Pentax K20D SLR Review

By Movable Type Admin


Click for our main menu

PENTAX K20D




Weather Resistance, Shake Reduction, Dust Removal,
Lens Mount, AF System and Lenses




Weather Resistance

PENTAX K20D

Seals around the durable K20D body protect the inner components against moisture and dust particles. The fiber-reinforced polycarbonate body surrounding the high-rigidity, stainless steel chassis provides plenty of strength for every day use.



The K20D is protected by 72 seals and the optional battery grip with an additional 38 seals assuring complete protection against humidity, dust, sand or whatever might penetrate the body. Durable and solid, the stainless-steel chassis is also impermeable to corrosion and is extremely stable.


Shake Reduction

PENTAX's Shake Reduction technology solves one of the oldest photographic problems: blur caused by handheld camera shake. The K Series Digital SLR produces sharp photos in challenging situations without having to use a tripod. Hand-held photography is now possible with long telephoto lenses or when long exposure times are required due to low lighting levels.




The Shake Reduction (SR) system is integrated into the camera body and is independent of the lens in use. At the moment of exposure the compensating movement of the image sensor provides blur-free pictures. The advantage is obvious: you may increase your handheld shooting by 2.5 to 4 stops.


PENTAX K20D

Over 30 patents have been filed for this SR system, which uses a ball bearing mounted oscillator unit with four electromagnets that hold the free-floating image sensor. Angular velocity sensors detect camera movement and relay the amount of compensation necessary to the electromagnets that move the sensor to compensate for any shake.





14.6-megapixel CMOS Image Sensor

PENTAX K20D

The K20D has 14.6-megapixel CMOS Sensor (complementary metal-oxide-semiconductor) measuring 23.4 mm x 15.6 mm. PENTAX has worked to expand the light-sensitive area of the CMOS while narrowing the camera's depth for an overall downsizing of the K20D. The sensor is designed bring out the optimum performance of PENTAX interchangeable lenses while keeping digital noise to a minimum. By automatically raising its own sensitivity, it works to increase the sensitivity from ISO 100 to the highest level of ISO 6400 when required. Coupled with a high-performance imaging engine incorporating PENTAX-original image processing technologies programmed to capture natural, true-to-life images, the K20D assures fine-detailed, rich-gradation images.





PRIME Image Processing

PENTAX K20D

PENTAX created the PRIME (PENTAX Real IMage Engine) system to match the performance requirements of higher resolution sensors. The PRIME engine converts the digital signal into the image you desire by assuring truer color tones, a wider dynamic range, and natural looking high ISO images. PRIME strives to provide results similar to what you see shooting with film.



Dust Removal System

The Dust Removal system on the K20D is a marvel of technology. The surface of the low pass filter is sealed with a nanotechnology-based fluorine coating so dust has a difficult time adhering to the sensor surface. Any dust that remains is shaken off when the SR system shifts the CMOS at high speed. The dust that is shaken off the CMOS, then falls onto an adhesive sheet eliminating any possibility of its returning to the CMOS surface. Dust spots are now a thing of the past, along with annoying and time consuming retouching work.



11-Point TTL AF System

PENTAX K-Series cameras feature an 11-point autofocus system. In automatic operation (AUTO) the camera recognizes which object is nearest and chooses that object as the main focus point. For more direct control, select any of the 11 points individually. It is also possible to simply select the center of the image as your main point of focus. With Continuous Autofocus, the focus points adjust as your subject moves within the frame, or should you prefer more direct control, you may always focus manually.





PENTAX Lens Mount

PENTAX K20D

The K20D has an electronically controlled, vertical run, focal plane shutter offering shutter speeds from 1/4000 to 30 seconds with a Bulb setting available.


PENTAX K20D

PENTAX has manufactured over 24 million lenses in the last six decades so there's a lens for any requirement you have. PENTAX dSLR bodies offer backward compatibility with each and every one of these lenses (adapter required for screw mount and 645/67 lenses). Choose from an assortment of new DAH, DA Limited and DA lenses specifically designed for use with PENTAX digital SLRs or grab your favorite glass from your camera bag.

Five new lens models, all developed specifically for PENTAX digital SLR, were released with the K20D. The complete line of lenses currently contains 22 models. Each new lens features a Quick-shift Focus System for instant switching from auto focus to manual and the PENTAX SP coating that protects the exposed lens elements from grease and dust.

The new lenses, U.S. MSRP pricing and shipping dates are:

  • smc PENTAX DA 200mm f/2.8 ED (IF) SDM - $1099.95
  • smc PENTAX DA 300mm f/4 ED (IF) SDM will ship in May 2008 for $1299.95
  • smc PENTAX DA 55-300mm f/4-5.8 ED will ship in May 2008 for $399.95
  • smc PENTAX DA 35mm f/2.8 Macro Limited - $599.95
  • smc PENTAX DA 18-55mm f/3.5-5.6 AL II - $199.95

    Each PENTAX DA series lens features a tightly sealed, weather-resistant and dust-resistant construction to enhance durability for use in rainy or dusty conditions - making each a perfect companion for the weather-sealed K20D . The lenses also feature the PENTAX original Quick-Shift Focus System for instant switching to manual focus operation and PENTAX original SP (Super Protect) coating to repel dust, water and grease. A new SDM system has been incorporated for smoother, quieter autofocus operation using a built-in supersonic motor.

    Following are more details on some of the new DA-series lenses.



