on 13 February 2014
I bought this wide angle lens for use with my Sony Nex 3. The lens was well engineered using good quality precision machined aluminum and half decent glass, but regretfully was not suitable for the Sony Nex3 with it's standard 16-50 lens, as serious vignetting was visible from lens settings of 16-25 mm, making the product as good as useless for intended application of giving a wider angle of view. From 26mm to 50mm the vignetting disappeared and the lens became usable, the auto focus worked OK.
The real problem here is this - the angle of view is wider at 16mm using only the standard Sony lens, than at 26mm with the adapter lens fitted! This makes the lens, as a wide angle add on worse than useless, and completely unfit for purpose.
But this review is not all negative as the macro element of the lens assembly works pretty well, when it is detached from the wide angle element and it allows some half decent close up 'macro' images to be photographed with good clarity and detail, albeit with a very limited depth of field, which is fine and to be expected with macro photography.
So you might well ask why have I scored this product with two stars, rather than just one? Well I won't be sending the product back as the macro element alone is worth the low asking price of this lens, and will come in handy for future close up work - but as a wide angle adapter for the Sony Nex3, forget it - just stick to the original Sony lens at 16mm for a wider, more detailed view!