Sigma 50mm f/1.4 EX DG HSM Lens – Pentax K Mount – Fast AF Prime – Pro-Grade Optics

A premium fast prime lens designed for full-frame and APS-C Pentax DSLRs, the Sigma 50mm f/1.4 EX DG HSM delivers outstanding image quality, creamy bokeh, and professional-grade build. Known for its cinematic rendering and distinctive character, this lens is a favorite among portrait photographers and vintage lens enthusiasts.

Key Features:

• Focal Length: 50mm – ideal for portraits, low-light, and everyday shooting
• Maximum Aperture: f/1.4 – excellent for shallow depth of field and available light photography
• Optical Design: 8 elements in 6 groups, including one molded glass aspherical element
• Diaphragm: 9 rounded blades – smooth, circular bokeh
• Minimum Focus Distance: 45cm (17.7")
• Maximum Magnification: 0.14×
• Filter Thread: 77mm – unusually large for a 50mm lens
• Mount: Pentax KAF3 – supports in-lens autofocus via HSM motor
• Dimensions: 84.5mm × 68.2mm
• Weight: Approx. 505g

Included:

• Front and rear lens caps
• Petal-shaped lens hood
• 77mm UV filter

Condition:

• Optics: Clean and clear, no haze or fungus
• Mechanics: Autofocus responsive, manual focus override smooth
• Cosmetics: Excellent with light signs of use

User Notes:

• Compatible with Pentax DSLRs that support SDM/HSM autofocus
• Delivers soft, cinematic rendering wide open with excellent center sharpness
• Performs reliably on mirrorless bodies with adapters and focus peaking
• Often preferred over Sigma’s later Art version for its organic character and lighter build

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