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Nikon D90 vs Pentax K-3 II

The Nikon D90 and the Pentax K-3 II are two enthusiast cameras that were revealed to the public, respectively, in August 2008 and April 2015. Both are DSLR (Digital Single Lens Reflex) cameras that are equipped with an APS-C sensor. The Nikon has a resolution of 12.2 megapixels, whereas the Pentax provides 24.1 MP.

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

Headline Specifications
Nikon D90
versus
Pentax K-3 II
Nikon D90   Pentax K-3 II
Digital single lens reflex Digital single lens reflex
Nikon F mount lenses Pentax K mount lenses
12.2 MP – APS-C sensor 24.1 MP – APS-C sensor
720/24p Video 1080/60i Video
ISO 200-3,200 (200 - 6,400) ISO 100-51,200
Optical viewfinder Optical viewfinder
3.0" LCD – 920k dots 3.2" LCD – 1037k dots
Fixed screen (not touch-sensitive) Fixed screen (not touch-sensitive)
4.5 shutter flaps per second 8.3 shutter flaps per second
Lens stabilization onlyIn-body stabilization
not weather sealedWeathersealed body
850 shots per battery charge720 shots per battery charge
132 x 103 x 77 mm, 703 g 131 x 100 x 77 mm, 800 g
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Check K-3 II offers at
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Going beyond this snapshot of core features and characteristics, what are the differences between the Nikon D90 and the Pentax K-3 II? 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 Nikon D90 and the Pentax K-3 II is provided in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive perspectives from the front, the top, and the back are available. All size dimensions are rounded to the nearest millimeter.

The K-3 II can be obtained in two different colors (black, silver), while the D90 is only available in black.

Size Nikon D90 vs Pentax K-3 II
Compare D90 versus K-3 II top
Comparison D90 or K-3 II rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Pentax K-3 II is somewhat smaller (4 percent) than the Nikon D90. However, the K-3 II is markedly heavier (14 percent) than the D90. It is noteworthy in this context that the K-3 II is splash and dust-proof, while the D90 does not feature any corresponding weather-sealing.

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.

Concerning battery life, the D90 gets 850 shots out of its EN-EL3e battery, while the K-3 II can take 720 images on a single charge of its D-LI90 power pack.

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. If you would like to visualize and compare a different camera combination, you can navigate to the CAM-parator app and make your selection from a broad list of cameras there.

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Body Specifications
    Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Nikon D90 132 mm 103 mm 77 mm 703 g 850 n Aug 2008 1,299ebay.com
2.
 
Pentax K-3 II 131 mm 100 mm 77 mm 800 g 720 Y Apr 2015 1,099ebay.com
3.
 
Canon 40D 146 mm 108 mm 74 mm 822 g 750 n Aug 2007 1,299ebay.com
4.
 
Nikon D7500 136 mm 104 mm 73 mm 720 g 950 Y Apr 2017 1,299 amazon.com
5.
 
Nikon D7200 136 mm 107 mm 76 mm 765 g 1110 Y Mar 2015 1,199ebay.com
6.
 
Nikon D7100 136 mm 107 mm 76 mm 765 g 950 Y Feb 2013 1,199ebay.com
7.
 
Nikon D7000 132 mm 105 mm 77 mm 780 g 1050 Y Sep 2010 1,499ebay.com
8.
 
Nikon D3000 126 mm 97 mm 64 mm 536 g 500 n Jul 2009 599ebay.com
9.
 
Nikon D5000 127 mm 104 mm 80 mm 590 g 510 n Apr 2009 749ebay.com
10.
 
Nikon D60 126 mm 94 mm 64 mm 522 g 500 n Jan 2008 629ebay.com
11.
 
Nikon D40X 124 mm 94 mm 64 mm 522 g 520 n Mar 2007 729ebay.com
12.
 
Nikon D80 132 mm 103 mm 77 mm 668 g 600 n Aug 2006 999ebay.com
13.
 
Pentax K-3 III 135 mm 104 mm 74 mm 820 g 800 Y Mar 2021 1,999 amazon.com
14.
 
Pentax KP 132 mm 101 mm 76 mm 703 g 390 Y Jan 2017 1,099ebay.com
15.
 
Pentax K-70 126 mm 93 mm 74 mm 688 g 410 Y Jun 2016 649 amazon.com
16.
 
Pentax K-3 131 mm 100 mm 77 mm 800 g 560 Y Oct 2013 1,299ebay.com
17.
 
Pentax K-5 131 mm 97 mm 73 mm 760 g 740 Y Sep 2010 1,099ebay.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.

