Olympus M.Zuiko Digital ED 17mm F1.2 Pro vs Samyang 20mm F1.8 ED AS UMC Detailed Comparison

Olympus M.Zuiko Digital ED 17mm F1.2 Pro vs Samyang 20mm F1.8 ED AS UMC

Lens to replace

Change

Wideangle Prime | Micro Four Thirds

Change

Samyang 20mm F1.8

Wideangle Prime | Micro Four Thirds

Reasons to choose Olympus M.Zuiko Digital ED 17mm F1.2 Pro over Samyang 20mm F1.8 ED AS UMC

Focal Length - Wide	17mm vs 20mm	3mm wider coverage
Max Aperture - Wide	1.2 vs 1.8	faster lens at wide
Diaphragm Blades	9 vs 7	better Bokeh
Autofocus	Yes vs None	Easier and more accurate focusing
Weight	390 g vs 497 g	107 g lighter
Diameter	68 mm vs 83 mm	15 mm smaller in diameter
Length	87 mm vs 88 mm	1 mm shorter
Filter Thread	62 mm vs 77 mm	Smaller filters are cheaper
Weather Sealing	Yes vs None	weather sealed

Reasons to choose Samyang 20mm F1.8 ED AS UMC over Olympus M.Zuiko Digital ED 17mm F1.2 Pro

Price	$599 vs $1,228	Cheaper by $629
Focal Length - Tele	20mm vs 17mm	3mm more tele coverage

Olympus 17mm F1.2 Pro vs Samyang 20mm F1.8 Specs Table

Detailed comparison of specifications

General	Olympus 17mm F1.2 Pro	Samyang 20mm F1.8
Brand	Olympus	Samyang
Lens Type	Prime	Prime
Price	$1,227.56	$599.00
Lens Type	Wideangle Prime	Wideangle Prime
Lens Mount	Micro Four Thirds	Micro Four Thirds
Max Format	FourThirds	35mm FF
Focal Range	17mm	20mm
Image Stabilization
Colour	Black	Unknown
Zoom Method	No Zoom	No Zoom
Power Zoom	No	No
Zoom Lock	No	No
Zoom Ratio	1.0X	1.0X
Aperture
Max Aperture	F1.2	F1.8
Min Aperture	F16	F22
Aperture Ring	No	Yes
Diaphragm Blades	9	7
Optics
Optical Elements	15	13
Optical Groups	11	12
Special Elements	1 Super ED, 3 ED, 1 ED-DSA, 1 EDA, 1 Super HR, 1 aspherical	Two aspherical + 3 ED elements, Ultra Multi Coating
Focusing
Min Focus Distance	0.2m	0.2m
Max Magnification	0.15X	unknown
Autofocus	Yes	No
AF Motor Type	Stepper motor	No AF
Full Time Manual	Yes	Yes
Focus Method	Internal	Internal
Distance Scale	No	Yes
DoF Scale	Yes	Unknown
Distance Scale	No	Yes
Focus Distance Limiter	Unknown	Unknown
Physical Specs
Weight	390g	497g
Diameter	68mm	83mm
Length	87mm	88mm
Materials	Magnesium alloy	Unknown
Weather Sealing	Yes	No
Filter Thread	62mm	77mm
Filter Notes	-	-
Hood Supplied	Yes	Yes
Hood Code	LH-66C	Unknown
Tripod Collar	No	No
Optional Accessories	-	-
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