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Pentax K-3 vs Sony A77 II

The Pentax K-3 and the Sony Alpha SLT-A77 II are two enthusiast cameras that were revealed to the public, respectively, in October 2013 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
versus
Sony A77 II
Pentax K-3   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
560 shots per battery charge480 shots per battery charge
131 x 100 x 77 mm, 800 g 143 x 104 x 81 mm, 647 g
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Going beyond this snapshot of core features and characteristics, what are the differences between the Pentax K-3 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.

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Body comparison

The physical size and weight of the Pentax K-3 and the Sony A77 II are illustrated in the side-by-side display below. The two cameras are presented according to their relative size. 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.

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

Size Pentax K-3 vs Sony A77 II
Compare K-3 versus A77 II top
Comparison K-3 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. However, the A77 II is markedly lighter (19 percent) than the K-3. 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 gets 560 shots out of its Pentax D-LI90 battery, while the A77 II can take 480 images on a single charge of its Sony NP-FM500H 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, 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
  empty Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price
Street
Price
1.
 
Pentax K-3 131 mm 100 mm 77 mm 800 g 560 Y Oct 2013 US$ 1 299ebay.com
2.
 
Sony A77 II 143 mm 104 mm 81 mm 647 g 480 Y May 2014 US$ 1 199ebay.com
3.
 
Nikon D7100 136 mm 107 mm 76 mm 765 g 950 Y Feb 2013 US$ 1 199ebay.com
4.
 
Pentax K-3 II 131 mm 100 mm 77 mm 800 g 720 Y Apr 2015 US$ 1 099ebay.com
5.
 
Pentax K-5 131 mm 97 mm 73 mm 760 g 740 Y Sep 2010 US$ 1 099ebay.com
6.
 
Pentax K-5 II 131 mm 97 mm 73 mm 760 g 740 Y Sep 2012 US$ 1 099ebay.com
7.
 
Pentax K-50 130 mm 97 mm 71 mm 650 g 410 Y Jun 2013 US$ 599ebay.com
8.
 
Pentax K-70 126 mm 93 mm 74 mm 688 g 410 Y Jun 2016 US$ 649ebay.com
9.
 
Pentax KP 132 mm 101 mm 76 mm 703 g 390 Y Jan 2017 US$ 1 099ebay.com
10.
 
Pentax K-S1 121 mm 93 mm 70 mm 558 g 410 n Aug 2014 US$ 749ebay.com
11.
 
Pentax K-S2 123 mm 91 mm 73 mm 678 g 410 Y Feb 2015 US$ 749ebay.com
12.
 
Sony A58 129 mm 95 mm 78 mm 492 g 690 n Feb 2013 US$ 599ebay.com
13.
 
Sony A68 143 mm 104 mm 81 mm 610 g 540 n Nov 2015 US$ 699ebay.com
14.
 
Sony A77 143 mm 104 mm 81 mm 732 g 470 Y Aug 2011 US$ 1 399ebay.com
15.
 
Sony A6600 120 mm 67 mm 69 mm 503 g 810 Y Aug 2019 US$ 1 399 amazon.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 retail prices at the time of the camera’s release place the model in the market relative to other models in the producer’s line-up and the competition. The A77 II was somewhat cheaper (by 8 percent) than the K-3 at launch, but both cameras fall into the same price category. 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.

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 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 and Sony A77 II sensor measures

While the two cameras under review share the same sensor size, the K-3 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 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). Moreover, it should be noted that the A77 II is a somewhat more recent model (by 6 months) than the K-3, and its sensor might have benefitted from technological advances during this time that further enhance the light gathering capacity of individual pixels. Coming back to sensor resolution, it should be mentioned that the K-3 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The Pentax K-3 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.

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.

K-3 versus A77 II MP

For many cameras, data on sensor performance has been reported by DXO Mark. This service determines an overall sensor rating, as well as sub-scores for low-light sensitivity ("DXO Sports"), dynamic range ("DXO Landscape"), and color depth ("DXO Portrait"). The Overall DXO ratings for the two cameras under consideration are close, suggesting that they provide similar imaging performance. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.

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Sensor Characteristics
  empty Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Pentax K-3 APS-C 24.1 6016 40001080/60i23.713.4121680
2.
 
