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Olympus E-M1X vs Pentax K-S2

Portability
54
Imaging
61
Features
93
Overall
73
Olympus OM-D E-M1X front
 
Pentax K-S2 front
Portability
64
Imaging
64
Features
82
Overall
71

Olympus E-M1X vs Pentax K-S2 Key Specs

Olympus E-M1X
(Full Review)
  • 20MP - Four Thirds Sensor
  • 3" Fully Articulated Screen
  • ISO 200 - 25600
  • Sensor based 5-axis Image Stabilization
  • 1/8000s Max Shutter
  • 4096 x 2160 video
  • Micro Four Thirds Mount
  • 997g - 144 x 147 x 75mm
  • Announced January 2019
  • Superseded the Olympus E-M1 II
Pentax K-S2
(Full Review)
  • 20MP - APS-C Sensor
  • 3" Fully Articulated Screen
  • ISO 100 - 51200
  • Sensor based Image Stabilization
  • No Anti-Alias Filter
  • 1/6000s Maximum Shutter
  • 1920 x 1080 video
  • Pentax KAF2 Mount
  • 678g - 123 x 91 x 73mm
  • Released February 2015
  • Replaced the Pentax K-S1
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Olympus E-M1X vs Pentax K-S2 Overview

Following is a in depth review of the Olympus E-M1X and Pentax K-S2, former is a Pro Mirrorless while the latter is a Entry-Level DSLR by manufacturers Olympus and Pentax. The image resolution of the E-M1X (20MP) and the K-S2 (20MP) is pretty similar but the E-M1X (Four Thirds) and K-S2 (APS-C) enjoy totally different sensor sizing.

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The E-M1X was introduced 4 years after the K-S2 which is quite a significant difference as far as technology is concerned. Both cameras come with different body type with the Olympus E-M1X being a SLR-style mirrorless camera and the Pentax K-S2 being a Compact SLR camera.

Before going through a comprehensive comparison, below is a concise highlight of how the E-M1X matches up vs the K-S2 in relation to portability, imaging, features and an overall score.

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Reasons to pick Olympus E-M1X over the Pentax K-S2

 E-M1X K-S2 
ReleasedJanuary 2019February 2015More modern by 49 months
Screen resolution1037k921kClearer screen (+116k dot)
Touch friendly screen Quickly navigate

Reasons to pick Pentax K-S2 over the Olympus E-M1X

 K-S2 E-M1X 

Common features in the Olympus E-M1X and Pentax K-S2

 E-M1X K-S2 
Manual focus Dial precise focus
Screen typeFully ArticulatedFully ArticulatedFully Articulated screen
Screen dimension3"3"Identical screen measurement
Selfie screen Both are selfie friendly

Olympus E-M1X vs Pentax K-S2 Physical Comparison

If you are planning to carry around your camera regularly, you are going to need to think about its weight and volume. The Olympus E-M1X has got outside measurements of 144mm x 147mm x 75mm (5.7" x 5.8" x 3.0") having a weight of 997 grams (2.20 lbs) whilst the Pentax K-S2 has sizing of 123mm x 91mm x 73mm (4.8" x 3.6" x 2.9") with a weight of 678 grams (1.49 lbs).

Look at the Olympus E-M1X and Pentax K-S2 in our brand new Camera plus Lens Size Comparison Tool. Camera Size Comparison with Lenses

Remember that, the weight of an ILC will differ dependant on the lens you choose at that time. Following is the front view dimensions comparison of the E-M1X and the K-S2.

Olympus E-M1X vs Pentax K-S2 size comparison

Looking at dimensions and weight, the portability grade of the E-M1X and K-S2 is 54 and 64 respectively.

Olympus E-M1X vs Pentax K-S2 top view buttons comparison

Olympus E-M1X vs Pentax K-S2 Sensor Comparison

More often than not, it is very hard to visualise the contrast between sensor sizes only by reviewing a spec sheet. The pic underneath will provide you a stronger sense of the sensor sizing in the E-M1X and K-S2.

