Sigma Contemporary C1850DCDNSE 18-50mm
A constant f/2.8 aperture and a mere 98g weight make this 18-50mm zoom exceptionally portable for Leica L APS-C users, with a stepping motor delivering fast, silent autofocus. The lens doubles as a capable macro tool with a 1:2 maximum magnification and a 122mm minimum focus distance, while three aspherical elements maintain edge-to-edge sharpness. Ideal for travel photographers and run-and-gun videographers needing a lightweight, all-purpose lens that handles close-ups without sacrificing bright aperture flexibility.
Snapshot
The 30-Second Version
Price slashed 18% to $468-$720. Overall score dropped to 77 as newer competitors like the Sigma 16-300mm and Tamron 18-300mm take the lead. Still a solid lens for the money, just no longer top of the pack.
Pros & Cons
Pros
- Sharp optics that still hold up 91th
- Now much cheaper at $468-$720 86th
- Solid build quality 86th
Cons
- Autofocus feels dated next to newer rivals
- Limited zoom range compared to modern superzooms
- Overall score dropped to 77 as competition surged
What owners think
How owner sentiment changed over time
ExclusiveBased on when customers actually wrote their reviews - so you can see whether early praise held up.
Based on 59 dated customer reviews, grouped by calendar quarter. Period analysis is in English.
The proof
Performance
Specifications
Full Specifications
Optics
| Type | zoom |
| Focal Length Min | 18 |
| Focal Length Max | 50 |
| Elements | 13 |
| Groups | 10 |
| Aspherical Elements | 3 |
| ED Elements | 1 |
| Coating | Super Multi-Layer Coating |
Aperture
| Max Aperture | 2.8 |
| Min Aperture | 2.8 |
| Constant | Yes |
| Diaphragm Blades | 7 |
Build
| Mount | Sony E |
| Format | APS-C |
| Weather Sealed | Yes |
| Weight | 0.3 kg / 0.6 lbs |
| Filter Thread | 55 |
AF & Stabilization
| AF Type | stepping motor |
| Stabilization | No |
Focus
| Min Focus Distance | 121 |
| Max Magnification | 1:2.8 |
vs Competition
The field has shifted. The Sigma 16-300mm f/3.5-6.7 now offers a massive zoom range with decent sharpness. The Tamron 18-300mm f/3.5-6.3 brings fast VXD autofocus and great stabilization. Nikon's 28-400mm f/4-8 is a superzoom with surprising clarity. The Panasonic 50-200mm f/2.8-4 is a premium telephoto option. And the Viltrox 13mm f/1.4 dominates the ultra-wide budget space. This lens used to sit comfortably in the top 5. Now it's fighting for relevance. The price cut helps, but you have to really want this specific focal range and character to pick it over the newer, more flexible options.
| Spec | Sigma Contemporary C1850DCDNSE 18-50mm | Tamron Di III-A 18-300mm f/3.5-6.3 Di III-A VC VXD | Nikon NIKKOR AF-S DX NIKKOR 16-85mm f/3.5-5.6G ED VR | Panasonic LUMIX S S-R28200 | Canon EF-S 18-135mm f/3.5-5.6 IS USM | Sony E SELP16502 |
|---|---|---|---|---|---|---|
| Focal Length | 18-50mm | 18-300mm | 16-85mm | 28-200mm | 18-135mm | 16-50mm |
| Max Aperture | 2.8 | f/3.5 | f/3.5 | f/4 | f/3.5 | f/3.5 |
| Mount | Sony E | Fuji X | Nikon F | L-Mount | Canon EF-S | Sony E |
| Stabilization | false | true | true | true | true | true |
| Weather Sealed | true | false | false | true | false | true |
| Weight (g) | 290 | 92 | 59 | 413 | 515 | 107 |
| AF Type | stepping motor | VXD linear motor | AF-S | Autofocus | STM | Autofocus |
| Lens Type | zoom | zoom | zoom | macro | zoom | zoom |
| Compare | Compare | Compare | Compare | Compare |
| Product | Af | Bokeh | Build | Macro | Optical | Aperture | Versatility | Social Proof | Stabilization |
|---|---|---|---|---|---|---|---|---|---|
| Sigma Contemporary C1850DCDNSE 18-50mm | 86.1 | 83.8 | 82.9 | 91 | 79.2 | 85.9 | 78.5 | 40.4 | 35.8 |
| Tamron Di III-A 18-300mm f/3.5-6.3 Di III-A VC VXD Compare | 98.2 | 77.8 | 96.2 | 88.6 | 73.5 | 79.6 | 99.2 | 83.1 | 80.7 |
| Nikon NIKKOR AF-S DX NIKKOR 16-85mm f/3.5-5.6G ED VR Compare | 55.1 | 77.8 | 98.5 | 59.9 | 64.2 | 79.6 | 94.2 | 88.1 | 92.3 |
| Panasonic LUMIX S S-R28200 Compare | 55.1 | 80.6 | 73.5 | 71.5 | 91 | 74.2 | 95.6 | 62.6 | 99.4 |
| Canon EF-S 18-135mm f/3.5-5.6 IS USM Compare | 86.1 | 77.8 | 45.8 | 32.9 | 79.2 | 79.6 | 96 | 78 | 92.3 |
| Sony E SELP16502 Compare | 55.1 | 77.8 | 97.6 | 34.9 | 63.2 | 79.6 | 83.5 | 78 | 80.7 |
Price
Value & Pricing
Price just dropped from around $570-$919 down to $468-$720. That's an 18% cut. For what you get, this is now a much easier recommendation. The build and optics always punched above their class. At the old price, it was a tough sell against newer glass. Now it's a genuine steal if you can live with the quirks.
Bestbuy.ca 2 offers From CA$730
Amazon.ca 1 offers From CA$760
B&H Photo 1 offers From CA$906
Price History
Read more
Verdict
The score dipped from 90 to 77, and that's fair. The market moved fast. Newer lenses like the Sigma 16-300mm and Tamron 18-300mm offer more range and modern autofocus. The Nikon 28-400mm is a monster for Z mount. Even the Viltrox 13mm f/1.4 eats into the wide end. This lens is no longer the undisputed king. But at the new lower price, it's a smart buy for someone who values core image quality over zoom range or silent AF. Just know you're buying into a system that's getting squeezed from all sides.
