Sigma 17–50mm F2.8 EX DC OS HSM is listed for SIGMA SA with APS-C coverage. Its verified front filter size is Ø77 mm. The supplied research links this exact mount variant to manufacturer evidence. Body-specific AF, crop and adapter behavior remain separate checks.
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Verified specifications
| Field | Value |
|---|---|
| Maker model code | 17_50_28 |
| Mount | SIGMA SA |
| Image format | APS-C |
| Front filter thread | Ø77 mm |
| Model ID | sigma-17-50-28-sigma-sa |
| Focal length | 17–50 mm |
| Maximum aperture | f/2.8 |
| Filter attachment type | screw_in |
| Weight | 19.9 oz (approx.; 565 g maker value) |
| Length | 3.61 in (approx.; 91.8 mm maker value) |
| Maximum barrel diameter | 83.5 mm |
| Closest focus | 0.92 ft (approx.; 0.28 m maker value) |
| Lens AF hardware | Maker states yes |
| Optical stabilization | Maker states yes |
Compare camera lenses listings
Compare the exact model code and rear mount in each listing. Amazon results may contain another mount or generation; the search is not a compatibility verdict.
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Search camera lenses on AmazonChoosing a camera
Look for the SIGMA SA designation on the camera specification, then verify the exact model code and mount variant against its support page. The maker lists a 17–50 mm focal range and f/2.8 maximum aperture. A physical mount match is a starting point; still AF, movie AF, crop behavior, stabilization and firmware need separate checks.
Choosing a filter
A circular screw-in filter with a matching documented thread size is only a mechanical candidate. Magnetic filters, wide frames and stacked rings need separate system and vignetting checks. When no front thread is specified, do not buy a size from the focal length or barrel diameter.
Hoods, caps and other maker-listed parts
“Supplied” describes the maker’s package statement for this exact lens record. A merely related part may be sold separately, and neither label establishes cross-generation interchangeability.
| Part code | Maker label | Relationship |
|---|---|---|
| LH825-03 | LH825-03 | Maker states supplied |
Keep exploring
Official sources and scope
Checked for this reference on October 30, 2026. Product firmware and support lists can change; inspect the current maker page for your exact revision.