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Pentax K-3 II vs Sony NEX-F3

The Pentax K-3 II and the Sony Alpha NEX-F3 are two digital cameras that were revealed to the public, respectively, in April 2015 and May 2012. The K-3 II is a DSLR, while the NEX-F3 is a mirrorless interchangeable lens camera. Both cameras are equipped with an APS-C sensor. The Pentax has a resolution of 24.1 megapixels, whereas the Sony provides 16 MP.

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

Headline Specifications
Pentax K-3 II   VS Sony NEX-F3
Pentax K-3 II Sony NEX-F3
Digital single lens reflex Mirrorless system camera
Pentax K mount lenses Sony E mount lenses
24.1 MP, APS-C Sensor 16 MP, APS-C Sensor
1080/60i Video 1080/60i Video
ISO 100-51200 ISO 100-16000
Optical viewfinder Viewfinder optional
3.2" LCD, 1037k dots 3.0" LCD, 920k dots
Fixed screen (not touch-sensitive) Tilting screen (not touch-sensitive)
8.3 shutter flaps per second 5.5 shutter flaps per second
In-body stabilizationLens stabilization only
Weathersealed bodyNot weather sealed
720 shots per battery charge470 shots per battery charge
131 x 100 x 77 mm, 800 g 117 x 67 x 42 mm, 314 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Pentax K-3 II and the Sony Alpha NEX-F3? 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 K-3 II and the Sony NEX-F3 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 K-3 II can be obtained in two different colors (black, silver), while the NEX-F3 is available in three color-versions (black, silver, white).

Size Pentax K-3 II vs Sony NEX-F3
Compare K-3 II versus NEX-F3 top
Comparison K-3 II or NEX-F3 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony NEX-F3 is considerably smaller (40 percent) than the Pentax K-3 II. Moreover, the NEX-F3 is substantially lighter (61 percent) than the K-3 II. It is worth mentioning in this context that the K-3 II is splash and dust resistant, while the NEX-F3 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 K-3 II gets 720 shots out of its D-LI90 battery, while the NEX-F3 can take 470 images on a single charge of its NP-FW50 power pack.

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)
Camera
Model
 
Pentax K-3 II» 5.2 in 3.9 in 3.0 in 28.2 oz 720 Y Apr 2015 1,099 iPentax K-3 II
 
Sony NEX-F3« 4.6 in 2.6 in 1.7 in 11.1 oz 470 n May 2012 599iSony NEX-F3
 
Canon 80D« » 5.5 in 4.1 in 3.1 in 25.8 oz 960 Y Feb 2016 1,199iCanon 80D
 
Nikon D7200« » 5.4 in 4.2 in 3.0 in 27.0 oz 1110 Y Mar 2015 1,199iNikon D7200
 
Panasonic GX8« » 5.2 in 3.1 in 2.5 in 17.2 oz 330 Y Jul 2015 1,199iPanasonic GX8
 
Pentax KP« » 5.2 in 4.0 in 3.0 in 24.8 oz 390 Y Jan 2017 1,099 iPentax KP
 
Pentax K-70« » 5.0 in 3.7 in 2.9 in 24.3 oz 410 Y Jun 2016 649 iPentax K-70
 
Pentax K-3« » 5.2 in 3.9 in 3.0 in 28.2 oz 560 Y Oct 2013 1,299iPentax K-3
 
Pentax K-5« » 5.2 in 3.8 in 2.9 in 26.8 oz 740 Y Sep 2010 1,099iPentax K-5
 
Sony A6300« » 4.7 in 2.6 in 1.9 in 14.3 oz 400 Y Feb 2016 999iSony A6300
 
Sony A6500« » 4.7 in 2.6 in 2.1 in 16.0 oz 350 Y Oct 2016 1,399iSony A6500
 
Sony RX10 II« » 5.1 in 3.5 in 4.0 in 28.7 oz 400 Y Jun 2015 1,299iSony RX10 II
 
Sony A5100« » 4.3 in 2.5 in 1.4 in 10.0 oz 400 n Aug 2014 549 iSony A5100
 
Sony NEX-3N« » 4.3 in 2.4 in 1.4 in 9.5 oz 480 n Feb 2013 499iSony NEX-3N
 
Sony NEX-5N« » 4.4 in 2.3 in 1.5 in 9.5 oz 460 n Aug 2011 699iSony NEX-5N
 
Sony NEX-3« » 4.6 in 2.4 in 1.3 in 10.5 oz 330 n May 2010 599iSony NEX-3
 
Sony NEX-5« » 4.4 in 2.3 in 1.5 in 10.1 oz 330 n May 2010 699iSony NEX-5
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 NEX-F3 was launched at a markedly lower price (by 45 percent) than the K-3 II, 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.

