Pentax 645D Medium Format 40 Megapixel Digital SLR Camera Body, 3.0" TFT Color LCD, NTSC, PAL

SKU: IPX645D MFR: 17971
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About the Pentax 645D

The Pentax 645D is an interchangeable medium-format digital SLR camera with a 40-megapixel, 44x33mm Kodak CCD sensor that is approximately 1.7 times larger than a 35mm sensor. Its high-resolution images are rich in gradation and have high dynamic range that can faithfully describe complex textures.

But the 645D is about much more than just resolution: It brings the cost of the medium-format "look" down to a level that more photographers can afford. In his review of the Pentax 645D for the Adorama Learning Center Sandy Ramirez writes: "For the very discerning professional, it's not only about resolution. There is a "look" to Medium Format that cannot be achieved easily with a 35mm full-frame camera, and certainly not with an APS-C camera. This look is due to the fact that the larger sensor (and in the old days film size) requires longer focal lengths and image circles to achieve the same field of view as a 35mm based system. This leads to a shallower depth of field than 35mm-based and APS-based systems."

The 645D is unlike any other Medium Format Digital Single-Lens Reflex (MFDSLR) camera currently in production. While other systems are usually adaptations of old film bodies to digital technology, the 645D is a ground-up digital reinvention of the old 645N II. While it may look like your old film camera, it certainly is not.

The Pentax 645D is definitely a fully digital beast. Bristling with 19 separate controls, almost any parameter can be modified without ever having to get into the menus. While having that many control points sounds daunting, in actual operation the controls are so well laid out, they never really get in the way. Most buttons or knobs only control one parameter, making adjusting the camera to various shooting conditions quite simple, almost second nature.

Another surprise that comes from the complete reinvention is the 645D's AF system. Unlike every other MFDSLR, the Pentax 645D has 11 cross type AF points. While the top of the line Canons and Nikons may have more, for MFDSLRs Pentax is king of the hill in this regard. No other MFDSLR has as advanced an AF system. The selection between the three separate AF modes is handled by one of the dedicated 19 control switches on the 645D.

Overall, the 645D's handling is excelletn, providing all the most important controls directly to the touch. Want to adjust bracketing? There is a dedicated button for that. Want to switch between which memory card you are shooting to? There is a dedicated button for that. Want to quickly switch from shooting RAW to JPEG or vice versa? There is a dedicated button for that as well, and it's even configurable between JPEG, RAW+JPEG and RAW dependent on what your preferred sh ooting style is.

Metering mode? Separate dial switch for that as well as Mirror Lock up, Configurable X-Sync switch, White Balance and White Balance Shift on separate controls and even an additional "Green Button" that can configured to your heart's desire.

Image quality:
The Pentax 645D's high ISO performance is on par with most modern DSLRs, which for the most part puts it ahead of the vast majority of other MFDSLRs that are now on the market. Where this comes in handy is when shooting JPEGs. The JPEG engine on the 645D is quite good, producing very detailed images with little chroma noise at all ISOs up to 1600, with 3200 showing just a tiny bit of noise. Color response is quite good, with the possible exception of the Tungsten setting that tends to be a bit too aggressive creating a slight blue cast. In these situations either shoot a white card or dial in a direct Kelvin reading.

The Pentax 645D represents an amazing value in the Medium Format Digital sector. The Image Quality is on par with similar models from Leica and Phase One, and with it's plethora of available lenses a system that hits the ground running. Its modern controls are a refreshing change from the uneasy truce that most digital backs provide.

Pentax 645D Includes

  • Pentax 645D Medium Format Digital SLR Camera
  • AC Plug Cord
  • Battery Charger
  • Rechargeable Li-ion Battery D-LI90
  • USB Cable
  • Strap
  • Large Eye Cup O-EC107
  • Hot Shoe Cover
  • Body Mount Cap
  • Software CD-ROM
  • Pentax Warranty

Summary of Customer Reviews

Customers most agreed on the following attributes:
Best Uses:
Landscape/scenery (3)
Reviewer Profile:
Casual photographer (1) , Photo enthusiast (1) , Pro photographer (1)

Pentax 645D Features

  • Magnesium alloy covers around a rigid aluminum diecast chassis adds durability and thermal stability while minimizing weight
  • A 40 Megapixel medium format (44x33mm) CCD sensor provides a top resolution of 7264x5440 pixels
  • Large, 3 inch LCD screen with 921,000 dots of resolution
  • Fully weather sealed and coldproof design resists rain, snow, dust, and other environmental hazards during field use, to keep the camera operating at peak performance levels
  • Consecutive shooting up to 1.1 frames per second at full 40 megapixel resolution
  • Deep, 14 Bit RAW files in PENTAX PEF and Adobe DNG formats
  • Highly sensitive 77 segment metering system quickly and accurately determines exposure in even the most complex lighting
  • All-glass, trapezoid pentaprism viewfinder with interchangeable focusing screens offers a 98% field of view viewing angle for accurate framing applications
  • Mirror dampening hardware applies a braking action to the mirror swing
  • ISO 100-1600 provides great existing-light photo capture with outstanding noise performance
  • Highly responsive and accurate 11 point SAFOX IX+ autofocus system features a light wavelength sensor for improved focus speed and reliability, even within different lighting environments
  • Compatibility with new D FA autofocus lenses as well as older 645 lenses ensures a wide selection of PENTAX glass for a wide range of photographic applications
  • Dual slot SD/SDHC memory card support
  • A Digital Level function displays the vertical and horizontal inclination of the camera

