Pentax K-3 versus Pentax K-3 II
The Pentax K-3 and the Pentax K-3 II are two enthusiast cameras that were revealed to the public, respectively, in October 2013 and April 2015. Both are DSLR (Digital Single Lens Reflex) cameras that are equipped with an APS-C sensor. Both cameras offer a resolution of 24.1 megapixel.
The physical size and weight of the Pentax K-3 and the Pentax K-3 II are illustrated in the side-by-side display below. Three successive views from the front, the top, and the rear are shown. All width, height and depth measures are rounded to the nearest millimeter. You can also toggle the display to switch to a percentage comparison if you prefer that the measures are being expressed in relative terms (in this case, the camera on the left – the K-3 – represents 100 percent across all the size and weight measures).
In this particular case, the Pentax K-3 and the Pentax K-3 II have exactly the same width and height, and, thus, have identically-sized bodies. Moreover, the two cameras also share the same weight. In this context, it is worth noting that both cameras are splash and dust-proof and can, hence, be used in inclement weather conditions or harsh environments.
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 the specifications of available lenses in order to get the full picture of the size and weight of the two camera systems.
The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. If you want to switch the focus of the display and review another camera pair, just select a new right or left comparator from among the camera models in the table. Alternatively, you can also move across to the CAM-parator tool and choose from the broad selection of possible comparisons there.
|Camera Body Specifications
|Pentax K-3 (⇒ rgt)||131 mm||100 mm||77 mm||800 g||560||YES||2013||1,299||discont.||check|
|Pentax K-3 II (⇒ lft)||131 mm||100 mm||77 mm||800 g||720||YES||2015||1,099||latest||check|
|Canon 70D (⇒ lft | rgt)||139 mm||104 mm||79 mm||755 g||920||YES||2013||1,199||discont.||check|
|Nikon D7100 (⇒ lft | rgt)||136 mm||107 mm||76 mm||765 g||950||YES||2013||1,199||discont.||check|
|Olympus E-M1 (⇒ lft | rgt)||130 mm||94 mm||63 mm||497 g||350||YES||2013||1,399||discont.||check|
|Panasonic GX8 (⇒ lft | rgt)||133 mm||78 mm||63 mm||487 g||330||YES||2015||1,199||discont.||check|
|Pentax KP (⇒ lft | rgt)||132 mm||101 mm||76 mm||703 g||390||YES||2017||1,099||latest||check|
|Pentax K-70 (⇒ lft | rgt)||126 mm||93 mm||74 mm||688 g||410||YES||2016||649||latest||check|
|Sony RX10 II (⇒ lft | rgt)||129 mm||88 mm||102 mm||813 g||400||YES||2015||1,299||discont.||check|
|Sony A7 II (⇒ lft | rgt)||127 mm||96 mm||60 mm||599 g||350||YES||2014||1,999||discont.||check|
|Sony RX10 (⇒ lft | rgt)||129 mm||88 mm||102 mm||813 g||420||YES||2013||1,299||discont.||check|
|Sony A99 (⇒ lft | rgt)||147 mm||111 mm||78 mm||812 g||500||YES||2012||2,799||discont.||check|
The listed prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The K-3 II was launched at a somewhat lower price (by 15 percent) than the K-3, which makes it more attractive for photographers on a tight budget. Usually, retail prices stay at first close to the launch price, but after several months, discounts become available. 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.
The size of the imaging sensor is a crucial determinant of image quality. All other things equal, a large sensor will have larger individual pixel-units that offer better low-light sensitivity, wider dynamic range, and richer color depth than smaller pixels in a sensor of the same technological generation. Furthermore, a large sensor camera will give the photographer more possibilities to use shallow depth-of-field in order to isolate a subject from the background. On the downside, larger sensors tend to be more expensive and lead to bigger and heavier cameras and lenses.
