Starblitz 500mm f/8 Lens — Specs, Reviews, Used Prices

Starblitz 500mm f/8 MC Mirror Lens

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Lens Overview — Starblitz 500mm f/8

The Starblitz 500mm f/8 MC Mirror Lens is a prime telephoto lens built around a mirror (catadioptric) optical design, offering a fixed focal length of 500mm with a maximum aperture of f/8. Designed for full-frame camera systems, this lens connects via a T-Mount, which allows it to be adapted to a wide range of DSLR camera bodies using the appropriate T-ring adapter for your specific system. At 705g, it delivers a relatively manageable weight for a 500mm telephoto, which is a characteristic advantage of mirror-based designs.

Focus is entirely manual, with no autofocus capability, so shooters will need to rely on their camera's manual focus aids. There is no image stabilization, meaning a stable platform such as a tripod or monopod is strongly recommended at this focal length. The lens accepts 72mm front filters, giving photographers the ability to use standard circular filters.

The fixed f/8 aperture is inherent to the mirror lens design and cannot be adjusted — there is no aperture ring or variable diaphragm. This makes exposure control dependent on shutter speed and ISO settings on the camera body. Its full-frame coverage means it can be used on both full-frame and crop-sensor DSLR bodies without vignetting concerns on the former.

Key Features — Starblitz 500mm f/8

500mm Prime Focal Length: Fixed 500mm field of view provides strong telephoto reach for wildlife, sports, and astronomical subjects.

Catadioptric Mirror Design: Uses a folded mirror optical path instead of a traditional refractive design, keeping the lens compact and lightweight relative to its focal length.

Fixed f/8 Aperture: The mirror design uses no aperture diaphragm, so exposure must be controlled entirely through shutter speed and ISO on the camera body.

T-Mount Compatibility: Attaches to a wide range of camera systems using the appropriate T-ring adapter, making it usable across Canon, Nikon, Pentax, and other mounts.

Full-Frame Coverage: Image circle covers full-frame sensors without vignetting, and the lens can also be used on crop-sensor bodies.

Manual Focus Only: No autofocus mechanism is present, so accurate focus requires use of your camera's manual focus aids such as live view magnification or focus confirmation.

Lens Specifications — Starblitz 500mm f/8

Starblitz 500mm f/8 full specifications
Spec	Detail
Use Cases	Wildlife, 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	72mm
Weight	705g

Description — Starblitz 500mm f/8

The Starblitz 500mm f/8 MC Mirror Lens is a 500mm prime telephoto built on a mirror (catadioptric) optical design. It operates at a fixed f/8 aperture — a defining characteristic of mirror lenses — with no variable diaphragm. The lens is designed for full-frame coverage, making it compatible with both full-frame and APS-C DSLR bodies without image circle concerns.

Weighing in at 705g, it is notably compact for its focal length class. Mounting is via T-Mount, the universal adapter thread system that requires a body-specific T-ring to attach to your DSLR. Focus is fully manual with no autofocus mechanism, and there is no image stabilization, so a stable support system is highly recommended when shooting at this focal length.

A 72mm filter thread at the front accepts standard circular filters. This lens is classified as a Special Effect type within its category, reflecting the unique rendering characteristics associated with mirror lens designs.

Pros — Starblitz 500mm f/8

✓Fixed 500mm focal length delivers substantial telephoto reach for a prime lens
✓Full-frame coverage (lensFormat: Full Frame) ensures compatibility with both full-frame and crop-sensor DSLRs
✓Relatively lightweight at 705g for a 500mm telephoto lens
✓72mm filter thread size supports widely available standard circular filters
✓T-Mount system allows adaptation to numerous DSLR camera systems via T-ring adapters

Cons — Starblitz 500mm f/8

✗Fixed f/8 aperture cannot be adjusted, limiting exposure control to shutter speed and ISO
✗Manual focus only with no autofocus support, which can be challenging at 500mm
✗No image stabilization, making a tripod or monopod essential for sharp results
✗T-Mount requires a separate adapter ring to mount on any specific camera body
✗Fixed aperture mirror design typically produces distinctive donut-shaped bokeh that may not suit all shooting styles

Videos — Starblitz 500mm f/8

Russian MTO 500 'Mirror' lens — Peter Elgar

Resources & Downloads — Starblitz 500mm f/8

Manuals & Guides

User Manual
PDF · 9.0 MB

Frequently Asked Questions — Starblitz 500mm f/8

What cameras is this lens compatible with?+

The Starblitz 500mm f/8 uses a T-Mount, which is a universal adapter system. To attach it to a specific DSLR body, you will need a T-ring adapter for your camera brand — these are sold separately. The lens is categorized for DSLR camera systems and provides full-frame coverage.

Can I use autofocus with this lens?+

No. This lens is manual focus only — the autoFocus specification is explicitly false. You will need to focus by hand using the lens's focus ring, aided by your camera body's focus confirmation or live view magnification tools.

Can I adjust the aperture on this lens?+

No. The maximum and only aperture is f/8, which is fixed by the mirror lens design. There is no aperture ring or diaphragm blades to adjust, so exposure must be managed through your camera body's shutter speed and ISO settings.

What filter size does this lens use?+

The Starblitz 500mm f/8 has a 72mm front filter thread, allowing you to use standard 72mm screw-in filters such as ND or polarizing filters.

Does this lens have image stabilization?+

No, image stabilization is listed as None in the specifications. At 500mm, a sturdy tripod or monopod is strongly recommended to avoid camera shake and achieve sharp images.

How heavy is this lens?+

The lens weighs 705g, which is relatively light for a 500mm telephoto prime — a benefit of the mirror optical construction.