Pentax 645D Specifications

Type TTL autofocus, auto-exposure medium format digital SLR camera
Effective Pixels 40 megapixels
Sensor CCD with primary color filter
Size: 44mm x 33mm
Total Pixels: 40.01 megapixels
Dynamic Range 11.5 f-stops
Recorded Pixels Still: JPEG: L[40M]7264x5440 pixels, M[32M]6528x4896 pixels, [21M]5376x4032 pixels, S[13M]4224x3168 pixels, [7M]3072x2304 pixels
RAW: [40M]7264x5440 pixels
Sensitivity Auto:200-1000, Extended from 100 to 1600 (1,1/2 or 1/3EV steps)
Recording Formats Still: RAW (PEF/DNG), JPEG (Conforms to Exif 2.21)
Conforms to DCF (Design rule of Camera File system) 2.0
Image Formats RAW (14 bit): PEF, DNG
RAW + JPEG: available
Storage Media SD, SDHC memory card (Dual slot)
Lens Mount PENTAX 645AF2 bayonet mount
Usable Lens PENTAX 645AF2, 645AF and 645A mount lenses
Focusing System Type SAFOX IX+ TTL phase-matching 11 point autofocus system with indication in finder
Focus Mode AF Single, AF Continuous
Focus Point Auto, User-Selectable, Center
Superimpose Available
Metering System TTL open aperture, 77 segment metering
Metering Modes (1) Multi-segment metering
(2) Center-weighted metering
(3) Spot metering
Metering Range EV 2-21 (at Standard Output Sensitivity 200 with 55mm F2.8)
Exposure Modes Program, Sensitivity Priority, Shutter Priority, Aperture Priority, Shutter & Aperture Priority, Manual, Bulb, Flash X-sync Speed
Exposure Compensation ±5EV (1/3 steps)
AE Lock Yes
Playback Modes Mode Selection: 1 Image, 2 Images, 4 Images, 9 Images, 16 Images, 36 Images, 81 Images, Enlargement (up to 32X, scroll available), Image Rotation, Folder view, Slideshow, Histogram, Resize, Cropping, Bright/Dark area, Calendar view, Index view
Digital Filter Playback: Monochrome, Extract Color, Color, Base Tweaking, Soft
White Balance Auto, Daylight, Shade, Cloudy, Fluorescent Light ( D, N, W, L), Tungsten Light, Flash, CTE, Manual setting 1, Manual setting 2, Manual setting 3, Color temperature setting (3 types) with WB fine adjustment
Custom Image Bright, Natural, Portrait, Landscape, Vibrant, Muted, Reversal Film, Monochrome
Shutter Type: Electronically controlled vertical-run focal plane shutter
Shutter Speed: Auto:1/4000 - 30 sec, Manual:1/4000 - 30 sec (1/3 EV steps or 1/2 EV steps), bulb
Drive Modes Mode selection: Single-frame, Continuous (Hi, Lo), Self-timer (12s, 2s), Remote control (0s, 3s ), Remote Continuous Shooting, Interval, Multiple Exposure, Exposure Bracketing, Extended Bracketing
Continuous shooting: approx. 1.1 fps on both Slot 1 and Slot 2
RAW(PEF)+JPEG: until approx. 13 fps
RAW(PEF): until approx. 13 fps,
RAW(DNG): until approx. 13 fps,
JPEG: until approx. 13 fps
Mirror Lock-up shooting: available by dedicated dial
Viewfinder Type: Trapezoid prism finder
Standard Focusing screen: Natural-Bright-Matte
Field of view: Approx. 98%
Magnification: approx. 0.62 x (with D FA645 55mmF2.8 at infinity),
approx. 0.85 x (with FA645 75mmF2.8 at infinity)
Diopter adjustment: -3.5 - +2.0m-1
Depth of Field Preview Optical preview, Digital preview
LCD Monitor 3.0" TFT color LCD monitor with brightness/color adjustment and AR coating, reinforced glass
Resolution: 921,000 dots
Wide angle viewable: Yes
Flash Synchronization Hot shoe, X-sync socket, sync-speed: 1/125 sec., P-TTL, high-speed-sync, wireless-sync with PENTAX dedicated external flash
Dust Removal Type: DR II (ultrasonic vibration to low pass filter) with Dust Alert function
Time World Time: 75 cities (28 time zones)
Interfaces USB2.0 (Hi-Speed: mini B type), Video output (mini phone type), HDMI output (type C mini), DC input, Cable switch, X-sync socket
Video Output NTSC, PAL
Power Sources Rechargeable Li-Ion battery D-LI90, D-BG4 Battery Grip (optional) for 2nd D-LI90 battery or 6X AA batteries
Rechargeable D-LI90 lithium-ion battery
Optional AC adapter also available.
Recordable images: approx. 800 (23 deg.C), approx. 700 (0 deg.C), approx. 650 (-10 deg.C)
Playback time: approx. 440 minutes (23 deg.C), approx. 400 minutes (0 deg.C), approx. 380 minutes (-10 deg.C)
Dimensions (W x H x D) 156 x 117 x 119 mm (6.1 x 4.6 x 4.7 inches)
Weight Without battery or removable memory: 1400 g (49.4 oz.)
Loaded and ready: 1480 g (52.2 oz.) loaded and ready with battery and two SD memory cards
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