Both cameras under consideration feature an APS-C sensor and have a format factor (sometimes also referred to as "crop factor") of 1.5. Within the spectrum of camera sensors, this places the review cameras among the medium-sized sensor cameras that aim to strike a balance between image quality and portability. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
The two cameras under review do not only share the same sensor size, but also offer an identical resolution of 24.1 megapixel. This similarity in sensor specs implies that both the K-3 and the K-3 II have the same pixel density, as well as the same pixel size. It should, however, be noted that the K-3 II is a somewhat more recent model (by 1 year and 6 months) than the K-3, and its sensor might have benefitted from technological advances during this time. Coming back to sensor resolution, it should be mentioned that neither of the two cameras has an anti-alias filter installed, so they are able to capture all the detail the sensor resolves.
Unlike the K-3, the K-3 II has the capacity to capture high quality composite images by combining multiple shots after shifting its sensor by miniscule distances. This multi-shot, pixel-shift mode is most suitable for photography of stationary objects (landscapes, studio scenes).
Consistent information on actual sensor performance is available from DXO Mark for most cameras. 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"). The Overall DXO ratings for the two cameras under consideration are close, suggesting that they provide similar image quality. The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.
|Pentax K-3 (⇒ rgt)||APS-C||24.1||6016||4000||1080/60i||23.7||13.4||1216||80|
|Pentax K-3 II (⇒ lft)||APS-C||24.1||6016||4000||1080/60i||23.6||13.6||1106||80|
|Canon 70D (⇒ lft | rgt)||APS-C||20.0||5472||3648||1080/30p||22.5||11.6||926||68|
|Nikon D7100 (⇒ lft | rgt)||APS-C||24.0||6000||4000||1080/60p||24.2||13.7||1256||83|
|Olympus E-M1 (⇒ lft | rgt)||Four Thirds||15.9||4608||3456||1080/30p||23.0||12.7||757||73|
|Panasonic GX8 (⇒ lft | rgt)||Four Thirds||20.2||5184||3888||4K/30p||23.5||12.6||806||75|
|Pentax KP (⇒ lft | rgt)||APS-C||24.1||6016||4000||1080/60i||-||-||-||-|
|Pentax K-70 (⇒ lft | rgt)||APS-C||24.0||6000||4000||1080/60i||-||-||-||-|
|Sony RX10 II (⇒ lft | rgt)||1-inch||20.0||5472||3648||4K/30p||23.0||12.6||531||70|
|Sony A7 II (⇒ lft | rgt)||Full Frame||24.0||6000||4000||1080/60p||24.9||13.6||2449||90|
|Sony RX10 (⇒ lft | rgt)||1-inch||20.0||5472||3648||1080/60p||22.9||12.6||474||69|
|Sony A99 (⇒ lft | rgt)||Full Frame||24.0||6000||4000||1080/60p||25.0||14.0||1555||89|
Many modern cameras are not only capable of taking still images, but also of capturing video footage. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, and both provide the same movie specifications (1080/60i).
Apart from body and sensor, cameras can and do differ across a variety of features. The K-3 and the K-3 II are similar in the sense that both have an optical viewfinder. The latter is useful for getting a clear image for framing even in brightly lit environments. The following table reports on some other key feature differences and similarities of the Pentax K-3, the Pentax K-3 II, and comparable cameras. If you need more detail on the specs, you can find comprehensive listings, for example, in the dpreview camera hub.
|Pentax K-3 (⇒ rgt)||optical||YES||3.2||1037||fixed||no||8000||8.3||13||YES|
|Pentax K-3 II (⇒ lft)||optical||YES||3.2||1037||fixed||no||8000||8.3||no||YES|
|Canon 70D (⇒ lft | rgt)||optical||YES||3.0||1040||swivel||YES||8000||7.0||12||no|
|Nikon D7100 (⇒ lft | rgt)||optical||YES||3.2||1229||fixed||no||8000||6.0||12||no|
|Olympus E-M1 (⇒ lft | rgt)||2360||no||3.0||1037||tilting||YES||8000||10.0||no||YES|
|Panasonic GX8 (⇒ lft | rgt)||2360||no||3.0||1040||swivel||YES||8000||10.0||no||YES|
|Pentax KP (⇒ lft | rgt)||optical||no||3.0||921||tilting||no||6000||7.0||YES||YES|
|Pentax K-70 (⇒ lft | rgt)||optical||no||3.0||921||swivel||no||6000||6.0||YES||YES|
|Sony RX10 II (⇒ lft | rgt)||2359||YES||3.0||1229||tilting||no||3200||14.0||10.2||YES|
|Sony A7 II (⇒ lft | rgt)||2400||no||3.0||1230||tilting||no||8000||5.0||no||YES|
|Sony RX10 (⇒ lft | rgt)||1440||YES||3.0||1229||tilting||no||3200||10.0||10.2||YES|
|Sony A99 (⇒ lft | rgt)||2359||YES||3.0||1229||full-flex||no||8000||6.0||no||YES|
The K-3 II is a current model that online retailers, such as amazon, will have in stock. In contrast, the K-3 has been discontinued (but it can be found pre-owned on ebay). As a replacement in the same line of cameras, the K-3 was succeeded by the Pentax K-3 II.
