The Celestron X-Cel LX 3x Barlow Lens is primarily designed for use with eyepieces to triple the magnification for astronomical observations. However, it can also be used with cameras, but this would typically require additional adapters or accessories to connect the camera to the Barlow lens. Here are some key points to consider: - The Barlow lens is threaded to accept 1.25" filters and eyepieces, which suggests it is compatible with standard astronomical equipment. - To use it with a camera, you would need to ensure you have the appropriate adapters or T-threads to connect the camera to the 1.25" barrel of the Barlow lens. - The primary function and design are centered around enhancing eyepiece magnification, but with the right adapters, it can be adapted for camera use.

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