The sale of the new Tokina FíRIN 20mm f/2 FE AF lens for full-frame Sony E-mount is expected to start on April 6th according to Nokishita. Look for the US pricing of the lens at B&H (not available at the time of this post).
Here are the Tokina FíRIN 20mm f/2 FE AF lens specifications (this new lens is the second version and comes with AF, the previous $699 model was only MF):
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