    PENTAX DA 200mm f/2.8 ED (IF) SDM

    PENTAX DA 200mm


    The high performance DA 200mm ED (IF) lens incorporates an SDM system which creates a smoother, quieter auto focus. Featuring a Quick-shift Focus System, switching from auto focus to manual is instantaneous. Developed specifically for PENTAX digital SLRs, the DA 200mm ED (IF) SDM lens has PENTAX SP coating which protects the exposed lens elements, and a focal length equivalent to 300mm in the 35mm format. Weather and dust resistant, it's the perfect lens for extreme weather conditions




    PENTAX DA 300mm f/4 ED (IF) SDM

    PENTAX DA 300mm



    The high performance DA 300mm ED (IF) lens incorporates an SDM system which creates a smoother, quieter auto focus. Featuring a Quick-shift Focus System, switching from auto focus to manual is instantaneous. Weather and dust resistant, it’s the perfect lens for extreme weather conditions. Developed specifically for PENTAX digital SLRs, the DA* 300mm ED (IF) SDM lens has PENTAX SP coating which protects the exposed lens elements, and a focal length equivalent to 450mm in the 35mm format.



    PENTAX DA 55-300mm f/4-5.8 ED

    PENTAX DA 55-300mm

    The versatile DA 55-300mm ED zoom lens offers an extreme telephoto zoom range, perfect for those moderate to long shots. ED elements compensate for chromatic aberration, while the PENTAX SP coating protects the exposed lens elements. Developed specifically for PENTAX digital SLRs, the DA 55-300mm ED zoom has a focal length equivalent to 82.5mm to 450mm in the 35mm format.



    PENTAX DA 35mm f/2.8 Macro Limited

    PENTAX 35mm Macro

    The compact DA 35mm Macro Limited lens provides one-to-one magnification in a normal focal length. High-grade aluminum construction of lens barrel, hood and cap provides utmost durability. With its incorporated Quick-shift Focus System, switching from auto focus to manual is instantaneous. Developed specifically for PENTAX digital SLRs, the DA 35mm Macro Limited has PENTAX SP coating which protects the exposed lens elements, and a focal length equivalent to 52.5mm in the 35mm format.



    PENTAX DA 18-55mm f/3.5-5.6 AL II



    The DA 18-55mm II is the ideal zoom lens for a wide range of shooting applications, covering a wide to moderate wide-angle. This lens has improved resolution to match with high resolution sensors and PENTAX SP coating which protects the exposed lens elements. Developed specifically for PENTAX digital SLRs, the DA 18-55mm II has aspherical elements to compensate for spherical aberration, and a focal length equivalent to 27mm to 82.5mm in the 35mm format.







  • Continue on to
    Page Three







    Return To Our
    Reviews Menu











    Visitors of Steves can visit the stores below for real-time pricing and availability. You can also find hot, soon to expire online offers on a variety of cameras and accessories at our very own Camera Deals page.

    Buy related cameras and accessories from Amazon.com
    Related Product Description Price
    Nikon D5200 24.1 MP CMOS Digital SLR with 18-55mm f/3.5-5.6 AF-S DX VR NIKKOR Zoom Lens (Black) Nikon D5200 24.1 MP CMOS Digital SLR with 18-55mm f/3.5-5.6 AF-S DX VR NIKKOR Zoom Lens (Black) $600.00
    Canon 8407B001 POWERSHOT S120 BLK 12.1MP 5X OPT 3.0IN LCD Canon 8407B001 POWERSHOT S120 BLK 12.1MP 5X OPT 3.0IN LCD $549.99
    Nikon D3200 Digital SLR Camera with 18-55mm AF-S DX VR (Black) + SLR Gadget Bag + Wireless Remote 10pc Nikon Saver Bundle Nikon D3200 Digital SLR Camera with 18-55mm AF-S DX VR (Black) + SLR Gadget Bag + Wireless Remote 10pc Nikon Saver Bundle $526.95
    Sony Cyber-Shot DSC-RX100 Digital Camera, Black - with 16GB SDHC Memory Card, Camera Case, Spare Sony NP-BX1 Battery, Mini Tripod, New Leaf 3 Year Warranty, Professional Lens Cleaning Kit - Includes 7 Items Sony Cyber-Shot DSC-RX100 Digital Camera, Black - with 16GB SDHC Memory Card, Camera Case, Spare Sony NP-BX1 Battery, Mini Tripod, New Leaf 3 Year Warranty, Professional Lens Cleaning Kit - Includes 7 Items $525.95
    Canon EOS Rebel T3 12.2 MP CMOS Digital SLR with 18-55mm IS II Lens (Black) & Canon EF-S 55-250mm f/4.0-5.6 IS Telephoto Zoom Lens Package Canon EOS Rebel T3 12.2 MP CMOS Digital SLR with 18-55mm IS II Lens (Black) & Canon EF-S 55-250mm f/4.0-5.6 IS Telephoto Zoom Lens Package $525.69
    Pentax BG2 Battery Grip for Pentax K10D and K20D DSLR Cameras (Retail Packaging) Pentax BG2 Battery Grip for Pentax K10D and K20D DSLR Cameras (Retail Packaging) $245.99
    Pentax D-LI50 Li-Ion Rechargeable Battery for Pentax K10D and K20D Digital SLR Cameras (Retail Packaging) Pentax D-LI50 Li-Ion Rechargeable Battery for Pentax K10D and K20D Digital SLR Cameras (Retail Packaging) $59.95