Sony A77 II APS-C 24.0 6000 40001080/60p24.413.4101382
3.
 
Nikon D7100 APS-C 24.0 6000 40001080/60p24.213.7125683
4.
 
Pentax K-3 II APS-C 24.1 6016 40001080/60i23.613.6110680
5.
 
Pentax K-5 APS-C 16.1 4928 32641080/25p23.714.1116282
6.
 
Pentax K-5 II APS-C 16.1 4928 32641080/25p23.814.1123582
7.
 
Pentax K-50 APS-C 16.1 4928 32641080/30p23.713.0112079
8.
 
Pentax K-70 APS-C 24.0 6000 40001080/60i23.813.1163980
9.
 
Pentax KP APS-C 24.1 6016 40001080/60i23.913.2169981
10.
 
Pentax K-S1 APS-C 20.0 5472 36481080/30p23.513.0106178
11.
 
Pentax K-S2 APS-C 20.0 5472 36481080/30p23.612.9151479
12.
 
Sony A58 APS-C 19.8 5456 36321080/60i23.312.575374
13.
 
Sony A68 APS-C 24.0 6000 40001080/60i24.113.570179
14.
 
Sony A77 APS-C 24.0 6000 40001080/60p24.013.280178
15.
 
Sony A6600 APS-C 24.0 6000 40004K/30p23.813.4149782
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. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the A77 II provides a faster frame rate than the K-3. It can shoot movie footage at 1080/60p, while the Pentax is limited to 1080/60i.

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Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. For example, the A77 II has an electronic viewfinder (2359k dots), while the K-3 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 (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 following table reports on some other key feature differences and similarities of the Pentax K-3, the Sony A77 II, and comparable cameras.

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Core Features
  empty 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.
 
Pentax K-3optical Y3.2 / 1037 fixed n 1/8000s 8.3/s Y Y
2.
 
Sony A77 II2359 Y3.0 / 1229 full-flex n 1/8000s 12.0/s Y Y
3.
 
Nikon D7100optical Y3.2 / 1229 fixed n 1/8000s 6.0/s Y n
4.
 
Pentax K-3 IIoptical Y3.2 / 1037 fixed n 1/8000s 8.3/s n Y
5.
 
Pentax K-5optical Y3.0 / 921 fixed n 1/8000s 7.0/s Y Y
6.
 
Pentax K-5 IIoptical Y3.0 / 921 fixed n 1/8000s 7.0/s Y Y
7.
 
Pentax K-50optical n3.0 / 921 fixed n 1/6000s 6.0/s Y Y
8.
 
Pentax K-70optical n3.0 / 921 swivel n 1/6000s 6.0/s Y Y
9.
 
Pentax KPoptical n3.0 / 921 tilting n 1/6000s 7.0/s Y Y
10.
 
Pentax K-S1optical n3.0 / 921 fixed n 1/6000s 5.4/s Y Y
11.
 
Pentax K-S2optical n3.0 / 921 swivel n 1/6000s 5.4/s Y Y
12.
 
Sony A581440 n2.7 / 460 tilting n 1/4000s 5.0/s Y Y
13.
 
Sony A681440 Y2.7 / 460 tilting n 1/4000s 8.0/s Y Y
14.
 
Sony A772359 Y3.0 / 921 full-flex n 1/8000s 12.0/s Y Y
15.
 
Sony A66002359 n3.0 / 922 tilting Y 1/4000s 11.0/s n Y
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.
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 does not have a selfie-screen.

The Pentax K-3 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 writes its imaging data to SDXC cards, while the A77 II uses SDXC or Memory Stick PRO Duo cards. The K-3 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.

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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 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
  empty Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Pentax K-3Ymono / monoYYmini3.0---
2.
 
Sony A77 IIYstereo / monoY-mini2.0YY-
3.
 
Nikon D7100Ystereo / monoYYmini2.0---
4.
 
Pentax K-3 IIYmono / monoYYmini3.0---
5.
 
Pentax K-5Ystereo / monoY-mini2.0---
6.
 
Pentax K-5 IIYstereo / monoY-mini2.0---
7.
 
Pentax K-50Ymono / mono--micro2.0---
8.
 
Pentax K-70Ystereo / monoY-mini2.0Y--
9.
 
Pentax KPYstereo / monoY--2.0Y--
10.
 
