"A great budget lens for astrophotography, the sharpness produced at f/1.8 and f/2.8 is exactly what you want." Viltrox AF 16mm f/1.8 FE lens review
The Viltrox AF 16mm f/1.8 FE is an impressive ultra-wide-angle prime lens offering great handling, build quality and image quality for an affordable price.
Source：Space.com
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