Maker | Pentax |
---|---|
Technical data | |
Type | Zoom |
Focus drive | Screwdrive |
Focal length | 12-24mm |
Focal length (35mm equiv.) | 18-36mm |
Aperture (max/min) | Constant f/4 wide open, f/22 at narrowest |
Close focus distance | 12 inches (30 cm) |
Max. magnification | 0.12 |
Diaphragm blades | 8 |
Construction | 13 elements in 11 groups |
Features | |
Manual focus override | Yes |
Application | Architecture, interiors, landscape, large groups |
Physical | |
Diameter | 88 millimetres (3.5 in) |
Weight | 15.2 oz (430 g) |
Filter diameter | 77mm |
Accessories | |
Lens hood | PH-RBI 77MM |
Case | Lens Soft Case S80-120 |
Retail info | |
MSRP | 899.95 USD USD |
The smc PENTAX DA 12-24mm F4.0 ED AL (IF) is a wide angle zoom lens by Pentax for K mount.
A kit lens is a "starter" lens which can be sold with an interchangeable-lens camera such as a single-lens reflex camera. It is generally an inexpensive lens priced at the lowest end of the manufacturer's range so as to not add much to a camera kit's price. The kit consists of the camera body, the lens, and various accessories usually necessary to get started in SLR photography. A kit lens can be sold by itself outside of a kit, particularly the ones that are moderately expensive; for instance a kit lens included in a prosumer SLR kit is often marketed as an upgrade lens for a consumer SLR. In addition, retailers often have promotions of standalone low-end SLR bodies without the lens, or a package that bundles the SLR body with one or two more expensive lenses.
Pentax lenses were first badged as Takumar. The Takumar branded lenses were well respected for their line of Super Takumar, which designated the high performance coating applied to the lens as well as the optical formulas used to make them. The majority of the industry at the time was still satisfied with the variations of the "plumb" coating process and later some of the two and three layer processes as well. Asahi Pentax soon introduced the Takumar Super-Multi-Coated line of lenses which was a 7 layer process as the industry had just caught up with similar forms of 5 layer multi-coated optics. Eventually Asahi Optical and Pentax slowly shifted much of their lens production under the Pentax name and transitioned some of the successful designs that were first introduced under the Takumar name to use Asahi/Pentax badging as well as beginning to use the "smc" abbreviation. Eventually the Asahi partnership disappeared and the Pentax name became solely used. Pentax lenses saw many feature changes to answer the market, such as: incorporating "Auto-Aperture" with the M42, the light weight and compactness with the 'M' series, Aperture Priority overrides with the 'A' series, and Auto-Focus with the 'F' series. Modern Pentax lenses for digital SLR cameras have seen the elimination of the aperture ring completely as found on Pentax DA and D-FA series lenses. They use the Pentax KAF mount. All of these lenses have an autofocus feature, either operated from the camera body or from an internal SDM motor. Pentax compatible lenses are also made by third-party companies.
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