1911年，蔡司产品实现了柯勒提出的在一台显微镜上所有物镜齐焦的想法。也就是，当从一个物镜转换另一个物镜后，图像依旧在焦面上。
In 1911, Zeiss implements Köhler's idea of parfocalizing all objectives used on a microscope, which means that the image remains in focus when the observer exchanges one objective for another.
蔡司照相机目镜，由蔡司专为观鸟镜系列制造的可同时捕获数字式图片的装备！
Zeiss Camera Eyepiece DC4 For Diascope Spotting Scopes by Carl Zeiss Observe and Capture Digital Pictures at the Same Time!
蔡司照相机目镜，由蔡司专为观鸟镜系列制造的可同时捕获数字式图片的装备！
Zeiss Camera Eyepiece DC4 For Diascope Spotting Scopes by Carl Zeiss Observe and Capture Digital Pictures at the Same Time!
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