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Olympus E-M1 III vs Pentax K-70

Portability
67
Imaging
62
Features
96
Overall
75
Olympus OM-D E-M1 Mark III front
 
Pentax K-70 front
Portability
62
Imaging
67
Features
81
Overall
72

Olympus E-M1 III vs Pentax K-70 Key Specs

Olympus E-M1 III
(Full Review)
  • 20MP - Four Thirds Sensor
  • 3" Fully Articulated Screen
  • ISO 200 - 25600
  • Sensor based 5-axis Image Stabilization
  • No Anti-Alias Filter
  • 1/8000s Maximum Shutter
  • 4096 x 2160 video
  • Micro Four Thirds Mount
  • 580g - 134 x 91 x 69mm
  • Introduced February 2020
  • Old Model is Olympus E-M1 II
Pentax K-70
(Full Review)
  • 24MP - APS-C Sensor
  • 3" Fully Articulated Screen
  • ISO 100 - 102400
  • Sensor based Image Stabilization
  • No Anti-Alias Filter
  • 1/6000s Maximum Shutter
  • 1920 x 1080 video
  • Pentax KAF2 Mount
  • 688g - 126 x 93 x 74mm
  • Launched June 2016
  • Replacement is Pentax KF
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Olympus E-M1 III vs Pentax K-70 Overview

Lets take a closer look at the Olympus E-M1 III and Pentax K-70, former is a Pro Mirrorless while the latter is a Entry-Level DSLR by manufacturers Olympus and Pentax. The resolution of the E-M1 III (20MP) and the K-70 (24MP) is pretty similar but the E-M1 III (Four Thirds) and K-70 (APS-C) feature totally different sensor size.

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The E-M1 III was launched 3 years after the K-70 which is quite a serious difference as far as tech is concerned. The two cameras come with different body type with the Olympus E-M1 III being a SLR-style mirrorless camera and the Pentax K-70 being a Compact SLR camera.

Before delving through a in-depth comparison, below is a short view of how the E-M1 III scores vs the K-70 with regard to portability, imaging, features and an overall mark.

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Reasons to pick Olympus E-M1 III over the Pentax K-70

 E-M1 III K-70 
LaunchedFebruary 2020June 2016Newer by 45 months
Screen resolution1037k921kClearer screen (+116k dot)
Touch screen Quickly navigate

Reasons to pick Pentax K-70 over the Olympus E-M1 III

 K-70 E-M1 III 

Common features in the Olympus E-M1 III and Pentax K-70

 E-M1 III K-70 
Manual focus More precise focusing
Screen typeFully ArticulatedFully ArticulatedFully Articulated screen
Screen dimension3"3"Identical screen size
Selfie screen Both good for selfies

Olympus E-M1 III vs Pentax K-70 Physical Comparison

In case you're looking to travel with your camera often, you'll need to factor its weight and proportions. The Olympus E-M1 III features physical dimensions of 134mm x 91mm x 69mm (5.3" x 3.6" x 2.7") having a weight of 580 grams (1.28 lbs) whilst the Pentax K-70 has measurements of 126mm x 93mm x 74mm (5.0" x 3.7" x 2.9") accompanied by a weight of 688 grams (1.52 lbs).

See the Olympus E-M1 III and Pentax K-70 in our newest Camera & Lens Size Comparison Tool. Camera Size Comparison with Lenses

Remember, the weight of an ILC will differ based on the lens you are employing at the time. Following is the front view over all size comparison of the E-M1 III vs the K-70.

Olympus E-M1 III vs Pentax K-70 size comparison

Taking into account size and weight, the portability grade of the E-M1 III and K-70 is 67 and 62 respectively.

Olympus E-M1 III vs Pentax K-70 top view buttons comparison

Olympus E-M1 III vs Pentax K-70 Sensor Comparison

Usually, it is difficult to envision the contrast between sensor dimensions only by reading technical specs. The image underneath will provide you a greater sense of the sensor sizes in the E-M1 III and K-70.

