Pentax 20-40mm f/2.8-4 ED Limited DC WR HD DA

Lens Reviews / Pentax Lenses i Lab tested
Lens Specifications
Name Pentax 20-40mm ƒ/2.8-4 ED Limited DC WR HD DA
Image Circle APS-C
Type Standard Zoom
Focal Length 20 - 40mm
APS Equivalent 30.5 - 61.5mm
Max Aperture ƒ/2.8 - 4
Min Aperture ƒ/22 - 32
Diaphragm Blades 9 (rounded)
Lens Construction 9 elements in 8 groups, including 1 ED and 1 SLD element
Diagonal Angle of View(Based on image circle) 70 to 39 degrees
Focus Details Quick-shift Focus; DC focus motor
Front Element Rotation No
Zoom System Rotary
Closest Focus 28cm / 0.9 ft.
Magnification Ratio 0.20x / 1:5
Filter Size 55mm
Dimensions(Length x Diameter) 68.5mm x 71.0mm / 2.7 in. x 2.8 in.
Weight 283g / 10 oz
Notes HD coating, SP (Super Protect) coating; Weather-resistant construction; Accessories include: metal hood, objective cap, soft lens case. Available in black or silver.
Typical Online Price US$1,000