Feature:
Thread: 4/5x1/36"
Magnification NA WD(mm)
 Focus(mm) Resolution(mm) DF(mm)  Object field of view(mm)  Image field of view（mm)）
5X 0.12
 23.6
 36 2.8 42.9 5 22.5
10X 0.25 17.8 18 1.34 10.1 2.5 22.5
20X 0.4 10.4 9 0.8
 3.5 1.25 22.5
50X 0.55 7 3.6 0.61 1.4 0.5 22.5
100X 0.8 3.2 1.8 0.41 0.6 0.25 22.5

Connecting thread: international standard interface "4/5 inch * 1/36 inch", diameter M20*0.705MM 
The external thread has a diameter of 20 mm and a pitch of 0.705 mm. 
The lens diameter is 200mm, which can replace imported microscope objective, high-definition imaging, long working distance. 

Packing List: 1pc objective lens