Minolta's ultra-wide for A-mount — the AF 20mm f/2.8 for wide-angle photography.
The Minolta AF 20mm f/2.8 is an ultra-wide prime for Minolta A-mount from the early AF era. At 20mm f/2.8 on full frame, it provides a dramatic 94-degree field of view. One of the earliest AF ultra-wide primes available. The compact design maintains the Minolta tradition of reasonable lens sizes.
Optical performance is decent for the era. Sharpness is acceptable when stopped down. The f/2.8 speed at 20mm was useful for the era's landscape and architectural photography. Distortion is moderate. Colour rendition has the warm Minolta character. Benefits from Sony body SteadyShot stabilisation on compatible A-mount bodies.
Minolta A mount (Sony A compatible). Filter thread is 72mm. Weight is approximately 285 grams — compact for 20mm. Build quality is solid. Screw-drive AF. The A-mount system is discontinued but adapts to Sony E-mount via LA-EA adapters. Benefits from body-based stabilisation.
Very affordable. Check AF and optics. A budget ultra-wide for A-mount. The f/2.8 at 20mm provides useful speed. Superseded by dramatic modern improvements. Only of interest at very low prices or for A-mount system completion. Adapts to E-mount for affordable ultra-wide reach.