The Vivitek GB940G Standard Zoom Lens offers a great balance of aperture and focal length for excellent imaging. With an aperture range of F1.7 - 1.9 and a focal length from 26mm to 34mm, it can meet various shooting needs.

Using this Vivitek GB940G Standard Zoom Lens is easy. First, attach it securely to your camera. You can then adjust the zoom to get the desired focal length from 26mm to 34mm according to your shooting object and scene. For the best results, pay attention to the lighting conditions and adjust the aperture within the F1.7 - 1.9 range. When not in use, store the lens in a dry and clean place. Avoid exposing it to extreme temperatures and humidity. Clean the lens regularly with a soft, lint - free cloth to keep it in good condition.