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Pentax Q vs Samsung NX30

The Pentax Q and the Samsung NX30 are two digital cameras that were revealed to the public, respectively, in June 2011 and January 2014. Both the Pentax Q and the NX30 are mirrorless interchangeable lens cameras that are based on a 1/2.3-inch (Pentax Q) and an APS-C (NX30) sensor. The Pentax has a resolution of 12 megapixels, whereas the Samsung provides 20 MP.

Below is an overview of the main specs of the two cameras as a starting point for the comparison.

Headline Specifications
Pentax Q   Samsung NX30
Pentax Q Samsung NX30
Mirrorless system camera Mirrorless system camera
Pentax Q mount lenses Samsung NX mount lenses
12 MP, 1/2.3" Sensor 20 MP, APS-C Sensor
1080/30p Video 1080/60p Video
ISO 125-6400 ISO 100-25600
Viewfinder optional Electronic viewfinder (2359k dots)
3.0" LCD, 460k dots 3.0" LCD, 1036k dots
Fixed screen (not touch-sensitive) Swivel touchscreen
1.5 shutter flaps per second 9 shutter flaps per second
In-body stabilizationLens stabilization only
230 shots per battery charge360 shots per battery charge
98 x 57 x 31 mm, 180 g 127 x 96 x 58 mm, 375 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Pentax Q and the Samsung NX30? Which one should you buy? Read on to find out how these two cameras compare with respect to their body size, their imaging sensors, their shooting features, their input-output connections, and their reception by expert reviewers.

Body comparison

An illustration of the physical size and weight of the Pentax Q and the Samsung NX30 is provided in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive views from the front, the top, and the rear side are shown. All width, height and depth measures are rounded to the nearest millimeter.

The Pentax Q can be obtained in two different colors (black, white), while the NX30 is only available in black.

Size Pentax Q vs Samsung NX30
Compare Pentax Q versus NX30 top
Comparison Pentax Q or NX30 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Samsung NX30 is considerably larger (118 percent) than the Pentax Q. Moreover, the NX30 is substantially heavier (108 percent) than the Pentax Q. In this context, it is worth noting that neither the Pentax Q nor the NX30 are weather-sealed.

The above size and weight comparisons are to some extent incomplete since they do not consider the interchangeable lenses that both of these cameras require. Hence, you might want to study and compare the specifications of available lenses in order to get the full picture of the size and weight of the two camera systems.

The power pack in the NX30 can be charged via the USB port, which can be very convenient when travelling.

The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. If you would like to visualize and compare a different camera combination, just use the right or left arrows in the table to switch to the respective camera. Alternatively, you can also navigate to the CAM-parator app and make your selection from the full list of cameras there.

Camera Body Specifications
  Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
(CIPA)
Weather
Sealing
(yes/no)
Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Camera
Model
 
Pentax Q» 3.9 in 2.2 in 1.2 in 6.3 oz 230 n Jun 2011 649- i Pentax Q
 
Samsung NX30« 5.0 in 3.8 in 2.3 in 13.2 oz 360 n Jan 2014 999- i Samsung NX30
 
Fujifilm X10« » 4.6 in 2.8 in 2.2 in 12.3 oz 270 n Sep 2011 599- i Fujifilm X10
 
Nikon D5500« » 4.9 in 3.8 in 2.8 in 14.8 oz 820 n Jan 2015 899- i Nikon D5500
 
Nikon D3300« » 4.9 in 3.9 in 3.0 in 15.2 oz 700 n Jan 2014 499- i Nikon D3300
 
Olympus XZ-2« » 4.4 in 2.6 in 1.9 in 12.2 oz 340 n Sep 2012 599- i Olympus XZ-2
 
Olympus E-P3« » 4.8 in 2.7 in 1.3 in 13.0 oz 330 n Jun 2011 799- i Olympus E-P3
 
Olympus E-PL2« » 4.5 in 2.8 in 1.7 in 12.8 oz 280 n Jan 2011 599- i Olympus E-PL2
 
Olympus E-PL3« » 4.3 in 2.5 in 1.5 in 11.0 oz 300 n Jun 2011 599- i Olympus E-PL3
 
