Sony 100mm f/2.8 Macro - £580
The Sony lens gets off to an unimpressive start at its widest apertures, before sharpening up and doing well at the middle.
Results aren't too bad at the centre of the frame, but as you venture further towards the edges, performance drops off.
Visible distortion in images is low, but measured distortion puts the Sony lens somewhere in the middle of the group.
Image test verdict
There's a lot to like about this lens, but considering its price, it's disappointing that it doesn't provide a consistent performance.