As you have seen, both of these cameras have got different megapixel count and different sensor dimensions. The E-M1 III because of its tinier sensor will make shooting shallower depth of field more difficult and the Pentax K-70 will offer extra detail utilizing its extra 4 Megapixels. Higher resolution will also make it easier to crop pictures much more aggressively. The more recent E-M1 III will have an advantage with regard to sensor technology.

Olympus E-M1 III vs Pentax K-70 sensor size comparison

Olympus E-M1 III vs Pentax K-70 Screen and ViewFinder

Olympus E-M1 III vs Pentax K-70 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Olympus E-M1 III Portrait photography details
Pentax K-70 Portrait photography details
77
has manual focus
good MP (20 megapixels)
sensor size is nice (Four Thirds)
offers face detection focus
delivers RAW formats
80
focusing manually
decent MP (24MP)
sensor size is decent (APS-C)
features face detect autofocus
exports RAW files
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Street Comparison

Olympus E-M1 III Street photography information
Pentax K-70 Street photography information
78
screen can move to multiple angles
image stabilization (Sensor based 5-axis)
sensor size is nice (Four Thirds)
delivers RAW formats
includes touch to focus
weather sealing
great ISO range (25,600)
71
screen can move to multiple angles
has image stabilization (Sensor based)
sensor size is decent (APS-C)
exports RAW files
weather sealing
very good ISO range (102,400)
more heavy than average (688g)
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Sports Comparison

Olympus E-M1 III Sports photography info
Pentax K-70 Sports photography info
81
great max shutter speed (1/8,000 seconds)
quiet shutter (1/32,000 seconds)
high fps (60.0 frames/s)
image stabilization (Sensor based 5-axis)
good MP (20 megapixels)
sensor size is nice (Four Thirds)
offers tracking autofocus
weather sealing
has phase detect auto focus
72
maximum shutter speed is high (1/6,000 seconds)
has image stabilization (Sensor based)
decent MP (24 megapixels)
sensor size is decent (APS-C)
features tracking focus
weather sealing
has phase detect autofocus
low fps (6.0 frames/s)
terrible battery power (410 shots)
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Travel Comparison

Travel photography with Olympus E-M1 III
Travel photography with Pentax K-70
79
weather sealing
supports bluetooth
includes touch to focus
good MP (20 megapixels)
screen is selfie friendly
64
weather sealing
decent MP (24MP)
built-in flash
display is selfie friendly
terrible battery power (410 CIPA)
more heavy than average (688g)
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Landscape Comparison

Olympus E-M1 III Landscape photography features
Pentax K-70 Landscape photography features
81
has manual focus
switch lenses (Micro Four Thirds mount)
screen is a good size (3 inches)
image stabilization (Sensor based 5-axis)
good MP (20MP)
sensor size is nice (Four Thirds)
does not have low pass filter
great ISO range (25,600)
delivers RAW formats
weather sealing
2 card slots
78
focusing manually
change lenses (Pentax KAF2 mount)
decent sized screen (3 inch)
has image stabilization (Sensor based)
decent MP (24 megapixels)
sensor size is decent (APS-C)
does not have anti-alias filter
very good ISO range (102,400)
exports RAW files
weather sealing
terrible battery power (410 CIPA)
Photography Glossary

Vlogging Comparison

Olympus E-M1 III as a Vlogging camera
Pentax K-70 as a Vlogging camera
79
screen is selfie friendly
touchscreen enabled
image stabilization (Sensor based 5-axis)
offers face detection focus
great video quality (4096 x 2160 pixels)
has external mic support
71
display is selfie friendly
has image stabilization (Sensor based)
features face detect autofocus
high quality video (1920 x 1080 pxls)
has microphone port
more heavy than average (688g)
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Olympus E-M1 III vs Pentax K-70 Specifications