Both cameras under consideration feature an APS-C sensor, but their sensors differ slightly in size. The sensor area in the NEX-F3 is 1 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.

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

Pentax K-3 II and Sony NEX-F3 sensor measures

With 24.1MP, the K-3 II offers a higher resolution than the NEX-F3 (16MP), but the K-3 II has smaller individual pixels (pixel pitch of 3.90μm versus 4.78μm for the NEX-F3). However, the K-3 II is a much more recent model (by 2 years and 11 months) than the NEX-F3, and its sensor will have benefitted from technological advances during this time that enhance the light gathering capacity of its pixels. 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 inch or 76.4 x 50.8 cm, for very good quality (250 dpi) 24.1 x 16 inch or 61.1 x 40.6 cm, and for excellent quality (300 dpi) 20.1 x 13.3 inch or 50.9 x 33.9 cm. The corresponding values for the Sony NEX-F3 are 24.6 x 16.3 inch or 62.4 x 41.5 cm for good quality, 19.6 x 13.1 inch or 49.9 x 33.2 cm for very good quality, and 16.4 x 10.9 inch or 41.6 x 27.6 cm for excellent quality prints.

Unlike the NEX-F3, 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 Pentax K-3 II has a native sensitivity range from ISO 100 to ISO 51200. The corresponding ISO settings for the Sony Alpha NEX-F3 are ISO 100 to ISO 16000 (no boost).

K-3 II versus NEX-F3 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 review, the K-3 II has a notably higher overall DXO score than the NEX-F3 (overall score 7 points higher), which gives it an advantage in terms of imaging quality. This advantage is based on 0.9 bits higher color depth, 1.3 EV in additional dynamic range, and -0 stops of reduced 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 K-3 II APS-C 24.1 6016 40001080/60i23.613.6110680Pentax K-3 II
 
Sony NEX-F3 APS-C 16.0 4912 32641080/60i22.712.3111473Sony NEX-F3
 
Canon 80D APS-C 24.0 6000 40001080/60p23.613.2113579Canon 80D
 
Nikon D7200 APS-C 24.0 6000 40001080/60p24.514.6133387Nikon D7200
 
Panasonic GX8 Four Thirds 20.2 5184 38884K/30p23.512.680675Panasonic GX8
 
Pentax KP APS-C 24.1 6016 40001080/60i........Pentax KP
 
Pentax K-70 APS-C 24.0 6000 40001080/60i........Pentax K-70
 
Pentax K-3 APS-C 24.1 6016 40001080/60i23.713.4121680Pentax K-3
 
Pentax K-5 APS-C 16.1 4928 32641080/25p23.714.1116282Pentax K-5
 
Sony A6300 APS-C 24.0 6000 40004K/30p24.413.7143785Sony A6300
 
Sony A6500 APS-C 24.0 6000 40004K/30p24.513.7140585Sony A6500
 
Sony RX10 II 1-inch 20.0 5472 36484K/30p23.012.653170Sony RX10 II
 
Sony A5100 APS-C 24.0 6000 40001080/60p23.812.7134780Sony A5100
 
Sony NEX-3N APS-C 16.0 4912 32641080/60i22.812.5106774Sony NEX-3N
 
Sony NEX-5N APS-C 16.0 4912 32641080/60i23.612.7107977Sony NEX-5N
 
Sony NEX-3 APS-C 14.0 4592 3056720/30p22.112.083068Sony NEX-3
 
Sony NEX-5 APS-C 14.0 4592 30561080/60i22.212.279669Sony NEX-5

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, and both provide the same movie specifications (1080/60i).

