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This enables me to leverage the power of the legacy A-mount lenses especially in the telephoto category. This design of the LA-EA3 is perfect for the heavier lenses like the

SAL70400G and SAL70400G2. A Must have for every adventurous Sony shooter.

I bought this so that I could could continue to use my two motorised A mount lenses and benefit from the new technology on my mirrorless a9.

Reading reviews this seems to be a better choice than the LA-EA4 which still relies on screw driven focusing. So far I’m pleased with the results.

I use it with Sigma 12-24mm & 150-500mm lenses and a Tamron 70-300mm A mount lens on an A7ii and A7Riii. If it has an AF motor it works otherwise use the LA-EA4.

I bought the LA-EA3 so I could use my sonic-drive A-mount glass (Sony and third party) with my new A7II, excited to have both on-sensor PDAF and CDAF to choose from. Unfortunately the PDAF is slow and unreliable, requiring good light and a detailed and contrasty target to successfully focus. CDAF is slower still, with many micro-adjustments at the end of the focusing cycle, but is unfailingly accurate. Interestingly, when PDAF does manage to lock on and focus successfully, it is then able to track rather well in continuous AF. But after extensive tests, I regrettably returned the LA-EA3 to the supplier for a refund. It may be that it works well on other Sony cameras (such as the A6000-series and the A7RII), but performance is too weak for me to recommend it in tandem with the A7II.

Conversely, the LA-EA4 I've bought works flawlessly, closely matching the PDAF in my Sony A99-based Hasselblad HV.

It does as it says on the tin as the saying goes. There is nothing more to say.

At first I thought I was going to have trouble with it as after a few shots with the SAL 70-400mm a warning popped up on the screen. Re-attaching the lens cured this. One or two glitches later I decided it was either just contacts bedding-in or my failure to make sure the mechanism had clicked into position. I've had no problems since and have changed back and forth between 70-400mm and 24-70mm as well as removing the LA-EA3 completely and re-attaching the FE 55mm.

I just bought this and I am pleased that I did. Now I have the ability to use all my other lenses thus keeping the overall costs down as well as extending my capacity and range photographically

Given what this does I am surprised that this adaptor is so small, compact and lightweight. However being a same-brand adaptor, the autofocus speed when using lenses should be quicker. I use it with a SAL-1635Z and the autofocus is very slow compared with the nearly instant autofocus of the kit E mount lens. I also find that the fit on the E mount side of this adaptor, where it attaches to the camera body, could be more rigid although this may have more to do with the E mount design rather than the adaptor itself.