Sigma EX macro lens for Pentax K mount with true 1:1 magnification at 70mm.
The Sigma 70mm f/2.8 EX DG Macro is a dedicated macro lens for Pentax K mount, offering true 1:1 magnification at a short telephoto focal length ideal for close-up work. The 70mm length provides a comfortable working distance from subjects while the EX build quality and DG full-frame coverage ensure professional-level performance.
Optical quality is excellent with sharp, flat-field performance essential for macro photography. The lens delivers superb detail reproduction at close focus distances and doubles as a fine portrait lens at normal shooting distances. The f/2.8 aperture provides a bright viewfinder image for precise manual focusing during critical macro work.
Build quality follows Sigma's EX premium standard with a solid metal barrel and smooth focus ring with long throw for precise manual focus adjustments. The internal focusing design maintains a constant physical length. The lens is relatively compact for a macro, making it practical for handheld close-up work in the field.
On the used market, the Sigma 70mm f/2.8 Macro offers excellent macro capability for Pentax K mount at very competitive prices. For macro enthusiasts and portrait photographers wanting a dual-purpose lens, the combination of true 1:1 magnification and quality 70mm optics delivers outstanding versatility and value.