Standard product images and eye candy (additional product images) have been added to the following lens pages:
Tokina 11-20mm f/2.8 AT-X Pro DX Lens
Tokina 24-70mm f/2.8 AT-X Pro FX Lens
Zeiss 21mm f/2.8 Milvus Lens
Zeiss 50mm f/1.4 Milvus Lens
Zeiss 100mm f/2M Milvus Lens
Many interesting comparisons can be made. I'll get you started:
Tokina 11-20mm, Sigma 10-20mm and Canon 10-22mm Lenses
Tokina 24-70mm, Canon 24-70mm and Nikon 24-70mm f/2.8 Lenses
Zeiss 21mm, Canon 24mm and Nikon 24mm f/1.4 lenses
Zeiss Milvus 21mm, Sigma 24mm and Zeiss 21mm Lenses
Zeiss, Canon and Nikon 50mm f/1.4 Lenses
Zeiss 50mm f/1.4, Sigma 50mm f/1.4 and Tamron 45mm f/1.8 Lenses
Zeiss 100mm f/2 Milvus, Zeiss 100mm f/2 and Canon 100mm f/2.8L IS Lenses