 

Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. For example, the K-3 II has an optical viewfinder, which can be very useful when shooting in bright sunlight. In contrast, the NEX-F3 relies on live view and the rear LCD for framing. That said, the NEX-F3 can be equipped with an optional viewfinder – the FDA-EV1S. The following table reports on some other key feature differences and similarities of the Pentax K-3 II, the Sony NEX-F3, 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 K-3 IIoptical Y 3.2 1037 fixed n 1/8000s 8.3 n Y Pentax K-3 II
 
Sony NEX-F3optional n 3.0 920 tilting n 1/4000s 5.5 Y n Sony NEX-F3
 
Canon 80Doptical Y 3.0 1040 swivel Y 1/8000s 7.0 Y n Canon 80D
 
Nikon D7200optical Y 3.2 1229 fixed n 1/8000s 6.0 Y n Nikon D7200
 
Panasonic GX82360 n 3.0 1040 swivel Y 1/8000s 10.0 n Y Panasonic GX8
 
Pentax KPoptical n 3.0 921 tilting n 1/6000s 7.0 Y Y Pentax KP
 
Pentax K-70optical n 3.0 921 swivel n 1/6000s 6.0 Y Y Pentax K-70
 
Pentax K-3optical Y 3.2 1037 fixed n 1/8000s 8.3 Y Y Pentax K-3
 
Pentax K-5optical Y 3.0 921 fixed n 1/8000s 7.0 Y Y Pentax K-5
 
Sony A63002359 n 3.0 922 tilting n 1/4000s 11.0 Y n Sony A6300
 
Sony A65002359 n 3.0 922 tilting Y 1/4000s 11.0 Y Y Sony A6500
 
Sony RX10 II2359 Y 3.0 1229 tilting n 1/3200s 14.0 Y Y Sony RX10 II
 
Sony A5100none n 3.0 922 tilting Y 1/4000s 6.0 Y n Sony A5100
 
Sony NEX-3Noptional n 3.0 460 tilting n 1/4000s 4.0 Y n Sony NEX-3N
 
Sony NEX-5Noptional n 3.0 920 tilting Y 1/4000s 10.0 n n Sony NEX-5N
 
Sony NEX-3optional n 3.0 920 tilting n 1/4000s 7.0 n n Sony NEX-3
 
Sony NEX-5optional n 3.0 920 tilting n 1/4000s 7.0 n n Sony NEX-5

One feature that is present on the K-3 II, but is missing on the NEX-F3 is a top-level LCD. While being, of course, smaller than the rear screen, the control panel conveys some of the essential shooting information and can be convenient for quick and easy settings verification.

The NEX-F3 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 K-3 II does not have a selfie-screen.

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 K-3 II writes its imaging data to SDXC cards, while the NEX-F3 uses SDXC or Memory Stick PRO Duo cards. The K-3 II features dual card slots, which can be very useful in case a memory card fails. In contrast, the NEX-F3 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 NEX-F3 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 K-3 II and Sony Alpha NEX-F3 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
Port
WiFi
Support
NFC
Support
Bluetooth
Support
Camera
Model
 
Pentax K-3 IIYmonomonoYYmini3.0---Pentax K-3 II
 
Sony NEX-F3Ystereomono--mini2.0---Sony NEX-F3
 
Canon 80DYstereomonoYYmini2.0YY-Canon 80D
 
Nikon D7200YstereomonoYYmini2.0YY-Nikon D7200
 
Panasonic GX8YstereomonoY-micro2.0YY-Panasonic GX8
 
Pentax KPYstereomonoY-none2.0Y--Pentax KP
 
Pentax K-70YstereomonoY-mini2.0Y--Pentax K-70
 
Pentax K-3YmonomonoYYmini3.0---Pentax K-3
 
Pentax K-5YstereomonoY-mini2.0---Pentax K-5
 
Sony A6300YstereomonoY-micro2.0YY-Sony A6300
 
Sony A6500YstereomonoY-micro2.0YY-Sony A6500
 
Sony RX10 IIYstereomonoYYmicro2.0YY-Sony RX10 II
 
Sony A5100-stereomono--micro2.0YY-Sony A5100
 
Sony NEX-3N-stereomono--micro2.0---Sony NEX-3N
 
Sony NEX-5NYstereomono--mini2.0---Sony NEX-5N
 
Sony NEX-3Ystereomono--mini2.0---Sony NEX-3
 
Sony NEX-5Ystereomono--mini2.0---Sony NEX-5

It is notable that the K-3 II has a microphone port, which is missing on the NEX-F3. Such an external microphone input can help to substantially improve the quality of audio recordings when a good external microphone is used.

