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Help with an A7R adapter

Discussion in 'Sony Alpha E-Mount Cameras' started by rappar, Nov 30, 2014.

  1. rappar

    rappar New to TalkEmount

    6
    Nov 30, 2014
    HI,
    This is my first post, I have run into a bit of a problem and wonder if there is a solution...

    I have a Sony A7R with the E mount. I have the Sony LAE4 adapter that permits the mounting of A lenses to the A7R.

    I have a Samyang Tilt Shift lens I would love to use on my Sony. It is an A mount lens. The base of the Sony LAE4 adapter is so thick that the Samyang will not mount. I am looking for an adapter I can use with the Samyang so it works on the A7R.

    Is Sony the only company that makes an A to E adapter? I have seen the LA-EA1A adapter, it looks like it might work as the base of it is not nearly as thick as the E4. Given the Samyang is a manual lens, auto focus is not an issue. I find with the focus peaking on the A7R, manual focus is like a walk in the park for most of my shots.

    If anyone has a solution that would permit me to keep the tilt shift, it would be great. I have a full frame E mount Rokinon which, as you know is the same company, and I have been impressed with what it gives me. Right now, Sony FF lenses for the E mount are a bit thin.

    Thanks,
    Ron
     
  2. michelb

    michelb TalkEmount Regular

    196
    Oct 27, 2013
    Greater Montreal area in Quebec, Canada
    Michel Brien
    I assume you are talking about the 24mm F 3.5 Tilt/Shift

    Where is it rubbing ?

    LA-EA1 will cause vignetting on A7 series since it was designed for APS-C format

    You are probably looking for one of these:
    http://www.ebay.ca/itm/Sony-Alpha-Minolta-AF-Lens-to-Sony-E-Mount-Adapter-for-NEX-NEX-5-NEX-7-MA-NEX-/271686143477?pt=US_Lens_Adapters_Mounts_Tubes&hash=item3f41c18df5

    Cheap but could do the job ( I am not certain if this will cause vignetting since they were introduced before FF E-Mount was launched )

    I think have one similar to the one in the ad. Maybe i can try it later if i can find it.
     
  3. José De Bardi

    José De Bardi Assistant in Virtue

    Aug 31, 2013
    Dorset, UK
    José
    LA-EA3 might work
     
  4. rappar

    rappar New to TalkEmount

    6
    Nov 30, 2014
    Yes, that is the lens.
    When I try and mount it, the lens is too big. The wide bottom on the LAE4 sticks out so much the base of the tilt shift does not fit. Some adapters, like the LA-EA1A seem to be flat across the bottom and do not stick up the way the E4 does. I think that is where the problem lies with the E4.
     
  5. rappar

    rappar New to TalkEmount

    6
    Nov 30, 2014
    I am new to Sony from Nikon. The link above takes me to a Minolta to Nex adapter. Is this what I need to make an A mount lens work on an E mount body? This adapter looks like it would solve the problem as it is flat across the whole adapter surface and does not have the large bump that sticks out of the bottom of an LAE4 adapter.
    Ron
     
  6. rappar

    rappar New to TalkEmount

    6
    Nov 30, 2014
    The listing for this at B&H says it is for full frame so thanks for this. The link above takes me to another possible solution that is cheaper IF it works. I do not necessarily want the cheapest fix as sometimes that leads to more problems.
    Ron
     
  7. SpaceManSpiff

    SpaceManSpiff TalkEmount Top Veteran

    547
    Dec 13, 2013
    Tucson, AZ
    Eric
    I don't have any experience with that lens or that adapter...but it should work on your A7r with your a-mount samyang lens. The e-mount is the same, be it on an older NEX body, a3000/5000/6000, or an A7 series. That dumb (no electronic connections) adapter should allow you to use a-mount sony glass or older Minolta Maxxum lenses.
     
