Jump to content

sony lens adapter

Recommended Posts


i am currently using a sony a77 and considering buying a sony a7r mk3 or 4, obviously these are e-mount cameras, all my lenses are a-mount.

my question is, if i use an adapter to fit my a- mount lenses do you loose any picture quality with them. Thanks.

Link to post
Share on other sites

Simple answer: no.

Depending on which adapter you buy, you even gain image quality: the LA-EA1 and EA3 adapters don't have the semitranslucent mirror which is in your a77 so you gain about 1/3 stop of light. Be sure to check if your lenses are compatible with these adapters though: the newer A-mount lenses should have decent autofocus but the older lenses have very poor (or no) AF with the LA-EA1/3. If you currently have A-mount fullframe lenses, get EA3.

If you have older lenses or ones incompatible with the LA-EA1/3, get the LA-EA2/4 (4 for fullframe lenses). This one has a separate AF-module and a semitranslucent mirror, so it makes your E-mount camera mimic an A-mount camera. Image quality should be pretty much identical to what you have now (except for improved ISO-performance in the newer cameras).

Link to post
Share on other sites

The Sony LA-EA 4 will surely be the best option for you as long as you are considering a full frame E-mount camera. Despite the fact that you are using Sony A77 (which is a crop sensor camera), your lenses are suited for the full frame format>

I am using the LA-EA 4 even for the old Minolta lenses

Link to post
Share on other sites

Keep in mind that the AF-module of the LA-EA4 is quite old and very limited (few AF-sensors spread over a small area). On top of that, you loose some light compared to the EA3. @Taher Abouraya

The LA-EA3 on the other hand uses the phase detect AF-capabilities of your sensor so should be capable of vastly better AF than the LA-EA4, except that this only works with the newer Sony A-mount lenses.

Link to post
Share on other sites

It is true that you loose 1/3 of a stop which can be easily compensated. But, the AF on the EA3 is really very slow. I think you need to try both before you take a decision. I also have the LA-EA 1 and LA-EA2 for the crop sensor and the case is the same the EA1 is very slow when you use the SAM or SSM lenses or even manual focus in case you use the lenses that do not have an AF motor. 

Link to post
Share on other sites

  • 2 weeks later...

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Posts

    • Shot in SD with Sony a7ll.

      Welcome, dear visitor! As registered member you'd see an image here…

      Simply register for free here – We are always happy to welcome new members!

    • Hello, I wanted to share the set up for tracked panoramas that I am currently using, wich is based on the use of two two way head from Sunway: the DT-03 and the DT-03R. Both heads are very steady. They are made up of two parts: 1) a 360º graduated rotating/panoramic base with a bidirectional tilt central body (adjustable with two locking levers), and 2) an upper part that, in the case of the DT-03, it is a clamp quick release plate and, in the case of the DT-03, it is a graduated panoramic screw-on rotating head, both compatible with the Arca Swiss system. These upper parts are removable and, therefore, can be replaced by other standard rotating jaws type IRC-64, or by other indexed ones. As I said, I use one of them, the DT-03, as an equatorial wedge, placed directly on the tripod or on a leveling base. Its quick release head with clamp allows me to quickly place the tracker on top and be able to align easily. To align it, I loosen one of the central pins of the kneecap a little, and leave the other loose. This way I can safely achieve the degree of inclination of the tracker that I want. That, combined with the 360º rotating base that the head has, is an excellent option for precise and fast alignment. Then I place the DT-03R on top of the tracker, and use it as a panoramic flat base on which I mount an L-plate combined with a rotating clamp. On these last accessories I place the camera, ready to shoot, being able to move it both in the horizontal and vertical axis. The DT-03R screwed to the tracker allows me to have a solid flat and rotating base on which to pan without losing horizontality and, at the same time, I can compensate for the rotation of the tracker thanks to its base, which also rotates 360º. So the set up is as follows: Both This is what I use: Tripod Leveling base (optional) Sunway DT-03 two way head as a wedge Star tracker from Move Shoot Move Nomad Sunway DT-03R as a leveled base L bracket 360º rotatory arca swiss head Here I share some photos of the set up; I hope it helps:     View: original size View: original size View: original size You can find them in the Sunwayphoto website. You can also see down below some of the photos that I took with this set up: View: original size View: original size View: original size @mallorca_landscapephotography
    • My problem may be related to yours or maybe this should be a separate thread. My (used) A1 has always (1-year) had minor play in lens/mount snugness but no issues. Then, two days ago when I turned on the camera, it did not recognize the already mounted lens, did not display the F-stop and would not autofocus. The contacts look normal.  I cleaned them contacts, remounted the lens multiple times, tried my four other ff lenses (Sony 20, 90, 70-200, 200-600) but nothing changed. I also tried shifting the small play in the mount. Nothing helped yesterday but today shifting the lens reproduces the problem very clearly; a very slight turn of the lens and behavior is normal or it is not (no autofocus, no F-stop display). One time it showed the message lens is not properly attached. The looseness is not in/out but rotational and very slight, though noticeable.  Sorry for lengthy description. Any ideas would be appreciated.
  • Topics

  • Create New...