Ricoh發表了自家全新的中片幅型號Pentax 645Z，在規格上帶來了5140萬畫素的畫面水準，還有可折疊的3.2吋LCD視窗，以及高達ISO 204,800的感光值，高檔規格十分夠水準。
除了硬體規格優異之外，Pentax 645Z也提供了3 fps的連拍能力，以及1080/60i的FHD錄影能力；此外Pentax 645Z也有著防塵、防水、防寒…的防護等級。而因應當前行動載具盛行，Pentax 645Z也加入了對於Pentax FluCard無線傳輸記憶卡的支援，透過Pentax FluCard可讓手機、平板、電腦等裝置直接透過無線方式存取資料，讓瀏覽更為便利。
隨著Pentax 645Z一同發布的還有13款645系列鏡頭。而目前Pentax 645Z預計在今年6月正式上市，機身建議售價為8499美元，約合新台幣254,970元，而搭配55mm鏡頭的Kit組售價約為9617美元，約合新台幣288,510元，相當高貴。
Pentax 645Z規格列表：
| Price | | | MSRP | $8499.95 / £6799.99 (body only), £7699.99 (with 55mm lens) | | Body type | | | Body type | Large SLR" | | Body material | Magnesium alloy | | Sensor | | | Max resolution | 8256 x 6192 | | Other resolutions | 6912 x 5184, 5376 x4032, 1920 x 1080 | | Image ratio w:h | 4:03 | | Effective pixels | 51 megapixels | | Sensor photo detectors | 53 megapixels | | Sensor size | Medium format (44 x 33 mm) | | Sensor type | CMOS | | Processor | PRIME III | | Color space | sRGB, AdobeRGB | | Color filter array | Primary color filter | | Image | | | ISO | AUto, ISO 100-204800 | | White balance presets | 10 | | Custom white balance | Yes (3 slots) | | Image stabilization | No | | Uncompressed format | RAW + TIFF | | JPEG quality levels | Superfine, fine, normal | | File format | JPEG (Exif 2.3) | | | RAW (PEF/DNG) | | | TIFF | | Optics & Focus | | | Autofocus | Contrast Detect (sensor) | | | Phase Detect | | | Multi-area | | | Selective single-point | | | Tracking | | | Single | | | Continuous | | | Face Detection | | | Live View | | Autofocus assist lamp | No | | Manual focus | Yes | | Number of focus points | 27 | | Lens mount | Pentax 645AF2 | | Focal length multiplier | 0.8× | | Screen / viewfinder | | | Articulated LCD | No | | Screen size | 3.2″ | | Screen dots | 1,037,000 | | Touch screen | No | | Screen type | TFT LCD | | Live view | Yes | | Viewfinder type | Optical (pentaprism) | | Viewfinder coverage | 98% | | Viewfinder magnification | 0.62× | | Photography features | | | Minimum shutter speed | 30 sec | | Maximum shutter speed | 1/4000 sec | | Exposure modes | Program | | | Sensitivity Priority | | | Shutter Priority | | | Aperture Priority | | | Shutter and Aperture Priority | | | Manual | | | Bulb | | Built-in flash | No | | External flash | Yes | | Flash modes | Flash On, Flash On+Red-eye Reduction, Slow-speed Sync, Slow-speed Sync+Red-eye, P-TTL, Trailing Curtain Sync, contrast-control-sync, high-speed sync, wireless sync | | Flash X sync speed | 1/125 sec | | Drive modes | Single-shot, continuous high, continuous low, self-timer, remote, multi-exposure, interval shooting, interval composite | | Continuous drive | 3 fps | | Self-timer | Yes (2 or 10 secs) | | Metering modes | Multi | | | Center-weighted | | | Spot | | Exposure compensation | ±5 (at 1/3 EV, 1/2 EV steps) | | AE Bracketing | ±5 (2, 3, 5 frames at 1/3 EV, 1/2 EV, 1 EV, 2 EV steps) | | Videography features | | | Resolutions | 1920 x 1080 (60i, 50i, 30p, 25p, 24p), 1280 x 720 (60p, 50p, 30p, 25p,24p) | | Format | MPEG-4, H.264 | | Microphone | Mono | | Speaker | Stereo | | Storage | | | Storage types | Dual SD/SDHC/SDXC slots | | Connectivity | | | USB | USB 3.0 (5 GBit/sec) | | HDMI | Yes (mini-HDMI) | | Microphone port | Yes | | Headphone port | No | | Remote control | Yes | | Physical | | | Environmentally sealed | Yes (Weather and dust sealed, freezeproof to -010C/+14F) | | Battery | Battery Pack | | Battery description | D-LI90 lithium-ion battery and charger | | Battery Life (CIPA) | 650 | | Weight (inc. batteries) | 1550 g (3.42 lb / 54.67 oz) | | Dimensions | 156 x 117 x 123 mm (6.14 x 4.61 x 4.84″) | | Other features | | | Orientation sensor | Yes | | Timelapse recording | Yes | | GPS | Optional | | GPS notes | via O-GPS1 |
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