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Pentax K-3 II vs Sony A77 II

The Pentax K-3 II and the Sony Alpha SLT-A77 II are two enthusiast cameras that were announced, respectively, in April 2015 and May 2014. Both are DSLR (Digital Single Lens Reflex) cameras that are equipped with an APS-C sensor. The Pentax has a resolution of 24.1 megapixels, whereas the Sony provides 24 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 versus Sony A77 II
Pentax K-3 II Sony A77 II
Digital single lens reflex Digital single lens reflex
Pentax K mount lenses Sony A mount lenses
24.1 MP, APS-C Sensor 24 MP, APS-C Sensor
1080/60i Video 1080/60p Video
ISO 100-51,200 ISO 100-25,600 (50 - 51,200)
Optical viewfinder Electronic viewfinder (2359k dots)
3.2 LCD, 1037k dots 3.0 LCD, 1229k dots
Fixed screen (not touch-sensitive) Fully flexible screen (no touchscreen)
8.3 shutter flaps per second 12 shutter flaps per second
In-body stabilizationIn-body stabilization
Weathersealed bodyWeathersealed body
720 shots per battery charge480 shots per battery charge
131 x 100 x 77 mm, 800 g 143 x 104 x 81 mm, 647 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Pentax K-3 II and the Sony Alpha SLT-A77 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

The side-by-side display below illustrates the physical size and weight of the Pentax K-3 II and the Sony A77 II. 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 dimensions are rounded to the nearest millimeter.

The K-3 II can be obtained in two different colors (black, silver), while the A77 II is only available in black.

Size Pentax K-3 II vs Sony A77 II
Compare K-3 II versus A77 II top
Comparison K-3 II or A77 II rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A77 II is notably larger (14 percent) than the Pentax K-3 II. However, the A77 II is markedly lighter (19 percent) than the K-3 II. 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 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 A77 II can take 480 images on a single charge of its NP-FM500H power pack.

The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. 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 camera comparisons there.

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Body Specifications
  Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life 1
Weather
Sealing
Camera
Launch 2
Launch
Price (USD)
Street
Price
 
Pentax K-3 II 131 mm 100 mm 77 mm 800 g 720 Y Apr 2015 1,099 i
 
Sony A77 II 143 mm 104 mm 81 mm 647 g 480 Y May 2014 1,199 i
 
Canon 80D 139 mm 105 mm 79 mm 730 g 960 Y Feb 2016 1,199i
 
Canon G3 X 123 mm 77 mm 105 mm 733 g 300 Y Jun 2015 999 i
 
Nikon D7500 136 mm 104 mm 73 mm 720 g 950 Y Apr 2017 1,299 i
 
Nikon D7200 136 mm 107 mm 76 mm 765 g 1110 Y Mar 2015 1,199i
 
Panasonic GH5 139 mm 98 mm 87 mm 725 g 410 Y Jan 2017 1,999 i
 
Panasonic GX8 133 mm 78 mm 63 mm 487 g 330 Y Jul 2015 1,199i
 
Pentax KP 132 mm 101 mm 76 mm 703 g 390 Y Jan 2017 1,099 i
 
Pentax K-70 126 mm 93 mm 74 mm 688 g 410 Y Jun 2016 649 i
 
Pentax K-3 131 mm 100 mm 77 mm 800 g 560 Y Oct 2013 1,299i
 
Pentax K-5 131 mm 97 mm 73 mm 760 g 740 Y Sep 2010 1,099i
 
Sony RX10 II 129 mm 88 mm 102 mm 813 g 400 Y Jun 2015 1,299i
 
Sony A68 143 mm 104 mm 81 mm 610 g 540 n Nov 2015 699i
 
Sony A7 II 127 mm 96 mm 60 mm 599 g 350 Y Nov 2014 1,999i
 
Sony A77 143 mm 104 mm 81 mm 732 g 470 Y Aug 2011 1,399i
Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
(1) Number of images that can be taken on a full battery charge according to the CIPA-standard; (2) Official announcement.

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 K-3 II was somewhat cheaper (by 8 percent) than the A77 II at launch, but both cameras fall into the same price category. 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 imaging sensor is at the core of digital cameras and its size is one of the main determining factors 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. 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 associated with larger, more expensive camera bodies 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.

Pentax K-3 II and Sony A77 II sensor measures

While the two cameras under review share the same sensor size, the K-3 II offers a slightly higher resolution of 24.1 megapixels, compared with 24 MP of the A77 II. This megapixels advantage translates into a 0.3 percent gain in linear resolution. On the other hand, these sensor specs imply that the K-3 II has a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 3.90μm versus 3.91μm for the A77 II). In this context, it should be noted, however, that the K-3 II is a somewhat more recent model (by 11 months) than the A77 II, and its sensor might have benefitted from technological advances during this time that at least partly compensate for the smaller pixel size. 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.