Detailed spec comparison table for Olympus E-M1 III and Pentax K-70
 Olympus OM-D E-M1 Mark IIIPentax K-70
General Information
Manufacturer Olympus Pentax
Model Olympus OM-D E-M1 Mark III Pentax K-70
Category Pro Mirrorless Entry-Level DSLR
Introduced 2020-02-11 2016-06-08
Body design SLR-style mirrorless Compact SLR
Sensor Information
Processor Chip TruePic IX PRIME MII
Sensor type CMOS CMOS
Sensor size Four Thirds APS-C
Sensor measurements 17.4 x 13mm 23.5 x 15.6mm
Sensor surface area 226.2mm² 366.6mm²
Sensor resolution 20 megapixels 24 megapixels
Anti aliasing filter
Aspect ratio 4:3 3:2
Highest resolution 5184 x 3888 6000 x 4000
Highest native ISO 25600 102400
Minimum native ISO 200 100
RAW photos
Minimum boosted ISO 64 -
Autofocusing
Focus manually
Touch focus
AF continuous
Single AF
Tracking AF
AF selectice
AF center weighted
Multi area AF
Live view AF
Face detection AF
Contract detection AF
Phase detection AF
Number of focus points 121 11
Cross focus points 121 9
Lens
Lens mounting type Micro Four Thirds Pentax KAF2
Total lenses 107 151
Crop factor 2.1 1.5
Screen
Range of screen Fully Articulated Fully Articulated
Screen sizing 3" 3"
Resolution of screen 1,037k dot 921k dot
Selfie friendly
Liveview
Touch capability
Viewfinder Information
Viewfinder Electronic Optical (pentaprism)
Viewfinder resolution 2,360k dot -
Viewfinder coverage 100 percent 100 percent
Viewfinder magnification 0.74x 0.63x
Features
Lowest shutter speed 60s 30s
Highest shutter speed 1/8000s 1/6000s
Highest silent shutter speed 1/32000s -
Continuous shooting speed 60.0 frames/s 6.0 frames/s
Shutter priority
Aperture priority
Manual exposure
Exposure compensation Yes Yes
Custom WB
Image stabilization
Inbuilt flash
Flash range no built-in flash 12.00 m (at ISO 100)
Flash options 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 + redeye reduction, slow sync, trailing curtain sync, manual
Hot shoe
AEB
WB bracketing
Highest flash sync 1/250s -
Exposure
Multisegment metering
Average metering
Spot metering
Partial metering
AF area metering
Center weighted metering
Video features
Supported video resolutions 4096 x 2160 @ 24p / 237 Mbps, MOV, H.264, Linear PCM3840 x 2160 @ 30p / 102 Mbps, MOV, H.264, Linear PCM3840 x 2160 @ 25p / 102 Mbps, MOV, H.264, Linear PCM3840 x 2160 @ 23.98p / 102 Mbps, MOV, H.264, Linear PCM1920 x 1080 @ 60p, MOV, H.264, Linear PCM1920 x 1080 @ 50p, MOV, H.264, Linear PCM1920 x 1080 @ 30p, MOV, H.264, Linear PCM1920 x 1080 @ 25p, MOV, H.264, Linear PCM1920 x 1080 @ 23.98p, MOV, H.264, Linear PCM 1920 x 1080 (60i, 50i, 30p, 25p, 24p), 1280 x 720 (60p, 50p)
Highest video resolution 4096x2160 1920x1080
Video file format MPEG-4, H.264 MPEG-4, H.264
Microphone jack
Headphone jack
Connectivity
Wireless Built-In Built-In
Bluetooth
NFC
HDMI
USB USB 3.1 Gen 1 (5 GBit/sec) USB 2.0 (480 Mbit/sec)
GPS None Optional
Physical
Environment seal
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 580 grams (1.28 lbs) 688 grams (1.52 lbs)
Dimensions 134 x 91 x 69mm (5.3" x 3.6" x 2.7") 126 x 93 x 74mm (5.0" x 3.7" x 2.9")
DXO scores
DXO All around score not tested not tested
DXO Color Depth score not tested not tested
DXO Dynamic range score not tested not tested
DXO Low light score not tested not tested
Other
Battery life 420 shots 410 shots
Battery form Battery Pack Battery Pack
Battery model BLH-1 -
Self timer Yes (2 or 12 secs, custom) Yes (2 or 12 secs, continuous)
Time lapse recording
Storage media Dual SD/SDHC/SDXC slots (UHS-II on first slot) SD/SDHC/SDXC (UHS-I compatible)
Storage slots Two 1
Pricing at launch $1,800 $649