21mm F1.4 Compact High Speed Wide Angle - Rokinon Lenses - RK21M-E

21mm F1.4 Compact High Speed Wide Angle - Rokinon Lenses - RK21M-E-SIL

Model: RK21M-M
UPC: 0-84438-76491-8
Focal Length: 21mm
Maximum Aperture: F1.4
Coverage: APS-C/Four Thirds/Canon APS-C
Optical Construction: 8 Elements in 7 Groups (3 Aspherical Lenses + 1 Extra Low Dispersion)
Aperture Range: F1.4 to F22
Diaphragm Blades: 9
Coating: Ultra Multi-Coating
Minimum Focusing Distance: 12" (0.3m)
Filter Size: 58mm
Lens Hood: Removable Petal Shaped
Maximum Diameter: 2.53" (64.3mm)
Weight: 9.70oz (275g)
Length: 2.66" (67.5mm)

Model: RK21M-FX
UPC: 0-84438-76487-1
Focal Length: 21mm
Maximum Aperture: F1.4
Coverage: APS-C/Four Thirds/Canon APS-C
Optical Construction: 8 Elements in 7 Groups (3 Aspherical Lenses + 1 Extra Low Dispersion)
Aperture Range: F1.4 to F22
Diaphragm Blades: 9
Coating: Ultra Multi-Coating
Minimum Focusing Distance: 12" (0.3m)
Filter Size: 58mm
Lens Hood: Removable Petal Shaped
Maximum Diameter: 2.53" (64.3mm)
Weight: 10.23oz (290g)
Length: 2.67" (67.9mm)

Model: RK21M-FX-SIL
UPC: 0-84438-76488-8
Focal Length: 21mm
Maximum Aperture: F1.4
Coverage: APS-C/Four Thirds/Canon APS-C
Optical Construction: 8 Elements in 7 Groups (3 Aspherical Lenses + 1 Extra Low Dispersion)
Aperture Range: F1.4 to F22
Diaphragm Blades: 9
Coating: Ultra Multi-Coating
Minimum Focusing Distance: 12" (0.3m)
Filter Size: 58mm
Lens Hood: Removable Petal Shaped
Maximum Diameter: 2.53" (64.3mm)
Weight: 10.23oz (290g)
Length: 2.67" (67.9mm)

Model: RK21M-MFT
UPC: 0-84438-76489-5
Focal Length: 21mm
Maximum Aperture: F1.4
Coverage: APS-C/Four Thirds/Canon APS-C
Optical Construction: 8 Elements in 7 Groups (3 Aspherical Lenses + 1 Extra Low Dispersion)
Aperture Range: F1.4 to F22
Diaphragm Blades: 9
Coating: Ultra Multi-Coating
Minimum Focusing Distance: 12" (0.3m)
Filter Size: 58mm
Lens Hood: Removable Petal Shaped
Maximum Diameter: 2.53" (64.3mm)
Weight: 10.05oz (285g)
Length: 2.61" (66.4mm)

Model: RK21M-E
UPC: 0-84438-76485-7
Focal Length: 21mm
Maximum Aperture: F1.4
Coverage: APS-C/Four Thirds/Canon APS-C
Optical Construction: 8 Elements in 7 Groups (3 Aspherical Lenses + 1 Extra Low Dispersion)
Aperture Range: F1.4 to F22
Diaphragm Blades: 9
Coating: Ultra Multi-Coating
Minimum Focusing Distance: 12" (0.3m)
Filter Size: 58mm
Lens Hood: Removable Petal Shaped
Maximum Diameter: 2.53" (64.3mm)
Weight: 9.70oz (275g)
Length: 2.66" (67.6mm)

Model: RK21M-E-SIL
UPC: 0-84438-76486-4
Focal Length: 21mm
Maximum Aperture: F1.4
Coverage: APS-C/Four Thirds/Canon APS-C
Optical Construction: 8 Elements in 7 Groups (3 Aspherical Lenses + 1 Extra Low Dispersion)
Aperture Range: F1.4 to F22
Diaphragm Blades: 9
Coating: Ultra Multi-Coating
Minimum Focusing Distance: 12" (0.3m)
Filter Size: 58mm
Lens Hood: Removable Petal Shaped
Maximum Diameter: 2.53" (64.3mm)
Weight: 9.70oz (275g)
Length: 2.66" (67.6mm)

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Frequently asked questions

What cameras is the 21mm F1.4 Compact High Speed Wide Angle compatible with?

