Sigma 18-50mm F2.8-4.5 DC OS HSM vs Sigma 17-50mm F2.8 EX DC OS HSM Side By Side Comparison

Looking to find more information regarding these two camera lenses? Check out our side by side comparison of the Sigma 18-50mm F2.8-4.5 DC OS HSM vs Sigma 17-50mm F2.8 EX DC OS HSMto review specs, pros and cons, and which is right for you.

Sigma 18-50mm F2.8-4.5 DC OS HSM Top Features

18-50mm Focal Range
F2.8 – F4.5 Max Aperture
Image Stabilization
Filter Thread: 67mm
Max Format: APS-C / DX
Sony Alpha Mount
Weight: 395g.
Diameter: 74mm
Length: 89mm
Min Focus Distance:0.3m
Max Magnification:0.24x

Sigma 17-50mm F2.8 EX DC OS HSM Top Features

17-50mm Focal Range
F2.8 Max Aperture
Image Stabilization
Filter Thread: 77mm
Max Format:
Sony Alpha Mount
Weight: 565g.
Diameter: 84mm
Length: 92mm
Min Focus Distance:0.28m
Max Magnification:0.2x

Our Winner: Sigma 18-50mm F2.8-4.5 DC OS HSM over Sigma 17-50mm F2.8 EX DC OS HSM

Internal Zoom	Yes vs No	Length of the lens doesn’t change during zooming
Weight	395g vs 565g	170g lighter
Diameter	74mm vs 84mm	10mm smaller in diameter
Length	89mm vs 92mm	3mm shorter
Filter Thread	67mm vs 77mm	Smaller filters are cheaper and easier to find
Max Magnification	0.24x vs 0.2x	higher magnification better for close-up shots

Pros Of Sigma 17-50mm F2.8 EX DC OS HSM over Sigma 18-50mm F2.8-4.5 DC OS HSM

Focal Length – Wide	17mm vs 18mm	1mm Wider coverage
Optical Zoom	2.90x vs 2.80x	More flexible focal coverage
Max Aperture – Tele	2.8 vs 4.5	Wider aperture at tele end
Minimum Focus Distance	0.28m vs 0.3m	can focus closer to the subject

Cons Of Sigma 18-50mm F2.8-4.5 DC OS HSM and Sigma 17-50mm F2.8 EX DC OS HSM

Weather Sealing	No vs No	not safe under rain and dust

Sigma 18-50mm F2.8-4.5 DC OS HSM vs Sigma 17-50mm F2.8 EX DC OS HSM All Features

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

General	Sigma 18-50mm F2.8-4.5 DC OS HSM	Sigma 17-50mm F2.8 EX DC OS HSM
Brand	Sigma	Sigma
Lens Type	Zoom	Zoom
Price	CHECK PRICE	CHECK PRICE
Lens Type	Standard Zoom	Standard Zoom
Lens Mount	Sony Alpha	Sony Alpha
Max Format	APS-C / DX	APS-C / DX
Focal Range	18-50mm	17-50mm
Image Stabilization	Yes	Yes
Colour	Unknown	Unknown
Zoom Method	Rotary (internal)	Rotary (extending)
Power Zoom	–	–
Zoom Lock	–	–
Zoom Ratio	2.8X	2.9X
Aperture
Max Aperture	F2.8 – F4.5	F2.8
Min Aperture	F22.0 – F36.0	F22.0
Aperture Ring	No	No
Diaphragm Blades	7	7
Optics
Optical Elements	16	17
Optical Groups	12	13
Special Elements	2 SLD glass elements 3 aspherical elements	2 FLD glass elements 2 glass mold elements 1 hybrid aspherical lens
Focusing
Min Focus Distance	0.3m	0.28m
Max Magnification	0.24X	0.2X
Autofocus	Yes	Yes
AF Motor Type	Ultrasonic	Ultrasonic
Full Time Manual	No	No
Focus Method	Internal	Internal
Distance Scale	Yes	Yes
DoF Scale	No	No
Distance Scale	Yes	Yes
Focus Distance Limiter	No	No
Physical Specs
Weight	395g	565g
Diameter	74mm	84mm
Length	89mm	92mm
Materials	Metal mount	Metal mount
Weather Sealing	No	No
Filter Thread	67mm	77mm
Filter Notes	Does not rotate on focusing	Does not rotate on focusing
Hood Supplied	Yes	Yes
Hood Code	Unknown	Unknown
Tripod Collar	No	No
Optional Accessories	–	–
	Report a Correction	Report a Correction