출처:http://slrgear.com/reviews/showproduct.php?product=1786

Sharpness 
Our review sample of this lens proved to be exceptionally sharp, even when used at its widest aperture setting of ƒ/2.8. When used on the NEX-7 with its APS-C sensor, the images shot were tack-sharp from ƒ/2.8 onward. Mounted on the full-frame A7R, there's a trace of corner softness at ƒ/2.8, but stopping down to ƒ/5.6 provided incrementally better corner sharpness until it became tack-sharp.

Diffraction limiting begins at ƒ/11, but you'll be hard-press to notice any impact on sharpness until ƒ/16, where generalized softness begins to set in.

샤프니스

개방에서도 아주 샤프하다.크롭 바디인 NEX-7에서는 f2.8부터 쨍하다.풀 프레임 바디인 A7R에서는 주변부에서 미세하게 소프트한 면이 있지만 f5.6에서는 주변부까지 샤프해진다.

f11에서 회절이 보이기 시작하지만 미미하며 f16에서는 확실히 티가 난다.

Conclusion 
It's a pricey lens, but right now it's the only E-mount option that works out-of-the-box for macro photography. It might be expensive, but you get an exceptionally sharp lens with some great features - certainly, worth the investment.

결론

비싸지만 소니 E 마운트 마크로 렌즈에선 대안이 없다.

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