As you can see, both of the cameras posses the exact same megapixels albeit not the same sensor sizes. The E-M1X includes the tinier sensor which will make obtaining shallow depth of field trickier. The fresher E-M1X will have an advantage in sensor technology.

Olympus E-M1X vs Pentax K-S2 sensor size comparison

Olympus E-M1X vs Pentax K-S2 Screen and ViewFinder

Olympus E-M1X vs Pentax K-S2 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Olympus E-M1X Portrait photography advice
Pentax K-S2 Portrait photography advice
76
you can focus manually
decent MP (20MP)
good sensor size (Four Thirds)
offers face detection autofocus
saves RAW files
78
you can focus manually
sensor resolution is decent (20MP)
good sensor size (APS-C)
includes face detection focusing
exports RAW formats
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Street Comparison

Street photography with Olympus E-M1X
Street photography with Pentax K-S2
67
screen articulates fully
image stabilization (Sensor based 5-axis)
good sensor size (Four Thirds)
saves RAW files
comes with touch to focus
environment proofing
above average ISO range (25,600)
more heavy than others in class (997g)
72
screen can move to multiple angles
has image stabilization (Sensor based)
good sensor size (APS-C)
exports RAW formats
weather proofing
above average ISO range (51,200)
heavier than average in class (678g)
Photography Glossary

Sports Comparison

Olympus E-M1X as a Sports photography camera
Pentax K-S2 as a Sports photography camera
80
great max shutter speed (1/8,000s)
silent shutter (1/32,000s)
fast shooting (60.0 frames/s)
image stabilization (Sensor based 5-axis)
decent MP (20MP)
good sensor size (Four Thirds)
offers tracking autofocus
environment proofing
better than average battery (870 shots)
comes with phase detect autofocus
70
max shutter speed is good (1/6,000s)
has image stabilization (Sensor based)
sensor resolution is decent (20 megapixels)
good sensor size (APS-C)
includes tracking autofocus
weather proofing
supports phase detect AF
low frames per second (5.4 frames/s)
bad battery power (410 CIPA)
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Travel Comparison

Olympus E-M1X Travel photography highlights
Pentax K-S2 Travel photography highlights
68
better than average battery (870 per charge)
environment proofing
has bluetooth
comes with touch to focus
decent MP (20 megapixels)
display is selfie friendly
more heavy than others in class (997 grams)
65
weather proofing
sensor resolution is decent (20MP)
has built in flash
display is selfie friendly
bad battery power (410 per charge)
heavier than average in class (678g)
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Landscape Comparison

Olympus E-M1X as a Landscape photography camera
Pentax K-S2 as a Landscape photography camera
79
you can focus manually
change lenses (Micro Four Thirds mount)
screen size is good (3")
image stabilization (Sensor based 5-axis)
decent MP (20 megapixels)
good sensor size (Four Thirds)
above average ISO range (25,600)
saves RAW files
environment proofing
better than average battery (870 per charge)
two card slots
77
you can focus manually
change lenses (Pentax KAF2 mount)
decent sized screen (3 inch)
has image stabilization (Sensor based)
sensor resolution is decent (20MP)
good sensor size (APS-C)
doesnt have low pass filter
above average ISO range (51,200)
exports RAW formats
weather proofing
bad battery power (410 shots)
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Vlogging Comparison

Olympus E-M1X Vlogging info
Pentax K-S2 Vlogging info
68
display is selfie friendly
touchscreen capability
image stabilization (Sensor based 5-axis)
offers face detection autofocus
video resolution high (4096 x 2160 resolution)
does have external microphone socket
more heavy than others in class (997g)
71
display is selfie friendly
has image stabilization (Sensor based)
includes face detection focusing
video resolution high (1920 x 1080 pixels)
comes with external mic socket
heavier than average in class (678g)
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Olympus E-M1X vs Pentax K-S2 Specifications

