If
there is one thing in this universe that is more rare than gold, it is a
positive review of this particular lens. Now I don't know if I just got
lucky and got a good sample. But this has been a GREAT lens for me.
Sharpness is actually REALLY good. Now one of the BIG complaints of this
lens is poor edge sharpness. But I have not found this to be a severe
problem - especially when stopped down somewhat. And, since a lens of
this focal length is more likely to be used for scenics or arcitectural
use than action shots, this isn't the end of the world.
But there is more going for this lens than sharpness. Distortions are VERY low for a lens of this focal length. You are NOT going to get anything nearly as good from a zoom. Also, color saturation and contrast are EXCELLENT - FAR better than, say, an EF-S 17-85mm lens. Colors REALLY come alive with this lens compared to most zooms. And chromatic aberrations are all but non-existant.
Construction also seems to be solid on my lens. The materials seem to be of good quality. The focus ring doesn't wobble much. And nothing external actually extends during focusing. This last fact is a REAL plus in outdoor environments, since an extending element creates low pressure in the lens (which can suck in dusty air).
I really have only two complaints about this lens. One it the price, which is somewhat on the high side. I personally got mine used for less. But $400+ is kind of alot to pay for a consumer grade lens. On the other hand, price is maybe not too bad, given the good overall quality of this lens. My other complaint is vignetting at large apertures. Simply put, vignetting is VERY noticeable at f/2.8 - even on an APS-C camera. I can only imagine how it might look on a full-frame camera. In fact, the vignetting makes this lens virtually unusable at f/2.8 in many situations. Of course, this gets better when you stop the lens down. At f/4, vignetting is no longer a problem. But the fact that f/2.8 is not nearly as usable as it could be is somewhat of a downer.
Of course, much like the edge sharpness issue, this is not the end of the world. And at the end of the day, you can still take some REALLY good pictures with this lens.
But there is more going for this lens than sharpness. Distortions are VERY low for a lens of this focal length. You are NOT going to get anything nearly as good from a zoom. Also, color saturation and contrast are EXCELLENT - FAR better than, say, an EF-S 17-85mm lens. Colors REALLY come alive with this lens compared to most zooms. And chromatic aberrations are all but non-existant.
Construction also seems to be solid on my lens. The materials seem to be of good quality. The focus ring doesn't wobble much. And nothing external actually extends during focusing. This last fact is a REAL plus in outdoor environments, since an extending element creates low pressure in the lens (which can suck in dusty air).
I really have only two complaints about this lens. One it the price, which is somewhat on the high side. I personally got mine used for less. But $400+ is kind of alot to pay for a consumer grade lens. On the other hand, price is maybe not too bad, given the good overall quality of this lens. My other complaint is vignetting at large apertures. Simply put, vignetting is VERY noticeable at f/2.8 - even on an APS-C camera. I can only imagine how it might look on a full-frame camera. In fact, the vignetting makes this lens virtually unusable at f/2.8 in many situations. Of course, this gets better when you stop the lens down. At f/4, vignetting is no longer a problem. But the fact that f/2.8 is not nearly as usable as it could be is somewhat of a downer.
Of course, much like the edge sharpness issue, this is not the end of the world. And at the end of the day, you can still take some REALLY good pictures with this lens.
More Review : http://camera.babybi.com/detail.php?id_detail=47
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