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LA-EA3 terminated

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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: 16 July 2020 at 17:15
Originally posted by pegelli pegelli wrote:

Are they preparing an LA-EA5? (i.e a LA-EA3 with support for screw drive lenses........

That would be nice.
Sony A7III A7RII NEX-5T HVL-F45RM LA-EA3 LA-EA4r MB-IV MC-11 EF-E II TLT ROKR MD-NEX KR-NEX DA-NEX
Minolta Maxxum 600si
Pentax Q7 5-15 15-45/2.8 8.5/1.9 11.5/9 AF-P/Q
 



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Post Options Post Options   Quote Snegren Quote  Post ReplyReply Direct Link To This Post Posted: 18 July 2020 at 15:53
I think I can be persuaded to buy an LA-EA5. Or I could use my A99....
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Post Options Post Options   Quote neilt3 Quote  Post ReplyReply Direct Link To This Post Posted: 20 July 2020 at 00:35
Originally posted by gigo gigo wrote:

Originally posted by vitor vitor wrote:

there is always the LA-EA4 as an "alternative".

Some may remember my love for 3x-1x macros. LA-EA4 does not recognize this lens. Even if you attach it to the camera, you will not be able to use the aperture because it will be "no lens".
AF is not possible with LA-EA3, but it recognizes it properly and can use the aperture.
I have high expectations for "LA-EA4r Monster Adapter".


The lens or LA-EA4 aren't a problem if you want to use this on lens on an E mount body .
Just fit a new chip from James Loa .
I replaced the electric contacts of a Minolta 2x tele-converter with one so I could mount a Minolta 300mm f/4 lens on it and still have AF and use it on E mount bodies .
The chip reports itself as a 600mm f/4 , so image stabilization works just fine .
( I swapped it over as a snapped the ribbon cable whilst cleaning the elements of the tele-converter )
See here where I made a post about it ; https://www.dpreview.com/forums/post/60010907

The fella asking in that thread had a lens whose chip was dead , so bought one for that reason .

It'll still work fine on an A mount body .
Just remember the chip needs to report another lens i.d so image stabilization needs to be switched off ( which it would do automatically with this lens anyway )
Also any micro focus adjustment might be thrown out if you had the chip programmed with an i.d of a lens you also have .

Please note these chips can't be used to replace the contacts on SSM lenses , as you remove any connections to the motor .





Edited by neilt3 - 20 July 2020 at 00:43
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Post Options Post Options   Quote gigo Quote  Post ReplyReply Direct Link To This Post Posted: 20 July 2020 at 20:48
The LA-EAx does not support tele-converter either.
I think a good solution is to replace the lens side chip and make the TC chip unreadable.
One day, I'll be wondering if this can be applied.
Thank you for the nice information.

It would be nice if SONY released the LA-EA4's Filmware that released the trivial restrictions, or the development environment.
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Post Options Post Options   Quote Miranda F Quote  Post ReplyReply Direct Link To This Post Posted: 12 January 2021 at 13:08
Originally posted by gigo gigo wrote:

The LA-EAx does not support tele-converter either.
I think a good solution is to replace the lens side chip and make the TC chip unreadable.
One day, I'll be wondering if this can be applied.
Thank you for the nice information.

It is possible to 'de-chip' a TC by lifting some of the pins and adding wire links. I did that to a 5-pin Kenko TC with a dead chip but haven't checked the pin connections that would be needed on an 8-pin.

It's a pity there don't seem to be any cheap E-mount TCs. A 1.4x would be useful to use E lenses on the A7 range without cropping.
Miranda F & Sensorex, Sony A7Rii, 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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QuietOC View Drop Down
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Post Options Post Options   Quote QuietOC Quote  Post ReplyReply Direct Link To This Post Posted: 12 January 2021 at 13:20
Originally posted by gigo gigo wrote:

The LA-EAx does not support tele-converter either.
I think a good solution is to replace the lens side chip and make the TC chip unreadable.
One day, I'll be wondering if this can be applied.
Thank you for the nice information.

It would be nice if SONY released the LA-EA4's Filmware that released the trivial restrictions, or the development environment.

FWIW: Kenko teleconverters work on all of the LA-EA adapters. The DGX models enable working AF with motorized lenses. Swapping the Kenko DGX electronics into the first-party teleconverter sounds like a possible solution to me.

The Monster modified LA-EA4r doesn't work with the Kenko teleconverters, but supposedly will work with the first-party ones.

Edited by QuietOC - 12 January 2021 at 13:31
Sony A7III A7RII NEX-5T HVL-F45RM LA-EA3 LA-EA4r MB-IV MC-11 EF-E II TLT ROKR MD-NEX KR-NEX DA-NEX
Minolta Maxxum 600si
Pentax Q7 5-15 15-45/2.8 8.5/1.9 11.5/9 AF-P/Q
 



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