Suitable Objectives - Conrad 75 17 50 Bedienungsanleitung

6. Suitable objectives

A C or CS model must be used as an objective. They must not go out over the
casing front by more than the following:
1 C-Objective
2 10 mm or less
When the above threshold values are not complied with, the
device may be damaged.
The camera is suitable for direct connection of a CS objective.
Where C objectives are used, the included adapter ring must be
attached to the camera before attaching the objective.
24
3 CS-Objective
4 6 mm or less