n. 望远倍率镜
1.Palmer made this digital photo with a 500mm lens and a 1.4x teleconverter.
帕默用500毫米镜头和1.4倍的望远倍率镜拍摄的这张照片。
2.Palmer made this digital photo with a 500mm lens and a 1.4x teleconverter.
帕默用500毫米镜头和1.4倍的望远倍率镜拍摄的这张照片。
3.Improved the focusing accuracy when using the EC-20 Teleconverter.
改进了对焦准确时，用欧共体20个镜头。