Sigma 18-50mm f/2.8-4.5 DC OS HSM
Optical design
Bright lens thanks to the high aperture value It is a ring-type ultrasonic motor designed to provide quick and silent focusing. Full frame equivalent focal length is 27.0-75.0 mm. Has 7 aperture blades, mid-grade lenses usually have this amount of blades. Having rounded blades provides out of focus circle shape closer to a circle.Physical characteristics
With a lens filter diameter of 67 mm commonly filter size, presents numerous filter possibilities. Weights 395 grams so plan ahead, carry only if really necessary. 88 mm long, requires consideration if you want to carry in the camera bag.Sigma 18-50mm f/2.8-4.5 DC OS HSM purchase historyStable
Prices have held steady across 60 months of tracked sales — pay around the $121.00 fair value and watch for outliers below it.
Best deals
198 of 392 tracked sales (51%) closed at or under the $121.00 fair value.
- Mar 10, 2025$18.00$-103.00 / typical
- Mar 10, 2025$19.00$-102.00 / typical
- May 5, 2022$30.00$-91.00 / typical
- Sep 9, 2021$38.00$-83.00 / typical
- Sep 25, 2025$38.00$-83.00 / typical
eBay Auctions
Technical Specifications
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Reviews
good used one is great buy. Also this is Sigma 17-70mm f2.8-4 alternative Smooth Zoom and good build quality, good image quality for the price. OS is definitely plus to have steady shots. Also HSM enables to work with Nikon low end camera such as D40/D40x which do not have lens motor.
Great lens for the money if you have a camera that does not have auto focus Works really well but like many many others have noted, the F 2.8 only engages when your in the 18mm range if you go any further in it does not sit there. For what you pay for it the lens is worth it. I enjoy it but will prob be getting a Nikkor Lens down the road when I upgrade to a D7000. If you have a camera that already has Autofocus try a different lens.
very good inexpensive lens. Nice inexpensive lens. I like the fact that it doesn't extend as you zoom. The barrel length is fixed. The 2.8 very rapidly goes back up asyou zoom. So it isn't as useful as I had expected for fast lens work.
Frequently Asked Questions
What is the Sigma 18-50mm f/2.8-4.5 DC OS HSM?
Sigma 18-50mm f/2.8-4.5 DC OS HSM is a camera lens with 18-50mm focal length, a maximum aperture of f/2.8/22, for the Minolta A, Sony A mount, supporting the Aps-c format, weighing 395g.
What mount is the Sigma 18-50mm f/2.8-4.5 DC OS HSM compatible with?
Sigma 18-50mm f/2.8-4.5 DC OS HSM uses a Minolta A, Sony A mount and supports the Aps-c format.
How much does the Sigma 18-50mm f/2.8-4.5 DC OS HSM cost?
Based on recent eBay sold listings the Sigma 18-50mm f/2.8-4.5 DC OS HSM typically sells for around $18.00. Actual prices vary with condition and seller.
Is the Sigma 18-50mm f/2.8-4.5 DC OS HSM a good lens?
Sigma 18-50mm f/2.8-4.5 DC OS HSM has a community rating of 4.0/5 from 19 review(s).
Which lenses are similar to the Sigma 18-50mm f/2.8-4.5 DC OS HSM?
Similar lenses include Sigma 17-50mm f/2.8 EX DC HSM, Sigma 18-50mm f/2.8 EX DC Macro, Sigma 18-50mm f/2.8 EX DC.