This lens has been designed to minimize internal reflections, through the use of materials carefully selected for the black coating applied to the inside of the lens barrel. It also suppresses color bleeding, by effectively controlling spherical aberration at each wavelength through the application of high-grade lens coatings.
This lens uses the FREE system that moves only the front group while keeping the rear group stationary in the lens system when focusing. This enables stable imaging performance from near to far distances.
The lens body uses an aluminum material for providing a design with a sense of elegance and precision. The camera body uses "finger points" made of a green Shippo-yaki material* for providing a firmer gripping sensation.
The design was based on the numerical evaluation by various testing instruments and also incorporates advanced evaluation using actual images. The result is an appropriate softness at aperture opening, and as the aperture closes, enables sharp imaging performance and rendering that provides a sense of space, gradations, and three-dimensional feel.
FREE system for focusing
Impressive delineation performance
Design with a sense of elegance and precision
Machined aluminum lens barrel to optimize the texture of the material
A large aperture and a compact, lightweight design simultaneously achieved to defy conventional performance evaluations
Exclusively designed lens hoods and slip-on caps to match the character of individual lenses
Every lens barrel and all exterior components of the PENTAX Limited-series lenses are meticulously machined from high-grade aluminum material to optimize the high-quality visual design and the feel when the photographer touches them.
With FA Limited-series lenses, however, PENTAX has succeeded in achieving these two contradicting goals simultaneously, by making them compact and easy-to-handle through effective control of aberrations, while optimizing the sense of depth and sharpness in resulting images.
The lens hood eliminates the need for a reversal of position when the lens is stored, and also lets you start photographing immediately simply by removing the cap from the front end of the lens.