Samyang 21mm F1.4 ED AS UMC CS is a Fixed aperture Manual Focus (MF)
Wideangle Prime lens with APS-C / DX max sensor coverage, and it is designed to be used with Sony E mount cameras. Samyang 21mm F1.4 ED AS UMC CS is also sold under the Rokinon 21mm F1.4 ED AS UMC CS name in some countries.
What type of photography is the Samyang 21mm F1.4 ED AS UMC CS lens good for?
The type of photography that you are planning to use the Samyang 21mm F1.4 ED AS UMC CS is an important decision factor. Here we have evaluated its suitability to various photography scenarios:
| Photography Type |
Suitability |
| Bird/Wildlife | Poor |
| Sports | Poor |
| Portrait | Average |
| Travel | Average |
| Street | Excellent |
| Wedding | Average |
| Walk Around | Average |
| Vlogging | Good |
| Landscape | Very Good |
Reasons to Buy Samyang 21mm F1.4 ED AS UMC CS Lens
Here, we've included a summary of the advantages and disadvantages of the Samyang 21mm F1.4 ED AS UMC CS 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 |
| 9 Diaphragm Blades |
| Minimum focus distance of 0.28m / 11.0 inch |
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| No Weather Sealing |
| No Autofocus |
Lens Mount
Samyang 21mm F1.4 ED AS UMC CS is compatible with cameras that have Sony E lens mount. Some of the latest released cameras that are compatible with the Sony E lenses are Sony FX30, Sony ZV-E10 and Sony A6600.
Samyang 21mm F1.4 ED AS UMC CS is also available in Canon EF-M , Fujifilm X and Micro Four Thirds mounts.
Size, Weight and Filter Thread
Size and weight is a very important decision factor when searching for your next lens. Samyang 21mm F1.4 ED AS UMC CS has a maximum diameter of 64mm and total length of 68mm. It weighs 275g / 9.7 oz.
Samyang 21mm F1.4 ED AS UMC CS has a filter thread of 58mm.
Focal Range
Samyang 21mm F1.4 ED AS UMC CS has a fixed focal lenght of 21mm which has a 35mm equivalent focal range of 31.5mm when used on a APS-C / DX format camera.
Aperture
Samyang 21mm F1.4 ED AS UMC CS has a max aperture of F1.4 and a minimum aperture of F22.
Optical Formula
Samyang 21mm F1.4 ED AS UMC CS 's optical formula consists of 8 elements in 7 groups . Following special elements are used in this design:
- 3 aspherical
- 2 ED elements
- Ultra Multi Coating
Lens Hood
Samyang 21mm F1.4 ED AS UMC CS comes with a removable lens hood which is handy to reduce lens flare and glare in your photos.
Body Colour
Samyang 21mm F1.4 ED AS UMC CS is available in Black color.
Popular Comparisons of Samyang 21mm F1.4 ED AS UMC CS
Here is the eight most popular comparisons of Samyang 21mm F1.4 ED AS UMC CS amongst Camera Decision readers.