Zeiss Carl Distagon T 2,821 vs Sigma 20mm F1.8 EX DG Aspherical RF

Looking to find more information regarding these two camera lenses? Check out our side by side comparison of the Carl Zeiss Distagon T 2,821 vs Sigma 20mm F1.8 EX DG Aspherical RFto review specs, pros and cons, and which is right for you.

Our Winner: Carl Zeiss Distagon T 2,821 over Sigma 20mm F1.8 EX DG Aspherical RF

Focal Length – Tele	21mm vs 20mm	1mm more Tele coverage
Diameter	87mm vs 89mm	2mm smaller in diameter
Max Magnification	0.2x vs x	higher magnification better for close-up shots

Pros Of Sigma 20mm F1.8 EX DG Aspherical RF over Carl Zeiss Distagon T 2,821

Focal Length – Wide	20mm vs 21mm	1mm Wider coverage
Max Aperture – Wide	1.8 vs 2.8	Wider aperture at wide end
Max Aperture – Tele	1.8 vs 2.8	Wider aperture at tele end
Diaphgragm Blades	9 vs	Potentially more rounded and smooth bokeh
Autofocus	Yes vs No	Easier, faster and more accurate focusing
Weight	520g vs 600g	80g lighter
Length	90mm vs 109mm	19mm shorter
Minimum Focus Distance	0.2m vs 0.22m	can focus closer to the subject

Cons Of Carl Zeiss Distagon T 2,821 and Sigma 20mm F1.8 EX DG Aspherical RF

Image Stabilization	No vs No	Reliant on in-body Image Stabilization
Weather Sealing	No vs No	not safe under rain and dust

Carl Zeiss Distagon T2,8/21 vs Sigma 20mm F1.8 EX DG RF All Features

Below is a detailed chart of specifications that compare both lenses to determine which is the best for your needs.

General	Carl Zeiss Distagon T2,8/21	Sigma 20mm F1.8 EX DG RF
Brand	Zeiss	Sigma
Lens Type	Prime	Prime
Price	CHECK PRICE	CHECK PRICE
Lens Type	Wideangle Prime	Wideangle Prime
Lens Mount	Canon EF	Canon EF
Max Format	35mm FF	35mm FF
Focal Range	21mm	20mm
Image Stabilization	No	No
Colour	Unknown	Black
Zoom Method	No Zoom	No Zoom
Power Zoom	No	No
Zoom Lock	No	No
Zoom Ratio	1.0X	1.0X
Aperture
Max Aperture	F2.8	F1.8
Min Aperture	F22.0	F22.0
Aperture Ring	Yes	Yes
Diaphragm Blades	unknown	9
Optics
Optical Elements	16	13
Optical Groups	13	11
Special Elements	unknown	2 aspherical elements
Focusing
Min Focus Distance	0.22m	0.2m
Max Magnification	0.2X	unknown
Autofocus	No	Yes
AF Motor Type	None	unknown
Full Time Manual	N/A	Yes
Focus Method	Unknown	Rear
Distance Scale	Yes	Yes
DoF Scale	Yes	Yes
Distance Scale	Yes	Yes
Focus Distance Limiter	Unknown	Unknown
Physical Specs
Weight	600g	520g
Diameter	87mm	89mm
Length	109mm	90mm
Materials	metal barrel, metal mount	Unknown
Weather Sealing	Unknown	Unknown
Filter Thread	82mm	82mm
Filter Notes	–	–
Hood Supplied	Yes	Yes
Hood Code	Unknown	petal type hood
Tripod Collar	No	No
Optional Accessories	–	–
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