Pentax DA 55mm f/1.4 ED IF SDM Lens

The technical details behind this lens
The Pentax DA 55mm f/1.4 ED IF SDM Lens is a short telephoto prime lens with an aperture range of F22 to F1.4 and an aperture diaphragm consisting of nine blades. Its optical design includes 11 elements in eight groups, including super-low-dispersion optical elements, ED lens elements, and PENTAX original lens coatings. It also features "Aero Bright" internal lens for improved light transmission with reduced ghosting and flaring. It is also incorporated with Quick-Shift Focus system and SDM autofocus motor.
Brilliantly bright
The Pentax DA 55mm f/1.4 ED IF SDM Lens boasts of its bright and wide F1.4 maximum aperture setting, enabling users to shoot in low-light conditions. It also has "Aero Bright" internal lens that improves light transmission.
Fast and smooth
The Pentax DA 55mm f/1.4 ED IF SDM Lens features a Quick Switch mechanism that allows instant switch from AF to MF just by twisting the ring and Supersonic Drive Motor for quick and quiet autofocusing.
Resistant housing
The Pentax DA 55mm f/1.4 ED IF SDM Lens features a dust- and moisture-resistant housing. This characteristic allows users to easily clean their lenses from dust and moisture.
Key Features

Completely rounded aperture diaphragm from f/1.4-2.8
SP water and dirt-repelling coating
Dust and moisture-resistant housing
"Aero Bright" internal lens
Top three reasons we think you will love this lens

Compact
Great for low light events
Awesome for portrait
Includes

Pentax DA 55mm f/1.4 ED IF SDM Lens
PH-RBH Lens Hood for SMC DA 55mm f/1.4 SDM Lens
O-LC58 58mm Lens Cap
Rear Lens Cap (B) for Bayonet Mount Lenses
Lens Case S90-100 (Soft)
Our expert’s opinion
The Pentax DA 55mm f/1.4 ED IF SDM Lens is an impressive lens in every aspect – from optical design and mechanisms to housing and coatings. This lens takes it all – brilliant, sharp, and bright photos through its optical design, wide aperture setting, and fast AF motor. This lens is perfect for doing portraits, capturing still life, and taking pictures in low-light circumstances.