增距镜也称为增倍镜。对于这种加装在机身和镜头之间的光学附件,人们褒贬不一:有人把它当做秘密武器,将镜头焦距轻松延长;更多的人视之为鸡肋,认为它会明显降低成像质量。我们邀请了几位擅长使用增距镜的摄影师进行了拍摄实验,来探究一下这种光学附件到底有多大实用价值。他们的拍摄结果不尽相同:有的不出人们所料,镜头加上增距镜后像质明显下降;然而,也有的测试结果大大出乎预料, Teleconverter also known as magnification mirror. People admire the addition of optical attachments between the body and the lens: some regard it as a secret weapon that easily lengthens the focal length of the lens; more people regard it as a tasteless one and consider it to significantly reduce image quality . We invited several photographers who are good at using teleconverters to conduct shooting experiments to explore the practical value of this kind of optical attachment in the end. Their results are not the same: some are not as expected, the lens plus the lens after the image quality decreased significantly; However, some test results were greatly unexpected,