Samyang 50mm F1.4 AS UMC is a Fixed aperture Manual Focus (MF)
Standard Prime lens with 35mm FF max sensor coverage, and it is designed to be used with
KAF Mount cameras. Samyang 50mm F1.4 AS UMC is also sold under the Rokinon 50mm F1.4 AS IF UMC name in some countries.
What type of photography is the Samyang 50mm F1.4 AS UMC lens good for?
The type of photography that you are planning to use the Samyang 50mm F1.4 AS UMC is an important decision factor. Here we have evaluated its suitability to various photography scenarios:
Lenses in Pentax KAF Mount with Same Focal and Aperture Range
Reasons to Buy Samyang 50mm F1.4 AS UMC Lens
Here we've included a summary of the advantages and disadvantages of the Samyang 50mm F1.4 AS UMC lens in a list form to help you determine whether it offers the features you need.
| Aperture Ring |
| Distance Scale |
| DoF(Depth of Field) Scale |
| Hood supplied |
| Full-time Manual Focusing |
| Very Fast Aperture |
| Covers Full-Frame Sensor |
| 8 Diaphragm Blades for Smooth Bokeh |
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| No Weather Sealing |
| No Autofocus |
Lens Mount
Samyang 50mm F1.4 AS UMC is compatible with cameras that have a Pentax KAF lens mount. Some of the latest released cameras that are compatible with the Pentax KAF lenses are Pentax K-3 III Monochrome, Pentax KF and Pentax K-3 III.
Samyang 50mm F1.4 AS UMC is also available in Canon EF , Nikon F (FX), Sony Alpha and Sony E mounts.
Size, Weight and Filter Thread
Size and weight is a very important decision factor when searching for your next lens. Samyang 50mm F1.4 AS UMC has a maximum diameter of 82mm and total length of 75mm. It weighs 535g / 18.9 oz.
Samyang 50mm F1.4 AS UMC has a filter thread of 77mm. Below are links to the filters that we recommend you to consider for your Samyang 50mm F1.4 AS UMC:
Focal Range
Samyang 50mm F1.4 AS UMC has a fixed focal length of 50mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides an 35mm (FF) equivalent of 75mm.
Below are the 3 Standard Prime type Pentax KAF mount lens alternatives with highest max magnification ratios:
Aperture
Samyang 50mm F1.4 AS UMC has a max aperture of F1.4 and a minimum aperture of F22.
Optical Formula
Samyang 50mm F1.4 AS UMC's optical formula consists of 9 elements in 6 groups . Following special elements are used in this design:
- 1 hybrid + 1 aspherical element
- Ultra Multi Coating
Lens Hood
Samyang 50mm F1.4 AS UMC comes with a removable lens hood which is handy to reduce lens flare and glare in your photos.
Popular Comparisons of Samyang 50mm F1.4 AS UMC
Here are the eight most popular comparisons of the Samyang 50mm F1.4 AS UMC amongst Camera Decision readers.
Top Alternatives of Samyang 50mm F1.4 AS UMC Lens
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