Unlike the A77 II, 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 SLT-A77 II are ISO 100 to ISO 25600, with the possibility to increase the ISO range to 50-51200.

K-3 II versus A77 II MP

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service assesses and scores the color depth ("DXO Portrait"), dynamic range ("DXO Landscape"), and low-light sensitivity ("DXO Sports") of camera sensors, and also publishes an overall camera score. The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.

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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
 
Pentax K-3 II APS-C 24.1 6016 40001080/60i23.613.6110680
 
Sony A77 II APS-C 24.0 6000 40001080/60p........
 
Canon 80D APS-C 24.0 6000 40001080/60p23.613.2113579
 
Canon G3 X 1-inch 20.0 5472 36481080/60p21.412.352163
 
Nikon D7500 APS-C 20.7 5568 37124K/30p24.314.0148386
 
Nikon D7200 APS-C 24.0 6000 40001080/60p24.514.6133387
 
Panasonic GH5 Four Thirds 20.2 5184 38884K/60p23.913.080777
 
Panasonic GX8 Four Thirds 20.2 5184 38884K/30p23.512.680675
 
Pentax KP APS-C 24.1 6016 40001080/60i........
 
Pentax K-70 APS-C 24.0 6000 40001080/60i........
 
Pentax K-3 APS-C 24.1 6016 40001080/60i23.713.4121680
 
Pentax K-5 APS-C 16.1 4928 32641080/25p23.714.1116282
 
Sony RX10 II 1-inch 20.0 5472 36484K/30p23.012.653170
 
Sony A68 APS-C 24.0 6000 40001080/60i24.113.570179
 
Sony A7 II Full Frame 24.0 6000 40001080/60p24.913.6244990
 
Sony A77 APS-C 24.0 6000 40001080/60p24.013.280178

Many modern cameras are not only capable of taking still images, but can also record movies. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, but the A77 II provides a faster frame rate than the K-3 II. It can shoot movie footage at 1080/60p, while the Pentax is limited to 1080/60i.

Feature comparison

Apart from body and sensor, cameras can and do differ across a range of features. For example, the A77 II has an electronic viewfinder (2359k dots), while the K-3 II has an optical one. Both systems have their advantages, with the electronic viewfinder making it possible to project supplementary shooting information into the framing view, whereas the optical viewfinder offers lag-free viewing and a very clear framing image. The viewfinders of both cameras offer the same field of view (100%), but the viewfinder of the A77 II has a higher magnification than the one of the K-3 II (0.73x vs 0.63x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The adjacent table lists some of the other core features of the Pentax K-3 II and Sony A77 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
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
 
Pentax K-3 IIoptical Y 3.2 1037 fixed n 1/8000s 8.3 n Y
 
Sony A77 II2359 Y 3.0 1229 full-flex n 1/8000s 12.0 Y Y
 
Canon 80Doptical Y 3.0 1040 swivel Y 1/8000s 7.0 Y n
 
Canon G3 Xoptional n 3.2 1620 tilting Y 1/2000s 5.9 Y Y
 
Nikon D7500optical Y 3.2 922 tilting Y 1/8000s 8.0 Y n
 
Nikon D7200optical Y 3.2 1229 fixed n 1/8000s 6.0 Y n
 
Panasonic GH53680 n 3.2 1620 swivel Y 1/8000s 12.0 n Y
 
Panasonic GX82360 n 3.0 1040 swivel Y 1/8000s 10.0 n Y
 
Pentax KPoptical n 3.0 921 tilting n 1/6000s 7.0 Y Y
 
Pentax K-70optical n 3.0 921 swivel n 1/6000s 6.0 Y Y
 
Pentax K-3optical Y 3.2 1037 fixed n 1/8000s 8.3 Y Y
 
Pentax K-5optical Y 3.0 921 fixed n 1/8000s 7.0 Y Y
 
Sony RX10 II2359 Y 3.0 1229 tilting n 1/3200s 14.0 Y Y
 
Sony A681440 Y 2.7 460 tilting n 1/4000s 8.0 Y Y
 
Sony A7 II2400 n 3.0 1230 tilting n 1/8000s 5.0 n Y
 
Sony A772359 Y 3.0 921 full-flex n 1/8000s 12.0 Y Y

One difference between the cameras concerns the presence of an on-board flash. The A77 II has one, while the K-3 II does not. While the built-in flash of the A77 II is not very powerful, it can at times be useful as a fill-in light.

The A77 II 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 A77 II 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 A77 II only has one slot. Both cameras can use UHS-I cards, which provide for Ultra High Speed data transfer of up to 104 MB/s.