Studio photographers will appreciate that the Pentax K-3 II (unlike the NEX-F3) 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.

The K-3 II is a recent model that features in the current product line-up of Pentax. In contrast, the NEX-F3 has been discontinued (but it can be found pre-owned on eBay). There has not been a direct replacement model for the NEX-F3 from Sony. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Pentax and Sony websites.

Review summary

So how do things add up? Which of the two cameras – the Pentax K-3 II or the Sony NEX-F3 – 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 K-3 II:

  • More detail: Offers more megapixels (24.1 vs 16MP) with a 22% higher linear resolution.
  • 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 assessment.
  • More dynamic range: Captures a larger spectrum of light and dark details (1.3 EV of extra DR).
  • 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.
  • Easier framing: Has an optical viewfinder for image composition and settings control.
  • Easier setting verification: Features an LCD display on top to control shooting parameters.
  • 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 5.5 flaps/sec) to capture the decisive moment.
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • Longer lasting: Can take more shots (720 versus 470) on a single battery charge.
  • Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
  • Sharper images: Has hand-shake reducing image stabilization built-in.
  • 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 modern: Reflects 2 years and 11 months of technical progress since the NEX-F3 launch.

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Reasons to prefer the Sony Alpha NEX-F3:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
  • More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
  • More compact: Is smaller (117x67mm vs 131x100mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 486g or 61 percent) and is thus easier to take along.
  • More legacy lens friendly: Can use many non-native lenses via adapters.
  • Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
  • More affordable: Was introduced into a lower priced category (45 percent cheaper at launch).
  • More heavily discounted: Has been around for much longer (launched in May 2012).

If the count of individual advantages (bullet points above) is taken as a guide, the K-3 II is the clear winner of the match-up (23 : 9 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.

K-3 II 23:09 NEX-F3

How about other alternatives? Do the specifications of the Pentax K-3 II and the Sony NEX-F3 place the cameras among the top in their class? Find out in the latest Best DSLR Camera and Best Mirrorless Interchangeable Lens Camera listings 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 K-3 II or the NEX-F3. 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
cam
era
  labs  
dp
re
  view  
e
photo
  zine  
ima
ging
resource
photo
graphy
  blog  
Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Camera
Model
 
Pentax K-3 II....5/54.5/55/5 Apr 2015 1,099 iPentax K-3 II
 
Sony NEX-F3..74/1004.5/54.5/54.5/5 May 2012 599iSony NEX-F3
 
Canon 80D+ +84/1004.5/54.5/54.5/5 Feb 2016 1,199iCanon 80D
 
Nikon D7200+ +84/1004.5/54/54.5/5 Mar 2015 1,199iNikon D7200
 
Panasonic GX8+82/1004.5/55/54.5/5 Jul 2015 1,199iPanasonic GX8
 
Pentax KP..82/1005/5..4.5/5 Jan 2017 1,099 iPentax KP
 
Pentax K-70..79/1004.5/54/54.5/5 Jun 2016 649 iPentax K-70
 
Pentax K-3..83/1005/54.5/55/5 Oct 2013 1,299iPentax K-3
 
Pentax K-5..83/1005/54.5/54.5/5 Sep 2010 1,099iPentax K-5
 
Sony A6300+85/1005/55/55/5 Feb 2016 999iSony A6300
 
Sony A6500+ +85/1004.5/55/54.5/5 Oct 2016 1,399iSony A6500
 
Sony RX10 II+ +82/1004.5/54.5/54/5 Jun 2015 1,299iSony RX10 II
 
Sony A5100+..4.5/54.5/55/5 Aug 2014 549 iSony A5100
 
Sony NEX-3N....4.5/54/54.5/5 Feb 2013 499iSony NEX-3N
 
Sony NEX-5N+ +79/1004.5/55/54.5/5 Aug 2011 699iSony NEX-5N
 
Sony NEX-3..70/1004.5/55/54/5 May 2010 599iSony NEX-3
 
Sony NEX-5+ +71/1004.5/54/54/5 May 2010 699iSony NEX-5
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

