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Pentax K-1 II vs Sony A77

Portability
55
Imaging
78
Features
82
Overall
79
Pentax K-1 Mark II front
 
Sony SLT-A77 front
Portability
59
Imaging
64
Features
83
Overall
71

Pentax K-1 II vs Sony A77 Key Specs

Pentax K-1 II
(Full Review)
  • 36MP - Full frame Sensor
  • 3.2" Fully Articulated Screen
  • ISO 100 - 819200
  • Sensor based 5-axis Image Stabilization
  • No Anti-Alias Filter
  • 1/8000s Max Shutter
  • 1920 x 1080 video
  • Pentax KAF4 Mount
  • 1010g - 137 x 110 x 86mm
  • Launched February 2018
  • Previous Model is Pentax K-1
Sony A77
(Full Review)
  • 24MP - APS-C Sensor
  • 3" Fully Articulated Screen
  • ISO 50 - 16000 (Increase to 25600)
  • Sensor based Image Stabilization
  • 1/8000s Max Shutter
  • 1920 x 1080 video
  • Sony/Minolta Alpha Mount
  • 732g - 143 x 104 x 81mm
  • Introduced October 2011
  • Superseded the Sony A700
  • Updated by Sony A77 II
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Pentax K-1 II vs Sony A77 Overview

On this page, we will be looking at the Pentax K-1 II and Sony A77, both Advanced DSLR cameras by manufacturers Pentax and Sony. There exists a sizeable gap among the image resolutions of the K-1 II (36MP) and A77 (24MP) and the K-1 II (Full frame) and A77 (APS-C) boast different sensor sizes.

Photography Glossary

The K-1 II was brought out 6 years later than the A77 and that is a fairly large gap as far as camera technology is concerned. Each of these cameras have the same body design (Mid-size SLR).

Before diving right into a full comparison, here is a quick synopsis of how the K-1 II scores against the A77 when it comes to portability, imaging, features and an overall rating.

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Reasons to pick Pentax K-1 II over the Sony A77

 K-1 II A77 
IntroducedFebruary 2018October 2011Fresher by 78 months
Screen dimensions3.2"3"Bigger screen (+0.2")
Screen resolution1037k921kSharper screen (+116k dot)

Reasons to pick Sony A77 over the Pentax K-1 II

 A77 K-1 II 
Selfie screen Take selfies

Common features in the Pentax K-1 II and Sony A77

 K-1 II A77 
Manual focus Dial accurate focusing
Screen typeFully ArticulatedFully ArticulatedFully Articulated screen
Touch friendly screen Neither includes Touch friendly screen

Pentax K-1 II vs Sony A77 Physical Comparison

In case you're going to carry your camera frequently, you are going to need to think about its weight and proportions. The Pentax K-1 II features outer measurements of 137mm x 110mm x 86mm (5.4" x 4.3" x 3.4") and a weight of 1010 grams (2.23 lbs) whilst the Sony A77 has measurements of 143mm x 104mm x 81mm (5.6" x 4.1" x 3.2") along with a weight of 732 grams (1.61 lbs).

Examine the Pentax K-1 II and Sony A77 in the all new Camera with Lens Size Comparison Tool. Camera Size Comparison with Lenses

Always remember, the weight of an Interchangeable Lens Camera will differ based on the lens you are employing at that moment. Underneath is a front view overall size comparison of the K-1 II compared to the A77.

Pentax K-1 II vs Sony A77 size comparison

Looking at dimensions and weight, the portability rating of the K-1 II and A77 is 55 and 59 respectively.

Pentax K-1 II vs Sony A77 top view buttons comparison

Pentax K-1 II vs Sony A77 Sensor Comparison

More often than not, it can be tough to imagine the contrast in sensor sizing simply by viewing specs. The photograph underneath might offer you a stronger sense of the sensor sizing in the K-1 II and A77.

