Review by Klaus Schroiff, published September 2010

Introduction

Such adapted lenses can only be used with manual focusing and "working aperture" - there's no data coupling whatsoever here. However, due to the lack of fast prime lenses it's surely one of the more interesting fall-back solutions for the NEX-system. The field-of-view is equivalent to about 75mm in and in terms of depth-of-field it behaves like a f/2.8 lens in this scope - a rather obvious solution for portrait photography for instance. At around 650EUR the Zeiss lens isn't exactly a budget lens but compared to native Leica M lenses it is actually very affordable.

I reckon you'll agree that the Zeiss is a beauty of a lens. It's a full-metal construction build to the highest standards - except for the lens cap which is rather crappy. The focus ring operates as smooth as silk (dampened). The aperture is set in 1/3EV steps at the front of the lens. Any change of the aperture is applied immediately so you can check the effect on the depth-of-field on your screen (without the darkening like when stopping down a DSLR with a conventional optical viewfinder). The lens extends a bit when focusing towards closer focus distances. The front element does not rotate.

Manual focusing may sound like a major annoyance but it is not that bad actually. On Sony NEX cameras you can easily switch to a magnified focus view so accurate manual focusing is really simple ... unless you try to track a moving object of course. We recommend this camera-lens combination for static scenes only.