There is no rubber armor nor are there any covers to protect the objectivelenses.
这两种望远镜均没有橡胶铠装，也没有提供用于保护物镜的物镜盖。
2
I'm also somewhat mystified at Pentax's failure to provide lens caps for the objectivelenses.
另一样令我不解的是为何宾得不给物镜也配上镜头盖呢？
3
These cameras have the capability of wide temperature ranges and often include a variety of objectivelenses in order to appropriately adjust the field-of-view.