  8. michelb

    michelb TalkEmount Regular

    196
    Oct 27, 2013
    Greater Montreal area in Quebec, Canada
    Michel Brien
    I just tried my A7r with LA-EA4, LA-EA2, LA-EA1 and a Pixco Minolta/Sony-NEXadapter i bought last year to try on my NEX-7

    Please don't judge the pictures, the weather was Sh**** here today
    Full size can be seen here: https://www.flickr.com/photos/55173440@N08/sets/72157649132334287/

    I decided to try with KM AF 17-35 F2,8-4(D)
    15918413275_e3a09e5518_b.

    With LA-EA4 everything is as expected ( all shots at 24mm F5.6 but i did try 17mm, 20mm, 28mm and 35mm to see if things can change and everything seemed constant
    15732681887_0f29346e8c_b.

    Then LA-EA2
    15916454811_5d8cb0b716_b.
    And the result. But note the frame is only the center 4800 X 3200 pixels due to the automatic crop to APS-C the camera detects the LA-EA2 and changes the cropping mode.
    Similar vignetting occurs at 17,20,28 and 35mm
    15732394529_4fdf40270d_b.

    Once we remove the auto APS-C mode to get back to Full Frame, this is what we get ( very similar at 17, 20, 28 and 35mm ) We do however get back to 7360 X 4912
    15918399435_65672239a7_b.

    With LA-EA1 with same Full Frame mode. Similar vignetting occurs at 17,20,28 and 35mm
    15731221750_c363b2cd23_b.

    Now the off Brand ( Pixco but other brands might be similar ).
    I paid 21,19$ Cdn$ shipped and delivered last year for this adapter. Does not come with caps though.
    15892719106_8142e59f1b_b.

    Now these are kind of bizarre in that since there is no manual aperture ring on A mount lenses and these adapters have a rotating ring that allows for a mechanical change in aperture. These rings are weirdly marked as Lock/Open, On/Off or Open/Close or Max/Min with arrows pointing in the direction of the setting. any intermediate setting is somewhere in between but there are no click stops to estimate the aperture.
    In the case of my adapter, it says Lock/Open and for max aperture (wide open, the ring looks like this)
    15917865732_4dc77a8d83_b.
    Set at minimum aperture, it looks like this
    15916554221_48ac7b105f_b.

    And here is the result. No vignetting or other defect that may make it unusable. However like mentioned above the aperture value used is only estimated since i rotated slightly from the left side about 5-7mm to the right of the open setting
    15296263474_1e7c2a3c94_b.

    While i was at it i also tried a non-chipped lens ( Tamron SP Adaptall II 180mm F 2.5 with Adaptall/Maxxum adapter directly on LA-EA4 to see if i would get any weird behaviour. I was afraid the AF motor of the adapter might go berserk like i experienced with some TC's but everything seemed fine.
    15731263780_a24682f9fe_b.

    So the only thing uncertain in the case of the Samyang 24 TS is if it has its own manual aperture setting ring. If it does, you will be OK. If it relies on the camera's aperture mechanism, it will be a pain to figure what aperture you are using.
     
    • Like Like x 2
  9. rappar

    rappar New to TalkEmount

    6
    Nov 30, 2014
    I am in Canada as well, the off brand seems to be the way to go. Can you tell me, was this just an EBay find or is there a particular place I should go to look at that adapter?
    Thanks,
    Ron
     
  10. rappar

    rappar New to TalkEmount

    6
    Nov 30, 2014
  11. michelb

    michelb TalkEmount Regular

    196
    Oct 27, 2013
    Greater Montreal area in Quebec, Canada
    Michel Brien
    Mine came from here: http://www.ebay.ca/itm/Sony-Alpha-Minolta-MA-Lens-to-Sony-E-Mount-Adapter-For-NEX-5T-3N-6-5R-F3-7-5N-5C-/281516065912?pt=US_Lens_Adapters_Mounts_Tubes&hash=item418baa4478

    Takes 3-6 weeks ro arrive

    The one you show from B&H is for Alpa ( not Alpha) Alpa was an old Swiss company if i remember well and that would DEFINITELY NOT fit

    What you need is probably called:
    Minolta AF to NEX adapter
    or
    Sony Alpha (or A-Mount) to E-Mount

    Confusing ? You bet

    I could sell you mine but shipping will probably kill the deal