PENTAX HD D FA 21MM F/2.4 ED LIMITED DC WR BLACK
The lens optics incorporates four ED (Extra-low Dispersion) glass and one Super ED (Extra-low Dispersion) glass optical elements to minimize chromatic aberration and prevent color bleeding, not only in the main in-focus area, but also in the surrounding defocused areas. It also features a large-aperture negative meniscus optical element, a biconvex aspherical glass-mold optical element, and a high-refraction glass optical element in the first lens group, to reduce the overall size despite the ultra-wide-angle design, while delivering outstanding imaging performance for sharp, crisp images without fuzziness, even in the peripheral areas.The lens also features PENTAX-original HD Coating.This lens incorporates an electromagnetic diaphragm mechanism (lens features the KAF4 mount, and is compatible with electromagnetic diaphragm control) to assure high-precision exposure control when used in combination with compatible digital SLR cameras. It assures smooth, worry-free video shooting in locations prone to considerable brightness changes, such as a stage with rapidly changing lighting conditions, or a forest with filtering sunray.For use in demanding conditions - such as at waterfronts or in sudden rainfall - the lens features a dependable weather-resistant construction. By pairing it with a PENTAX weather-resistant digital SLR camera body, the user can create a highly dependable, airtight digital imaging system that performs superbly even in the most demanding shooting locations - in rain or mist, or at locations prone to splashing water. SP (Super Protect) Coating to keep the lens front surface free of dust or stains. Built-in motor to drive the AF mechanism for smooth, quiet autofocus operation. Eight-blade circular diaphragm to produce beautiful light beams with point light sources, while creating a natural, beautiful bokeh (defocus) effect at open and larger apertures. QFS/A (Quick-Shift Focus System) for instant shift to the manual-focus mode without requiring focus-mode switching operations, after the subject has been captured in focus by the camera's autofocus system.
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1. How to choose the right lens for your DSLR camera?
Choosing the right lens for your DSLR camera depends on your photography style and preferences. If you enjoy portrait photography, a prime lens with a wide aperture (low f-number) can create beautiful background blur. For versatility, a standard zoom lens is a great option. Assess your needs and select lenses with features that align with your photography goals.
2. What are DSLR camera lenses, and what are their features?
DSLR camera lenses are specifically designed for DSLR (Digital Single-Lens Reflex) or SLT (Single-Lens Translucent) systems. These lenses have a compact design and are optimized for effective operation with DSLR cameras. They feature complex optical constructions that allow capturing high-quality images. DSLR lenses come in various focal lengths, from wide-angle lenses suitable for landscapes to long telephoto lenses ideal for sports or wildlife photography.
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