The price is, of course, an important factor in any camera decision. The listed launch 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 D90, 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.

Sensor comparison

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. 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 tend to be more expensive and lead to bigger and heavier cameras and lenses.

Both cameras under consideration feature an APS-C sensor, but their sensors differ slightly in size. The sensor area in the K-3 II is 2 percent smaller. They nevertheless have the same format factor of 1.5. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Nikon D90 and Pentax K-3 II sensor measures

Despite having a slightly smaller sensor, the K-3 II offers a higher resolution of 24.1 megapixels, compared with 12.2 MP of the D90. This megapixels advantage comes at the cost of a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 3.90μm versus 5.53μm for the D90). However, it should be noted that the K-3 II is much more recent (by 6 years and 7 months) than the D90, and its sensor will have benefitted from technological advances during this time that make it possible to gather light more efficiently. Coming back to sensor resolution, it should be mentioned that the K-3 II has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Pentax K-3 II implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the K-3 II for good quality output (200 dots per inch) amounts to 30.1 x 20 inches or 76.4 x 50.8 cm, for very good quality (250 dpi) 24.1 x 16 inches or 61.1 x 40.6 cm, and for excellent quality (300 dpi) 20.1 x 13.3 inches or 50.9 x 33.9 cm. The corresponding values for the Nikon D90 are 21.4 x 14.2 inches or 54.5 x 36.2 cm for good quality, 17.2 x 11.4 inches or 43.6 x 28.9 cm for very good quality, and 14.3 x 9.5 inches or 36.3 x 24.1 cm for excellent quality prints.

Unlike the D90, 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).

The Nikon D90 has a native sensitivity range from ISO 200 to ISO 3200, which can be extended to ISO 200-6400. The corresponding ISO settings for the Pentax K-3 II are ISO 100 to ISO 51200 (no boost).

Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.

D90 versus K-3 II MP

Consistent information on actual sensor performance is available from DXO Mark for many 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"). Of the two cameras under consideration, the K-3 II has a markedly higher DXO score than the D90 (overall score 7 points higher), which will translate into better image quality. The advantage is based on 0.9 bits higher color depth, 1.1 EV in additional dynamic range, and 0.2 stops in additional low light sensitivity. The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

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Sensor Characteristics
    Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Nikon D90 APS-C 12.2 4288 2848720/24p22.712.597773
2.
 
Pentax K-3 II APS-C 24.1 6016 40001080/60i23.613.6110680
3.
 
Canon 40D APS-C 10.1 3888 2592none22.111.370364
4.
 
Nikon D7500 APS-C 20.7 5568 37124K/30p24.314.0148386
5.
 
Nikon D7200 APS-C 24.0 6000 40001080/60p24.514.6133387
6.
 
Nikon D7100 APS-C 24.0 6000 40001080/60p24.213.7125683
7.
 
Nikon D7000 APS-C 16.1 4928 32641080/24p23.513.9116780
8.
 
Nikon D3000 APS-C 10.0 3872 2592none22.311.156362
9.
 
Nikon D5000 APS-C 12.2 4288 2848720/24p22.712.586872
10.
 
Nikon D60 APS-C 10.0 3872 2592none22.511.456265
11.
 
Nikon D40X APS-C 10.0 3872 2592none22.411.451663
12.
 
Nikon D80 APS-C 10.0 3872 2592none22.111.252461
13.
 
Pentax K-3 III APS-C 25.6 6192 41284K/30p24.213.7208385
14.
 
Pentax KP APS-C 24.1 6016 40001080/60i23.913.2169981
15.
 
Pentax K-70 APS-C 24.0 6000 40001080/60i23.813.1163980
16.
 
Pentax K-3 APS-C 24.1 6016 40001080/60i23.713.4121680
17.
 
Pentax K-5 APS-C 16.1 4928 32641080/25p23.714.1116282
Note: DXO values in italics represent estimates based on sensor size and age.

Many modern cameras cannot only take still pictures, but also record videos. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the K-3 II provides a better video resolution than the D90. It can shoot movie footage at 1080/60i, while the Nikon is limited to 720/24p.

Feature comparison

Apart from body and sensor, cameras can and do differ across a range of features. The D90 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 viewfinders of both cameras offer the same magnification (0.63x), but the one in the K-3 II has a wider field of view (100%) than the finder in the D90 (96%), so that a larger proportion of the captured image is visible. The adjacent table lists some of the other core features of the Nikon D90 and Pentax K-3 II along with similar information for a selection of comparators.

