Pentax 12-24mm f/4 Lens Review by Gene Wright

Camera Lenses
 Pentax DA 12-24mm f/4 ED AL (IF) Wide Angle Zoom Lens

Pentax DA 12-24mm f/4 ED AL (IF) Wide Angle Zoom Lens

Description

The Pentax SMCP-DA 12-24mm f/4 ED AL lens was developed for exclusive use with Pentax digital SLR cameras, and is a compact, lightweight two-times zoom lens that offers an ultra-wide-angle perspective equivalent to 18.5mm to 37mm in the 35mm format.

The image circle in DA-series lenses is designed to perfectly match the 23.5mm x 15.7mm size of the CCD used in Pentax digital SLR cameras to optimize camera performance. This design also contributes to a drastic reduction in size, weight and production cost, compared to 35mm-format counterparts with similar specifications.

Note! Not suitable for 35mm film SLR cameras.

Features

• Extra-low Dispersion (ED) glass for superior sharpness and color correction
• Two aspherical elements
• Responsive "Quick-Shift Focus System" allows instant shift from AF to MF
• Internal Focus system makes focusing smoother and faster
• Durable metallic lens mount

Specifications
Overview
Lens styleZoom lens  
Max Format Size APS-C / DX  
Lens focal length12 – 24 mm  
Stabilization type No  
Camera mount Pentax KAF  
Angle of view 99 - 61°  
Aperture (lens diaphragm)
Largest aperture opening F4.0  
Smallest aperture opening F22.0  
Total diaphragm blades 8  
Optical
Total Elements 13  
Number of Groups 11  
Focusing
Minimum focus distance 0.30 m (11.81")  
Maximum magnification ratio 0.12 x  
Autofocus type Yes  
Lens motor Screw drive from camera  
Full time manual focus Yes  
Focusing method Internal  
Physical features
Overall weight430 g (0.95 lb) 15.2 oz  
Lens diameter 88 mm (3.44")  
Overall length 84 mm (3.31")  
Lens color Black  
Zooming method Rotary (extending)  
Filter thread size 77 mm  
Lens hood included Yes  
Tripod collar included No

Item Includes

• Pentax Zoom Super Wide Angle SMCP-DA 12-24mm f/4 ED AL (IF) Autofocus Lens
• Front & Rear Lens Caps
• PH-RBI77 Lens Hood
• 1-Year Warranty

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