Autofocus
Sigma 24-70mm F2.8 EX DG Macro
- Focal length
- 24–70 mm
- Aperture
- f/2.8
- Weight
- 715 g
- Filter diameter
- 82 mm
- Diameter
- 89 mm
- min. focus dist.
- 40 cm
336 results
Is a lens missing? Suggest a lens
The f in f/2.8 is the f-number: focal length divided by aperture diameter. Learn why lower means more light and how the f-stop scale works.
How to clean a camera lens: blow off dust, then wipe gently with a microfiber cloth or lens paper. Steps and warnings from Canon, Nikon…
Types of camera lenses explained: wide-angle, standard, telephoto, prime, zoom, macro and more, with focal length ranges and typical uses.