Name: Sigma AF 17-50mm f2.8 DC EX HSM OS Lens Nikon
Brand: Sigma
SKU: UND-09-1320-4 14011375
Price: 167.28 USD
Availability: InStock

Displays noticeable wear including visible dings and scratches. Fully operational and includes all items shown in the listing photos. Glass elements may have slight imperfections not affecting image quality. The actual item for sale is pictured unless specifically noted otherwise. The condition rating applies to the core item and not any accessories.

Sigma AF 17-50mm f/2.8 OS lens for Nikon delivers versatile zoom, bright aperture and stabilization for everyday shooting—shop GearFocus today.

The Sigma DC 17-50mm f/2.8 EX OS HSM is a versatile standard zoom lens designed for APS-C format cameras. It features a constant f/2.8 aperture, optical stabilization, and a Hyper Sonic Motor for fast and quiet autofocus. Ideal for a variety of photography styles, this lens delivers sharp and vibrant images.

Maintains a bright aperture throughout the zoom range, ideal for low-light conditions and achieving shallow depth of field.

Constant f/2.8 Aperture

Reduces camera shake for sharper images, especially in handheld shooting scenarios.

Optical Stabilization (OS)

Ensures fast, smooth, and quiet autofocus performance.

Hyper Sonic Motor (HSM)

Minimizes flare and ghosting for improved contrast and color accuracy.

Multi-Layer Coating

The Sigma DC 17-50mm f/2.8 EX OS HSM is a **zoom** lens designed for **APS-C format DSLR** cameras, covering a **17–50mm** focal length range that spans wide-angle to short telephoto perspectives. The standout feature is its **constant f/2.8 maximum aperture**, which holds steady across the full zoom range — a significant advantage over variable-aperture alternatives when shooting in challenging light or when consistent depth of field is a priority. **Optical image stabilization** is built in to assist with handheld shooting, and the lens supports both **auto and manual focus** modes. The **77mm filter thread** accommodates a wide range of available filters. At **565g**, the lens strikes a practical balance between build and portability for a constant-aperture standard zoom. Mount options include **Canon EF, Nikon F, Sony A, Pentax K, and Sigma SA**, making this lens accessible to photographers across multiple major DSLR platforms. It is classified as a standard focal length range zoom, suited to a variety of everyday shooting scenarios on crop-sensor bodies.

Maintains f/2.8 throughout the entire 17–50mm zoom range, ensuring consistent exposure and depth-of-field control without adjustment as you zoom.

Built-in OS system compensates for camera shake during handheld shooting, particularly useful in low light or at longer focal lengths.

Optical Image Stabilization

Hyper Sonic Motor delivers fast, quiet autofocus with full-time manual focus override without switching out of AF mode.

HSM Autofocus Motor

Engineered specifically for crop-sensor DSLRs, covering an equivalent focal range of approximately 27–80mm in full-frame terms.

APS-C Optimized Design

Covers wide-angle through short telephoto in a single lens, suited for everyday shooting including interiors, portraits, and events.

17–50mm Zoom Range

Accepts widely available 77mm filters for polarizers, ND filters, and lens protection.

77mm Filter Thread

Sigma's EX designation indicates higher-grade optical and mechanical construction compared to standard series lenses.

EX Build Quality

Available in Canon EF, Nikon F, Sony A, Pentax K, and Sigma SA mounts, covering the majority of APS-C DSLR systems.

Broad Mount Compatibility

At 565g, the lens is manageable for extended handheld use without being overly burdensome for a constant-aperture standard zoom.

565g Handling Weight

User Manual

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

Sigma 17-50mm f/2.8 Review

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

2026-01-30-phase10-sigma

2026-01-30T07:05:33.250Z

Sigma 17-50mm f/2.8 OS HSM lens review (with samples)

Fast zoom lens battle: Canon 17-55 f2.8, Sigma 18-35 f1.8, Tamron 17-50 f2.8 VC, Sigma 17-50 f2.8 OS

Sigma 17-50 2.8 Review

The Sigma AF 17-50mm f2.8 DC EX HSM OS Lens for Nikon is a versatile zoom lens well suited for everyday photography, portraits, travel, and general creative work. This lens is in good condition and offers a practical balance of range, speed, and image stabilization for photographers looking for a reliable all-purpose option. Key Features<ul><li>Versatile Zoom Range: The 17-50mm focal length is ideal for a wide variety of subjects, from wider scenes to more tightly framed shots.</li><li>Bright f2.8 Aperture: A constant f2.8 aperture helps with low-light shooting and allows for attractive background separation.</li><li>Optical Stabilization: Built-in OS helps reduce the effects of camera shake for steadier handheld shooting.</li><li>HSM Autofocus: Hyper Sonic Motor autofocus is designed for smooth and responsive focusing performance.</li><li>DC Design: Optimized for APS-C-format cameras, making it a strong match for compatible Nikon DSLR bodies.</li><li>EX Series Construction: Part of Sigma's EX line, known for solid build quality and a dependable feel.</li><li>Everyday Utility: A practical choice for portraits, events, travel, and general-purpose photography.</li></ul> If you're looking for a flexible standard zoom that can handle a wide range of shooting situations, this Sigma 17-50mm f2.8 is a capable addition to your kit.
 
