Bower 500mm f/8 Preset MF Telephoto Lens with T-Mount
The Bower 500mm f/8 is a 500mm f/8 lens designed for T-Mount mount cameras. Check GearFocus for current availability, with buyer protection on every purchase.

Bower 500mm f/8 Preset MF Telephoto Lens with T-Mount
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Lens Overview — Bower 500mm f/8
Key Features — Bower 500mm f/8
500mm Prime Focal Length: Fixed super telephoto reach suited for distant subjects like wildlife, birds, and celestial photography.
T-Mount Compatibility: Universal T-Mount interface allows the lens to be adapted to virtually any DSLR camera system with the appropriate mount adapter.
Full-Frame Coverage: Image circle covers full-frame sensors, making it usable on both full-frame and crop-sensor DSLR bodies.
Manual Focus Only: Preset-style manual focus ring requires hands-on focusing, which demands practice at 500mm where depth of field is very shallow.
f/8 Maximum Aperture: Fixed maximum aperture of f/8 means the lens performs best in bright outdoor conditions or when mounted on a tripod with adjusted exposure settings.
Included Tripod Ring: Attached tripod collar helps balance the lens properly on a support system, which is strongly recommended given the focal length and lack of stabilization.
Lens Specifications — Bower 500mm f/8
| Spec | Detail |
|---|---|
| Use Cases | Wildlife, Birding, Astrophotography, Sports |
| Lens Type | Telephoto |
| Format | Full Frame |
| Zoom/Prime | Prime |
| Focal Length | 500mm |
| Maximum Aperture | f/8 |
| Camera System | DSLR |
| Lens Mount | T-Mount |
| Autofocus | No |
| Focus Type | Manual |
| Image Stabilization | None |
| Filter Thread | 30.5mm |
Description — Bower 500mm f/8
The Bower 500mm f/8 Preset MF Telephoto Lens offers a 500mm fixed focal length in the super telephoto range, purpose-built for DSLR camera systems. It connects via a T-Mount interface, allowing photographers to adapt it to a broad range of camera bodies with the correct mount adapter. The lens covers a Full Frame image circle, making it suitable for both full-frame and smaller sensor DSLR bodies.
With a maximum aperture of f/8, the lens works best in good lighting conditions, and its manual focus operation means the photographer has full control over focus adjustments. There is no image stabilization, so an included tripod ring is a welcome practical feature for keeping shots sharp at this focal length. Weighing just 480g, it stays relatively light for its class.
A 30.5mm filter thread accommodates compatible filter accessories.
Pros — Bower 500mm f/8
- ✓500mm super telephoto prime focal length opens up long-range shooting opportunities
- ✓T-Mount design enables use across a wide range of DSLR camera systems with appropriate adapters
- ✓Full Frame format coverage means it can be used on both full-frame and smaller sensor bodies
Cons — Bower 500mm f/8
- ✗Maximum aperture of f/8 limits light-gathering ability, restricting use in lower-light conditions
- ✗Manual focus only with no autofocus capability, demanding more skill and time to achieve sharp results
- ✗No image stabilization, making handheld shooting at 500mm particularly challenging
Reviews — Bower 500mm f/8
Videos — Bower 500mm f/8
The CHEAPEST 500mm Lens for WILDLIFE - How Good Can it be? — Olle Nilsson