to drive an A mount screw would not be difficult either.

...An adapter to allow me to use the current on sensor features would change that equation. But until then, nah.

The Techart Pro will focus A-mount lenses.
Which adapter? There is no A-mount adapter on the Techart website.
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Post Options Post Options   Quote Paul07 Quote  Post ReplyReply Direct Link To This Post Posted: 19 December 2019 at 08:05
Originally posted by Cliff Cliff wrote:

Hi Paul, guess where you and I differ is that I have no interest in throwing away a long term investment in AF lenses. The reason I migrated to Sony from Minolta instead of jumping ship to Nikon or Canon was Sony's support for Minolta A mount. I infer you do not have either that history or investment in A mount glass. I am happy using lenses I am familiar with and that have produced good results for me for decades. I have no desire to spend money, either big or small to replace them.


Again, I understand Cliff. I had plenty of expensive A-glass: the full f/2 original Minolta range, the different 35/1.4's and 85/1.4's over time, 135/1.8, 70-200G, 70-400G, 400G, ... and I did indeed spent a bit of money to move to E-glass.

Choices. Not always easy. Anyway, I would not count on Sony coming with more adaptor types.
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Post Options Post Options   Quote QuietOC Quote  Post ReplyReply Direct Link To This Post Posted: 19 December 2019 at 10:38
Originally posted by addy landzaat addy landzaat wrote:

Originally posted by QuietOC QuietOC wrote:

Originally posted by Cliff Cliff wrote:

There is also an adapter allowing AF using MF lenses on E mount. It seems likely using that motorized adapter to drive an A mount screw would not be difficult either.

...An adapter to allow me to use the current on sensor features would change that equation. But until then, nah.

The Techart Pro will focus A-mount lenses.
Which adapter?

With an A-mount to M-mount adapter
as shown in this video.
Sony A7III NEX-5T HVL-F45RM LA-EA3 LA-EA4 MB-IV MC-11 EF-E II MD-NEX KR-NEX DA-NEX
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Post Options Post Options   Quote pegelli Quote  Post ReplyReply Direct Link To This Post Posted: 19 December 2019 at 12:26
One small remark revives a thread dormant for 18 month

At the time of the original post I could somewhat understand the "need" due to limited native lens availability allthough for me it's probably more of a "wouldn't it be nice to have", but today with the GM 135/1.8 it's for sure the latter.

The way I look at it is simple, there's two platforms
1: A-mount with the A99ii and A77ii, most AF tricks in the book are available on those bodies
2: E-mount, now with a decent stable of native AF lenses also providing lots of AF advances


And then there's adapters allowing use of A-mount lenses on E-mount bodies and while a better AF adapter and more screw drive compatibility would be nice to have I don't think it's essential in my opinion. With a true "need" just choose one of the platforms above. For me the rest is just a bonus, nice to have some added flexibility but the limitations don't bother me that much.
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Post Options Post Options   Quote nandbytes Quote  Post ReplyReply Direct Link To This Post Posted: 19 December 2019 at 15:47
Originally posted by pegelli pegelli wrote:


1: A-mount with the A99ii and A77ii, most AF tricks in the book are available on those bodies


It is the point highlighted in bold where you and I disagree perhaps for reasons that we shoot differently\different things.

Now with A9/A7RIV/A6400/A6600 the a-mount bodies are no where close to the AF trick(s) these bodies can do (they actually only have one or 1.5 tricks but its a damn good one ).

The answer for me now is LA-EAX that can do all these tricks or an updated A-mount body.
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Post Options Post Options   Quote pegelli Quote  Post ReplyReply Direct Link To This Post Posted: 19 December 2019 at 16:00
Anand, which tricks are missing from the A99ii? And pls. note I didn't say "all" but "most"
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Post Options Post Options   Quote AudioDoc Quote  Post ReplyReply Direct Link To This Post Posted: 19 December 2019 at 16:23
Certainly I agree that it would be great if Sony produced an LA-EA5 adpater, but I repeat, I don't think they have any incentive to do so (sadly).

As Cliff said, when they introduced the LA-EA3 and LA-EA4 there was not much of a lineup of FE mount lenses. That is not the case anymore. The selection now is "Huge" and increasing all the time with many affordable options from third party manufactures (and Sony) as well as the more expensive high IQ lenses from Sony, Zeiss, Sigma etc.

I don't have many of the great Minolta and Sony A mount lenses that some users here have, so for me it made sense to limit my purchases to FE mount only. Especially since they fit my needs for smaller and lighter gear. I use the the SA-EA3 when needed with ZA-50mm f1.4, 70-200mm f.2,8 SSM G and Sigma 35mm f1.4 A as well as my 50mm and 100mm macro D lenses. Prefer to shoot macro in MF mode anyway. But they are not needed very often.

