Nikon Nikkor Z 135 mm f/1.8 S Plena
10. Autofocus and focus breathing
Autofocus The autofocus of the Nikkor 1.8/135 was tested with the help of the Nikon Z7 camera and the performance of such a set was silent and really hassle-free. Running through the whole distance range and confirming the focus took typically about 0.4 of a second, a very good result.
What's more, the performance of the focusing mechanism was very reliable. We didn't notice any focus play, wavering or lull, no matter whether we used this lens in our studio or outside. As if it wasn't enough, the AF-C mode, set to follow the eye of the model, performed really well - in the majority of photos the focus was exactly where we wanted it to be. Overall in this category the Nikkor deserves our highest praise.
We didn't notice the slightest problems with front or back focus tendencies either.
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| Nikon Z7, 135 mm, f/1.8 |
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Focus breathing
Focus breathing tests show reframing images as you oversharp them. We conduct the test by manually passing from the minimum focusing distance to infinity with the aperture stopped down; then we check how the field of view of the lens changed as a result.A frame change ranging from 0 to 5% we consider to be low. Between 5 and 10% you can speak about medium levels. Usually such values constitute also the maximum efficiency level of any breathing compensation algorithms, present in some bodies. Between 10 and 15% focus breathing is high, above 15% its level can be called very high.
The test video of the Nikkor lens is shown below:
