Pentax-FA SMC 50mm f/1.4 Classic, lens

A fast normal-length prime featuring an old-school retro design, the Pentax SMC PENTAX-FA 50mm f/1.4 Classic Lens offers a bright maximum aperture in a highly compact and portable form factor. Constructed with optical elements to cover the full-frame image circle of all K-mount cameras, this lens produces unique image renditions commonly created by lenses designed 50 years ago. When set to wide apertures and against strong backlight, the lens produces a unique visual effect commonly known as rainbow flare. In order to assist in creating this effect, a 49mm ND filter is included with the lens. Additionally, it retains the retro exterior design of the original SMC PENTAX-FA 50mm f/1.4 with a black matte finish and a matte-black focus ring.

Lens Design

A normal-length prime optimized for full-frame Pentax K-mount cameras, the lens can also be used with APS-C models where it provides an approximate equivalent focal length of 75mm. Fully compatible with all K-mount DSLR cameras and K-mount film-format cameras, this lens allows you to retain all camera functions. Bright f/1.4 maximum aperture contributes to both low-light performance as well as offering precise control over depth of field. An eight-blade diaphragm control mechanism produces soft and natural bokeh from f/1.4 to f/2.8 while also minimizes the streaking effect of point light sources. Well-suited for a wide variety of subjects including street photography and portraiture, this prime lens offers a minimum focusing distance of 45 cm and allows you to easily capture nearby subjects.

Distinctive Imaging Characteristics

Through intentional fine-tuning of the lens design, this lens produces a unique visual effect known as rainbow flare when it captures an image at wide-open apertures and against strong backlight. It lets you change the position and size of rainbow flare by shifting the relative position of the subject and light source, creating a unique visual expression not common with modern lenses. In order to assist in creating this effect, a 49mm ND filter is included with the lens.

Specifications

• Maximum aperture: f/1.4
• Minimum aperture: f/22
• Bayonet: Pentax K
• Lens format coverage: full-frame
• Angle of view: 47°
• Minimum focal length: 45 cm
• Maximum magnification: 0.15x
• Optical design: 7 elements in 6 groups
• Membrane blades: 8, rounded
• Focus type: autofocus
• Image stabilization: none
• Filter size: 49 mm
• Dimensions (ø x L): 65 x 37 mm
• Weight: 216 g