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Pentax Q series

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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] The 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

The small sensor size means that the Q series has a crop factor of 5.6× (or 4.7x for the Q7 and Q-S1) 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

Pentax Q

Further information: Pentax Q

The initial model was announced in June, 2011.

Pentax Q10

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

Pentax Q7

Further information: Pentax Q7

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.[citation needed] The camera is able to compensate automatically by using only the centre of the sensor when using these lenses.[citation needed]

Pentax Q-S1

Further information: Pentax Q-S1

The Q-S1 was announced August 4, 2014. It has a 1/1.7" sensor, and comes in 4 standard color combinations, with 36 additional body and grip color combinations available.

Lenses

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, Q-S1) 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 7.1 - 8 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

References

  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.

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