| Maker: | Ricoh |
| Model: | Pentax K-5 |
| Kind: | Digital single-lens reflex camera |
| Sensor: | CMOS sensor |
| Sensor Type: | IMX071 |
| Sensor Size: | 23.7 × 15.7 mm APS-C |
| Sensor Maker: | Sony IMX071 |
| Res: | 16.3 megapixels (4928×3264) |
| Iproc: | Prime II |
| Lens: | Interchangeable Pentax KAF3 and KAF2 mount compatible with Pentax auto-aperture lenses; older lenses supported in stop-down metering mode |
| Shutterrange: | 30 – 1/8000 s, Bulb |
| Speedrange: | ISO 100–12,800 in 1, 1/2, or 1/3 EV steps; expandable to ISO 80–51,200 |
| Metering: | TTL open-aperture metering, 77 segments |
| Mmode: | Multi-segment, Center-weighted, Spot |
| Cont: | Up to 7 fps |
| Rearlcd: | 3″, 921,000 dots (640×480 RGB pixels) |
| Storage: | SD and SDHC; SDXC with firmware update 1.02 or later |
| Emode: | Green (fully automatic), program, aperture priority, shutter priority, sensitivity priority, aperture and shutter priority, manual, bulb, X-sync shutter speed, five User presets. |
| Flash: | Onboard pop-up flash; hot shoe for P-TTL flash units with high-speed sync support; PC socket for studio flashes; 1/180 s X-sync speed |
| Battery: | D-LI90 lithium-ion rechargeable battery |
| Dimensions: | 131×97×73 mm |
| Obp: | D-BG4 battery grip accepts additional D-LI90 battery or 6 AA (R6) batteries |
| Viewfinder: | Eye-level pentaprism, near-100% coverage, 0.92× magnification |
| Weight: | With battery: 750g Without battery: 670g |
The Pentax K-5 is a 16.3-megapixel digital single-lens reflex camera, announced on September 20, 2010.[1] It began shipping in mid-October 2010 and it was replaced by the Pentax K-5 II in the third quarter of 2012.[2]
Externally, the camera body is almost unchanged from the Pentax K-7 (the mode dial on the left side is slightly higher). The main improvements compared to the previous model are higher light sensitivity (ISO range between 80 and 51,200, high ISO performance with improved noise control); an increase in sensor resolution by nearly two megapixels; and an all-new autofocus subsystem, SAFOX IX+.
The use of a Sony sensor in the K-5 signalled a major departure from the Samsung sensor partnership.
The latest firmware release is 1.16.[3]
Consistent with previous Pentax models, there are many small improvements as well:
The K-5 can record video at 1080p full HD as well as at lower resolutions using the motion JPEG codec. Videos can be recorded at the following resolutions and frame rates:
DxO Labs gave the 16.3 MP Sony-built sensor a score of 82. This ranked at the time of testing, the highest ever for an APS-C sensor and ahead of several full-frame sensors such as the one used in the Nikon D3. One of the major factors was shadow noise and dynamic range (in raw mode, to bypass in-camera processing). However, the closely related sensor in the Nikon D7000 scored 80.[5]
Notable reviews: