Rokinon Reflex 300mm f/6.3 ED UMC CS Lens for Fujifilm X Mount (Black)

Rokinon Reflex 300mm f/6.3 Fujifilm Telephoto Optic

The Rokinon Reflex 300mm f/6.3 ED UMC CS Lens for Fujifilm X Mount is a masterclass in super-telephoto engineering, providing X-Series professionals with a compact 300mm mirror lens Fujifilm solution. Engineered for maximum gear agility, this prime offers a massive 450mm equivalent perspective in a remarkably portable form factor. Its refined mirror-based optical path ensures that every long-distance project maintains extreme image integrity without the bulk of traditional telephoto glass.

Built with a sophisticated Cassegrain design featuring 9 elements in 9 groups, this lens technically eliminates chromatic aberrations while maintaining clinical sharpness. The fixed f/6.3 aperture enables exceptional deep depth of field for nature and wildlife photography, ensuring distant subjects are rendered with high contrast. Professional shooters value this specialized tool for its 450mm equivalent reach and rugged build, making it a cornerstone for professional wildlife documentation and expedition assignments across the USA.

Rokinon Reflex 300mm f/6.3 ED UMC CS Specifications

• Focal Length: 300mm (450mm 35mm equivalent).
• Maximum Aperture: f/6.3 fixed mirror design.
• Minimum Focus Distance: 2.95 ft (90 cm).
• Optical Design: 9 Elements in 9 Groups.
• Lens Mount: FUJIFILM X compatible (APS-C).
• Filter Size: 58 mm (Front) / 25.5 mm (Rear).
• Weight: 11.2 oz (318 g).
• Official 1-Year Limited USA Warranty.

Optical Craftsmanship and Mirror Logic

The technical definition using specialized extra-low dispersion (ED) glass reduces chromatic aberrations effectively at extreme focal lengths. This benefit ensures the edge-to-edge image sharpness and realistic color required for high-resolution wildlife and surveillance documentation. Nature specialists benefit from this 9-element construction by achieving high micro-contrast and realistic textures in distant environments during intense field sessions.

Ergonomic Build Chassis and Portability

The lens weighs only 11.2 oz (318 g) with a remarkably compact barrel design that fits in the palm of your hand. This robust tactile mirrorless build adds durability for rapid field deployment in remote locations where heavy equipment is a significant drawback. Professional expedition photographers value this discreet profile when documenting subjects in demanding conditions where gear weight is paramount for success.

AF/Stabilization Logic and Manual Control

The tactile manual focus ring provides smooth and silent focusing for critical subject tracking in long-distance stills and video. This benefit improves the precision manual focusing workflow for photographers who require absolute control over the focal plane during nature sessions. Advanced shooters benefit from the long focus throw, allowing for precise creative adjustments in dynamic work settings on location.

Field Deployment and Wildlife Utility

The expansive 450mm equivalent reach supports specialized shooting tasks for professional photographers seeking to isolate distant wildlife or architectural details. This setup reduces the pain point of lens size by providing the immersive magnification depth required for high-resolution portfolios. Outdoor specialists thrive with this optical setup when documenting fleeting moments in the field for high-end professional galleries.

Maintenance Protocol and Care

Routine cleaning prevents smudge damage on the multi-coated front element, ensuring maximum optical contrast and light transmission for the sensor. Storage in humidity-controlled environments keeps the internal mirror surfaces and high-index optics pristine for years of reliable service. Pro Tip: Use a high-quality monopod to stabilize the narrow angle of view for critical sharpness during high-magnification telephoto sessions.