Some producers have integrated a preliminary optical lens system in the C-Mount of their microscopes. The C-Mount connection has originally been designed for CCD video cameras without integrated optics. The function of this lens system is to project directly a temporary picture onto the chip of the video camera through using the integrated C-Mount optics.
Depending on the size of the CCD chips there are being offered different C-Mount lenses like e.g. C-Mount Adapter 1x, C-Mount Adapter 0,63x, C-Mount Adapter 0,50x or C-Mount Adapter 0,35x in order to illuminate perfectly the different video chips with the dimensions of 1”, 2/3”, ½” or 1/3”.
These C-Mount optics cause interferences when being used with digital cameras or camcorders in combination with all types of LM Digital Adapters and therefore must be removed. Otherwise they might cause a strong circular vignetting effect.
1" 1/2 " 1/3 "
Such C-Mounts with integrated optics are therefore not suitable for the connection of digital cameras and must be replaced by C-Mounts without integrated optics (1x C-Mount)
