500mm · f/8
The StarLens 500 mm f/8 reflex lens is a catadioptric design with zero chromatic aberration, offering a compact package for high focal length. Its optical strengths include a robust primary mirror that resists warping and multicoated surfaces. Weaknesses typical of mirror lenses, such as low contrast and donut bokeh, are noted. Build quality is solid, with a simple 5-element design. It suits astrophotographers and those needing a lightweight, affordable super-telephoto, but not for general use due to its fixed aperture and unique rendering.