I use my LA-EA4 when I want to use my other A mount lenses like the 28mm f2.0 Minolta and I'm fine with that.

In reality I have a fairly complete line up of FE mount lenses. Its probably past time to start selling off some of my A mount gear, other than those that I need for when I shoot film. For my photography FE mount is superior and FE mount gear is getting better all the time, whereas A mount is stuck somewhere in time! Sadly. Love my old Minolta film cameras. Maxxum 5, Dynax 7 and Maxxum 9!
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Post Options Post Options   Quote EddyH Quote  Post ReplyReply Direct Link To This Post Posted: 19 December 2019 at 17:10
Originally posted by pegelli pegelli wrote:

One small remark revives a thread dormant for 18 month

At the time of the original post I could somewhat understand the "need" due to limited native lens availability allthough for me it's probably more of a "wouldn't it be nice to have", but today with the GM 135/1.8 it's for sure the latter.

Having started this thread, long time ago, I still would love to have it, or even a firmware update to make eye AF available on the SAL-version. But since this won't happen, I recently bought the GM 135/1.8 (at 1699 euro). I tried to trade in my old CZ 135/1.8 + LA-EA4, but the shop offered me only 200 euro! One of the reasons was that I didn't get the 'wobbling front element' fixed (which doesn't effect the lens performance). But for the rest, the lens is in quite good shape, especially optically it's perfect.
So having an LA-EA5, or a firmware upgrade to support eye-AF on the CZ, would have saved me a lot of money...
(which I probably would have spent on other Sony stuff)

Eddy

PS: if someone wants to make a better (and reasonable) offer, please PM me.
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Post Options Post Options   Quote nandbytes Quote  Post ReplyReply Direct Link To This Post Posted: 19 December 2019 at 17:19
Originally posted by pegelli pegelli wrote:

Anand, which tricks are missing from the A99ii? And pls. note I didn't say "all" but "most"


Real time AF and that's a "trick" that really sets e-mount apart from a-mount.
It might just be one trick but it's THE trick and might as well be "all" IMO.

With real time AF you just set your camera to it and forget about the AF settings for the most part. It just works. Can't get any simpler, better and more effective.

The other half a trick was animal eyeAF which is still in its infancy.
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Post Options Post Options   Quote QuietOC Quote  Post ReplyReply Direct Link To This Post Posted: 19 December 2019 at 17:50
So far the A9 (both), A7RIV, A6600, A6400, A6100 and RX100VII have Real-time Tracking.

The A7(R)III and RX10IV got Real-time Eye AF including for animals.

A-mount AF is behind CyberShots.

Edited by QuietOC - 19 December 2019 at 17:59
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Post Options Post Options   Quote pegelli Quote  Post ReplyReply Direct Link To This Post Posted: 19 December 2019 at 18:21
Originally posted by nandbytes nandbytes wrote:


Real time AF and that's a "trick" that really sets e-mount apart from a-mount.
It might just be one trick but it's THE trick and might as well be "all" IMO.

With real time AF you just set your camera to it and forget about the AF settings for the most part. It just works. Can't get any simpler, better and more effective.

The other half a trick was animal eyeAF which is still in its infancy.
OK, thanks, so if you "need" that the current solution is to get native E-mount lenses. If you don't "need" that I think the A99ii has most of the AF tricks, but indeed not all, but I also never said it had all.

My main point is that waiting or wishing for an LA-AE "whatever" that supports screw drive lenses and supports all the latest E-mount AF tricks is a most likely lost cause. I think it's much better to concentrate on available equipment that can do what you want than wish for unavailable equipment that could do what you want. But as always, YMMV.
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Post Options Post Options   Quote nandbytes Quote  Post ReplyReply Direct Link To This Post Posted: 19 December 2019 at 18:33
Well one can always hope to be able to have best of both right.

As much as I'd love to own all latest and greatest e-mount gear I cannot really afford the tele-primes. Minolta tele-primes on the other hand (especially 300mm f2.8 and 600 f4) can be had at great bargains.

Owning A99II with these lenses isn't an entirely bad idea but I rather not maintain two systems tbh (especially one losing value/dying/dead). If I must I'd probably look at simply adapting canon EF lenses and/or entirely moving to EOS R in the future when they have better bodies as almost all EF lenses adapt rather nicely with no such issues. Even the teleconverters works which isn't the case with a-mount lenses.

So comparing to competition the support provided by Sony is sub-optimal and not as competitive. I can see this losing them some customers.
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