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 SLT-A77 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
Microphone
Internal
Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
 
Pentax K-3 IIYmonomonoYYmini3.0---
 
Sony A77 IIYstereomonoY-mini2.0YY-
 
Canon 80DYstereomonoYYmini2.0YY-
 
Canon G3 XYstereomonoYYmini2.0YY-
 
Nikon D7500YstereomonoYYmini2.0Y-Y
 
Nikon D7200YstereomonoYYmini2.0YY-
 
Panasonic GH5YstereomonoYYfull3.1Y-Y
 
Panasonic GX8YstereomonoY-micro2.0YY-
 
Pentax KPYstereomonoY--2.0Y--
 
Pentax K-70YstereomonoY-mini2.0Y--
 
Pentax K-3YmonomonoYYmini3.0---
 
Pentax K-5YstereomonoY-mini2.0---
 
Sony RX10 IIYstereomonoYYmicro2.0YY-
 
Sony A68YstereomonoY-micro2.0---
 
Sony A7 IIYstereomonoYYmicro2.0YY-
 
Sony A77YstereomonoY-mini2.0---

It is notable that the K-3 II has a headphone jack, which is not present on the A77 II This port makes it possible to attach external headphones and monitor the quality of sound during the recording process.

Both cameras feature a PC Sync terminal to control professional strobe lights, which will be appreciated by studio photographers.

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 K-3 II and the A77 II are recent models that are part of the current product line-up. The A77 II replaced the earlier Sony A77, while the K-3 II followed on from the Pentax K-3. 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 A77 II – 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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Advantages of the Pentax K-3 II:

  • 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 sound control: Has a headphone port that enables audio monitoring while recording.
  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • Larger screen: Has a bigger rear LCD (3.2" vs 3.0") for image review and settings control.
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • More compact: Is smaller (131x100mm vs 143x104mm) and thus needs less room in the bag.
  • Longer lasting: Can take more shots (720 versus 480) on a single battery charge.
  • 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).
  • Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
  • More modern: Is somewhat more recent (announced 11 months after the A77 II).

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Arguments in favor of the Sony Alpha SLT-A77 II:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Better video: Provides higher movie framerates (1080/60p versus 1080/60i).
  • More framing info: Has an electronic viewfinder that displays shooting data.
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.73x vs 0.63x).
  • More detailed LCD: Has a higher resolution rear screen (1229k vs 1037k dots).
  • More flexible LCD: Has a full-flex screen for odd-angle shots in portrait or landscape orientation.
  • More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
  • Faster burst: Shoots at higher frequency (12 vs 8.3 flaps/sec) to capture the decisive moment.
  • Less heavy: Has a lower weight (by 153g or 19 percent) and is thus easier to take along.
  • Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
  • 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.
  • More heavily discounted: Has been on the market for longer (launched in May 2014).

If the count of relative strengths (bullet points above) is taken as a measure, the A77 II comes out slightly ahead of the K-3 II (13 : 12 points). However, the relative importance of the various individual camera aspects will vary according to personal preferences and needs, so that you might like to apply corresponding weights to the particular features before making a decision on a new camera. A professional sports photographer will view the differences between cameras in a way that diverges from the perspective of a street photog, and a person interested in family portraits has distinct needs from a landscape shooter. Hence, the decision which camera is best and worth buying is often a very personal one.

K-3 II 12:13 A77 II

How about other alternatives? Do the specifications of the Pentax K-3 II and the Sony A77 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 specs-based evaluation of cameras can be instructive in revealing their potential as photographic tools, it remains incomplete and does no justice, for example, to the way the K-3 II or the A77 II perform in practice. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased.

Expert reviews

This is why expert reviews are important. The table below provides a synthesis of the camera assessments of some of the best known photo-gear 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.

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Review Scores
  Camera
Model
camera
  labs  
dp
review  
ephoto
  zine  
imaging
resource
photography
  blog  
Camera
Launch
Launch
Price (USD)
Street
Price
 
