Laowa 100mm f/2.8 2:1 Ultra Macro APO - Pentax K

The Laowa 100mm f/2.8 2X Ultra-Macro APO for Pentax K-mount is a standout optic that redefines the capabilities of a standard macro lens. While most professional macro lenses stop at 1:1 (life-size) magnification, this lens reaches a 2:1 magnification, allowing you to capture subjects at twice their actual size on your sensor. Optimized for both full-frame and APS-C Pentax DSLRs, it serves as a dual-threat tool: a powerful microscope for the field and a tack-sharp 150mm equivalent portrait lens for the studio.

The "APO" (Apochromatic) designation is particularly important here. In high-magnification photography, chromatic aberration (color fringing) is often the biggest hurdle to image quality. By utilizing a pair of low-dispersion glass elements, Laowa has virtually eliminated purple and green fringing in both the in-focus and out-of-focus areas, ensuring professional-grade clarity across the entire focusing range.

Product Features in Detail

The 2:1 Advantage
This lens allows you to bridge the gap between standard macro and extreme micro-photography. At 2:1 magnification, the individual ommatidia (facets) of an insect's eye or the intricate fibers of a bank note become clearly visible, providing a perspective that standard 1:1 lenses simply cannot reach.

Professional APO Correction
The Apochromatic design is a "gold standard" for macro enthusiasts. By correcting color fringing throughout the frame, your high-contrast shots—such as dew drops on a leaf or the metallic edges of a watch movement—remain crisp and free of distracting color halos.

Versatile "Infinity" Capability
Because this lens can focus to infinity, it isn't just a macro lens; it is a high-quality short-telephoto prime. You can use it to photograph a butterfly at 2:1 magnification and then immediately pivot to capture a distant landscape or a flattering portrait.

Tactile Focus Control
Macro photography at 2:1 magnification results in a razor-thin depth of field. The manual focus design of the Laowa 100mm provides a long, smooth focus throw, allowing for the microscopic adjustments necessary to nail focus exactly where you want it.

Internal Focusing Stability
While the lens barrel may move slightly internally, its robust build ensures that the front element is well-balanced. This stability is crucial when working on tripod setups or macro rails where the center of gravity affects the precision of the shot.

Pentax System Synergy
On Pentax APS-C bodies, the 150mm equivalent reach provides a generous working distance. This allows you to stay further back from skittish subjects like insects while still achieving a massive 2:1 reproduction ratio.