Laowa 25mm f / 2.8 Ultra Macro for Pentax K

Dedicated to extreme close-up imaging, this lens is a specialized macro lens for photographing subjects at magnifications greater than life-size. Specifically developed for macro photography, this lens is designed for use within a 2.5:1 to 5:1 magnification range for producing larger-than-life-size imagery. © Ireneusz Irass Waledzik © Alberto Ghizzi Panizza © Shekhei Goh xa0 Carefully designed to extend the short working distance of traditional 25mm lens in order to provide sufficient room for lighting hitting the subject.xa0Operating within a 2.5:1 to 5:1 range, this lens has a minimum focus distance of just 6.8″ at the 5:1 magnification along with a comfortable 1.6″ working distance.xa0(40mm @ 5:1, 45mm @ 2.5:1) xa0 xa0 Complementing the close-up capabilities, the optical design incorporates 8 elements in 6 groupsxa0 with an extra-low dispersion element to deliver an unprecedented corner to corner sharpness. The extra-low dispersion element reduces color fringing and chromatic aberrations for a high degree of clarity. © Wentaidashu © Gua Ge xa0 Wide-angle design with magnification range from 2.5 to 5X benefits the high magnification design by providing greater depth of field compared to telephoto or long lens designs.xa0Moreover, manual focus operation for precise control over focusing distance when working with close-up subjects. © YiYeGuZhou © YiYeGuZhou xa0 Laowa 25mm f/2.8 2.5-5X Ultra Macro has one of the smallest lightest barrel of lenses in its class. This allows more light to gather on the subject and convenient to use in fields. The image below shows the size difference between our 25mm f/2.8 2.5-5X and the MP-E 65mm f/2.8 1-5X in the market. © Richard Wong © Richard Wong © Je Ge © Gil Wizen © Wentaidashu © YiYeGuZhou Name 25mm f/2.8 2.5-5x Ultra Macro Focal Length 25mm Max. Aperture f/2.8 Angle of View 10.3° Format Compatibility Full Frame Lens Structure 8 elements in 6 groups Aperture Blades 8 Min. Focusing Distance 17.3 (5x) – 23.4 (2.5x)cm Max. Magnification 5x Focus Mode Manual Focus Filter Thread N/A Dimensions 82 x 65 mm Weight 400g Mounts (Standard Version) Canon EF RF / Nikon F Z / Sony E / Pentax K MTF Optical Structure