As we’ve not had the opportunity to analyze that many wide-angle lenses with the A77, we thought listing the two ultra-wide zooms we had seen together with the three wide primes in our database would help put the optical performance in perspective.
|Carl Zeiss Distagon T* 2/24 ZA Sony||1250||18||10|
|Sony 28mm F2.8||270||15||11|
|Sony 20mm F2.8||730||14||11|
|Tokina AT-X 11-16 PRO DX Sony||659||14||8|
|Sigma 8-16mm F4.5-5.6 DC HSM Sony||699||11||7|
Both the 20mm and 28mm film era lenses are, unsurprisingly, eclipsed by the modern design of the Sony Zeiss Distagon T* 24mm f2.0. Sharpness isn’t quite as high as we expected on the A77 but this is a top-tier lens with excellent aberration correction. However, as a full-frame lens it’s the equivalent of a not-so wide 35mm.
Unsurprisingly, the Tokina AT-X 116 Pro DX is ahead of the Sigma 8-16mm f4.5-5.6 overall but both are appealing for the capabilities.
The Sigma is particularly tempting given the extraordinarily wide angle of view but sharpness is low and, even then, mainly restricted to the center regardless of focal length.