Pentax 100mm f/2.8 Macro Lens

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Crisp, Sharp Images with
No Flare and Ghosting.

Pentax 100mm f/2.8 WR D FA smc Macro Telephoto LensOptimized for DSLRs and compatible with film SLR cameras, the smc PENTAX-D FA 100mm f/2.8 WR Macro Lens is constructed with an aluminum housing and 6 weather seals (thus the WR designation) so you can shoot in almost any environment without risking internal damage to the lens. Optical elements are treated with the Pentax Super Protect multi-layer coating to lower surface reflection, reduce ultraviolet rays, and deliver clear, high-contrast images.

Plus, the configurations of its optical elements produce crisp, sharp images with no flare and ghosting. It also features a "Quick Shift" focusing system which allows you to easily switch between manual and AF modes.

Achieving life-size (1:1) magnification, this macro lens is ideal for the close-up photography including, but not limited to, nature, technical, medical or product applications. It is also great for portraiture. Its 8 rounded diaphragm blade configuration assists in producing out-of-focus areas of your images with a pleasing look.


• WR Weather-resistant design is ideal for use on popular PENTAX weather resistant DSLR bodies.

• Macro lens features a full 1:1 image magnification ratio (1X, Life Size).

• D FA series lens features a “full frame” design, compatible with PENTAX film and digital SLR cameras, but optically optimized for digital imaging.

• Rounded aperture blades improve bokeh at wide apertures for silky smooth background de-emphasis.

• PENTAX SP (Super Protect) coating on front lens element helps repel dust, water, and grease, while minimizingfingerprints.

• PENTAX Quick-Shift focus system instantly switches to manual focus with a simple twist of the focus ring.

• Body-controlled aperture improves weather resistant design, while maintaining quick access to full aperture control.

• Durable aluminum housing protects lens optics.

Lens stylePrime lens  
Max Format Size 35mm FF  
Lens focal length100 mm  
Stabilization type No  
Camera mount Pentax KAF  
Angle of view 16° with Pentax DSLR cameras
24.5° with Pentax SLR film cameras
Aperture (lens diaphragm)
Largest aperture opening F2.8  
Smallest aperture opening F32.0  
Includes aperture ring Yes  
Total diaphragm blades 8  
Aperture annotations rounded blades  
Total Elements 9  
Number of Groups 8  
Minimum focus distance 0.30 m (11.81")  
Maximum magnification ratio 1 x  
Autofocus type Yes  
Lens motor Screw drive from camera  
Full time manual focus Yes  
Focusing method Extending front  
Depth of field scale Yes  
Physical features
Overall weight340 g (0.75 lb) 12.2 oz  
Lens diameter 65 mm (2.56")  
Overall length 81 mm (3.17")  
Sealing Yes  
Lens color Black  
Filter thread size 49 mm  
Lens hood included Yes  
Tripod collar included No


Item Includes
• Pentax smc Pentax-D FA 100mm f/2.8 WR Macro Lens
• Lens Hood PH-RBE 49mm
• Lens Cap O-LC49 49mm
• Rear Lens Cap B
• Lens Soft Case

Sharp, Quiet Macro, very nice, May 1, 2010

By Budd Adams

This review is from: Pentax 100mm f/2.8 WR D FA smc Macro Lens for Pentax Digital SLR Cameras (Electronics)

This new WR Macro is as slick as they come: sharp, quiet, quick focus, but manually adjustable to pick the exact point you want to be the center of attention. I'm certainly glad I got a 100mm macro,(my first)as getting close to objects like flowers on the ground is easier given the greater distance-to-object possible for the same size image. Then there's also avoiding your own shadow. The blurred backgrounds are also exceptionally smooth turning leafy backgrounds into art backdrops that really add to the picture. A longer zoom macro would be even handier, but none I know can match the crisp image of this one.

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