Lenses are not included with the cased model cameras.
|Selecting a lens for your camera||Knowledge Base Article 10694|
|C-mount models||CS-mount models|
|BFS-PGE-13Y3 / BFS-U3-13Y3||BFS-PGE-04S2 / BFS-U3-04S2|
|BFS-PGE-31S4 / BFS-U3-31S4||BFS-PGE-16S2 / BFS-U3-16S2|
|BFS-PGE-23S3 / BFS-U3-23S3||BFS-PGE-120S4 / BFS-U3-120S4|
|BFS-PGE-50S5 / BFS-U3-50S5|
|BFS-PGE-51S5 / BFS-U3-51S5|
|BFS-PGE-88S6 / BFS-U3-88S6|
|BFS-PGE-122S6 / BFS-U3-122S6|
|BFS-PGE-200S6 / BFS-U3-200S6|
Correct focus cannot be achieved using a CS-mount lens on a C-mount camera.
Example C-mount Cross Section
Back Flange Distance
The Back Flange Distance (BFD) is offset due to the presence of both a 1 mm infrared cutoff (IRC) filter and a 0.5 mm sensor package window. These two pieces of glass fit between the lens and the sensor image plane. The IRC filter is installed on color cameras. In monochrome cameras, it is a transparent piece of glass. The sensor package window is installed by the sensor manufacturer. Both components cause refraction, which requires some offset in flange back distance to correct.
The resulting C-mount BFD is 17.99 mm.
The resulting CS-mount BFD is 12.52 mm.
For more information about the IRC filter, see Infrared Cut-Off Filters.
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