The Sony FE 70-200mm f/4 G OSS is, undoubtedly, a high quality with just a few weaknesses. The resolution is generally on a very high level except at 200mm @ f/4 where the corners are too soft. Lateral CAs are well corrected. [...] It feels exceptionally solid and the control rings feel silky smooth.
It is a very capable lens which delivers a very good optical performance in most situations.It is built well and its AF is very quick. So if you need a flexible tele zoom be assured that the Sony usually will deliver good images only limited by the modest aperture. The price is a bit high compared to Canon’s offerings but not expensive compared to Sony’s other FE lenses.