General sites that used to be very active in reviewing lenses, such as Photozone.de and slrgear.com post only rarely nowadays. They are basically doing us a service so I suppose we can't complain too much. But, it is a pity that these good sites are running out of steam. ePhotozine is the most active and provides excellent reviews on a variety of products, and lenstip still tries hard. The first-rate TDP of course is comprehensive for Canon and third party lenses. DxOmark has become very disappointing. OK many wouldn't care as they don't trust DxO, but they are meant to be selling software customised for most lenses on most bodies and they still haven't posted data for many popular lenses, such as the Sigma 150-600s, and any lenses on the 5DS.