Samyang / Rokinon Reflex 300mm F6.3 ED UMC CS

Focal length: 300 mm
Aperture: f/6.3
Weight: 320 g
Filter diameter: 58 mm
Min. focus distance: 90 cm
Length: 74.1 mm

At a Glance

Made for Fujifilm X, this mirror lens provides 300 mm, which works out to about 450 mm full-frame equivalent on APS-C. It weighs just 320 g and is compact. The aperture is fixed at f/6.3, it focuses down to 90 cm, and focusing is manual. Wildlife and birds are its natural subjects.

Good for

Wildlife
Birds

Worth knowing

No autofocus: focusing is manual only.
Mirror lens: the aperture is fixed, exposure is set via shutter time and ISO.

Derived from the manufacturer data, not from our own tests. How we check

Technical Specifications

Min. focal length: 300 mm
Max. focal length: 300 mm
Max. aperture (min. zoom): f/6.3
Max. aperture (max. zoom): f/6.3
Min. aperture: f/6.3
Elements: 9
Groups: 9
Weight: 320 g (0.71 lb)
Filter diameter: 58 mm
Min. focus distance: 90 cm (35.43 in)
Length: 74.1 mm (2.92 in)
Diameter: 64.5 mm (2.54 in)

Manufacturer data: samyanglens.com

Last checked: October 13, 2026 (against the manufacturer data) · How we check

Simulate depth of field and angle of view

Compare with other lenses

Which cameras does the Samyang / Rokinon Reflex 300mm F6.3 ED UMC CS fit?

The Samyang / Rokinon Reflex 300mm F6.3 ED UMC CS fits all Fujifilm X-Mount cameras. There its field of view equals 450 mm in full-frame terms (crop factor 1.5).

Fujifilm X-Mount cameras

APS-C:: Fujifilm X-T30 III,Fujifilm X-E5,Fujifilm X-M5,Fujifilm X-T50,Fujifilm X-S20,Fujifilm X-T5,Fujifilm X-H2,Fujifilm X-H2S,Fujifilm X-T30 II,Fujifilm X-E4,Fujifilm X-S10,Fujifilm X-T4,Fujifilm X-T200,Fujifilm X-Pro3,Fujifilm X-A7,Fujifilm X-T30,Fujifilm X-T3,Fujifilm X-T100,Fujifilm X-H1,Fujifilm X-A5,Fujifilm X-E3,Fujifilm X-T20,Fujifilm X-A10,Fujifilm X-A3,Fujifilm X-T2,Fujifilm X-E2S,Fujifilm X-Pro2,Fujifilm X-T1 IR,Fujifilm X-T10,Fujifilm X-A2,Fujifilm X-T1,Fujifilm X-E2,Fujifilm X-A1,Fujifilm X-M1,Fujifilm X-E1,Fujifilm X-Pro1