If you bought an APS-C Canon camera like the EOS R7, R10, or R50 and have outgrown the dark, variable-aperture standard kit lens, the Sigma 18-50mm f/2.8 DC DN | Contemporary is the upgrade you have been waiting for. It takes the highly versatile “standard zoom” range and packs a fast, constant f/2.8 aperture into a barrel that is almost impossibly small.
Factoring in Canon’s 1.6x crop factor, this lens provides a full-frame equivalent field of view of 28.8-80mm. Whether you are shooting street photography, travel vistas, or portraiture, it delivers beautiful background separation and low-light performance while remaining light enough to balance perfectly on Canon’s most compact mirrorless bodies.
Invisibly Light: Weighing exactly 300g (10.6 oz) and measuring under three inches long, it completely eliminates the excuse of leaving your camera at home because it’s “too heavy to carry.” It is dramatically smaller and lighter than adapting an older DSLR-era f/2.8 lens.
Constant f/2.8 Aperture: Unlike native RF-S kit lenses that quickly drop to f/6.3 as you zoom in, this lens stays bright at f/2.8 across the entire range. This lets you shoot comfortably indoors without needing a flash, keeps your ISO low for cleaner images, and creates stunning, creamy background blur for portraits.
Optimized for Canon Dual Pixel AF: Driven by a quiet stepping motor (STM), autofocus is snappy and incredibly precise. It fully communicates with your Canon camera to support advanced subject tracking and Servo AF, making it a highly reliable option for tracking fast-moving humans or pets in both photo and video modes.
Surprisingly Good Macro: This lens is incredibly versatile even up close. At the 18mm wide end, you can focus as close as 12.1 cm (4.8 inches) from your sensor with a maximum magnification ratio of 1:2.8. This allows you to capture dramatic, wide-angle macro shots of food, flora, and intricate details.
| Specification | Detail |
| Mount | Canon RF Mount (APS-C format) |
| Focal Length | 18-50mm (28.8-80mm full-frame equivalent) |
| Maximum Aperture | f/2.8 (Constant) |
| Minimum Focus Distance | 12.1 cm / 4.8 in (at 18mm) |
| Maximum Magnification | 1:2.8 (at 18mm) |
| Autofocus Motor | Stepping Motor (STM) |
| Filter Thread | 55mm |
| Dimensions | 69.2mm x 74.5mm / 2.7 x 2.9 inches |
| Weight | 300g / 10.6 oz |
| Weather Sealing | Dust and splash-resistant mount gasket |
SIGMA585972
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