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Olympus E-M10 III vs Pentax K100D

Portability
80
Imaging
55
Features
75
Overall
63
Olympus OM-D E-M10 Mark III front
 
Pentax K100D front
Portability
64
Imaging
45
Features
36
Overall
41

Olympus E-M10 III vs Pentax K100D Key Specs

Olympus E-M10 III
(Full Review)
  • 16MP - Four Thirds Sensor
  • 3" Tilting Screen
  • ISO 200 - 25600
  • Sensor based 5-axis Image Stabilization
  • 3840 x 2160 video
  • Micro Four Thirds Mount
  • 410g - 122 x 84 x 50mm
  • Introduced August 2017
  • Older Model is Olympus E-M10 II
  • Newer Model is Olympus E-M10 IV
Pentax K100D
(Full Review)
  • 6MP - APS-C Sensor
  • 2.5" Fixed Screen
  • ISO 200 - 3200
  • Sensor based Image Stabilization
  • No Video
  • Pentax KAF Mount
  • 660g - 129 x 93 x 70mm
  • Announced December 2006
  • Updated by Pentax K100D S
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Olympus E-M10 III vs Pentax K100D Overview

In this article, we will be analyzing the Olympus E-M10 III and Pentax K100D, former being a Entry-Level Mirrorless while the latter is a Entry-Level DSLR by brands Olympus and Pentax. There exists a considerable gap among the resolutions of the E-M10 III (16MP) and K100D (6MP) and the E-M10 III (Four Thirds) and K100D (APS-C) possess totally different sensor dimensions.

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The E-M10 III was revealed 10 years later than the K100D and that is a fairly large difference as far as camera technology is concerned. Both of the cameras offer different body type with the Olympus E-M10 III being a SLR-style mirrorless camera and the Pentax K100D being a Compact SLR camera.

Before we go in to a more detailed comparison, below is a concise highlight of how the E-M10 III scores vs the K100D in terms of portability, imaging, features and an overall rating.

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Reasons to pick Olympus E-M10 III over the Pentax K100D

 E-M10 III K100D 
AnnouncedAugust 2017December 2006Fresher by 131 months
Screen typeTiltingFixed Tilting screen
Screen sizing3"2.5"Bigger screen (+0.5")
Screen resolution1040k210kClearer screen (+830k dot)
Touch friendly screen Quickly navigate

Reasons to pick Pentax K100D over the Olympus E-M10 III

 K100D E-M10 III 

Common features in the Olympus E-M10 III and Pentax K100D

 E-M10 III K100D 
Manually focus More accurate focus
Selfie screen Lack of selfie screen

Olympus E-M10 III vs Pentax K100D Physical Comparison

If you're aiming to carry your camera frequently, you need to factor in its weight and measurements. The Olympus E-M10 III comes with physical measurements of 122mm x 84mm x 50mm (4.8" x 3.3" x 2.0") and a weight of 410 grams (0.90 lbs) whilst the Pentax K100D has proportions of 129mm x 93mm x 70mm (5.1" x 3.7" x 2.8") along with a weight of 660 grams (1.46 lbs).

Look at the Olympus E-M10 III and Pentax K100D in our newest Camera plus Lens Size Comparison Tool. Camera Size Comparison with Lenses

Keep in mind, the weight of an ILC will differ depending on the lens you are utilising during that time. Here is the front view proportions comparison of the E-M10 III versus the K100D.

Olympus E-M10 III vs Pentax K100D size comparison

Taking into consideration dimensions and weight, the portability score of the E-M10 III and K100D is 80 and 64 respectively.

Olympus E-M10 III vs Pentax K100D top view buttons comparison

Olympus E-M10 III vs Pentax K100D Sensor Comparison

Quite often, it can be tough to visualise the contrast in sensor sizing just by checking out a spec sheet. The graphic here should offer you a clearer sense of the sensor sizing in the E-M10 III and K100D.

As you can see, both of those cameras offer different resolutions and different sensor sizing. The E-M10 III having a smaller sensor will make shooting shallow DOF more difficult and the Olympus E-M10 III will provide extra detail because of its extra 10 Megapixels. Higher resolution will also help you crop shots a little more aggressively. The fresher E-M10 III will have an edge when it comes to sensor technology.

Olympus E-M10 III vs Pentax K100D sensor size comparison

Olympus E-M10 III vs Pentax K100D Screen and ViewFinder

Olympus E-M10 III vs Pentax K100D Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Olympus E-M10 III Portrait photography factors
Pentax K100D Portrait photography factors
73
focusing manually
good megapixels (16MP)
nice sensor size (Four Thirds)
offers face detect focusing
saves RAW files
51
you can focus manually
good sensor size (APS-C)
exports RAW formats
does not have liveview
sensor resolution low (6 megapixels)
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Street Comparison

Olympus E-M10 III Street photography factors
Pentax K100D Street photography factors
77
screen tilts up and down
image stabilization (Sensor based 5-axis)
nice sensor size (Four Thirds)
saves RAW files
has touch to focus
very good high ISO (25,600)
more heavy than competition in class (410 grams)
58
built in image stabilization (Sensor based)
good sensor size (APS-C)
exports RAW formats
screen does not articulate
heavier than competition in class (660g)
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Sports Comparison

