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Model No:21358
Developed from PENTAX's pursuit of the ultimate visual expression, these two high-performance lenses offer the highest optical quality of all PENTAX interchangeable lenses. Featuring advanced technologies, such as specialoptical glass elements and PENTAX-original lens coatings, they are designed to assure exceptional optical performance and deliver clear, high-contrast images, even at image-field edges.Designed to produce powerful telephoto images, the smc PENTAX-DA 300mm F4ED[IF] SDM is a uni-focal supertelephoto lens with a focal length equivalent to 460mm in the 35mm format. It minimizes chromatic aberrations — a common problem in telephoto lenses — by incorporating ED (Extra-low Dispersion) optical elements in its second and fifth lens. It also offers a minimum focusing distance of 1.4 m (4.6ft), which is the shortest in its product category.• An extra-short minimum focusing distance of 0.45 meters over the entire zoom range• SDM mechanism, assuring extra-smooth, super-quiet autofocus operation using a supersonic motor installedin the lens (Conventional autofocus operation using a camera-installed motor is also possible.)• Dust-resistant, weather-resistant construction with a set of seals to prevent intrusion of dust and water into the lens• Inner Focus mechanism for effective compensation of various aberrations at all focusing distances• SP ( Super Protect ) coating applied to the front surface of the optics to block dust and dirt• Quick-Shift Focus system for instant switching to manual-focus operation after the subject is captured in focus by the AF system
Developed from PENTAX's pursuit of the ultimate visual expression, these two high-performance lenses offer the highest optical quality of all PENTAX interchangeable lenses. Featuring advanced technologies, such as specialoptical glass elements and PENTAX-original lens coatings, they are designed to assure exceptional optical performance and deliver clear, high-contrast images, even at image-field edges.Designed to produce powerful telephoto images, the smc PENTAX-DA 300mm F4ED[IF] SDM is a uni-focal supertelephoto lens with a focal length equivalent to 460mm in the 35mm format. It minimizes chromatic aberrations — a common problem in telephoto lenses — by incorporating ED (Extra-low Dispersion) optical elements in its second and fifth lens. It also offers a minimum focusing distance of 1.4 m (4.6ft), which is the shortest in its product category.
• An extra-short minimum focusing distance of 0.45 meters over the entire zoom range• SDM mechanism, assuring extra-smooth, super-quiet autofocus operation using a supersonic motor installedin the lens (Conventional autofocus operation using a camera-installed motor is also possible.)• Dust-resistant, weather-resistant construction with a set of seals to prevent intrusion of dust and water into the lens• Inner Focus mechanism for effective compensation of various aberrations at all focusing distances• SP ( Super Protect ) coating applied to the front surface of the optics to block dust and dirt• Quick-Shift Focus system for instant switching to manual-focus operation after the subject is captured in focus by the AF system