Olympus E-PL1« » 4.5 in 2.8 in 1.7 in 11.8 oz 290 n Feb 2010 599- i Olympus E-PL1
 
Olympus E-620« » 5.1 in 3.7 in 2.4 in 18.4 oz 500 n Feb 2009 699- i Olympus E-620
 
Panasonic GF3« » 4.3 in 2.6 in 1.3 in 9.3 oz 300 n Jun 2011 549- i Panasonic GF3
 
Panasonic G2« » 4.9 in 3.3 in 2.9 in 15.1 oz 360 n Mar 2010 599- i Panasonic G2
 
Panasonic GF2« » 4.4 in 2.7 in 1.3 in 10.9 oz 300 n Nov 2010 549- i Panasonic GF2
 
Sony A6400« » 4.7 in 2.6 in 2.0 in 14.2 oz 410 n Jan 2019 899 i i Sony A6400
 
Sony A6000« » 4.7 in 2.6 in 1.8 in 12.1 oz 360 n Feb 2014 599- i Sony A6000
 
Sony A3000« » 5.0 in 3.6 in 3.3 in 14.5 oz 470 n Aug 2013 329- i Sony A3000
Note: Measurements and pricing do not include easily detachable parts, such as interchangeable lenses or optional viewfinders.

Any camera decision will naturally be influenced heavily by the price. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The Pentax Q was launched at a markedly lower price (by 35 percent) than the NX30, which puts it into a different market segment. Normally, street prices remain initially close to the MSRP, but after a couple of months, the first discounts appear. Later in the product cycle and, in particular, when the replacement model is about to appear, further discounting and stock clearance sales often push the camera price considerably down. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.

 

Sensor comparison

The size of the sensor inside a digital camera is one of the key determinants of image quality. A large sensor will tend to have larger individual pixels that provide better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixel-units in a sensor of the same technological generation. Moreover, a large sensor camera will give the photographer more control over depth-of-field in the image and, thus, the ability to better isolate a subject from the background. On the downside, larger sensors are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Pentax Q features a 1/2.3-inch sensor and the Samsung NX30 an APS-C sensor. The sensor area in the NX30 is 1218 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 5.6 and 1.5. The sensor in the Pentax Q has a native 4:3 aspect ratio, while the one in the NX30 offers a 3:2 aspect.

Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors.

Pentax Q and Samsung NX30 sensor measures

With 20MP, the NX30 offers a higher resolution than the Pentax Q (12MP), but the NX30 nevertheless has larger individual pixels (pixel pitch of 4.30μm versus 1.53μm for the Pentax Q) due to its larger sensor. Moreover, the NX30 is a much more recent model (by 2 years and 6 months) than the Pentax Q, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixel-units. Coming back to sensor resolution, it should be mentioned that the NX30 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Samsung NX30 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the NX30 for good quality output (200 dots per inch) amounts to 27.4 x 18.2 inch or 69.5 x 46.3 cm, for very good quality (250 dpi) 21.9 x 14.6 inch or 55.6 x 37.1 cm, and for excellent quality (300 dpi) 18.2 x 12.2 inch or 46.3 x 30.9 cm. The corresponding values for the Pentax Q are 20 x 15 inch or 50.8 x 38.1 cm for good quality, 16 x 12 inch or 40.6 x 30.5 cm for very good quality, and 13.3 x 10 inch or 33.9 x 25.4 cm for excellent quality prints.

The NX30 has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

The Pentax Q has a native sensitivity range from ISO 125 to ISO 6400. The corresponding ISO settings for the Samsung NX30 are ISO 100 to ISO 25600 (no boost).

Pentax Q versus NX30 MP

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service is based on lab testing and assigns an overall score to each camera sensor, as well as ratings for dynamic range ("DXO Landscape"), color depth ("DXO Portrait"), and low-light sensitivity ("DXO Sports"). Of the two cameras under consideration, the NX30 offers substantially better image quality than the Pentax Q (overall score 29 points higher). The advantage is based on 3.3 bits higher color depth, 1.3 EV in additional dynamic range, and 2.4 stops in additional low light sensitivity. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.

