Photographyblog posted the full Loxia 21mm lens review and writes:
The Zeiss Loxia 21mm F2.8 is an exceptional wide-angle prime lens. You’d expect sharpness to be high across the frame from such a premium optic, and it doesn’t disappoint. As with its older brethren, if you can learn to love the manual-focus only nature of this lens, the Zeiss Loxia 21mm F2.8 is a superb wide-angle optic for full-frame E-Mount Sony owners.