Pentax K-S1Ystereo / mono--micro2.0---
11.
 
Pentax K-S2Ymono / monoY-micro2.0YY-
12.
 
Sony A58Ystereo / monoY-mini2.0---
13.
 
Sony A68Ystereo / monoY-micro2.0---
14.
 
Sony A77Ystereo / monoY-mini2.0---
15.
 
Sony A6600Ystereo / monoYYYES2.0YYY

It is notable that the K-3 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.

Both the K-3 and the A77 II have been discontinued, but can regularly be found used on ebay. The K-3 was replaced by the Pentax K-3 II, while the A77 II does not have a direct successor. Further information on the features and operation of the K-3 and A77 II can be found, respectively, in the Pentax K-3 Manual (free pdf) or the online Sony A77 II Manual.

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Review summary

So how do things add up? Which of the two cameras – the Pentax K-3 or the Sony A77 II – has the upper hand? Is one clearly better than the other? The listing below highlights the relative strengths of the two models.

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Reasons to prefer the Pentax K-3:

  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • 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 (560 versus 480) on a single battery charge.
  • 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 heavily discounted: Has been on the market for longer (launched in October 2013).

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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 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 modern: Was introduced somewhat (6 months) more recently.

If the count of relative strengths (bullet points above) is taken as a measure, the A77 II emerges as the winner of the match-up (12 : 10 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 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.

K-3 10:12 A77 II

How about other alternatives? Do the specifications of the Pentax K-3 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 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 K-3 and the A77 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 why expert reviews are important. The adjacent summary-table relays the overall verdicts of several of the most popular camera 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
  empty  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price
Street
Price
1.
 
Pentax K-34/5....83/1005/55/5 Oct 2013 US$ 1 299ebay.com
2.
 
Sony A77 II4/5....80/1004.5/55/5 May 2014 US$ 1 199ebay.com
3.
 
Nikon D71005/5+ +..85/1004.5/54.5/5 Feb 2013 US$ 1 199ebay.com
4.
 
Pentax K-3 II4.5/5......5/55/5 Apr 2015 US$ 1 099ebay.com
5.
 
Pentax K-54/5....83/1005/54.5/5 Sep 2010 US$ 1 099ebay.com
6.
 
Pentax K-5 II5/5....80/1005/54.5/5 Sep 2012 US$ 1 099ebay.com
7.
 
Pentax K-505/5......5/54.5/5 Jun 2013 US$ 599ebay.com
8.
 
Pentax K-704.5/5..4/579/1004.5/54.5/5 Jun 2016 US$ 649ebay.com
9.
 
Pentax KP4/5..3/582/1005/54.5/5 Jan 2017 US$ 1 099ebay.com
10.
 
Pentax K-S14/5......4.5/54/5 Aug 2014 US$ 749ebay.com
11.
 
Pentax K-S24.5/5......5/54.5/5 Feb 2015 US$ 749ebay.com
12.
 
Sony A583/5......4.5/54.5/5 Feb 2013 US$ 599ebay.com
13.
 
Sony A683/5......4/54/5 Nov 2015 US$ 699ebay.com
14.
 
Sony A775/591/100..81/100..5/5 Aug 2011 US$ 1 399ebay.com
15.
 
Sony A66004/5+4/583/1004.5/54/5 Aug 2019 US$ 1 399 amazon.com
Note: (+ +) 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. 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. It should also be noted that some of the review sites have over time altered the way they render their verdicts.

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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 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 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 October 2013 May 2014
    Launch Price USD 1,299 USD 1,199
    Sensor Specs Pentax K-3 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 82
    DXO Color Depth (bits) 23.7 24.4
    DXO Dynamic Range (EV) 13.4 13.4
    DXO Low Light (ISO) 1216 1013
    Screen Specs Pentax K-3 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 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 Built-in Flash Built-in Flash
    Storage Medium SDXC cards MS or SDXC cards
    Single or Dual Card Slots Dual card slots Single card slot
    UHS card support UHS-I UHS-I
    Connectivity Specs Pentax K-3 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
    Body Specs Pentax K-3 Sony A77 II
    Environmental SealingWeathersealed bodyWeathersealed body
    Battery Type Pentax D-LI90 Sony NP-FM500H
    Battery Life (CIPA)560 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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