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Core Features
    Camera
Model
Viewfinder
(Type or
000 dots)
Control
Panel
(yes/no)
LCD
Specifications
(inch/000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Max
Shutter
Speed *
Max
Shutter
Flaps *
Built-in
Flash
(yes/no)
Built-in
Image
Stab
1.
 
Nikon D90optical Y3.0 / 920 fixed n 1/4000s 4.5/s Y n
2.
 
Pentax K-3 IIoptical Y3.2 / 1037 fixed n 1/8000s 8.3/s n Y
3.
 
Canon 40Doptical Y3.0 / 230 fixed n 1/8000s 6.5/s Y n
4.
 
Nikon D7500optical Y3.2 / 922 tilting Y 1/8000s 8.0/s Y n
5.
 
Nikon D7200optical Y3.2 / 1229 fixed n 1/8000s 6.0/s Y n
6.
 
Nikon D7100optical Y3.2 / 1229 fixed n 1/8000s 6.0/s Y n
7.
 
Nikon D7000optical Y3.0 / 921 fixed n 1/8000s 6.0/s Y n
8.
 
Nikon D3000optical n3.0 / 230 fixed n 1/4000s 3.0/s Y n
9.
 
Nikon D5000optical n2.7 / 230 full-flex n 1/4000s 4.0/s Y n
10.
 
Nikon D60optical n2.5 / 230 fixed n 1/4000s 3.0/s Y n
11.
 
Nikon D40Xoptical n2.5 / 230 fixed n 1/4000s 3.0/s Y n
12.
 
Nikon D80optical n2.5 / 230 fixed n 1/4000s 3.0/s Y n
13.
 
Pentax K-3 IIIoptical Y3.2 / 1620 fixed Y 1/8000s 12.0/s n Y
14.
 
Pentax KPoptical n3.0 / 921 tilting n 1/6000s 7.0/s Y Y
15.
 
Pentax K-70optical n3.0 / 921 swivel n 1/6000s 6.0/s Y Y
16.
 
Pentax K-3optical Y3.2 / 1037 fixed n 1/8000s 8.3/s Y Y
17.
 
Pentax K-5optical Y3.0 / 921 fixed n 1/8000s 7.0/s Y Y
Notes: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One difference between the cameras concerns the presence of an on-board flash. The D90 has one, while the K-3 II does not. While the built-in flash of the D90 is not very powerful, it can at times be useful as a fill-in light.

The Pentax K-3 II has 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.

The D90 writes its imaging data to SDHC cards, while the K-3 II uses SDXC cards. The K-3 II features dual card slots, which can be very useful in case a memory card fails. In contrast, the D90 only has one slot. The K-3 II supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the D90 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 Nikon D90 and Pentax K-3 II and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
    Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Nikon D90Ymono / mono--mini2.0---
2.
 
Pentax K-3 IIYmono / monoYYmini3.0---
3.
 
Canon 40DY- / ----2.0---
4.
 
Nikon D7500Ystereo / monoYYmini2.0Y-Y
5.
 
Nikon D7200Ystereo / monoYYmini2.0YY-
6.
 
Nikon D7100Ystereo / monoYYmini2.0---
7.
 
Nikon D7000Ymono / monoY-mini2.0---
8.
 
Nikon D3000Y- / ----2.0---
9.
 
Nikon D5000Ymono / mono--mini2.0---
10.
 
Nikon D60Y- / ----2.0---
11.
 
Nikon D40XY- / ----2.0---
12.
 
Nikon D80Y- / ----2.0---
13.
 
Pentax K-3 IIIYstereo / monoYYmicro3.2Y-Y
14.
 
Pentax KPYstereo / monoY--2.0Y--
15.
 
Pentax K-70Ystereo / monoY-mini2.0Y--
16.
 
Pentax K-3Ymono / monoYYmini3.0---
17.
 
Pentax K-5Ystereo / monoY-mini2.0---

It is notable that the K-3 II has a headphone jack, which makes it possible to attach external headphones and monitor the quality of sound during the recording process. The D90 lacks such a headphone port.

Studio photographers will appreciate that the Pentax K-3 II (unlike the D90) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Travel and landscape photographers will find it useful that the K-3 II has an internal geolocalization sensor and can record GPS coordinates in its EXIF data.

Both the D90 and the K-3 II have been discontinued, but can regularly be found used on ebay. The D90 was replaced by the Nikon D7000, while the K-3 II was followed by the Pentax K-3 III. Further information on the features and operation of the D90 and K-3 II can be found, respectively, in the Nikon D90 Manual (free pdf) or the online Pentax K-3 II Manual.

