Samyang 50mm F/1.4 AS UMC Lens
For Pentax K Mount
The Samyang 50mm F/1.4 AS UMC is a normal prime designed for cameras with a Full-Frame sensor. This ultra-bright prime has a 50mm focal-length.
This prime can focus down to 45cm from the imaging plane. The lens is not capable of autofocus and so the focus-distance must always be manually adjusted via the focus-ring.
This version has a Pentax K lens mount. Follow this link for all current compatible digital cameras: Pentax K mount cameras with Full-Frame or smaller sensors. Samyang also made this lens available for Canon EF, Nikon F, Sony A, Sony E, Fujifilm X, Canon M, Four-Thirds, Micro Four-Thirds mounts.
Samyang 50mm F/1.4 AS UMC Specifications
|Brand||Samyang||Model||50mm F/1.4 AS UMC|
|Focal Length||50mm||View Angle||46°|
|Max Aperture||F/1.4||Min Aperture||F/22|
|Filter Size||77mm||Aperture Blades||8|
|Size (D x L)||82 x 73mm||Weight||510g|
|Tilt||N / A||Shift||N / A|
|Zoom Drive||Mechanic||Focus Drive||Manual Focus only|
|Zoom Mechanism||N / A||Focus Mechanism||N / A|
|Hood||Bayonet||Focus Motor||N / A|
Completely manual lens. Aperture must be operated manually. Manual focus only.
Similar Lenses For Pentax K Mount
Here are the newest lenses matching or exceeding major specifications of the Samyang 50mm F/1.4 AS UMC. They cover the same focal-range with a similar aperture and are available for the same lens mount and imaging circle coverage.
Irix Dragonfly 45mm F/1.4
Pentax HD D FA* 50mm F/1.4 SDM AW
Pentax FA 50mm F1.4
Samyang 50mm T/1.5 VDSLR AS UMC
Sigma 50mm F1.4 EX DG HSM
Pentax FA 43mm F1.9 Limited
Canon RF-Lens Info
Info on all Canon native RF-mount lenses added to the Canon EOS R5 preview.
Canon EOS R5 Preview
Preview of the Canon EOS R5 flagship Full-Frame Mirrorless with 45 MP sensor on a 5-axis stabilization system effective to 8-stops. First 8K video capable digital camera. 20 FPS electronic and 12 FPS mechanical drive.
Olympus OM-D E-M5 Mark III Review
Third-Generation OM-D that packs a 20 MP Four-Thirds CMOS on a 5-Axis Stabilization System. Fast 121-Point Phase-Detect AF, 30 FPS Continuous Drive, Cinema 4K Video and more in a weatherproof and freezeproof body. Features dual control-dials and a builtin 2.4 MP EVF with Eye-Start Sensor with 0.69X magnification and 100% coverage.
Olympus OM-D E-M1 Mark III Review
20 MP Micro Four-Thirds Mirrorless with 7-Stop 5-Axis Image-Stabilization, 121-Point Phase-Detect AF 30 FPS Continuous Drive and Cinema 4K capability in a weatherproof and freezeproof body with dual control-dials and dual SDXC memory card slots.
M.Zuiko 12-45mm F/4 PRO Review
A review of the M.Zuiko 12-45mm F/4 PRO added to the Olympus Premium Lens Roundup.
Peak Design Travel Tripod Review
Review of the unique Peak Design Travel Tripod with its own ballhead and the universal ballhead adapter.
Nikon Z-Mount DX Lens Roundup
Review of Nikon Z-Mount lenses for APS-C mirrorless digital cameras. Covers all current Z-mount DX lenses available.
Nikon Z50 Review
The first Nikon APS-C mirrorless is built around a 20 MP BSI-CMOS sensor with ISO 100-204800, 209-Point Phase-Detect AF, 11 FPS Drive and 4K Video capability. Compact body with dual control-dials and 2.4 MP 0.39" EVF with 0.68X magnification, 100% coverage and an Eye-Start Sensor.
Samyang 50mm F/1.4 Facts
|50mm Focal-Length||F/1.4 Constant Aperture|
|77mm Filter Thread||Manual Focus only|
|Pentax K Mount||1 Max Crop-Factor|
|510g Lens Weight||82 x 73mm (D x L)|
New Cameras & Lenses
Olympus M.Zuiko 100-400mm F/5-6.3 ISStabilization & Weatherproof
Micro Four-Thirds Mount Zoom
Olympus OM-D E-M10 Mark IV20 Megapixels Mirrorless
Micro Four-Thirds Lens Mount
Sony Alpha A7S III12 Megapixels Mirrorless
Sony E Lens Mount
Venus Laowa 65mm F/2.8 2X MacroLeica L Mount Prime Lens
Venus Laowa 100mm F/2.8 2:1 Ultra-Macro APOLeica L Mount Prime Lens
Venus Laowa 15mm F/4 MacroLeica L Mount Prime Lens