Pentax K-3 II....5/54.5/55/5 Apr 2015 1,099 i
 
Sony A77 II..80/1004.5/54/55/5 May 2014 1,199 i
 
Canon 80D+ +84/1004.5/54.5/54.5/5 Feb 2016 1,199i
 
Canon G3 X+..4.5/53.5/54/5 Jun 2015 999 i
 
Nikon D7500+ +86/1005/54.5/54.5/5 Apr 2017 1,299 i
 
Nikon D7200+ +84/1004.5/54/54.5/5 Mar 2015 1,199i
 
Panasonic GH5+ +85/1004.5/55/55/5 Jan 2017 1,999 i
 
Panasonic GX8+82/1004.5/55/54.5/5 Jul 2015 1,199i
 
Pentax KP..82/1005/5..4.5/5 Jan 2017 1,099 i
 
Pentax K-70..79/1004.5/54/54.5/5 Jun 2016 649 i
 
Pentax K-3..83/1005/54.5/55/5 Oct 2013 1,299i
 
Pentax K-5..83/1005/54.5/54.5/5 Sep 2010 1,099i
 
Sony RX10 II+ +82/1004.5/54.5/54/5 Jun 2015 1,299i
 
Sony A68....4/5..4/5 Nov 2015 699i
 
Sony A7 II+82/1004.5/55/55/5 Nov 2014 1,999i
 
Sony A7791/10081/100..4.5/55/5 Aug 2011 1,399i
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

Care should be taken when interpreting the review scores above, though. The ratings are only valid when referring to cameras in the same category and of the same age. 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.

Pentax K-3 II:
Check Amazon price
Sony A77 II:
Check Amazon price

Other camera comparisons

Did this review help to inform your camera decision process? If you would like to see a different side-by-side camera review, just make a corresponding selection in the search boxes below. 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 A77 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 Pentax K-3 II Sony A77 II
    Camera Type Digital single lens reflex Digital single lens reflex
    Camera Lens Pentax K mount lenses Sony A mount lenses
    Launch Date April 2015 May 2014
    Launch Price USD 1,099 USD 1,199
    Sensor Specs Pentax K-3 II Sony A77 II
    Sensor Technology CMOS CMOS
    Sensor Format APS-C Sensor APS-C Sensor
    Sensor Size 23.5 x 15.6 mm 23.5 x 15.6 mm
    Sensor Area 366.6 mm2 366.6 mm2
    Sensor Diagonal 28.2 mm 28.2 mm
    Crop Factor 1.5x 1.5x
    Sensor Resolution 24.1 Megapixels 24 Megapixels
    Image Resolution 6016 x 4000 pixels 6000 x 4000 pixels
    Pixel Pitch 3.90 μm 3.91 μm
    Pixel Density 6.56 MP/cm2 6.55 MP/cm2
    Moiré control no AA filter Anti-Alias filter
    Movie Capability 1080/60i Video 1080/60p Video
    ISO Setting 100 - 51,200 ISO 100 - 25,600 ISO
    ISO Boost no Enhancement 50 - 51,200 ISO
    Image Processor PRIME III BIONZ X
    DXO Sensor Quality (score) 80 ..
    DXO Color Depth (bits) 23.6 ..
    DXO Dynamic Range (EV) 13.6 ..
    DXO Low Light (ISO) 1106 ..
    Screen Specs Pentax K-3 II Sony A77 II
    Viewfinder Type Optical viewfinder Electronic viewfinder
    Viewfinder Field of View 100% 100%
    Viewfinder Magnification 0.63x 0.73x
    Viewfinder Resolution 2359k dots
    Top-Level Screen Control Panel Control Panel
    LCD Framing Live View Live View
    Rear LCD Size 3.2inch 3.0inch
    LCD Resolution 1037k dots 1229k dots
    LCD Attachment Fixed screen Fully flexible screen
    Shooting Specs Pentax K-3 II Sony A77 II
    Focus System Phase-detect AF Phase-detect AF
    Manual Focusing AidFocus PeakingFocus Peaking
    Max Shutter Speed (mechanical) 1/8000s 1/8000s
    Continuous Shooting 8.3 shutter flaps/s 12 shutter flaps/s
    Shutter Life Expectancy200 000 actuations150 000 actuations
    Time-Lapse PhotographyIntervalometer built-inno Intervalometer
    Image StabilizationIn-body stabilizationIn-body stabilization
    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 UHS-I
    Connectivity Specs Pentax K-3 II Sony A77 II
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket PC Sync socket
    USB Connector USB 3.0 USB 2.0
    HDMI Port mini HDMI mini HDMI
    Microphone Port External MIC port External MIC port
    Headphone Socket Headphone port no Headphone port
    Wifi Support no Wifi Wifi built-in
    Near-Field Communication no NFC NFC built-in
    Geotagging GPS built-in no internal GPS
    Body Specs Pentax K-3 II Sony A77 II
    Environmental SealingWeathersealed bodyWeathersealed body
    Battery Type D-LI90 NP-FM500H
    Battery Life (CIPA)720 shots per charge480 shots per charge
    Body Dimensions 131 x 100 x 77 mm
    (5.2 x 3.9 x 3.0 in)
    143 x 104 x 81 mm
    (5.6 x 4.1 x 3.2 in)
    Camera Weight 800 g (28.2 oz) 647 g (22.8 oz)

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