Manual-focus lens for Sony
Samyang 50mm F1.4 AS UMC
50 mm, f/1.4, made for full frame, focused by hand. It mounts natively, with no adapter, on 8 of our APS-C cameras; on the a6400 it frames like 75 mm.
- Manual focus
- 50 mm · 75 mm equiv. on a6400
- f/1.4 to f/22
- 565 g
- 77 mm filter
- Focuses to 45 cm
On your camera
The view and the weight with the camera (battery and card included).
| Camera | View (35 mm equiv.) | Weight with camera | Fit |
|---|---|---|---|
| Sony a6000 | 75 mm | 909 g | Fits; you focus by hand |
| Sony a6100 | 75 mm | 961 g | Fits; you focus by hand |
| Sony a6400 | 75 mm | 968 g | Fits; you focus by hand |
| Sony a6600 | 75 mm | 1,068 g | Fits; you focus by hand |
| Sony a6700 | 75 mm | 1,058 g | Fits; you focus by hand |
| Sony ZV-E10 | 75 mm | 908 g | Fits; you focus by hand |
| Sony ZV-E10 II | 75 mm | 942 g | Fits; you focus by hand |
| Sony FX30 | 75 mm | 1,211 g | Fits; you focus by hand |
Before the first shot
Turn the focus ring until the subject looks sharp; focus peaking (sharp edges outlined in colour) and the magnified view in the viewfinder or on the screen make that easier. The camera cannot set the aperture, so shoot in aperture priority (A or Av) or manual exposure: the camera measures the light through the lens at the aperture you set on its ring. Check the first pictures and correct the exposure if they come out too dark or too light: Sony's guide warns that the camera may not measure the light correctly through a lens without electrical contacts.
- Sony: the camera sees no lens attached, so turn on “Release w/o Lens” in its menu, or it will not take a picture. Sony's manual
What it frames
From 3 m back it takes in a scene about 1.4 × 0.9 m on the a6400. It focuses down to 45 cm from the sensor.
Autofocus lenses with a similar view for Sony E
- Yongnuo YN50mm F1.8S DA DSM75 mm equiv. · f/1.8 · 146 g
- TTArtisan AF 50mm F1.8 Neo75 mm equiv. · f/1.8 · 156–167 g
- Sony FE 50mm F2.5 G75 mm equiv. · f/2.5 · 174 g
Other manual-focus lenses for Sony E, closest in focal length
- TTArtisan APS-C 50mm F1.275 mm equiv. · f/1.2 · 336 g
- TTArtisan APS-C 50mm F0.9575 mm equiv. · f/0.95 · 411 g
- TTArtisan Tilt 50mm F1.475 mm equiv. · f/1.4 · 452 g
- TTArtisan 50mm F1.4 ASPH.75 mm equiv. · f/1.4 · 429–457 g
- TTArtisan 50mm F275 mm equiv. · f/2 · 190–210 g
- 7Artisans 50mm F0.9575 mm equiv. · f/0.95 · 416 g
- 7Artisans Tilt 50mm F1.475 mm equiv. · f/1.4 · 364 g
- 7Artisans 50mm F1.875 mm equiv. · f/1.8 · 167 g
Facts from the makers' specification pages. Samyang's specifications. How we check
Questions about this lens
Does the Samyang 50mm F1.4 AS UMC autofocus?
No. It is a manual-focus lens: you turn its focus ring and set the aperture on its aperture ring. Sony cameras take a picture with it only once a setting is turned on: it is named under “Before the first shot”.
Which cameras does the Samyang 50mm F1.4 AS UMC fit?
8 APS-C cameras in our catalogue: a6000, a6100, a6400, a6600, a6700, ZV-E10, ZV-E10 II, FX30. It is made for full frame, so on these cameras it frames like a longer lens.
What filter size does it take?
77 mm filters. Every lens with a 77 mm thread.
How big is it, and what is inside?
81.6 mm across and 100.7 mm long; 9 elements in 6 groups, in Samyang's figures.