MrTMan Offline Upload & Sell: Off
|
AGeoJO wrote:
How about a little bit of unrealistic expectations? This is a fast, moderate wide angle lens and it is not designed to be sharp all the way to the corners at wide open aperture and you may also be dealing with field curvature. This lens is just peachy for environmental portraits that I am using it for. I am perfectly happy with my first and only copy. My typical working aperture range is between f/1.4 and f/2.8 and I care less about the performance of this lens all the way to the corners, let alone to the extreme corners, as long as it is centered....Show more →
It's not a question of corner performance or field curvature. The most common problem that people complain about, and that I've encountered on a few of the copies I tried, is that the right side is substantially softer than the left side at larger apertures. We're not talking about a subtle difference that could be due to testing error, we're talking about something that's consistently and unambiguously noticeable in shot after shot.
I kept the best copy out of three or four I tried, but even then, peak sharpness on the right side can't match peak sharpness on the left side.(e.g. if I were to specifically focus on a subject on the right side, it's going to be softer than if I were to focus on a subject on the left side).
I've gotten great images from it, nonetheless, and I'd still rather have it in my kit than not have it in my kit. Although I generally try to keep my subject towards the center of the frame. Admittedly for an environmental portrait at f/1.4 with a subject that isn't towards the right edge, the issue isn't noticeable.
|