If you're serious about getting better image quality in your photos, the Pentax 645D Digital SLR Camera (Body Only) can move you pretty far along that road: with a format similar to the film 645 system (44 x 33mm), this camera delivers a stunning 40MP of resolution in a package not much larger than top-of-the-line DSLRs (6.1 x 4.6 x 4.7"/15.5 x 11.68 x 11.93 cm and 49 oz/1389 g).
JPG (8-bit depth) and RAW (14-bit depth) files offer superb image quality. The 645D is compatible with all Pentax 645AF2 bayonet mount lenses. It has an 11-point autofocus system and 77-segment metering system, an all-glass trapezoid pentaprism viewfinder, and a 3" LCD display.
A full range of white balance, exposure and playback options are available, as well as sensitivity from 100-1600 ISO, and in-camera HDR image capture that automatically takes 3 images and blends them into a single photo to more accurately represent the range of light intensity levels found in real scenes. A Lens Correction function automatically compensates for lateral chromatic aberration, as well as barrel and pincushion distortion common to wide angle lens photography, with select Pentax 645 lenses.
The 645D can capture 1.1 frames per second at full resolution, and offers mirror lock-up, multi-exposure, bracketing and interval functions also. The rugged magnesium alloy body is weather-sealed and cold-proof to resist rain, snow, dust, etc. It has dual memory card slots (SD/SDHC) for convenience, and operates on a single rechargeable Li-Ion battery. Look closely--you'll see the difference.
Sensor: Total pixels approx. 40.01 megapixels Type CCD with a primary color filter Size 44mm x 33mm Pixel size 6.0 µm x 6.0 µm Lens Mount: PENTAX 645AF2 bayonet mount Focus System: Type TTL phase difference detection, 11-point autofocus system (SAFOX IX+) Focus Mode AF-single, AF-continuous Focus Point Auto, Select, Center Superimpose available Viewfinder: Type: Trapezoid prism finder Focusing screen Natural-Bright-Matte focusing screen Field of view: approx. 98% Diopter adjustment: approx. -3.5 - +2.0m-1 Magnification: approx. 0.62 x (with D FA645 55mmF2.8 at infinity),approx. 0.85 x (with FA645 75mmF2.8 at infinity) LCD Monitor: Type: TFT color LCD monitor, Wide angle view, Brightness adjustable, Color adjustable, AR Coating, Reinforced glass Size:3.0 inch Dots:approx. 921,000 dots Built-in Flash: N/A External Flash: Hot shoe, X-sync socket, sync-speed: 1/125 sec., P-TTL, high-speed-sync, wireless-sync with PENTAX dedicated external flash Storage Media: SD, SDHC memory card (Dual slot) 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 Power Supply: Rechargeable D-LI90 lithium-ion battery Optional AC adapter also available. Physical Specifications: Dimensions: approx. 156(W) x 117(H) x 119(D)mm (6.1 x 4.6 x 4.7 inches) Weight: approx. 1480 g (52.2 oz.) loaded and ready with battery and two SD memory cards, approx. 1400 g (49.4 oz.) without battery and SD memory card. Language Support: N/A Image Stabilization: N/A Metering System: Metering System TTL open-aperture 77-segment metering Metering Mode (1) Multi-segment metering, (2) Center-weighted metering, (3) Spot metering Exposure Range EV 2-21 (at Standard Output Sensitivity 200 with 55mmF2.8) Modes (1) Program AE, (2) Sensitivity-Priority AE, (3) Shutter-Priority AE, (4) Aperture-Priority AE, (5) Shutter and Aperture Priority AE, (6) Metered Manual, (7) Bulb, (8) X speed Exposure Compensation ±5EV AE Lock availiable ISO Sensitivity: Auto:200-1000, Extension:100, 1600 (1EV steps or 1/2EV steps or 1/3EV steps) 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 Shutter: Auto:1/4000 - 30 sec, Manual:1/4000 - 30 sec (1/3 EV steps or 1/2 EV steps), bulb Capture Modes: Single-frame, Continuous (Hi, Lo), Self-timer (12s, 2s), Remote control (0s, 3s ), Remote Continuous Shooting, Interval, Multiple Exposure, Exposure Bracketing, Extended Bracketing Drive Modes: 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, RAW(PEF)+JPEG(40M at ???): until approx. 13 fps, RAW(PEF): until approx. 13 fps, RAW(DNG): until approx. 13 fps, JPEG(40M at ???): until approx. 13 fps Mirror Lock-up shooting available by dedicated dial Playback Modes: 1 Image, 2 Image, 4 Image, 9 Image, 16 Image, 36 Image, 81 Image, Enlargement (up to 32X, scroll available), Image Rotation, Folder view, Slideshow, Histogram, Resize, Cropping, Bright/Dark area, Calendar view, Index view File Formats: RAW(14 bit): (PEF/DNG), JPEG: ???(Best), ??(Better), ?(Good), RAW+JPEG: available Custom Functions: Bright, Natural, Portrait, Landscape, Vibrant, Muted, Reversal Film, Monochrome