Sensor Characteristics
  Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Camera
Model
 
Pentax Q» 1/2.3 12.0 4000 30001080/30p20.211.118947Pentax Q
 
Samsung NX30« APS-C 20.0 5472 36481080/60p23.512.4101476Samsung NX30
 
Fujifilm X10« » 2/3 12.0 4000 30001080/30p20.511.324550Fujifilm X10
 
Nikon D5500« » APS-C 24.0 6000 40001080/60p24.114.0143884Nikon D5500
 
Nikon D3300« » APS-C 24.0 6000 40001080/60p24.312.8138582Nikon D3300
 
Olympus XZ-2« » 1/1.7 11.8 3968 29761080/30p20.411.321649Olympus XZ-2
 
Olympus E-P3« » Four Thirds 12.2 4032 30241080/60i20.810.153651Olympus E-P3
 
Olympus E-PL2« » Four Thirds 12.2 4032 3024720/30p21.410.257355Olympus E-PL2
 
Olympus E-PL3« » Four Thirds 12.2 4032 30241080/60i20.910.349952Olympus E-PL3
 
Olympus E-PL1« » Four Thirds 12.2 4032 3024720/30p21.510.148754Olympus E-PL1
 
Olympus E-620« » Four Thirds 12.2 4032 3024-21.310.353655Olympus E-620
 
Panasonic GF3« » Four Thirds 12.0 4000 30001080/60i20.610.045849Panasonic GF3
 
Panasonic G2« » Four Thirds 12.0 4000 3000720/30p21.210.349353Panasonic G2
 
Panasonic GF2« » Four Thirds 12.0 4000 30001080/60i21.210.350654Panasonic GF2
 
Sony A6400« » APS-C 24.0 6000 40004K/30p2413.6143183Sony A6400
 
Sony A6000« » APS-C 24.0 6000 40001080/60p24.113.1134782Sony A6000
 
Sony A3000« » APS-C 19.8 5456 36321080/60i23.712.8106878Sony A3000

Many modern cameras are not only capable of taking still images, but can also record movies. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the NX30 provides a faster frame rate than the Pentax Q. It can shoot movie footage at 1080/60p, while the Pentax is limited to 1080/30p.

 

Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. For example, the NX30 has an electronic viewfinder (2359k dots), which can be very helpful when shooting in bright sunlight. In contrast, the Pentax Q relies on live view and the rear LCD for framing. That said, the Pentax Q can be equipped with an optional viewfinder – the O-VF1. The following table reports on some other key feature differences and similarities of the Pentax Q, the Samsung NX30, and comparable cameras.

Core Features
  Camera
Model
Viewfinder
(Type or
'000 dots)
Control
Panel
(yes/no)
LCD
Size
(inch)
LCD
Resolution
('000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Mech
Shutter
Speed
Shutter
Flaps
(1/sec)
Built-in
Flash
(yes/no)
Built-in
Image
Stab
Camera
Model
 
