从 DxOMark 量度的锐利度结果。这测试结果是基於 MTF (调製传递函数) 的测量,并给出了由透镜产生图像的清晰度的总体指标。测试与尼康 D7000 和佳能 7D 作比较。资料来源:DxOMark。
从 DxOMark 指标组得出的横向色差的结果。色差是失真的一种类型,从而导致图像内的色沿著边缘变化。测试与尼康 D7000 和佳能 7D 作比较。资料来源:DxOMark。
DxOMark 是一组测试以量度镜头和相机的性能和质量。这 DxOMark 评分是给镜头的整体评分。测试以尼康 D7000 和佳能 7D 作比较。资料来源:DxOMark。
从 DxOMark 指标组得出的失真效果。透镜的失真是指整个图像在放大中变化。更多的失真表示在图像中更多直线的不正确记录。测试与尼康 D7000 和佳能 7D 作比较。资料来源:DxOMark。
从 DxOMark 一套度量传送的结果。传送指的是光线通过所有透镜的玻璃元件而到达感光器的光量,以较低的 T 数值表示更多的光线。这是很重要的,因为较少的光线到达感光器可需要较高的 ISO 数值或较慢的快门速度。测试与尼康 D7000 和佳能 7D 作比较。资料来源:DxOMark。
从 DxOMark 指标组得出的晕影效果。晕影是指图像的亮度从中心朝向边缘的变化,从而导致角落在黑暗中。 “0” 数值的结果是完美的,图像没有暗角。测试与尼康 D7000 和佳能 7D 作比较。资料来源:DxOMark。
评论
Rick
10月 前
9 / 10
GREAT LENS for the MONEY
Rick
10月 前
9 / 10
The Sigma 100-400 lens I have is the Sony version, not the L-mount version. The camera I use it on is Sony A7RII. This lens (Sony version) works great providing you have sufficient light to work with but keep in mind that is the case with ALL lenses. I've taken photos indoors and find that the photos are just as sharp as my Sony 24-105 F/4.0 G lens. Outdoors in sufficient light even when cloudy the photos are great depending on how good you are at holding the camera and the right settings applied to any given situation. With plenty sunshine the photos are phenomenal. So, all in all, if all you're interested in is taking photographs and are on a budget this lens is great. Build quality is great. I have absolutely no problem with that. If you're the kind of person who beats up their lenses and abuses them then this may not be the lens for you; however, everyday normal wear and tear this lens is great. I've had mine for about a year now and have no problems with it whatsoever. I don't do video so I cannot give you any kind of worthwhile review but from what I understand this lens does ok with video, but it is not the best one out there if you are into videography. As for the weight I have had no problems carrying this lens around on lengthy hikes. Unlike many of the competition this lens is much lighter. This lens does not have a teleconverter. I'm told that the Sony teleconverter may work with it but the price of that teleconverter I am not willing to take the gamble. According to Sigma they have an agreement that they will not build one for the Sony E-mount version although they have one for the L-version. I contacted Sony and they couldn't tell me if their Sony teleconverter would work. I've also talked to other folks, and some say that it will work but not as good as expected. In such cases the teleconverter when attached produced photos that were either too smooth around the edges, too dark, or produced some other anomalies. They do not provide a tripod collar for this lens. I, for one, bought my lens second hand and it came with the collar.
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