Engineering:Pentax K-5 II

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Short description: Camera
Pentax K-5 II
K5 GPS GRIP DSC03814 smial wp.jpg
K-5 II with optional GPS unit and battery grip
Overview
TypeDigital single-lens reflex camera
Lens
LensInterchangeable Pentax KAF3 and KAF2 mount compatible with Pentax auto-aperture lenses; older lenses supported in stop-down metering mode
Sensor/medium
SensorAPS-C 23.7×15.7 mm CMOS sensor
Maximum resolution16.3 megapixels (4928×3264)
Film speedISO 100–12,800 in 1, 1/2, or 1/3 EV steps; expandable to ISO 80–51,200
Recording mediumSD, SDHC, SDXC[1] and, according to one source, microSD[2]
Exposure/metering
Exposure modesGreen (fully automatic), program, aperture priority, shutter priority, sensitivity priority, aperture and shutter priority, manual, bulb, X-sync shutter speed, five User presets.
Exposure meteringTTL open-aperture metering, 77 segments
Metering modesMulti-segment, Center-weighted, Spot
Flash
FlashOnboard 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
Shutter
Shutter speed range30–1/8000 s, Bulb
Continuous shootingUp to 7 fps
Viewfinder
ViewfinderEye-level pentaprism, near-100% coverage, 0.92× magnification
Image processing
Image processorPrime II
General
LCD screen3″, 921,000 dots (640×480 RGB pixels)
BatteryD-LI90 lithium-ion rechargeable battery
Optional battery packsD-BG4 battery grip accepts additional D-LI90 battery or 6 AA batteries
WeightWith battery: 760 g (1.68 lb)

The Pentax K-5 II is a 16.3-megapixel digital single-lens reflex camera, successor to the Pentax K-5, sharing its body shape with its two predecessors including the Pentax K-7, and making incremental improvements on the K-5.

Both models have improved autofocus ability, particularly in low and tungsten light, down to −3EV, which at the time of release makes it the best low-light autofocus camera.[3] Also improved is the sensitivity of the central AF area which now has an AF base of f/2.8 instead of the common f/5.6.[4] This increased AF base length helps to improve focus accuracy, in particular with fast (wide aperture) lenses and in low light.[5]

The Pentax K-5 II/IIs each have HD video capabilities, with resolutions of 1920×1080 (at 25 fps), 1280×720 (at 25 & 30 fps), 640×480 (at 25 & 30 fps).

Externally, the cameras are distinguished by a recessed screen, where the K-5 had a flush-mounted one.[6] The K-5II/IIs has a gapless design—the typical air gap is avoided by the use of a special resin—helps to reduce internal reflections and gives better visibility in bright light.[7] The material of the screen has been changed from plastic to tempered glass, which is scratch resistant.[8][9] Like its predecessor, the K-5 II/IIs is fully weather-sealed.[7]

It has the highest camera sensor rating of any Pentax APS-C camera, according to DxO Labs, with a score of 82.[10]

Pentax K-5 IIs

The Pentax K-5 IIs is a version of the K-5 II which omits the traditional low pass filter for greater sharpness but potentially greater moiré.

Bundling

The K-5 II/IIs are available in two different kits, one including the DA 18–55 mm WR lens, and the other the DA 18–135 mm WR lens, as well as a body only.[7]

References

  1. "Pentax K-5 II: Digital Photography Review". Dpreview.com. http://www.dpreview.com/products/pentax/slrs/pentax_k5ii. 
  2. Steve Harvath (2012-09-10). "Pentax K-5 II". Digital Trends. http://www.digitaltrends.com/digital-camera-reviews/pentax-k-5-ii-review/. 
  3. Angela Nicholson. "Pentax K-5 II and Pentax K-5 IIs: 10 things you need to know | News". TechRadar. http://www.techradar.com/news/photography-video-capture/cameras/pentax-k-5-ii-and-pentax-k-5-iis-10-things-you-need-to-know-1098700. 
  4. Pentax. "The new flagship model of the PENTAX K digital SLR camera series, featuring newly developed state-of-the-art AF sensor that boasts broadest AF working EV range range in its class*.". Pentax. http://www.pentax.jp/english/news/2012/20120911.html. 
  5. David Busch. "Mastering Digital SLR photography". Safari Books online. http://my.safaribooksonline.com/book/-/9781435458321/mastering-the-mysteries-of-focus/ch03lev1sec3. 
  6. "Pentax K-5 II Camera - First Shots". Imaging-resource.com. http://www.imaging-resource.com/PRODS/pentax-k5-ii/pentax-k5-iiA.HTM. 
  7. 7.0 7.1 7.2 "Pentax Ricoh announces Pentax K-5 II DSLR and K-5 IIs with no low-pass filter: Digital Photography Review". Dpreview.com. http://www.dpreview.com/news/2012/09/10/Pentax-Ricoh-announces-Pentax-K-5-II-DSLR-and-K-5-IIs-with-no-low-pass-filter. 
  8. "Pentax K-5 II and K-5 IIs refresh company's DSLR camera range". Pocket-lint. 2012-09-10. http://www.pocket-lint.com/news/47426/pentax-k-5-ii-k-5-iis-dslr-cameras. 
  9. "Announcement of PENTAX K-5 II and K-5 IIs | Pentax Support". Support.pentaximaging.com. 2012-09-10. http://support.pentaximaging.com/node/1272. 
  10. "Sensors Database - DxOMark". http://www.dxomark.com/Cameras/Ratings.