The Pentax DA 20-40mm F2.8-4 HD ED Limited DC WR has a double optical zoom through which it ensures a maximum diaphragm of F2.8 in wide angle mode.Together with its sleek construction, this lens also has an HD coating and fully round diaphragm. With its silent autofocus, powered by a special autofocus motor, you can make beautiful photographs even in bad weather conditions.
The Pentax DA 20-40mm F2.8-4 HD ED Limited DC WR offers a focal length of 30.5mm to 61.5mm( on a 35mm camera) to be used on a digital camera from the Pentax K series with interchangeable lenses. The flexibility of the range, the large diaphragm, and the weatherproof housing makes this lens ideal for everyday use.
Specifications of the Pentax DA 20-40mm F2.8-4 HD ED Limited DC WR :
- Lens constructed from: 9 elements in 8 groups
- Shortest focussing distance: 0,28 m
- High Definition Coating
- Integrated AF motor
- Reliable, Weather proof Construction
- Filter diameter: 55 mm
Limited lens series for clear and sharper images
The design of this lens is a legacy of the Limited Lens series. This lens has an optical system that naturally reflects depth and at the same time minimizes the distortion around the edges of the whole zoom area. Photographers can capture the image right from the start, adding softer light by a adding a larger diaphragm, and increasing the sharpness by adding a smaller diaphragm. The lens cylinder, hood and lens cap are made from high quality aluminum, they are textured, and formed by hand to fit perfectly. The zoom ring, which is in the middle of the lens cylinder, has a number of notches which makes using the zoom even easier.
High Quality Optical Technology
The lens is treated with a Pentax developed HD coating, a high quality coating with multiple layers. This reduces reflection in the visible light spectrum over fifty percent more effectively than traditional multi layered coatings. This puts the user in a position to create well contrasted and sharp images, without blurring or ghosting, even in adverse lighting conditions. The lens also contains an ED glass element( Extra-low Dispersion) and a super-low dispersion glass element for a clear, higher resolution with 100% sharpness. This lens also compensates for color deviation in the entire zoom range.
The First Weather Proof lens in the Limited Lens Series
This lens is the first model in the Limited Lens Series with a weather proof construction, with seven special seals to protect the lens from water and moisture in the lens interior. When the lens is attached to a weather proof digital mirror reflex camera from Pentax, the user is ensured higher durability and reliability while taking photos in the rain, mist or anywhere there is a risk of splashing water.