Care should be taken when interpreting the review scores above, though. The assessments were made in relation to similar cameras of the same technological generation. Hence, a score should always be seen in the context of the camera's market launch date and its price, and comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

Pentax K-3 II:
Check Amazon price
Sony NEX-F3:
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 K-3 II vs Sony NEX-F3

    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 K-3 II Sony NEX-F3
    Camera Type Digital single lens reflex Mirrorless system camera
    Camera Lens Pentax K mount lenses Sony E mount lenses
    Launch Date April 2015 May 2012
    Launch Price USD 1099 USD 599
    Sensor Specs Pentax K-3 II Sony NEX-F3
    Sensor Technology CMOS CMOS
    Sensor Format APS-C Sensor APS-C Sensor
    Sensor Size 23.5 x 15.6 mm 23.4 x 15.6 mm
    Sensor Area 366.6 mm2 365.04 mm2
    Sensor Diagonal 28.2 mm 28.1 mm
    Crop Factor 1.5x 1.5x
    Sensor Resolution 24.1 Megapixels 16 Megapixels
    Image Resolution 6016 x 4000 pixels 4912 x 3264 pixels
    Pixel Pitch 3.90 μm 4.78 μm
    Pixel Density 6.56 MP/cm2 4.39 MP/cm2
    Moiré control no AA filter Anti-Alias filter
    Movie Capability 1080/60i Video 1080/60i Video
    ISO Setting 100-51200 ISO 100-16000 ISO
    Image Processor PRIME III BIONZ
    DXO Sensor Quality (score) 80 73
    DXO Color Depth (bits) 23.6 22.7
    DXO Dynamic Range (EV) 13.6 12.3
    DXO Low Light (ISO) 1106 1114
    Screen Specs Pentax K-3 II Sony NEX-F3
    Viewfinder Type Optical viewfinder Viewfinder optional
    Viewfinder Field of View 100%
    Viewfinder Magnification 0.63x
    Top-Level Screen Control Panel no Top Display
    LCD Framing Live View Live View
    Rear LCD Size 3.2 inch 3.0 inch
    LCD Resolution 1037k dots 920k dots
    LCD Attachment Fixed screen Tilting screen
    Shooting Specs Pentax K-3 II Sony NEX-F3
    Autofocus System Phase-detect AF Contrast-detect AF
    Manual Focusing AidFocus PeakingNo Peaking Feature
    Continuous Shooting 8.3 shutter flaps/s 5.5 shutter flaps/s
    Time-Lapse PhotographyIntervalometer built-inno Intervalometer
    Image StabilizationIn-body stabilizationLens stabilization only
    Fill Flash no On-Board Flash Build-in Flash
    Storage Medium SDXC cards MS or SDXC cards
    Second Storage Option Dual card slots Single card slot
    UHS card support UHS-I no
    Connectivity Specs Pentax K-3 II Sony NEX-F3
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket no PC Sync
    USB Connector USB 3.0 USB 2.0
    HDMI Port mini HDMI mini HDMI
    Microphone Port External MIC port no MIC socket
    Headphone Socket Headphone port no Headphone port
    Wifi Support no Wifi no Wifi
    Geotagging GPS built-in no internal GPS
    Body Specs Pentax K-3 II Sony NEX-F3
    Environmental SealingWeathersealed bodyNot weather sealed
    Battery Type D-LI90 NP-FW50
    Battery Life (CIPA)720 shots per charge470 shots per charge
    Body Dimensions 131 x 100 x 77 mm
    (5.2 x 3.9 x 3.0 in)
    117 x 67 x 42 mm
    (4.6 x 2.6 x 1.7 in)
    Camera Weight 800 g (28.2 oz) 314 g (11.1 oz)

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