Arcturus C Mount to Micro 4/3 Mount Lens Adapter

A C-mount to Micro Four Thirds (MFT) lens adapter is a mechanical device used to mount C-mount lenses onto Micro Four Thirds camera bodies. Here's what you need to know about it:

1. Mounting Mechanism: The adapter typically features a C-mount on one side and a Micro Four Thirds mount on the other. The C-mount side attaches to the lens, while the Micro Four Thirds side attaches to the camera body. It may include a locking mechanism to ensure a secure connection between the lens and the adapter.

2. Focusing: Since C-mount lenses were designed for different systems, there may be limitations when using them on Micro Four Thirds cameras. Some lenses may not cover the entire sensor area, resulting in vignetting or reduced image quality. Additionally, manual focusing may be required, as many C-mount lenses do not have autofocus capabilities.

3. Crop Factor: Micro Four Thirds cameras have a smaller sensor size compared to 35mm film or full-frame digital cameras. This results in a crop factor of around 2x when using C-mount lenses on Micro Four Thirds cameras. For example, a 25mm C-mount lens would have a field of view equivalent to a 50mm lens on a full-frame camera.

4. Adaptation Possibilities: The adapter not only allows you to use C-mount lenses on Micro Four Thirds cameras but also opens up the possibility of using other lens types with C-mount adapters, such as CS-mount lenses (a variant of C-mount used in security cameras) or even lenses from other systems with additional adapters.