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(Top) 1 Characteristics 2 Models 2.1 Pentax Q 2.2 Pentax Q10 2.3 Pentax Q7 2.4 Pentax Q-S1 3 Lenses 4 See also 5 References 6 External links

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^[update], 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 system is now discontinued.^[4]

Characteristics

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The Pentax Q and Q10 sensors have a crop factor of 5.53×^[5] while the Pentax Q7 and Q-s1 have a crop factor of 4.65×.^[6] The original Pentax Q sensor has a 12.4 megapixels with 1.52 μm pixel pitch. All Pentax Q system cameras have a short flange focal distance (FFD) of 9.2mm. With a 5.53× crop factor, an adapted 100mm lens has the equivalent field of view (FOV) of a 553mm telephoto in the 35mm full-frame format. An additional implication of these relatively large crop factors is that depth of field (DOF) is proportionally increased relative to full-frame systems at the same equivalent focal length and aperture; this puts the Pentax Q system cameras at a distinct advantage when capturing as much as possible with acceptable focus is important.

Pentax Q system cameras do not have a mechanical shutter or neutral density filter in the camera body. Because of this, some lenses and adapters have a built-in mechanical leaf shutter and/or a built-in ND filter.

The short flange focal distance 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.^[7] A Pentax adapter with a synchronized shutter for Pentax K-mount lenses was released in October 2012.^[8]

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 control" mode to provide a pseudo shallow focus effect when desired.

Models

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Pentax Q

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The initial model was announced in June, 2011.

Pentax Q10

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Announced in September, 2012, the Q10 has a slightly redesigned body and an improved sensor.^[9] Most features and specifications were unchanged.

Pentax Q7

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The Q7 was announced in June 2013 and has a larger 1/1.7" sensor.^[10] It is available in a wide variety of colors.

Pentax Q-S1

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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.)

Lenses

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Eight lenses have been released in the Pentax Q system. (AF = Auto Focus, MF = Manual Focus):

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	39 mm	1.9	8	yes	40.5mm	2011
Pentax	02 Standard Zoom	AF/MF, varifocal	5–15 mm	27.5–83 mm	23–69 mm	2.8-4.5	8	yes	40.5mm	2011
Pentax	03 Fisheye	MF, single-focal	3.2 mm	17.5 mm	16.5 mm	5.6	5.6	no	n/a	2011
Pentax	04 Toy Lens Wide	MF, single-focal	6.3 mm	35 mm	33 mm	7.1	7.1	no	n/a	2011
Pentax	05 Toy Lens Telephoto	MF, single-focal	18 mm	100 mm	94 mm	8	8	no	n/a	2011
Pentax	06 Telephoto Zoom	AF/MF, varifocal	15–45 mm	83–249 mm	69–207 mm	2.8	8.0	yes	40.5mm	2012
Pentax	07 Mount Shield Lens	Fixed focus, single focal	11.5 mm	63.5 mm	53 mm	9	9	no	n/a	2013
Pentax	08 Wide Zoom	AF/MF, varifocal	3.8-5.9 mm	21–32.5 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.