The Sony FE 55mm F1.8 ZA Carl Zeiss Sonnar T* is one of the first lenses for Sony's fledgling full frame mirrorless system, and designed as a fast 'normal' prime to complement the Sony Alpha 7 and 7R. However at around $999 / £900, it costs several times as much as the 50mm F1.4 options for DSLR systems. So what exactly are you paying for?

With our Sony Alpha 7R review well and truly underway (with luck and a following wind it should be finished in a week or so), here we're looking at one of the lenses we think buyers of this compact, high resolution full frame camera are most likely to consider. The other is the compact FE 35mm F2.8 ZA Carl Zeiss Sonnar T*, and we'll aim to bring you a report on that lens shortly, too.   

In this 'Lab Test report' we're publishing full lens test data (as usual prepared for us by our collaborators at DxOMark) in our unique lens data widget, and presenting our own analysis of what it all means. This is a new article format, which we'll be using from now on to help cover more lenses than we've been able to in the past. It will complement, rather than replace our in-depth reviews, which we'll still be producing to cover the most interesting lenses on the market.

Full test results on DxOMark (and other recent reviews)

Our lens test data is produced in collaboration with DxOMark. Click the links below to read DxOMark's own review of the Sony FE 55mm F1.8 ZA Carl Zeiss Sonnar T*, or see other recent reviews on the DxOMark website.