So what conclusions can be drawn? Is there a clear favorite between the Pentax K-3 and the Pentax K-3? The listing below highlights the relative strengths of the two models.
Reasons to prefer the Pentax K-3:
- Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
- More heavily discounted: Has been on the market for longer (launched in October 2013).
Arguments in favor of the Pentax K-3 II:
- High quality composites: Can combine several shots after pixel-shifting its sensor.
- Longer lasting: Gets more shots (720 versus 560) out of a single battery charge.
- More affordable: Was released into a lower priced segment (15 percent cheaper at launch).
- More modern: Was introduced somewhat (1 year and 6 months) more recently.
If the count of individual advantages (bullet points above) is taken as a guide, the K-3 II emerges as the winner of the match-up (4 : 2 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.
In any case, while the comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it remains partial and cannot reveal, for example, the handling experience and imaging performance when actually working with the K-3 or the K-3 II. 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. This is why hands-on reviews by experts are important. The adjacent table relays the overall verdicts of several of the most popular camera review sites. The full reviews are available, respectively, at cameralabs.com, dpreview.com, ephotozine.com, imaging-resource.com, and photographyblog.com.
|Pentax K-3 (⇒ rgt)||-||83/100 Gold||5/5||4.5/5||5/5||2013||1,299||discont.||check|
|Pentax K-3 II (⇒ lft)||-||-||5/5||4.5/5||5/5||2015||1,099||latest||check|
|Canon 70D (⇒ lft | rgt)||HiRec||83/100 Gold||4.5/5||4.5/5||5/5||2013||1,199||discont.||check|
|Nikon D7100 (⇒ lft | rgt)||HiRec||85/100 Gold||4.5/5||5/5||4.5/5||2013||1,199||discont.||check|
|Olympus E-M1 (⇒ lft | rgt)||HiRec||84/100 Gold||4.5/5||4.5/5||4.5/5||2013||1,399||discont.||check|
|Panasonic GX8 (⇒ lft | rgt)||Rec||82/100 Silver||4.5/5||5/5||4.5/5||2015||1,199||discont.||check|
|Pentax KP (⇒ lft | rgt)||-||82/100 Silver||5/5||-||4.5/5||2017||1,099||latest||check|
|Pentax K-70 (⇒ lft | rgt)||-||79/100 Silver||4.5/5||4/5||4.5/5||2016||649||latest||check|
|Sony RX10 II (⇒ lft | rgt)||HiRec||82/100 Gold||4.5/5||4.5/5||4/5||2015||1,299||discont.||check|
|Sony A7 II (⇒ lft | rgt)||Rec||82/100 Silver||4.5/5||5/5||5/5||2014||1,999||discont.||check|
|Sony RX10 (⇒ lft | rgt)||Rec||80/100 Gold||4.5/5||4.5/5||4.5/5||2013||1,299||discont.||check|
|Sony A99 (⇒ lft | rgt)||-||84/100 Gold||4.5/5||reviewed||4.5/5||2012||2,799||discont.||check|
The above review scores should be interpreted with care, though. The assessments were made in relation to similar cameras of the same technological generation. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and comparisons of ratings among very different cameras or across long time periods have little meaning. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.
In case you would like to check on the differences and similarities of other camera models, just make your choice using the following search menu. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored. If the camera you are interested in is not available, please contact me, and I will try to add information on that model to the database.
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