Sigma 600mm F8 Mirror Lens
The Sigma 600mm f/8 is a 600mm f/8 lens designed for T-Mount mount cameras. Used copies start from $103.36 on GearFocus, with buyer protection on every purchase.
Sigma 600mm F8 Mirror Lens
Used Sigma 600mm f/8 Listings on GearFocus
Lens Overview — Sigma 600mm f/8
Key Features — Sigma 600mm f/8
600mm Prime Focal Length: Dedicated super telephoto reach for wildlife, sports, and distant subjects without the bulk of conventional long lenses.
Mirror Lens Construction: Catadioptric optical design folds the light path internally, enabling 600mm reach in an unusually compact and lightweight body.
320g Ultralight Body: Weighs just 320g, making it one of the lightest options available for 600mm super telephoto photography.
Fixed f/8 Aperture: No aperture ring is present — exposure is controlled entirely through camera settings, and light transmission is fixed at f/8.
Donut Bokeh Rendering: Mirror lens design produces the characteristic ring-shaped out-of-focus highlights associated with catadioptric optics.
Manual Focus Only: No autofocus motor is included, requiring careful manual focusing technique, especially when shooting moving subjects at this focal length.
Lens Specifications — Sigma 600mm f/8
| Spec | Detail |
|---|---|
| Use Cases | Wildlife, Sports, Birding |
| Lens Type | Super Telephoto |
| Format | Full Frame |
| Zoom/Prime | Prime |
| Focal Length | 600mm |
| Maximum Aperture | f/8 |
| Camera System | DSLR |
| Lens Mount | T-Mount |
| Autofocus | No |
| Focus Type | Manual |
| Image Stabilization | None |
| Weight | 320g |
Description — Sigma 600mm f/8
The Sigma 600mm f/8 Mirror Lens is a prime super telephoto lens built for full frame DSLR systems via a T-Mount interface. Weighing just 320g, it achieves a 600mm focal length in a surprisingly compact and portable package thanks to its mirror-based optical design, which folds the light path to reduce physical length. The lens operates at a fixed f/8 maximum aperture with manual focus only — there is no autofocus system or aperture adjustment. Image stabilization is absent, so steady technique or physical support is important when shooting at this focal length.
Classified as a Special Effect type lens, the mirror design produces a rendering character distinct from conventional telephoto optics. The T-Mount system means this lens requires a camera-specific adapter, but also makes it broadly usable across many DSLR platforms. For photographers seeking an ultra-lightweight 600mm option with full frame coverage, this lens offers a uniquely portable solution.
Pros — Sigma 600mm f/8
- ✓Exceptionally lightweight at just 320g for a 600mm prime lens
- ✓Full frame coverage at 600mm focal length
- ✓T-Mount interface allows broad DSLR system compatibility with appropriate adapters
Cons — Sigma 600mm f/8
- ✗Fixed f/8 maximum aperture limits light gathering and depth-of-field control
- ✗Manual focus only — no autofocus support
- ✗No image stabilization, making handheld shooting at 600mm challenging
Reviews — Sigma 600mm f/8
Videos — Sigma 600mm f/8
Sigma 600mm Mirror Lens Review and Real World Test | Best cheap super telephoto lens for Mirrorless? — Illuminationsfromtheattic
Frequently Asked Questions — Sigma 600mm f/8
What camera systems is this lens compatible with?+
The Sigma 600mm f/8 Mirror Lens uses a T-Mount interface, which is a universal thread standard. It can be used on a wide range of DSLR camera bodies by pairing it with the appropriate T-Mount adapter for your specific camera system. It is designed for full frame DSLRs.
Does this lens have autofocus?+
No. This lens is manual focus only. There is no autofocus mechanism, so the photographer must focus entirely by hand. This is an important consideration for fast-moving subjects at 600mm.
How heavy is this lens?+
The lens weighs 320g, which is notably light for a 600mm prime super telephoto. This makes it more portable than conventional 600mm lenses, though support is still recommended given the focal length.
Can I adjust the aperture on this lens?+
The lens has a fixed maximum aperture of f/8. Mirror lens designs typically do not feature a variable aperture, so exposure control is handled through your camera's shutter speed and ISO settings rather than the lens aperture.
Does this lens have image stabilization?+
No, image stabilization is not present on this lens. At 600mm, using a tripod or other stable support is strongly advisable to achieve sharp images.
What filter thread size does this lens use?+
The filter thread size is not specified in the available product data. It is recommended to check the physical lens or consult the manufacturer directly before purchasing filters for this lens.