Pentax Q»- n 3.0 460 fixed n 1/2000s 1.5 Y Y Pentax Q
 
Samsung NX30«2359 n 3.0 1036 swivel Y 1/8000s 9.0 Y n Samsung NX30
 
Fujifilm X10« »optical n 2.8 460 fixed n 1/4000s 10.0 Y Y Fujifilm X10
 
Nikon D5500« »optical n 3.2 1037 swivel Y 1/4000s 5.0 Y n Nikon D5500
 
Nikon D3300« »optical n 3.0 921 fixed n 1/4000s 5.0 Y n Nikon D3300
 
Olympus XZ-2« »- n 3.0 920 tilting Y 1/2000s 5.0 Y Y Olympus XZ-2
 
Olympus E-P3« »- n 3.0 614 fixed Y 1/4000s 3.0 Y Y Olympus E-P3
 
Olympus E-PL2« »- n 3.0 460 fixed n 1/4000s 3.0 Y Y Olympus E-PL2
 
Olympus E-PL3« »- n 3.0 460 tilting n 1/4000s 5.5 n Y Olympus E-PL3
 
Olympus E-PL1« »- n 2.7 230 fixed n 1/2000s 3.0 Y Y Olympus E-PL1
 
Olympus E-620« »optical n 2.7 230 swivel n 1/4000s 4.0 Y Y Olympus E-620
 
Panasonic GF3« »- n 3.0 460 fixed Y 1/4000s 3.2 Y n Panasonic GF3
 
Panasonic G2« »1440 n 3.0 460 swivel Y 1/4000s 2.6 Y n Panasonic G2
 
Panasonic GF2« »- n 3.0 460 fixed Y 1/4000s 2.6 Y n Panasonic GF2
 
Sony A6400« »2359 n 3.0 922 tilting Y 1/4000s 11.0 Y n Sony A6400
 
Sony A6000« »1440 n 3.0 922 tilting n 1/4000s 11.0 Y n Sony A6000
 
Sony A3000« »202 n 3.0 230 fixed n 1/4000s 2.5 Y n Sony A3000

One feature that differentiates the Pentax Q and the NX30 is in-body image stabilization (IBIS). The Pentax Q reduces the risk of handshake-induced blur with all attached lenses, while the NX30 has to rely on optical image stabilization in OIS-equipped lenses to achieve the same effect.

The NX30 has an articulated screen that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in taking selfies. In contrast, the Pentax Q does not have a selfie-screen.

The Pentax Q and the Samsung NX30 both have an intervalometer built-in. This enables the photographer to capture time lapse sequences, such as flower blooming, a sunset or moon rise, without purchasing an external camera trigger and related software.

Concerning the storage of imaging data, both the Pentax Q and the NX30 write their files to SDXC cards. The NX30 supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the Pentax Q cannot take advantage of Ultra High Speed SD cards.

 

Connectivity comparison

For some imaging applications, the extent to which a camera can communicate with its environment can be an important aspect in the camera decision process. The table below provides an overview of the connectivity of the Pentax Q and Samsung NX30 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

Input-Output Connections
  Camera
Model
Hotshoe
Port
Internal
Microphone
Internal
Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Type
WiFi
Support
NFC
Support
Bluetooth
Support
Camera
Model
 
Pentax Q»Ymonomono--mini2.0---Pentax Q
 
Samsung NX30«Ystereomono--micro2.0YY-Samsung NX30
 
Fujifilm X10« »Ystereomono--mini2.0---Fujifilm X10
 
Nikon D5500« »YstereomonoY-mini2.0Y--Nikon D5500
 
Nikon D3300« »YmonomonoY-mini2.0---Nikon D3300
 
Olympus XZ-2« »Ystereomono--mini2.0---Olympus XZ-2
 
Olympus E-P3« »Ystereo---mini2.0---Olympus E-P3
 
Olympus E-PL2« »Ystereo---mini2.0---Olympus E-PL2
 
Olympus E-PL3« »Ystereo---mini2.0---Olympus E-PL3
 
Olympus E-PL1« »Ystereo---mini2.0---Olympus E-PL1
 
Olympus E-620« »Y-----2.0---Olympus E-620
 
Panasonic GF3« »-stereomono--mini2.0---Panasonic GF3
 
Panasonic G2« »Ystereomono--mini2.0---Panasonic G2
 
Panasonic GF2« »Ystereomono--mini2.0---Panasonic GF2
 
Sony A6400« »YstereomonoY-micro2.0YYYSony A6400
 
Sony A6000« »Ystereomono--micro2.0YY-Sony A6000
 
Sony A3000« »Ystereomono--mini2.0---Sony A3000

It is notable that the NX30 offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the Pentax Q does not offer wifi capability.

Both the Pentax Q and the NX30 have been discontinued, but can regularly be found used on eBay. The Pentax Q was replaced by the Pentax Q10, while the NX30 does not have a direct successor. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Pentax and Samsung websites.


Review summary

So how do things add up? Which of the two cameras – the Pentax Q or the Samsung NX30 – has the upper hand? Is one clearly better than the other? A synthesis of the relative strong points of each of the models is listed below.

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Arguments in favor of the Pentax Q:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • More compact: Is smaller (98x57mm vs 127x96mm) and thus needs less room in the bag.
  • Less heavy: Is lighter (by 195g or 52 percent) and hence easier to carry around.
  • Sharper images: Has hand-shake reducing image stabilization built-in.
  • More affordable: Was introduced into a lower priced category (35 percent cheaper at launch).
  • More heavily discounted: Has been available for much longer (launched in June 2011).