Review summary

So what is the bottom line? Which of the two cameras – the Nikon D90 or the Pentax K-3 II – has the upper hand? Is one clearly better than the other? Below is a summary of the relative strengths of each of the two contestants.

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Arguments in favor of the Nikon D90:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Less heavy: Is lighter (by 97g or 12 percent) and hence easier to carry around.
  • Longer lasting: Can take more shots (850 versus 720) on a single battery charge.
  • Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
  • More heavily discounted: Has been available for much longer (launched in August 2008).

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Advantages of the Pentax K-3 II:

  • More detail: Has more megapixels (24.1 vs 12.2MP), which boosts linear resolution by 40%.
  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • High quality composites: Can combine several shots after pixel-shifting its sensor.
  • Better image quality: Scores markedly higher (7 points) in the DXO overall evaluation.
  • More dynamic range: Captures a broader range of light and dark details (1.1 EV of extra DR).
  • Better video: Provides higher definition movie capture (1080/60i vs 720/24p).
  • Better sound: Can connect to an external microphone for higher quality sound recording.
  • Better sound control: Has a headphone port that enables audio monitoring while recording.
  • More complete view: Has a viewfinder with a larger field of view (100% vs 96%).
  • Larger screen: Has a bigger rear LCD (3.2" vs 3.0") for image review and settings control.
  • More detailed LCD: Has a higher resolution rear screen (1037k vs 920k dots).
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • Faster burst: Shoots at higher frequency (8.3 vs 4.5 flaps/sec) to capture the decisive moment.
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
  • Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
  • Easier geotagging: Features an internal GPS sensor to log localization data.
  • Faster data transfer: Supports a more advanced USB protocol (3.0 vs 2.0).
  • Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
  • Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
  • Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
  • More affordable: Was released into a lower priced segment (15 percent cheaper at launch).
  • More modern: Reflects 6 years and 7 months of technical progress since the D90 launch.

If the number of relative strengths (bullet points above) is taken as a guide, the K-3 II is the clear winner of the contest (24 : 5 points). However, the pertinence of the various camera strengths will differ across photographers, so that you might want to weigh individual camera traits according to their importance for your own imaging needs before making a camera decision. A professional wildlife photographer will view the differences between cameras in a way that diverges from the perspective of a family photog, and a person interested in architecture has distinct needs from a sports shooter. Hence, the decision which camera is best and worth buying is often a very personal one.

D90 05:24 K-3 II

How about other alternatives? Do the specifications of the Nikon D90 and the Pentax K-3 II place the cameras among the top in their class? Find out in the latest Best DSLR Camera listing whether the two cameras rank among the cream of the crop.

In any case, while the comparison of technical specifications can provide a useful overview of the capabilities of different cameras, it says little about, for example, the shooting experience and imaging performance of the D90 and the K-3 II in practical situations. At times, user reviews, such as those published at amazon, address these issues in a useful manner, but such feedback is on many occasions incomplete, inconsistent, and unreliable.

Expert reviews

This is where reviews by experts come in. The table below provides a synthesis of the camera assessments of some of the best known photo-gear review sites (amateurphotographer [AP], cameralabs [CL], digitalcameraworld [DCW], dpreview [DPR], ephotozine [EPZ], photographyblog [PB]). 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.

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Expert Camera Reviews
     Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Nikon D90..+ +..+ +4/54.5/5 Aug 2008 1,299ebay.com
2.
 
Pentax K-3 II4.5/5......5/55/5 Apr 2015 1,099ebay.com
3.
 
Canon 40D..+ +..+ +4.5/54.5/5 Aug 2007 1,299ebay.com
4.
 
Nikon D75004.5/5+ +4.5/586/1005/54.5/5 Apr 2017 1,299 amazon.com
5.
 
Nikon D72004/5+ +..84/1004.5/54.5/5 Mar 2015 1,199ebay.com
6.
 
Nikon D71005/5+ +..85/1004.5/54.5/5 Feb 2013 1,199ebay.com
7.
 
Nikon D70004/5....80/1004.5/54.5/5 Sep 2010 1,499ebay.com
8.
 
Nikon D3000..+..72/1004/54.5/5 Jul 2009 599ebay.com
9.
 
Nikon D5000..+ +..75/1004/54.5/5 Apr 2009 749ebay.com
10.
 
Nikon D60..80/100..+ +4/54.5/5 Jan 2008 629ebay.com
11.
 
Nikon D40X..79/100..+ +4/54/5 Mar 2007 729ebay.com
12.
 