The 21mm F1.4 Compact High Speed Wide Angle is a Canon M (Black), Fuji X (Black), Fuji X (Silver), Micro 4/3, Sony E (Black), Sony E (Silver) mount lens from Rokinon. Use it on cameras that accept that mount.

Is the 21mm F1.4 Compact High Speed Wide Angle a full-frame or crop-sensor lens?

This lens covers APS-C/Four Thirds/Canon APS-C. That is the image circle it is designed to illuminate, so match it to your camera's sensor format.

What is the focal length of the 21mm F1.4 Compact High Speed Wide Angle?

The 21mm F1.4 Compact High Speed Wide Angle has a focal length of 21mm.It is a wide angle design.

What is the maximum aperture of the 21mm F1.4 Compact High Speed Wide Angle?

The 21mm F1.4 Compact High Speed Wide Angle has a maximum aperture of F1.4, which is the widest opening available for low light and shallow depth of field.

What filter size does the 21mm F1.4 Compact High Speed Wide Angle use?

The 21mm F1.4 Compact High Speed Wide Angle takes 58mm filters. Confirm the thread size if you are using a different mount version of this lens.

What is the minimum focus distance of the 21mm F1.4 Compact High Speed Wide Angle?

The minimum focusing distance is 12" (0.3m). That is the closest this lens can focus while remaining sharp.

Combining a wide-angle perspective with a fast maximum aperture, the Rokinon Compact 21mm f/1.4 Lens designed for Canon M series cameras provides a full frame equivalent focal length of 33.6mm.

One Extra Low Dispersion combine with three Aspherical and elements to control chromatic and comatic aberrations, as well as reduce color fringing, for sharper, clearer imagery. The fast and bright f/1.4 maximum aperture provides easy shooting in difficult lighting conditions and enables greater control for selective focus applications, which is further enhanced by the manual focus design and rounded nine-blade diaphragm to produce pleasing bokeh.

All lens elements utilize Ultra Multi-Coating to reduce lens flare and ghosting for increased contrast and color accuracy when working in harsh lighting conditions. The non-rotating 58mm front filter mount enables the use of polarizing, graduated ND, and other filter types that require precise positioning while its internal focus design maintains the overall length of the lens during use.

User Manual Download

Specifications

Model Name		21mm F1.4 ED AS UMC CS
Aperture Range		F1.4 ~ F22
Optical Construction		8 Elements in 7 Groups
Minimum Focusing Distance		0.28m (0.92ft)
Filter Size		58.0mm
Maximum Diameter		64.3mm
Mount		Canon M	Fujifilm X	Sony E	MFT
Angle of View	APS-C	66.4˚	69.3˚	69.3˚	-
	Four-Thirds (4/3")	-	-	-	55.6˚
Length		67.5mm	67.9mm	67.6mm	66.0mm
Weight		275g	290g	275g	285g

MTF Chart

Optical Construction

Features

Feature overview of the 21mm F1.4 Compact High Speed Wide Angle

Bright F1.4 Aperture

With a bright aperture of F1.4, it maintains shutter speed in indoor and low light conditions and ensures instant response while creating an out-of-focus effect to make the subject stand out.

Aspherical Lens

With minimal spherical aberration and distortion, you can take pictures with incredible precision.

Minimized Flare and Ghost Effects with Ultra Multi Coating

By reducing the impact of flares and ghosting effects in your pictures while ensuring excellent image quality and contrast from the center to the periphery, it offers crystal clear, sharp image quality.

Beautiful Bokeh with 9 Aperture Blades

Featuring 9 rounded blades, it adds an artistic touch to your pictures and creates a sense of soft dimension with incredible bokeh, perfect for out-of-focus portraits and night city landscapes.