Start with the type you need
- This category currently covers one lens: the Sigma 18-50mm F2.8 DC DN Contemporary for Sony E-mount. It is an APS-C standard zoom with a constant F2.8 aperture, equivalent to about 27-75mm on full frame, and the Sony E version weighs 290 g.
- Good fit: Sony E-mount APS-C shooters who want a fast zoom that stays compact, and travelers who want a light everyday lens.
- Poor fit: anyone who needs telephoto or ultra-wide reach. Sigma's same line also includes a 10-18mm and a 50-120mm.
China model vs global model
- The card's specs follow Sigma's global site. Confirm China-market specs and warranty with the seller before buying a China unit.
Common pitfalls
- Four mounts exist: L-Mount, Canon RF, FUJIFILM X and Sony E. Confirm yours before you order.
- There is no optical stabilization in the lens, so you rely on in-body stabilization if your camera has it.
- Protector and circular polarizing filters (CPL-21) are sold separately. The filter size is 55mm.
- Minimum focus is 12.1 cm at the wide end and 30 cm at the long end, with a fast, quiet stepping motor.
How to read our card
- Sigma 18-50mm F2.8 DC DN Contemporary (Sony E-mount): a compact constant-F2.8 APS-C zoom that works as a first everyday zoom for travel. Card says: buy. Price call: roughly even between China and the US; see the card for today's price.
Before you buy
- Check the mount and sensor format.
- Check whether your body has stabilization.
- Budget for 55mm filters.
- For a China unit, confirm specs and warranty with the seller.