Nikon D80..+..+ +o4.5/5 Aug 2006 999ebay.com
13.
 
Pentax K-3 III4/5..3/5..4.5/5.. Mar 2021 1,999 amazon.com
14.
 
Pentax KP4/5..3/582/1005/54.5/5 Jan 2017 1,099ebay.com
15.
 
Pentax K-704.5/5..4/579/1004.5/54.5/5 Jun 2016 649 amazon.com
16.
 
Pentax K-34/5....83/1005/55/5 Oct 2013 1,299ebay.com
17.
 
Pentax K-54/5....83/1005/54.5/5 Sep 2010 1,099ebay.com
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The above review scores should be interpreted with care, though. The assessments were made in relation to similar cameras of the same technological generation. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. Also, please note that some of the review sites have changed their methodology and reporting over time.

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Other camera comparisons

Did this review help to inform your camera decision process? 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.

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    Specifications: Nikon D90 vs Pentax K-3 II

    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 Nikon D90 Pentax K-3 II
    Camera Type Digital single lens reflex Digital single lens reflex
    Camera Lens Nikon F mount lenses Pentax K mount lenses
    Launch Date August 2008 April 2015
    Launch Price USD 1,299 USD 1,099
    Sensor Specs Nikon D90 Pentax K-3 II
    Sensor Technology CMOS CMOS
    Sensor Format APS-C Sensor APS-C Sensor
    Sensor Size 23.6 x 15.8 mm 23.5 x 15.6 mm
    Sensor Area 372.88 mm2 366.6 mm2
    Sensor Diagonal 28.4 mm 28.2 mm
    Crop Factor 1.5x 1.5x
    Sensor Resolution 12.2 Megapixels 24.1 Megapixels
    Image Resolution 4288 x 2848 pixels 6016 x 4000 pixels
    Pixel Pitch 5.53 μm 3.90 μm
    Pixel Density 3.28 MP/cm2 6.56 MP/cm2
    Moiré control Anti-Alias filter no AA filter
    Movie Capability 720/24p Video 1080/60i Video
    ISO Setting 200 - 3,200 ISO 100 - 51,200 ISO
    ISO Boost 200 - 6,400 ISO no Enhancement
    Image Processor EXPEED PRIME III
    DXO Sensor Quality (score) 73 80
    DXO Color Depth (bits) 22.7 23.6
    DXO Dynamic Range (EV) 12.5 13.6
    DXO Low Light (ISO) 977 1106
    Screen Specs Nikon D90 Pentax K-3 II
    Viewfinder Type Optical viewfinder Optical viewfinder
    Viewfinder Field of View 96% 100%
    Viewfinder Magnification 0.63x 0.63x
    Top-Level Screen Control Panel Control Panel
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.2inch
    LCD Resolution 920k dots 1037k dots
    LCD Attachment Fixed screen Fixed screen
    Shooting Specs Nikon D90 Pentax K-3 II
    Focus System Phase-detect AF Phase-detect AF
    Manual Focusing Aidno Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) 1/4000s 1/8000s
    Continuous Shooting 4.5 shutter flaps/s 8.3 shutter flaps/s
    Shutter Life Expectancy100 000 actuations200 000 actuations
    Time-Lapse Photographyno IntervalometerIntervalometer built-in
    Image StabilizationLens stabilization onlyIn-body stabilization
    Fill Flash Built-in Flash no On-Board Flash
    Storage Medium SDHC cards SDXC cards
    Single or Dual Card Slots Single card slot Dual card slots
    UHS card support no UHS-I
    Connectivity Specs Nikon D90 Pentax K-3 II
    External Flash Hotshoe Hotshoe
    Studio Flash no PC Sync PC Sync socket
    USB Connector USB 2.0 USB 3.0
    HDMI Port mini HDMI mini HDMI
    Microphone Port no MIC socket External MIC port
    Headphone Socket no Headphone port Headphone port
    Wifi Support no Wifi no Wifi
    Geotagging no internal GPS GPS built-in
    Body Specs Nikon D90 Pentax K-3 II
    Environmental Sealingnot weather sealedWeathersealed body
    Battery Type EN-EL3e D-LI90
    Battery Life (CIPA)850 shots per charge720 shots per charge
    Body Dimensions 132 x 103 x 77 mm
    (5.2 x 4.1 x 3.0 in)
    131 x 100 x 77 mm
    (5.2 x 3.9 x 3.0 in)
    Camera Weight 703 g (24.8 oz) 800 g (28.2 oz)
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    Check D90 offers at
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    Check K-3 II offers at
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