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As you can see from the image above the size different between the new Sony A7rII + [shoplink 57167]Batis 135mm f/2.8[/shoplink] and the Canon 5Dr + [shoplink 57168]Sigma 135mm f/1.8[/shoplink] are small.
In Zeiss defense we have to add: The Batis has weather sealing, in lens stabilization and more importantly it weights almost half as much as the Sigma!
Preorders:
Zeiss Batis 135mm f/2.8 lens at Adorama, Bhphoto, PhotoPorstNeuwied and ParkCameras.
Zeiss Batis 135mm lens shade at Adorama and Bhphoto.