回答
来看看严谨的德国人对此镜头的评价Small and light-weight， affordable and， yes， bitingly sharp， at least stopped down. 小型， 轻量， 低价， 而且锐度很高(收缩光圈之后)Wide open， the lens lacks both contrast and sharpness， especially towards the borders and corners.全开光圈下对比度和锐度会下降很多， 尤其是边缘画质CAs are moderate and distortion actually very well controlled though. 色散控制和畸变还是很不错的The lens' main weakness is its bokeh which is somewhat unpleasant.最大的问题在于焦外的虚化效果很不好(令人不舒服)The build quality is good， but nothing to rave about.If you can live with the bokeh quality， the lens is no doubt a no-brainer， especially given its very moderate price. 做工很不错， 如果你能接受它的郊外虚化效果的话， 那么性价比很高Those wanting better bokeh quality should get the newer AF-S version of the lens instead， which also offer better resolution towards the image borders and corners.比较在意虚化效果的人建议买别的镜头.
