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尼康为Z系列引进了14-30毫米F/4超广角镜头。_我的网站
A | 据国外媒体Peta Pixel报道，尼康昨天推出了一款新的Nikkor Z 14-30mm f/4s镜头，这是尼康Z系列全帧无反光相机系统的首款超广角变焦镜头。
B | 这一最新的S线镍镜头是一个流行的选择景观，旅游，事件和建筑摄影师，提供了性能和便携性的结合，只有尼康的革命性的新Z山才能实现。 Researchers from China and the UK have solved the mystery surrounding Saccorhytus coronaries – a millimeter-long spiny creature that was found in 2017 and believed to have inhabited oceans 500 million years ago. The veil of mystery over the critter persisted for years, as the scientists could not locate the creature’s anus. Turns out – they should not have even tried.,The critter was originally determined to be a member of a deuterostomes group of animals - the ancestors to the modern vertebrates (including humans). However, scientists' latest research suggests that it actually belongs to another group called ecdysozoans – the predecessors of the modern spiders and various insects. As it turned out, the whole mishap happened over the creature's anus – or rather lack thereof.,Ecdysozoans normally have an anus and hence the critter was initially ruled not to belong to them. But, upon closer discovery using x-rays, scientists saw it resembles ecdysozoans internally more than the ancestors of the vertebrates.,Like them, Saccorhytus has a large mouth and also features tiny holes around it that served as bases for spines that kept the critter anchored in one place. Those holes also served as a source of confusion as they were originally believed to be gills – another mark of the proto-vertebrates.,'Ugliest I've Ever Seen': Fisherman Shares Pic of Mysterious Creature He Found in Australia29 June, 13:17 GMT,As to Saccorhytus' absence of anus, scientists are yet to find out what happened to it. One theory suggests that there was an even earlier representative of ecdysozoans that has not been discovered, but did not have an anus.,Another theory goes that Saccorhytus did not actually need one.,"It could be that it lost it during its own evolution - perhaps it didn't need one because it could just sit in one spot with one opening for everything," Emily Carlisle, one of the researchers, said.。
C | 尼康说，该镜头的新光学设计充分利用了Z座的大直径，以提高光学性能和优化高像素相机。虽然透镜的宽度为14毫米，但它的前部部件几乎是平的，这使得它成为第一个覆盖14毫米的超广角变焦透镜。过滤器（支持82 mm旋转过滤器）可以安装在前面。
D | 这种镜头也是超轻和便携式的：它的长度只有3.5英寸（8.9厘米），重量只有1.07磅（485克）。与尼康16-35mm f/4Ged VR镜头相比，新款14-30mm镜头短32%，轻28.6%。与尼康14-24mm f/2.8g ED相比，新镜头短了35%，轻了51.5%。新的14-30毫米f/4s的其他特点和规格包括“不匹配的失真和色差控制”。尼康抗反射纳米晶涂层减少重影和闪光。氟涂层可防止灰尘/水/油脂/污垢。步进电机（STM）技术可实现平滑/快速/安静的自动对焦、可定制的控制环和优化的视频性能（减少对焦呼吸）。以下是使用新的14-30毫米镜头拍摄的一些样品照片：新的镍Z 14-30毫米F/4S镜头将在2019年春季以1300美元（约8878元）的价格出售。
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