The Tamron AF 28-75mm F/2.8 Di III RXD is a new lens for Sony E mount cameras. Not only is it the first zoom lens for E mount from a third party manufacturer, it is also a completely new design exclusive for mirrorless full frame cameras.
The Sigma MC-11 adapter allows you to use Canon EF mount lenses on a Sony E mount camera, with autofocus capabilities! Officially, only the Sigma lenses are supported, but the adapter also works with most existing Canon EF lenses. You can get it for just 150$ when it is on sale, so it is quite aggressively priced compared to similar products such as the Metabones adapter.
The Canon EF 200mm f/2.8L II USM is an inexpensive telephoto prime lens for full frame cameras. It has been on the market for quite a while, a little over 20 years to be more precise. Can it still convince in terms of optical performance on a modern, high resolution camera? I have tested this lens with the Sigma MC-11 adapter on the Sony A7 III.
With the FíRIN 20mm F2 FE MF, Tokina offers a very interesting wide angle prime lens for the Sony E-mount system. The lens has been specifically designed for full frame mirrorless cameras and is therefore relatively compact and lightweight compared to traditional DSLR lenses in this category.