Get as close as 4" to your subject and get everything in the frame with a very wide angle of coverage with this Ultra-Wide-Angle Dome Lens for Micro-Series and RM4K from SeaLife. Depth rated for 200', this 0.7x magnification lens is designed for edge-to-edge sharpness and minimal barrel distortion. The optics are fully multi-coated for optimal light transmission, and the lens can easily be mounted and removed underwater.