Generic Sigma 70-300mm listing for full-frame — likely the APO DG or DG Macro variant.
The Sigma 70-300mm f/4-5.6 is a budget full-frame telephoto zoom available in various configurations across multiple generations. This generic listing may refer to the DG, APO DG, or DG Macro version depending on the specific item. All variants offer affordable 300mm reach for casual wildlife and sports photography on full-frame and APS-C DSLRs.
Optical performance varies by specific version. The APO versions with apochromatic elements offer noticeably better chromatic aberration control. Non-APO versions show more colour fringing. Centre sharpness is acceptable throughout the range on all versions, with the typical softening at 300mm. No image stabilisation on most versions — Sigma did produce an OS version later.
Available in Canon EF, Nikon F, Sony A, and Pentax K mounts depending on version. Filter thread is typically 58mm. Weight is approximately 545 grams. Build quality is basic plastic. Several generations span from the late 1990s to the 2010s. The non-APO version is the most commonly found and cheapest variant.
Extremely common and cheap on the used market — often under £40. Check for smooth zoom and AF operation. The APO DG version is worth a small premium. None of these versions compete with modern VR-equipped alternatives for serious use, but they remain functional budget telephoto options for casual daytime photography.