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6.9 out of 10 based on 91 reviews

Pentax 645D

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  • User Score (59)
    9.1 9.1 from 59 reviewers
  • Expert Score (12)
    8.2 8.2 from 12 reviewers
  • Value for money (2)
    6.9 6.9 from 2 reviewers
  • Features (2)
    7.1 7.1 from 2 reviewers
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  • WikiFreak Description

Pentax 645D

The Pentax 645D is a auto-exposure medium format digital SLR that supports TTL autofocus, 40 megapixels effective pixel via its CCD sensor with a primary color filter that measures 44mm x 33mm, has a pixel size of 6.0 μm x 6.0 μm, 11.5f – stops dynamic range, and saves images in JPEG and RAW file format. The camera also support ISO sensitivity of up to 1600, has a dual slot for SD and SDHC memory card, has white balance adjustments, a trapezoid prism view finder, Natural-Bright-Matte foc…

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Pentax 645D

The Pentax 645D is a auto-exposure medium format digital SLR that supports TTL autofocus, 40 megapixels effective pixel via its CCD sensor with a primary color filter that measures 44mm x 33mm, has a pixel size of 6.0 μm x 6.0 μm, 11.5f – stops dynamic range, and saves images in JPEG and RAW file format. The camera also support ISO sensitivity of up to 1600, has a dual slot for SD and SDHC memory card, has white balance adjustments, a trapezoid prism view finder, Natural-Bright-Matte focusing screen, 98% field of view, a 3.0 inch TFT color LCD monitor with wide angle view, adjustable brightness and color, AR Coating, and reinforced glass. The camera supports several Playback Mode, image editing, superimpose function, Metering Mode, 1/4000 - 30 seconds shutter speed; and an image sensor cleaning function that utilizes supersonic vibration (DR II) with dust alert function. The Pentax 645D is powered by a rechargeable D-LI90 lithium-ion battery and is compatible with PENTAX 645AF2, 645AF, and 645A mount lenses. It measures 6.1 x 4.6 x 4.7 inches and weighs 52.2 oz.

Features

The Pentax 645D is a medium format SLR camera that supports super-high-resolution images via its 40 effective megapixels CCD sensor. The sensor measures 44mm by 33mm, and is 1.7 times larger a 35mm-format sensor. The camera is also supported by PRIME II imaging engine with high-speed data-processing capacity and an algorithm programmed for medium-format digital SLR cameras, producing images with optimized gradation and color reproduction, and supports data transmission of large-volume image data such as RAW-format images as large as 50 MB per file. The Pentax 645D also supports 14-bit A/D converter for conversion of image data to digital signals. Designed in a magnesium-steel alloy form factor, the camera’s chassis is made of diecast aluminum to minimize the expansion and extension caused by heat and also to optimize kinematic accuracy and thermal stability. The LCD panel is covered with tempered glass plates for protection, and the body features dust-proof, weather-resistant construction with 70 seals, cold-resistant performance for operation at a temperature as low as –10°C, and a shutter unit with a top shutter speed of 1/4000 second that can withstand as many as 50,000 shutter releases. The Dual SD/SDHC memory card slots supports on the camera gives the photographer extra data-storage options to assigned recorded images to different cards according to recording format (such as RAW or JPEG), or utilize one card as the backup of the other. Other features on the camera include DR II mechanism to minimize dust spots, 11-point wide-frame AF sensor with SAFOX IX + wide-frame autofocus system, 77-segment multi-pattern metering for optimized light metering; a trapezoid-shaped glass prism view finder for approximately 98% field of view.

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