AF performance using Nikon lens on A7rII (Commlite AF adapter)

The only AF enabled Nikon to Sony E adapter as at 2016

Since the Sony A7 series was in the market, it had been paired with different lens. From film camera (SLR & Rangefinder) to DSLR, countless combinations have been tested, apparently making the A7rII a 42MP digital back.

It is a great success in adapting Canon glass on A7rII but how about the Nikon glass? Well, the first AF-enabled adapter, Commlite ENF-E1, was available in 2016.

The distributor has shared the test result of this adapter when paired with different Nikon glass, you can find it on youtube. Overall speaking, the AF performance is not that promising as in Cannon lens and only a limited number of Nikon lens are considered to be “useable”.

A7RII & Nikon 24-70 f2.8 G

I have  thoroughly tested several Nikon lens I owned. In fact two of them are doing very good:

  1. Nikon AF-S NIKKOR 24-70mm f/2.8G ED
  2. Nikon AF-S NIKKOR 70-200mm f/2.8G ED VR II

Those are the zoom lens I use most and their range (i.e. 24-70mm, 70-200mm) serves most scenario. But what about incompatible lens?

You can find the compatible list from manufacturers website. Out of curiosity however I have tested two incompatible lens, they are:

  1. Nikon AF-S Nikkor 300mm f/4D IF-ED
  2. Sigma 150-600mm F5-6.3 DG OS HSM Sports
DSC05540_1-250 sec at f - 7.1_ISO 250

A7RII + Nikon AF-S 300mm f4

DSC05589_1-400 sec at f - 8.0_ISO 4000

A7RII + Nikon AF-S 300mm f4

DSC05589_1-400 sec at f - 8.0_ISO 4000-2

100% crop

The AF performance is not good, the successful rate is around 70% – 80% however it will drop to 40% – 50% in relatively low light situation. Using the centre AF point achieves the highest hit rate while the AF point in the far corners are not usable.

DSC05640_1-320 sec at f - 8.0_ISO 500

A7RII + Nikon AF-S 300mm f4

DSC05640_1-320 sec at f - 8.0_ISO 500-2

100% crop

When it can nail focus, the image quality of this combo is superb, you can see every detail even in 100% crop.


Sometimes the AF is good enough for shooting (Big) bird

DSC05701_1-125 sec at f - 8.0_ISO 1600

See what this adapter is capable of


Sometime, AF is fast enough to shoot small bird (Sparrow)


100% crop


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