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Review: Pentax K20D

By admin ⋅ July 9, 2008 ⋅  Send this to a friend.. ⋅  Print this article. ⋅ Post a comment ⋅ Add to Technorati Favorites

The new Pentax K20D camera is equipped with 14.6 mega pixel CMOS sensor that resembles its quality. The Pentax K20D offers a similar light-sensitive area, per pixel, to a 12MP chip of conventional design. This camera offers a live-view mode that provides a zoom able, live preview directly from the imaging sensor.

Key features

• 14.6 megapixel CMOS sensor
• Live view mode
• 2.7 inch 230,000 dot LCD (up from 2.5 in. 210,000)
• Burst mode, allows 21fps shooting at 1.6MP resolution (up to 115 frames)
• Dynamic range expansion mode
• X-sync flash socket
• Image parameter settings (Custom image), enhanced
• Color adjustable LCD monitor
• Compare mode in playback
• 32x zoom in playback
• Adjustable levels of High ISO noise reduction
• Senstivities up to ISO 3200 (extendable to 6400), rather than ISO 1600
• Dust alert for locating particles on the sensor
• Pixel mapping to identify and correct for dead pixels
• AF fine-tuning (for all lenses or up to 20 chosen lenses)

Specification

Street price
• Body only: £730 / $1300
• Kit with 18-55 mm lens: £800 / N/A

Body build
• High-impact plastic with metal sub-structure
• Dust and weather resistant seals throughout

Sensor
• 14.6 million effective pixels*
• 15.1 million total pixels*
• 23.4 x 15.6 mm CMOS sensor
• RGB Color Filter Array
• Built-in low-pass filter
• 3:2 aspect ratio

Shake Reduction
• Sensor-shift system
• Permanent magnets and electronic magnet coils
• Can compensate in x, y direction and rotational

Dust removal
• SP coating
• Dust removal by shaking sensor (using SR unit)
• Dust alert mode to help locate dust*

Image processor
• PRIME
• “14-bit ADC”
• DDR2 buffer RAM

Image sizes
• 4672 x 3104 (14.5 MP)*
• 3872 x 2592 (10.0 MP)
• 3008 x 2000 (6.0 MP)
• 1824 x 1216 (2.2 MP)

Image formats
• JPEG (EXIF 2.21) - Premium* / Best / Better / Good
• RAW (PEF or DNG) + JPEG

Lens mount
• Pentax KAF2 bayonet mount
• Pentax KAF3, KAF2, KAF or KA mount lenses
• Pentax K mount lenses with restrictions

Focusing
• 11-point TTL sensor (SAFOX VIII)
• Center 9-points are sensitive to both horiz and vert. detail
• AF working range: -1 to 18 EV (at ISO 100, F1.4 lens)

Focus modes
• AF Single (AF-S)
• AF Continuous (AF-C)
• Manual focus

AF point selection
• Single Area AF
• Dynamic Area AF
• Auto Area AF

AF assist Stroboscopic flash

Metering
• 16 segment sensor
• Metering range: EV 0.0 - 21 EV (ISO 100, 50 mm F1.4)

Metering modes
• Multi-segment
• Center-weighted average
• Spot

Aperture values
• 1/3 or 1/2 EV increments
• Actual aperture range depends on lens used
• Ability to use lens aperture ring

Preview function
• Live view with magnify option*
• Depth-of-field Optical (lens stopped down)
• Digital (shot taken without saving, previewed on LCD)

White balance
• Auto
• Daylight
• Shade
• Cloudy
• Fluorescent (Daylight, Neutral, White)
• Tungsten
• Flash
• Manual
• Color temperature (3 memories) - Kelvin or Mired

WB shift
• Blue (-7) To Amber (+7)
• Magenta (-7) to Green (+7)

Color space
• sRGB
• Adobe RGB

Custom image settings
• Bright
• Natural
• Portrait
• Landscape
• Vibrant
(All with adjustment for Saturation, Hue, Contrast and Sharpness)
• Monochrome
(with adjustment for Filter type, Toning, Contrast and Sharpness)

Image parameters
• Saturation: -3 to +3
• Hue: -3 to +3
• Contrast: -3 to +3
• Sharpness: -3 to +3 (Fine sharpening option)

Viewfinder
• Eye-level pentaprism
• 95% frame coverage
• Magnification: 0.95x (with 50 mm F1.4 lens at infinity)
• Dioptre adjustment: -2.5 to +1.5 dioptre
• Natural Bright Matte II focusing screen

Viewfinder info

• AF points
• Focus confirmation dot
• Flash ready
• Shutter speed
• Aperture
• E-dial enabled
• AE lock
• Remaining shots/ISO sensitivity (custom function)
• EV compensation
• Flash compensation
• Manual focus
• Shake Reduction
• Metering / EV bar

Shooting modes
• Auto (Green mode)
• Hyper-program (P)
• Sensitivity priority (Sv)
• Shutter priority (Tv)
• Aperture priority (Av)
• Shutter & Aperture priority (TAv)
• Hyper-manual (M)
• Bulb (B)
• Flash X-Sync (X)
• User defined (USER)

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