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Reasons to prefer the Samsung NX30:

  • More detail: Has more megapixels (20 vs 12MP), which boosts linear resolution by 32%.
  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • Better image quality: Scores substantially higher (29 points) in the DXO overall evaluation.
  • Richer colors: Generates noticeably more natural colors (3.3 bits more color depth).
  • More dynamic range: Captures a broader range of light and dark details (1.3 EV of extra DR).
  • Better low-light sensitivity: Can shoot in dim conditions (2.4 stops ISO advantage).
  • Better video: Provides higher movie framerates (1080/60p versus 1080/30p).
  • Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
  • Easier framing: Has an electronic viewfinder for image composition and settings control.
  • More detailed LCD: Has a higher resolution rear screen (1036k vs 460k dots).
  • More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
  • Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
  • More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/2000s) to freeze action.
  • Faster burst: Shoots at higher frequency (9 vs 1.5 flaps/sec) to capture the decisive moment.
  • Longer lasting: Gets more shots (360 versus 230) out of a single battery charge.
  • Easier travel charging: Can be conveniently charged via its USB port.
  • Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
  • Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
  • Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
  • More modern: Reflects 2 years and 6 months of technical progress since the Pentax Q launch.

If the count of individual advantages (bullet points above) is taken as a guide, the NX30 is the clear winner of the contest (20 : 6 points). However, the relevance of individual strengths will vary across photographers, so that you might want to apply your own weighing scheme to the summary points when reflecting and deciding on a new camera. A professional wedding photographer will view the differences between cameras in a way that diverges from the perspective of a travel photog, and a person interested in cityscapes has distinct needs from a macro shooter. Hence, the decision which camera is best and worth buying is often a very personal one.

Pentax Q 06:20 NX30

How about other alternatives? Do the specifications of the Pentax Q and the Samsung NX30 place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera listing whether the two cameras rank among the cream of the crop.

In any case, while the specs-based evaluation of cameras can be instructive in revealing their potential as photographic tools, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the Pentax Q or the NX30. User reviews that are available, for instance, at amazon can sometimes shed light on these issues, but such feedback is all too often partial, inconsistent, and inaccurate.

Expert reviews

This is where reviews by experts come in. The adjacent summary-table relays the overall verdicts of several of the most popular camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, and photographyblog). As can be seen, the professional reviewers agree in many cases on the quality of different cameras, but sometimes their assessments diverge, reinforcing the earlier point that a camera decision is often a very personal choice.

Review Scores
  Camera
Model
cameralabs dpreview ephotozine imaging-resource photographyblog Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Camera
Model
 
Pentax Q»--4/53.5/53.5/5 Jun 2011 649- i Pentax Q
 
Samsung NX30«-77/1004.5/54/54.5/5 Jan 2014 999- i Samsung NX30
 
Fujifilm X10« »-76/1004/53.5/54.5/5 Sep 2011 599- i Fujifilm X10
 
Nikon D5500« »+79/1004.5/55/54.5/5 Jan 2015 899- i Nikon D5500
 
Nikon D3300« »+77/1004.5/54.5/54.5/5 Jan 2014 499- i Nikon D3300
 
Olympus XZ-2« »+-4.5/54/54.5/5 Sep 2012 599- i Olympus XZ-2
 
Olympus E-P3« »83/10074/1004.5/54.5/54.5/5 Jun 2011 799- i Olympus E-P3
 
Olympus E-PL2« »83/10071/1004.5/54.5/54.5/5 Jan 2011 599- i Olympus E-PL2
 
Olympus E-PL3« »+ +72/1004.5/5-4/5 Jun 2011 599- i Olympus E-PL3
 
Olympus E-PL1« »86/10069/1004/54.5/54.5/5 Feb 2010 599- i Olympus E-PL1
 
Olympus E-620« »88/10072/1004.5/5o5/5 Feb 2009 699- i Olympus E-620
 
Panasonic GF3« »82/10071/1004.5/54.5/54/5 Jun 2011 549- i Panasonic GF3
 
Panasonic G2« »-72/1004/54/54.5/5 Mar 2010 599- i Panasonic G2
 
Panasonic GF2« »82/10070/1004.5/54.5/54.5/5 Nov 2010 549- i Panasonic GF2
 
Sony A6400« »+85/1004.5/5-4/5 Jan 2019 899 i i Sony A6400
 
Sony A6000« »+80/1004.5/55/55/5 Feb 2014 599- i Sony A6000
 
Sony A3000« »+-4/54.5/54/5 Aug 2013 329- i Sony A3000
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (-) not available.

