Pentax Q series

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The Pentax Q series was 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 was 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. The Q7, introduced in June 2013, uses a larger 1/1.7" type sensor (7.44 x 5.58 mm).[3]


The Q series small sensor size means that it has a crop factor of 5.6× (or 4.7× for the Q7 and Q-S1) and a short flange focal distance (FFD) of 9.2mm. With the 5.6× crop factor, an adapted 100mm lens has the equivalent field of view (FOV) of a 560mm telephoto in the 35mm full-frame format. An additional implication of the 5.6× crop factor is that depth of field (DOF) is increased proportionally for any given aperture setting. This gives the Pentax Q an advantage over larger formats in some situations that can offset the other limitations that arise from its smaller sensor size. The original Q has 12.4 Megapixels with 1.52 µm pixel pitch.

The short FFD of the Pentax Q series enables lenses from many manufacturers to be adapted to it, including: Olympus OM, Canon FD, Minolta, M42 screw mount, M39 Leica, C-Mount, D-Mount, Pentax K, and Pentax 6×7.[4] A Pentax adapter with a synchronized shutter for Pentax K-mount lenses was released in October 2012.[5]

The camera is equipped with 'SR' sensor-shift image stabilization technology to improve image quality when using the camera without a tripod. It works with all native and adapted lenses. The Pentax Q also features a "blur" mode to provide a pseudo shallow focus effect when desired.


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] It is available in a wide variety of colors.

Pentax Q-S1[edit]

The Q-S1 was announced August 4, 2014. It has a 1/1.7" sensor. In addition to the Q-7 features, it has auto focusing in the video mode (with the 01, 02 and 08 lenses.)


Eight lenses have been released in the Pentax Q system:

Mfg. Lens Type Focal Length 35mm Equiv (Q, Q10) 35mm Equiv (Q7, Q-S1) Max. Aperture Min. Aperture Leaf Shutter Filter Diameter Year
Pentax 01 Standard Prime AF/MF, single-focal 8.5 mm 47 mm 40 mm 1.9 8 yes 40.5mm 2011
Pentax 02 Standard Zoom AF/MF, varifocal 5–15 mm 28–83 mm 23–70 mm 2.8-4.5 8 yes 40.5mm 2011
Pentax 03 Fisheye MF, single-focal 3.2 mm 18 mm 15 mm 5.6 5.6 no n/a 2011
Pentax 04 Toy Lens Wide MF, single-focal 6.3 mm 35 mm 29 mm 7.1 7.1 no n/a 2011
Pentax 05 Toy Lens Telephoto MF, single-focal 18 mm 99 mm 83.7 mm 8 8 no n/a 2011
Pentax 06 Telephoto Zoom AF/MF, varifocal 15–45 mm 83–249 mm 70–209 mm 2.8 8.0 yes 40.5mm 2012
Pentax 07 Mount Shield Lens Fixed focus, single focal 11.5 mm 64 mm 53 mm 9 9 no n/a 2013
Pentax 08 Wide Zoom AF/MF, varifocal? 3.8-5.9 mm 21.3–33 mm 17.5–27 mm 3.7 - 4 7.1 - 8 yes 49.0mm 2013
Pentax Adapter Q for K-Mount Lens n/a* See below** Approx. 5.6 times the

focal length of lens

Approx. 4.5 times the

focal length of lens

See below*** See below**** yes See below** 2012

Notes: *Any lenses adapted to the adapter will function in MF only. Whether it is single or varifocal depends on the optical characteristic of the lens.

**Although the adapter itself cannot have a focal length or filter diameter, the focal length/filter diameter for adapter/lens combination will depend on the lens attached.

***The maximum aperture depends on the lens aperture for most lenses. However, for larger-aperture lenses, since the adapter controls the aperture, the effective f-stop may increase or falloff may become more apparent.

****The minimum aperture depends on the adapter.

See also[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 Photography Review. Retrieved 7 December 2013. 
  4. ^ "Lens Adapters | B&H Photo Video". 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". Retrieved 2013-06-16. 
  7. ^ "Pentax announces Q7 with larger 12MP BSI CMOS sensor: Digital Photography Review". Retrieved 2013-06-16. 

External links[edit]