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Olympus E-M10 III vs Pentax K100D S

Portability
80
Imaging
55
Features
75
Overall
63
Olympus OM-D E-M10 Mark III front
 
Pentax K100D Super front
Portability
65
Imaging
45
Features
38
Overall
42

Olympus E-M10 III vs Pentax K100D S Key Specs

Olympus E-M10 III
(Full Review)
  • 16MP - Four Thirds Sensor
  • 3" Tilting Display
  • 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
  • Previous Model is Olympus E-M10 II
  • Updated by Olympus E-M10 IV
Pentax K100D S
(Full Review)
  • 6MP - APS-C Sensor
  • 2.5" Fixed Display
  • ISO 200 - 3200
  • Sensor based Image Stabilization
  • No Video
  • Pentax KAF2 Mount
  • 646g - 129 x 91 x 71mm
  • Introduced June 2007
  • Previous Model is Pentax K100D
  • Renewed by Pentax K200D
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Olympus E-M10 III vs Pentax K100D S Overview

Lets take a more detailed look at the Olympus E-M10 III versus Pentax K100D S, former is a Entry-Level Mirrorless while the other is a Entry-Level DSLR by manufacturers Olympus and Pentax. There is a noticeable difference among the sensor resolutions of the E-M10 III (16MP) and K100D S (6MP) and the E-M10 III (Four Thirds) and K100D S (APS-C) feature totally different sensor sizing.

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The E-M10 III was announced 10 years after the K100D S which is a fairly sizable difference as far as camera tech is concerned. Each of these cameras offer different body type with the Olympus E-M10 III being a SLR-style mirrorless camera and the Pentax K100D S being a Compact SLR camera.

Before going through a more detailed comparison, below is a quick synopsis of how the E-M10 III scores versus the K100D S with regard to portability, imaging, features and an overall mark.

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

 E-M10 III K100D S 
IntroducedAugust 2017June 2007Newer by 124 months
Display typeTiltingFixed Tilting display
Display sizing3"2.5"Larger display (+0.5")
Display resolution1040k210kClearer display (+830k dot)
Touch display Easily navigate

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

 K100D S E-M10 III 

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

 E-M10 III K100D S 
Focus manually Very precise focus
Selfie screen Neither features selfie screen

Olympus E-M10 III vs Pentax K100D S Physical Comparison

For anyone who is looking to travel with your camera frequently, you will want to take into account its weight and dimensions. The Olympus E-M10 III enjoys outside measurements of 122mm x 84mm x 50mm (4.8" x 3.3" x 2.0") and a weight of 410 grams (0.90 lbs) while the Pentax K100D S has dimensions of 129mm x 91mm x 71mm (5.1" x 3.6" x 2.8") with a weight of 646 grams (1.42 lbs).

Take a look at the Olympus E-M10 III versus Pentax K100D S in our brand new Camera plus Lens Size Comparison Tool. Camera Size Comparison with Lenses

Remember, the weight of an ILC will differ dependant on the lens you have attached at the time. The following is the front view scale comparison of the E-M10 III vs the K100D S.

Olympus E-M10 III vs Pentax K100D S size comparison

Looking at size and weight, the portability grade of the E-M10 III and K100D S is 80 and 65 respectively.

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

Olympus E-M10 III vs Pentax K100D S Sensor Comparison

Oftentimes, it is hard to visualise the gap in sensor dimensions only by going through technical specs. The picture underneath may provide you a greater sense of the sensor sizing in the E-M10 III and K100D S.

As you have seen, the 2 cameras enjoy different megapixel count and different sensor dimensions. The E-M10 III having a smaller sensor will make getting bokeh tougher and the Olympus E-M10 III will provide extra detail with its extra 10 Megapixels. Greater resolution will also allow you to crop images far more aggressively. The younger E-M10 III is going to have a benefit in sensor innovation.

Olympus E-M10 III vs Pentax K100D S sensor size comparison

Olympus E-M10 III vs Pentax K100D S Screen and ViewFinder

Olympus E-M10 III vs Pentax K100D S Screen and Viewfinder comparison
Photography Glossary

Photography Type Scores

Portrait Comparison

Olympus E-M10 III as a Portrait photography camera
Pentax K100D S as a Portrait photography camera
73
manual focus
decent MP (16MP)
decent sensor size (Four Thirds)
includes face detect autofocus
supports RAW formats
51
you can focus manually
sensor size is decent (APS-C)
exports RAW files
no liveview
megapixel count low (6 megapixels)
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Street Comparison

Olympus E-M10 III Street photography details
Pentax K100D S Street photography details
77
screen tilts up and down
built in image stabilization (Sensor based 5-axis)
decent sensor size (Four Thirds)
supports RAW formats
offers touch to focus
good ISO range (25,600)
heavier than competition in class (410g)
64
image stabilization (Sensor based)
sensor size is decent (APS-C)
exports RAW files
no articulating screen
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Sports Comparison