Condition Notes
Zoom is VERY stiff.

Continental U.S.

Sigma AF 17-50mm f2.8 DC EX HSM OS Lens Nikon

<h3 class="text-[1.5rem] font-semibold">100% Refund Guarantee for Lost, Damaged, or Misrepresented Items</h3>
At GearFocus, we're dedicated to providing a secure and reliable marketplace for creatives. Our buyer protection policy ensures peace of mind, safeguarding your purchases from unforeseen issues.
&nbsp;
<h3 class="text-[1.5rem] font-semibold">How It Works:</h3>
Follow These Steps:
<ol class="text-[1.3rem]">
<li>Contact the Seller: If there's an issue, contact the seller within 48 hours of delivery. Many problems can be resolved directly through their return policy. Be sure to provide clear photos or videos when messaging the seller.</li>
<li>Contact GearFocus: If the seller hasn&rsquo;t responded within 24 hours, email us at&nbsp;<a class="text-brand-secondary hover:text-brand-primary" href="mailto:support@gearfocus.com" target="_blank" rel="noopener noreferrer">support@gearfocus.com</a> with supporting documentation (photos, repair estimates, etc.).</li>
<li>We&rsquo;ll Take It from There: GearFocus will step in, review the situation, and collaborate with the seller. We&rsquo;ll notify you if additional details are needed to process your refund.</li>
</ol>
&nbsp;
<h3 class="text-[1.5rem] font-semibold">What&rsquo;s Covered?</h3>
To be covered, orders must be completed directly through GearFocus (including payment and shipment records) and issues reported within 48 hours of delivery or within 14 days of the expected delivery date if undelivered.
You qualify for a refund if your item is:
<ul class="text-[1.3rem]">
<li>Lost by the carrier</li>
<li>Damaged during shipping</li>
<li>Significantly different from the listing description or photos</li>
<li>Not delivered within 10 days of the expected arrival date</li>
</ul>
&nbsp;
<h3 class="text-[1.5rem] font-semibold">Seller Return Policies &ndash; Know Before You Buy</h3>
Sellers on GearFocus follow one return policy per listing, clearly outlined in the item description. Buyers are encouraged to&nbsp;review the return policy carefully before purchasing.
&nbsp;
<h3 class="text-[1.5rem] font-semibold">Return Policies Include:</h3>
<ul class="text-[1.3rem]">
<li>48-Hour Verification Period (For Verified Sellers): Buyers have 48 hours to inspect the item upon delivery. If discrepancies are found, the seller covers return shipping. (Excludes "As-Is" and "Poor" condition items)</li>
<li>14-Day No Questions Asked Return: Some approved sellers allow returns for any reason within 14 days. Buyers cover return shipping and seller fees.&nbsp;(Excludes items classified as "Poor" or "As-Is" , and Drones)</li>
</ul>
&nbsp;
Important: Return policies are set by the seller at the time of listing. Buyers cannot request to switch policies after purchase.
&nbsp;
<h3 class="text-[1.5rem] font-semibold">Exceptional Cases &ndash; Returns Outside the Seller&rsquo;s Policy</h3>
Occasionally, a seller may offer to accept a return outside of their stated policy. When this occurs:
<ul class="text-[1.3rem]">
<li>Both the buyer and seller must contact GearFocus Support at <a class="text-brand-secondary hover:text-brand-primary" href="mailto:support@gearfocus.com" target="_blank" rel="noopener noreferrer">support@gearfocus.com</a> or message us on <a class="text-brand-secondary hover:text-brand-primary" href="gearfocus.com" target="_blank" rel="noopener noreferrer">gearfocus.com</a>.</li>
<li>GearFocus will mediate and help negotiate responsibility for transaction fees and shipping.</li>
<li>Our goal is to achieve a fair resolution for both parties.</li>
</ul>
&nbsp;
<h3 class="text-[1.5rem] font-semibold">What Isn&rsquo;t Covered?</h3>
<ul class="text-[1.3rem]">
<li>Claims made after 48 hours of delivery (or 10 days for non-delivery)</li>
<li>Off-platform transactions</li>
<li>Buyer's remorse or returns outside of the seller&rsquo;s policy</li>
<li>Forwarded or re-shipped packages</li>
</ul>
&nbsp;
Questions? Contact us at <a class="text-brand-secondary hover:text-brand-primary" href="mailto:support@gearfocus.com" target="_blank" rel="noopener">support@gearfocus.com</a>.
&nbsp;
At GearFocus, we&rsquo;re committed to building trust and ensuring a smooth experience for all creatives, whether buying or selling.

Sigma AF 17-50mm f2.8 DC EX HSM OS Lens Nikon

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