Care should be taken when interpreting the review scores above, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. Also, please note that some of the review sites have changed their methodology and reporting over time.

Pentax Q:
Check Ebay offers
Samsung NX30:
Check Ebay offers

Other camera comparisons

Did this review help to inform your camera decision process? In case you are interested in seeing how other cameras pair up, just make your choice using the following search menu. As an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.

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    Specifications: Pentax Q vs Samsung NX30

    Below is a side-by-side comparison of the specs of the two cameras to facilitate a quick review of their differences and common features.

    Camera Specifications
    Camera Model Pentax Q Samsung NX30
    Camera Type Mirrorless system camera Mirrorless system camera
    Camera Lens Pentax Q mount lenses Samsung NX mount lenses
    Launch Date June 2011 January 2014
    Launch Price USD 649 USD 999
    Sensor Specs Pentax Q Samsung NX30
    Sensor Technology CMOS CMOS
    Sensor Format 1/2.3" Sensor APS-C Sensor
    Sensor Size 6.17 x 4.55 mm 23.5 x 15.7 mm
    Sensor Area 28.0735 mm2 368.95 mm2
    Sensor Diagonal 7.7 mm 28.3 mm
    Crop Factor 5.6x 1.5x
    Sensor Resolution 12 Megapixels 20 Megapixels
    Image Resolution 4000 x 3000 pixels 5472 x 3648 pixels
    Pixel Pitch 1.53 μm 4.30 μm
    Pixel Density 42.74 MP/cm2 5.41 MP/cm2
    Moiré control Anti-Alias filter no AA filter
    Movie Capability 1080/30p Video 1080/60p Video
    ISO Setting 125-6400 ISO 100-25600 ISO
    DXO Sensor Quality (score) 47 76
    DXO Color Depth (bits) 20.2 23.5
    DXO Dynamic Range (EV) 11.1 12.4
    DXO Low Light (ISO) 189 1014
    Screen Specs Pentax Q Samsung NX30
    Viewfinder Type Viewfinder optional Electronic viewfinder
    Viewfinder Field of View 100%
    Viewfinder Magnification 0.64x
    Viewfinder Resolution 2359k dots
    LCD Framing Live View Live View
    Rear LCD Size 3.0 inch 3.0 inch
    LCD Resolution 460k dots 1036k dots
    LCD Attachment Fixed screen Swivel screen
    Touch Input no Touchscreen Touchscreen
    Shooting Specs Pentax Q Samsung NX30
    Autofocus System Contrast-detect AF On-Sensor Phase-detect
    Manual Focusing AidNo Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) 1/2000/s 1/8000/s
    Continuous Shooting 1.5 shutter flaps/s 9 shutter flaps/s
    Time-Lapse PhotographyIntervalometer built-inIntervalometer built-in
    Image StabilizationIn-body stabilizationLens stabilization only
    Fill Flash Build-in Flash Build-in Flash
    Storage Medium SDXC cards SDXC cards
    Second Storage Option Single card slot Single card slot
    UHS card support no UHS-I
    Connectivity Specs Pentax Q Samsung NX30
    External Flash Hotshoe Hotshoe
    USB Connector USB 2.0 USB 2.0
    HDMI Port mini HDMI micro HDMI
    Wifi Support no Wifi Wifi built-in
    Near-Field Communication no NFC NFC built-in
    Body Specs Pentax Q Samsung NX30
    Battery Type D-LI68 BP1410
    Battery Life (CIPA)230 shots per charge360 shots per charge
    In-Camera Charging no USB charging USB charging
    Body Dimensions 98 x 57 x 31 mm
    (3.9 x 2.2 x 1.2 in)
    127 x 96 x 58 mm
    (5.0 x 3.8 x 2.3 in)
    Camera Weight 180 g (6.3 oz) 375 g (13.2 oz)

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