Pre-Owned - Bower 500mm F/8 Screw Mount

The Bower 500mm f/8 is a budget-friendly manual telephoto lens that uses a universal T-mount (screw thread) system. Because it uses this screw-on base, it can be adapted to almost any modern or vintage camera body using a simple T-mount adapter specific to your camera's mount (e.g., Canon EF, Nikon F, or Sony E).

Usage Highlights:

Full Manual Control: These lenses have no electronic pins. You must set your camera to Manual (M) mode and manually adjust focus and aperture on the lens barrel.

Tripod Essential: Due to the extreme 500mm focal length and slow f/8 aperture, using a tripod or monopod is highly recommended to avoid blurry images from camera shake.

Mirror Lens Bokeh: The mirror version produces unique "donut-shaped" bokeh in out-of-focus highlights due to its internal secondary mirror.

Versatility: These lenses can also be converted into handheld telescopes for terrestrial viewing or used for basic astrophotography when mounted on equatorial tracking mounts.