Olympus E-M10 III as a Sports photography camera
Pentax K100D S as a Sports photography camera
69
silent shooting (1/16,000 seconds)
built in image stabilization (Sensor based 5-axis)
decent MP (16MP)
decent sensor size (Four Thirds)
includes tracking focus
has no phase detect autofocus
47
image stabilization (Sensor based)
sensor size is decent (APS-C)
has phase detect auto focus
no liveview
max fps very slow (3.0 fps)
megapixel count low (6 megapixels)
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Travel Comparison

Olympus E-M10 III Travel photography highlights
Pentax K100D S Travel photography highlights
67
offers touch to focus
decent MP (16 megapixels)
flash built-in
heavier than competition in class (410g)
does not feature selfie friendly screen
45
built-in flash
missing Timelapse recording
megapixel count low (6MP)
doesn't have a selfie friendly display
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Landscape Comparison

Olympus E-M10 III as a Landscape photography camera
Pentax K100D S as a Landscape photography camera
80
manual focus
swap lenses (Micro Four Thirds mount)
screen size is decent (3 inches)
built in image stabilization (Sensor based 5-axis)
decent MP (16 megapixels)
decent sensor size (Four Thirds)
good ISO range (25,600)
supports RAW formats
52
you can focus manually
interchangeable lenses (Pentax KAF2 mount)
image stabilization (Sensor based)
sensor size is decent (APS-C)
exports RAW files
tiny screen (2.5 inches)
no liveview
megapixel count low (6MP)
missing Timelapse recording
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Vlogging Comparison

Olympus E-M10 III Vlogging highlights
Pentax K100D S Vlogging highlights
32
touchscreen capability
built in image stabilization (Sensor based 5-axis)
includes face detect autofocus
high res video (3840 x 2160 resolution)
does not feature selfie friendly screen
lack of mic jack
heavier than competition in class (410 grams)
9
no video shooting
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Olympus E-M10 III vs Pentax K100D S Specifications

Detailed spec comparison table for Olympus E-M10 III and Pentax K100D S
 Olympus OM-D E-M10 Mark IIIPentax K100D Super
General Information
Brand Name Olympus Pentax
Model Olympus OM-D E-M10 Mark III Pentax K100D Super
Category Entry-Level Mirrorless Entry-Level DSLR
Introduced 2017-08-31 2007-06-28
Physical type SLR-style mirrorless Compact SLR
Sensor Information
Processor TruePic VIII -
Sensor type CMOS CCD
Sensor size Four Thirds APS-C
Sensor measurements 17.4 x 13mm 23.5 x 15.7mm
Sensor surface area 226.2mm² 369.0mm²
Sensor resolution 16 megapixels 6 megapixels
Anti aliasing filter
Aspect ratio 4:3 3:2
Highest resolution 4608 x 3456 3008 x 2008
Highest native ISO 25600 3200
Minimum native ISO 200 200
RAW photos
Minimum boosted ISO 100 -
Autofocusing
Focus manually
Touch focus
Continuous autofocus
Single autofocus
Autofocus tracking
Selective autofocus
Autofocus center weighted
Autofocus multi area
Autofocus live view
Face detect focus
Contract detect focus
Phase detect focus
Number of focus points 121 11
Lens
Lens mount Micro Four Thirds Pentax KAF2
Available lenses 107 151
Crop factor 2.1 1.5
Screen
Display type Tilting Fixed Type
Display diagonal 3" 2.5"
Resolution of display 1,040 thousand dots 210 thousand dots
Selfie friendly
Liveview
Touch screen
Viewfinder Information
Viewfinder Electronic Optical (pentamirror)
Viewfinder resolution 2,360 thousand dots -
Viewfinder coverage 100% 96%
Viewfinder magnification 0.62x 0.57x
Features
Lowest shutter speed 60s 30s
Highest shutter speed 1/4000s 1/4000s
Highest quiet shutter speed 1/16000s -
Continuous shooting rate 8.6 frames/s 3.0 frames/s
Shutter priority
Aperture priority
Expose Manually
Exposure compensation Yes Yes
Set white balance
Image stabilization
Inbuilt flash
Flash range 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
Auto exposure bracketing
WB bracketing
Highest flash synchronize 1/250s 1/180s
Exposure
Multisegment metering
Average metering
Spot metering
Partial metering
AF area metering
Center weighted metering
Video features
Video resolutions 3840 x 2160 @ 30p / 102 Mbps, MOV, H.264, Linear PCM -
Highest video resolution 3840x2160 None
Video file format MPEG-4, H.264 -
Microphone 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 proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 410 gr (0.90 lbs) 646 gr (1.42 lbs)
Dimensions 122 x 84 x 50mm (4.8" x 3.3" x 2.0") 129 x 91 x 71mm (5.1" x 3.6" x 2.8")
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 330 images -
Battery type Battery Pack -
Battery model BLS-50 4 x AA
Self timer Yes (2 or 12 secs, custom) Yes (2 or 12 sec)
Time lapse shooting
Type of storage SD/SDHC/SDXC (UHS-I/II supported) SD/SDHC card
Card slots Single Single
Cost at launch $650 $520