As you can plainly see, the 2 cameras provide different megapixels and different sensor sizing. The K-1 II featuring a bigger sensor is going to make achieving shallow depth of field less difficult and the Pentax K-1 II will render more detail having its extra 12MP. Higher resolution will also help you crop shots more aggressively. The younger K-1 II provides a benefit when it comes to sensor technology.

Pentax K-1 II vs Sony A77 sensor size comparison

Pentax K-1 II vs Sony A77 Screen and ViewFinder

Pentax K-1 II vs Sony A77 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Pentax K-1 II Portrait photography details
Sony A77 Portrait photography details
86
manual focus
resolution is amazing (36 megapixels)
large sensor size (Full frame)
offers face detection focus
supports RAW formats
78
manual focus
decent megapixels (24MP)
sensor size is decent (APS-C)
comes with face detect focus
supports RAW files
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Street Comparison

Pentax K-1 II Street photography factors
Sony A77 Street photography factors
70
screen articulates
has image stabilization (Sensor based 5-axis)
large sensor size (Full frame)
supports RAW formats
weather proofing
very good high ISO (819,200)
more heavy than competitors in class (1,010 grams)
75
fully articulated screen
built in image stabilization (Sensor based)
sensor size is decent (APS-C)
supports RAW files
weather sealing
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Sports Comparison

Pentax K-1 II Sports photography info
Sony A77 Sports photography info
77
great max shutter speed (1/8,000 seconds)
has image stabilization (Sensor based 5-axis)
resolution is amazing (36 megapixels)
large sensor size (Full frame)
offers tracking autofocus
weather proofing
supports phase detect auto focus
very slow continuous shooting (4.4 frames per second)
low battery pack (670 per charge)
74
great max shutter speed (1/8,000s)
built in image stabilization (Sensor based)
decent megapixels (24MP)
sensor size is decent (APS-C)
weather sealing
sensor has phase detect auto focus
bad battery pack (470 CIPA)
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Travel Comparison

Pentax K-1 II Travel photography information
Sony A77 Travel photography information
53
weather proofing
resolution is amazing (36MP)
low battery pack (670 shots)
more heavy than competitors in class (1,010 grams)
does not feature selfie friendly display
63
weather sealing
decent megapixels (24 megapixels)
flash built-in
selfie friendly screen
missing Timelapse function
bad battery pack (470 CIPA)
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Landscape Comparison

Pentax K-1 II Landscape photography features
Sony A77 Landscape photography features
82
manual focus
interchangeable lenses (Pentax KAF4 mount)
screen size is good (3.2 inch)
has image stabilization (Sensor based 5-axis)
resolution is amazing (36MP)
large sensor size (Full frame)
no anti aliasing filter
very good high ISO (819,200)
supports RAW formats
weather proofing
has double storage slots
low battery pack (670 per charge)
71
manual focus
change lenses (Sony/Minolta Alpha mount)
screen is a decent size (3 inch)
built in image stabilization (Sensor based)
decent megapixels (24MP)
sensor size is decent (APS-C)
supports RAW files
weather sealing
bad battery pack (470 CIPA)
missing Timelapse function
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Vlogging Comparison

Vlogging with Pentax K-1 II
Vlogging with Sony A77
32
has image stabilization (Sensor based 5-axis)
offers face detection focus
high res video (1920 x 1080 resolution)
comes with external microphone port
does not feature selfie friendly display
more heavy than competitors in class (1,010 grams)
76
selfie friendly screen
built in image stabilization (Sensor based)
comes with face detect focus
video resolution high (1920 x 1080 pixels)
includes microphone port
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Pentax K-1 II vs Sony A77 Specifications