Olympus E-M10 III as a Sports photography camera
Pentax K100D as a Sports photography camera
69
quiet mode (1/16,000s)
image stabilization (Sensor based 5-axis)
good megapixels (16MP)
nice sensor size (Four Thirds)
offers tracking focus
no phase detect AF
47
built in image stabilization (Sensor based)
good sensor size (APS-C)
sensor has phase detect auto focus
does not have liveview
slow frames per second (3.0 fps)
sensor resolution low (6 megapixels)
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Travel Comparison

Olympus E-M10 III Travel photography info
Pentax K100D Travel photography info
67
has touch to focus
good megapixels (16 megapixels)
built-in flash
more heavy than competition in class (410 grams)
display isn't selfie friendly
42
has built in flash
missing Time Lapse recording
heavier than competition in class (660g)
sensor resolution low (6 megapixels)
doesn't have a selfie friendly screen
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Landscape Comparison

Olympus E-M10 III as a Landscape photography camera
Pentax K100D as a Landscape photography camera
80
focusing manually
interchangeable lenses (Micro Four Thirds mount)
screen size is good (3 inches)
image stabilization (Sensor based 5-axis)
good megapixels (16 megapixels)
nice sensor size (Four Thirds)
very good high ISO (25,600)
saves RAW files
52
you can focus manually
swap lenses (Pentax KAF mount)
built in image stabilization (Sensor based)
good sensor size (APS-C)
exports RAW formats
tiny screen (2.5 inch)
does not have liveview
sensor resolution low (6 megapixels)
missing Time Lapse recording
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Vlogging Comparison

Olympus E-M10 III Vlogging features
Pentax K100D Vlogging features
32
touch screen
image stabilization (Sensor based 5-axis)
offers face detect focusing
high video quality (3840 x 2160 pxls)
display isn't selfie friendly
lack of microphone port
more heavy than competition in class (410g)
9
can't shoot video
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Olympus E-M10 III vs Pentax K100D Specifications

Detailed spec comparison table for Olympus E-M10 III and Pentax K100D
 Olympus OM-D E-M10 Mark IIIPentax K100D
General Information
Manufacturer Olympus Pentax
Model type Olympus OM-D E-M10 Mark III Pentax K100D
Class Entry-Level Mirrorless Entry-Level DSLR
Introduced 2017-08-31 2006-12-03
Physical type SLR-style mirrorless Compact SLR
Sensor Information
Chip TruePic VIII -
Sensor type CMOS CCD
Sensor size Four Thirds APS-C
Sensor dimensions 17.4 x 13mm 23.5 x 15.7mm
Sensor surface area 226.2mm² 369.0mm²
Sensor resolution 16MP 6MP
Anti alias filter
Aspect ratio 4:3 3:2
Full resolution 4608 x 3456 3008 x 2008
Max native ISO 25600 3200
Minimum native ISO 200 200
RAW images
Minimum boosted ISO 100 -
Autofocusing
Focus manually
Autofocus touch
Autofocus continuous
Single autofocus
Autofocus tracking
Selective autofocus
Center weighted autofocus
Multi area autofocus
Autofocus live view
Face detection focus
Contract detection focus
Phase detection focus
Total focus points 121 11
Lens
Lens support Micro Four Thirds Pentax KAF
Amount of lenses 107 151
Crop factor 2.1 1.5
Screen
Type of screen Tilting Fixed Type
Screen size 3" 2.5"
Resolution of screen 1,040k dots 210k dots
Selfie friendly
Liveview
Touch function
Viewfinder Information
Viewfinder type Electronic Optical (pentamirror)
Viewfinder resolution 2,360k dots -
Viewfinder coverage 100 percent 96 percent
Viewfinder magnification 0.62x 0.57x
Features
Lowest shutter speed 60s 30s
Highest shutter speed 1/4000s 1/4000s
Highest silent shutter speed 1/16000s -
Continuous shooting rate 8.6fps 3.0fps
Shutter priority
Aperture priority
Expose Manually
Exposure compensation Yes Yes
Change white balance
Image stabilization
Built-in flash
Flash distance 5.80 m (at ISO 100) -
Flash options Auto, redeye, slow sync, 2nd-curtain slow sync, redeye slow sync, fill-in, manual, off Auto, On, Off, Red-eye reduction
Hot shoe
AE bracketing
WB bracketing
Highest flash synchronize 1/250s 1/180s
Exposure
Multisegment
Average
Spot
Partial
AF area
Center weighted
Video features
Video resolutions 3840 x 2160 @ 30p / 102 Mbps, MOV, H.264, Linear PCM -
Max video resolution 3840x2160 None
Video format MPEG-4, H.264 -
Mic port
Headphone port
Connectivity
Wireless Built-In None
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS None None
Physical
Environment sealing
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 410g (0.90 lbs) 660g (1.46 lbs)
Dimensions 122 x 84 x 50mm (4.8" x 3.3" x 2.0") 129 x 93 x 70mm (5.1" x 3.7" x 2.8")
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 330 shots -
Type of battery Battery Pack -
Battery ID BLS-50 4 x AA
Self timer Yes (2 or 12 secs, custom) Yes (2 or 12 sec)
Time lapse recording
Type of storage SD/SDHC/SDXC (UHS-I/II supported) SD/MMC card
Card slots 1 1
Pricing at launch $650 $0