Pentax Q series

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Pentax Q
Pentax Q 01n2000.jpg
Pentax Q with zoom lens
Maker Pentax
Type Mirrorless
Image sensor type BSI-CMOS sensor
Image sensor size 1/2.3″ (1/1.7″ for Q7), 12.4 megapixel
Recording medium SD, SDHC, SDXC
Maximum resolution 4:3 native: 4000 x 3000, 3456x2592, 2688x2016, 1920x1440
Lens mount Pentax Q-mount, bayonet, stainless steel mount
Focus autofocus with manual override
Flash built-in: P-TTL, popup extension, GN 7m, 1/2000 s sync (leaf shutter), 1/13 s (electronic); external P-TTL, 1/250 s sync
Frame rate 5-frame burst; 1.5fps sustained
Shutter electronic, leaf shutter in lens where applicable
Shutter speeds 30 s to 1/2000 s mechanical; 2 s to 1/8000 s electronic
Viewfinder optional optical suitable for 8.5mm f1.9 lens
Custom WB auto, CTE, manual set; presets: daylight, shade, cloudy, fluorescent (D, N, W, L), tungsten, flash; fine adjustment available in all modes
Rear LCD monitor 360x320x4 luminance-R-G-B HVGA; color LCD
Storage none included
Battery proprietary, rechargeable li-ion battery, Pentax D-LI68
Dimensions 98 x 57 x 31 mm
(3.86 x 2.24 x 1.22")
Weight 180 g (0.40 lb / 6.35 oz)
Data Port(s) USB 2.0
Body composition or special features mechanical sensor-shift image stabilization (photography); electronic image stabilization (video)
Made in Philippines
Video/movie recording 1920x1080 30fps, 1280x720 30fps, 640x480 30fps

The Pentax Q series is a series of mirrorless interchangeable-lens cameras made by Pentax and introduced in 2011 with the initial model Pentax Q.[1] As of September 2012, it is the world’s smallest, lightest interchangeable lens digital camera.[2] First models used a 1/2.3" (6.17 x 4.55 mm) back-illuminated sensor CMOS image sensor, which is substantially smaller than the sensors in other interchangeable lens cameras. The Q7, introduced in June 2013, uses an almost 50% larger 1/1.7" type sensor (7.44 x 5.58 mm).[3]

Characteristics[edit]

The small sensor size means that the Q series has a crop factor of 5.6× (or 4.7x for the Q7) and a short flange focal distance (FFD). With the 5.6× crop factor, a 100 mm macro lens (for example) becomes a (35 mm equivalent) 560 mm extreme telephoto or an extreme close-up lens capable of 1:1 macro reproduction. An additional implication of the 5.6x crop factor and associated optics is that depth of field (DOF) is increased proportionally for a given aperture setting (in comparison to the 35mm equivalent depth of field at the corresponding aperture). In some applications this gives the Pentax Q an advantage over more conventional mirrorless sensor formats, which offsets other limitations arising from the smaller sensor size. Moreover the Pentax Q includes bokeh functions to provide additional control over DOF effects so that shallow focus can be achieved if required.

The short FFD of the Pentax Q series allows the use of third-party adapters to mount lenses from many manufacturers on the Pentax Q body, including Olympus OM, Canon FD, Minolta, M42 screw mount, C-Mount, D-Mount, Pentax K, and Pentax 6×7.[4] A Pentax adapter for Pentax K-mount lenses was announced for delivery in the spring of 2012, but was delayed until October, 2012.[5]

The camera is equipped with sensor-shift image stabilization technology to improve image quality in low light or when using telephoto lenses.

Models[edit]

Pentax Q[edit]

The initial model was announced in June, 2011.

Pentax Q10[edit]

Announced in September, 2012, the Q10 has a slightly redesigned body and an improved sensor.[6] Most features and specifications were unchanged.

Pentax Q7[edit]

The Q7 was announced in June 2013 and has a larger 1/1.7" sensor.[7]

Without viewfinder, Pentax Q7 is smaller than the rival Canon PowerShot G15 with optical viewfinder which both have the same sensor size. Pentax Q7 available with 6 grip colors and 20 body colors makes combination of 120 camera colors.[8]

The camera is compatible with all Q mount lenses. Due to the larger sensor size, the camera cannot use the whole sensor when using a few lenses. The camera is able to compensate automatically by using only the centre of the sensor when using these lenses.

Lenses[edit]

Eight lenses have been released for the Pentax Q. As of June 2013, no third-party manufacturer had released lenses for the Q-mount, however with the use of third party adapters including C-Mount and D-Mount adapters to suit cine (16mm and 8mm format respectively) lenses many other lenses can be used with the Q and Q10. Pentax lenses released for the Q system are as follows:

Mfg. Lens Type Focal Length 35mm Equiv (Q, Q10) 35mm Equiv (Q7) Max. Aperture Min. Aperture Leaf Shutter Year
Pentax 01 Standard Prime AF/MF, single-focal 8.5 mm 47 mm 40 mm 1.9 8 yes 2011
Pentax 02 Standard Zoom AF/MF, varifocal 5–15 mm 28–83 mm 23–70 mm 2.8-4.5 8 yes 2011
Pentax 03 Fisheye MF, single-focal 3.2 mm 18 mm 15 mm 5.6 5.6 no 2011
Pentax 04 Toy Lens Wide MF, single-focal 6.3 mm 35 mm 29 mm 7.1 7.1 no 2011
Pentax 05 Toy Lens Telephoto MF, single-focal 18 mm 99 mm 83.7 mm 8 8 no 2011
Pentax 06 Telephoto Zoom AF/MF, varifocal 15–45 mm 83–249 mm 70–209 mm 2.8 8.0 yes 2012
Pentax 07 Mount Shield Lens Fixed focus, single focal 11.5 mm 64 mm 53 mm 9 9 no 2013
Pentax 08 Wide Zoom AF/MF, varifocal? 3.8-5.9 mm 21.3–33 mm 17.5–27 mm 3.7 4.0 yes 2013
Pentax Adapter Q for K-Mount Lens n/a n/a n/a n/a n/a n/a yes 2012

See also[edit]

References[edit]

  1. ^ Pentax Q small-sensor mirrorless camera announced and previewed
  2. ^ Pentax Q - 180 g; Nikon J1 - 234 g; Olympus E-PM1 - 265 g
  3. ^ "Pentax announces Q7 with larger 12MP BSI CMOS sensor". Digital Phtography Review. Retrieved 7 December 2013. 
  4. ^ "Lens Adapters | B&H Photo Video". Bhphotovideo.com. Retrieved 2013-06-16. 
  5. ^ "Pentax Adapter Q for K-mount Lenses". PhotographyBLOG. 2012-09-11. Retrieved 2013-06-16. 
  6. ^ "Pentax Ricoh introduces Q10 small-sensor mirrorless camera: Digital Photography Review". Dpreview.com. Retrieved 2013-06-16. 
  7. ^ "Pentax announces Q7 with larger 12MP BSI CMOS sensor: Digital Photography Review". Dpreview.com. Retrieved 2013-06-16. 
  8. ^ Allison Johnson. "Pentax Q7 Review". Retrieved January 8, 2014. 

External links[edit]