Detailed spec comparison table for Olympus E-M1X and Pentax K-S2
 Olympus OM-D E-M1XPentax K-S2
General Information
Manufacturer Olympus Pentax
Model type Olympus OM-D E-M1X Pentax K-S2
Class Pro Mirrorless Entry-Level DSLR
Announced 2019-01-24 2015-02-10
Physical type SLR-style mirrorless Compact SLR
Sensor Information
Powered by Dual TruePic VIII PRIME MII
Sensor type CMOS CMOS
Sensor size Four Thirds APS-C
Sensor dimensions 17.4 x 13mm 23.5 x 15.6mm
Sensor area 226.2mm² 366.6mm²
Sensor resolution 20 megapixel 20 megapixel
Anti alias filter
Aspect ratio 4:3 3:2
Highest resolution 5184 x 3888 5472 x 3648
Highest native ISO 25600 51200
Min native ISO 200 100
RAW support
Min boosted ISO 64 -
Autofocusing
Focus manually
Touch to focus
AF continuous
AF single
Tracking AF
Selective AF
AF center weighted
Multi area AF
AF live view
Face detection AF
Contract detection AF
Phase detection AF
Total focus points 121 11
Lens
Lens mount type Micro Four Thirds Pentax KAF2
Number of lenses 107 151
Crop factor 2.1 1.5
Screen
Screen type Fully Articulated Fully Articulated
Screen sizing 3 inch 3 inch
Resolution of screen 1,037 thousand dots 921 thousand dots
Selfie friendly
Liveview
Touch operation
Viewfinder Information
Viewfinder type Electronic Optical (pentaprism)
Viewfinder resolution 2,360 thousand dots -
Viewfinder coverage 100% 100%
Viewfinder magnification 0.74x 0.64x
Features
Lowest shutter speed 60 seconds 30 seconds
Highest shutter speed 1/8000 seconds 1/6000 seconds
Highest silent shutter speed 1/32000 seconds -
Continuous shooting rate 60.0 frames/s 5.4 frames/s
Shutter priority
Aperture priority
Expose Manually
Exposure compensation Yes Yes
Set WB
Image stabilization
Integrated flash
Flash distance no built-in flash 12.00 m (at ISO 100)
Flash settings Redeye, Fill-in, Flash Off, Red-eye Slow sync (1st curtain), Slow sync.(1st curtain), Slow sync (2nd curtain), manual Auto, auto w/redeye reduction, flash on, flash on + redeye reduction, slow sync, trailing curtain sync, manual flash
External flash
Auto exposure bracketing
WB bracketing
Exposure
Multisegment
Average
Spot
Partial
AF area
Center weighted
Video features
Video resolutions 4096 x 2160 @ 24p / 237 Mbps, MOV, H.264, Linear PCM 1920 x 1080 (30p, 25p, 24p), 1280 x 720 (60p, 50p)
Highest video resolution 4096x2160 1920x1080
Video file format MPEG-4, H.264 MPEG-4, H.264
Mic port
Headphone port
Connectivity
Wireless Built-In Built-In
Bluetooth
NFC
HDMI
USB Yes (USB-PD allows charging by laptop or external power bank) USB 2.0 (480 Mbit/sec)
GPS Built-in Optional
Physical
Environment sealing
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 997 grams (2.20 lbs) 678 grams (1.49 lbs)
Dimensions 144 x 147 x 75mm (5.7" x 5.8" x 3.0") 123 x 91 x 73mm (4.8" x 3.6" x 2.9")
DXO scores
DXO All around rating not tested not tested
DXO Color Depth rating not tested not tested
DXO Dynamic range rating not tested not tested
DXO Low light rating not tested not tested
Other
Battery life 870 pictures 410 pictures
Battery type Built-in Battery Pack
Battery ID - D-LI109
Self timer Yes (2 or 12 secs, custom) Yes (2 or 12 secs)
Time lapse feature
Type of storage - SD/SDHC/SDXC
Card slots Dual Single
Pricing at launch $2,999 $581