Detailed spec comparison table for Pentax K-1 II and Sony A77
 Pentax K-1 Mark IISony SLT-A77
General Information
Brand Pentax Sony
Model Pentax K-1 Mark II Sony SLT-A77
Type Advanced DSLR Advanced DSLR
Launched 2018-02-22 2011-10-25
Body design Mid-size SLR Mid-size SLR
Sensor Information
Processor PRIME IV Bionz
Sensor type CMOS CMOS
Sensor size Full frame APS-C
Sensor measurements 35.9 x 24mm 23.5 x 15.6mm
Sensor area 861.6mm² 366.6mm²
Sensor resolution 36MP 24MP
Anti aliasing filter
Aspect ratio 3:2 3:2 and 16:9
Max resolution 7360 x 4912 6000 x 4000
Max native ISO 819200 16000
Max enhanced ISO - 25600
Min native ISO 100 50
RAW data
Autofocusing
Manual focus
Touch focus
AF continuous
Single AF
Tracking AF
Selective AF
Center weighted AF
Multi area AF
AF live view
Face detection AF
Contract detection AF
Phase detection AF
Number of focus points 33 19
Cross focus points 25 11
Lens
Lens mount Pentax KAF4 Sony/Minolta Alpha
Available lenses 151 143
Crop factor 1 1.5
Screen
Screen type Fully Articulated Fully Articulated
Screen sizing 3.2 inches 3 inches
Screen resolution 1,037k dot 921k dot
Selfie friendly
Liveview
Touch display
Viewfinder Information
Viewfinder Optical (pentaprism) Electronic
Viewfinder resolution - 2,359k dot
Viewfinder coverage 100 percent 100 percent
Viewfinder magnification 0.7x 0.73x
Features
Min shutter speed 30 seconds 30 seconds
Max shutter speed 1/8000 seconds 1/8000 seconds
Continuous shutter speed 4.4 frames per sec 12.0 frames per sec
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes Yes
Change WB
Image stabilization
Inbuilt flash
Flash range no built-in flash 12.00 m
Flash modes Auto Flash Discharge, Auto Flash + Red-eye Reduction, Flash On, Flash On + Red-eye Reduction, Slow-speed Sync, Slow-speed Sync + Red-eye, P-TTL, Trailing Curtain Sync, Contrast-control-sync, High-speed sync, Wireless sync Auto, On, Off, Red-Eye, Slow Sync, High Speed Sync, Rear Curtain, Fill-in, Wireless
Hot shoe
Auto exposure bracketing
WB bracketing
Max flash sync 1/200 seconds 1/250 seconds
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Video resolutions 1920 x 1080 (60i, 50i, 30p, 25p, 24p), 1280 x 720 (60p, 50p) 1920 x 1080 (60, 24 fps), 1440 x 1080 (30fps), 640 x 424 (29.97 fps)
Max video resolution 1920x1080 1920x1080
Video format MPEG-4, H.264 MPEG-4, AVCHD, H.264
Microphone jack
Headphone jack
Connectivity
Wireless Auto Flash Discharge, Auto Flash + Red-eye Reduction, Flash On, Flash On + Red-eye Reduction, Slow-speed Sync, Slow-speed Sync + Red-eye, P-TTL, Trailing Curtain Sync, Contrast-control-sync, High-speed sync, Wireless sync Eye-Fi Connected
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS Built-in BuiltIn
Physical
Environment seal
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 1010g (2.23 lb) 732g (1.61 lb)
Physical dimensions 137 x 110 x 86mm (5.4" x 4.3" x 3.4") 143 x 104 x 81mm (5.6" x 4.1" x 3.2")
DXO scores
DXO Overall score not tested 78
DXO Color Depth score not tested 24.0
DXO Dynamic range score not tested 13.2
DXO Low light score not tested 801
Other
Battery life 670 photos 470 photos
Battery form Battery Pack Battery Pack
Battery model D-LI90 NP-FM500H
Self timer Yes (2 or 12 sec, custom) Yes (2 or 10 sec)
Time lapse shooting
Type of storage Dual SD/SDHC/SDXC (UHS-I) SD/SDHC/SDXC/Memory Stick Pro Duo/ Pro-HG Duo
Storage slots Dual 1
Launch price $1,737 $900