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Olympus E-M10 IV vs Pentax K100D

Portability
81
Imaging
63
Features
83
Overall
71
Olympus OM-D E-M10 IV front
 
Pentax K100D front
Portability
64
Imaging
45
Features
36
Overall
41

Olympus E-M10 IV vs Pentax K100D Key Specs

Olympus E-M10 IV
(Full Review)
  • 20MP - Four Thirds Sensor
  • 3" Tilting Screen
  • ISO 200 - 25600
  • Sensor based 5-axis Image Stabilization
  • 3840 x 2160 video
  • Micro Four Thirds Mount
  • 383g - 122 x 84 x 49mm
  • Announced August 2020
  • Succeeded the Olympus E-M10 III
Pentax K100D
(Full Review)
  • 6MP - APS-C Sensor
  • 2.5" Fixed Display
  • ISO 200 - 3200
  • Sensor based Image Stabilization
  • No Video
  • Pentax KAF Mount
  • 660g - 129 x 93 x 70mm
  • Announced December 2006
  • Newer Model is Pentax K100D S
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Olympus E-M10 IV vs Pentax K100D Overview

Below, we are contrasting the Olympus E-M10 IV and Pentax K100D, one being a Entry-Level Mirrorless and the other is a Entry-Level DSLR by brands Olympus and Pentax. There exists a sizeable gap between the sensor resolutions of the E-M10 IV (20MP) and K100D (6MP) and the E-M10 IV (Four Thirds) and K100D (APS-C) come with different sensor sizing.

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The E-M10 IV was launched 13 years later than the K100D and that is quite a large gap as far as technology is concerned. Both of the cameras come with different body type with the Olympus E-M10 IV being a SLR-style mirrorless camera and the Pentax K100D being a Compact SLR camera.

Before going straight into a comprehensive comparison, below is a quick introduction of how the E-M10 IV grades versus the K100D with respect to portability, imaging, features and an overall rating.

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

 E-M10 IV K100D 
AnnouncedAugust 2020December 2006Fresher by 167 months
Display typeTiltingFixed Tilting display
Display dimension3"2.5"Larger display (+0.5")
Display resolution1040k210kSharper display (+830k dot)
Selfie screen Easy selfies
Touch friendly display Easily navigate

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

 K100D E-M10 IV 

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

 E-M10 IV K100D 
Manually focus Dial accurate focusing

Olympus E-M10 IV vs Pentax K100D Physical Comparison

For those who are going to carry your camera regularly, you will need to take into account its weight and proportions. The Olympus E-M10 IV comes with external dimensions of 122mm x 84mm x 49mm (4.8" x 3.3" x 1.9") accompanied by a weight of 383 grams (0.84 lbs) whilst the Pentax K100D has measurements of 129mm x 93mm x 70mm (5.1" x 3.7" x 2.8") with a weight of 660 grams (1.46 lbs).

Examine the Olympus E-M10 IV and Pentax K100D in the latest Camera and Lens Size Comparison Tool. Camera Size Comparison with Lenses

Do not forget, the weight of an Interchangeable Lens Camera will vary depending on the lens you are using during that time. Here is the front view scale comparison of the E-M10 IV versus the K100D.

Olympus E-M10 IV vs Pentax K100D size comparison

Taking into account dimensions and weight, the portability rating of the E-M10 IV and K100D is 81 and 64 respectively.

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

Olympus E-M10 IV vs Pentax K100D Sensor Comparison

Normally, it is tough to picture the difference between sensor sizing purely by going over specs. The photograph here will help offer you a greater sense of the sensor dimensions in the E-M10 IV and K100D.

As you can plainly see, both cameras have got different megapixels and different sensor sizing. The E-M10 IV due to its tinier sensor is going to make shooting shallow depth of field tougher and the Olympus E-M10 IV will offer more detail utilizing its extra 14MP. Greater resolution will also let you crop images much more aggressively. The more recent E-M10 IV provides an edge with regard to sensor technology.

Olympus E-M10 IV vs Pentax K100D sensor size comparison

Olympus E-M10 IV vs Pentax K100D Screen and ViewFinder

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

Portrait Comparison

Olympus E-M10 IV as a Portrait photography camera
Pentax K100D as a Portrait photography camera
77
focusing manually
MP count good (20 megapixels)
nice sensor size (Four Thirds)
features face detection focus
saves RAW files
51
focusing manually
good sensor size (APS-C)
saves RAW files
no liveview feature
sensor resolution low (6 megapixels)
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Street Comparison

Olympus E-M10 IV as a Street photography camera
Pentax K100D as a Street photography camera
84
tilting screen
has image stabilization (Sensor based 5-axis)
nice sensor size (Four Thirds)
saves RAW files
includes focus by touch
good high ISO (25,600)
58
has image stabilization (Sensor based)
good sensor size (APS-C)
saves RAW files
no articulating screen
heavier than others in class (660g)
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Sports Comparison

Olympus E-M10 IV Sports photography information
Pentax K100D Sports photography information
73
quiet shutter (1/16,000 seconds)
has image stabilization (Sensor based 5-axis)
MP count good (20MP)
nice sensor size (Four Thirds)
features tracking autofocus
has no phase detect auto focus
47
has image stabilization (Sensor based)
good sensor size (APS-C)
sensor has phase detect AF
no liveview feature
slow continuous shooting (3.0 fps)
sensor resolution low (6 megapixels)
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Travel Comparison

Olympus E-M10 IV Travel photography factors
Pentax K100D Travel photography factors
85
connects via bluetooth
includes focus by touch
MP count good (20 megapixels)
flash built-in
display is selfie friendly
42
has built in flash
missing Time Lapse function
heavier than others in class (660 grams)
sensor resolution low (6MP)
doesn't have a selfie friendly screen
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Landscape Comparison

Landscape photography with Olympus E-M10 IV
Landscape photography with Pentax K100D
83
focusing manually
switch lenses (Micro Four Thirds mount)
nice screen size (3 inch)
has image stabilization (Sensor based 5-axis)
MP count good (20MP)
nice sensor size (Four Thirds)
good high ISO (25,600)
saves RAW files
52
focusing manually
swap lenses (Pentax KAF mount)
has image stabilization (Sensor based)
good sensor size (APS-C)
saves RAW files
screen is small (2.5 inches)
no liveview feature
sensor resolution low (6 megapixels)
missing Time Lapse function
Photography Glossary

Vlogging Comparison

Olympus E-M10 IV Vlogging advice
Pentax K100D Vlogging advice
78
display is selfie friendly
touchscreen enabled
has image stabilization (Sensor based 5-axis)
features face detection focus
high res video (3840 x 2160 pixels)
does not have external microphone jack
9
lack of video recording
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Olympus E-M10 IV vs Pentax K100D Specifications

Detailed spec comparison table for Olympus E-M10 IV and Pentax K100D
 Olympus OM-D E-M10 IVPentax K100D
General Information
Brand Name Olympus Pentax
Model Olympus OM-D E-M10 IV Pentax K100D
Category Entry-Level Mirrorless Entry-Level DSLR
Announced 2020-08-04 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 area 226.2mm² 369.0mm²
Sensor resolution 20 megapixels 6 megapixels
Anti aliasing filter
Aspect ratio 1:1, 4:3, 3:2 and 16:9 3:2
Maximum resolution 5184 x 3888 3008 x 2008
Maximum native ISO 25600 3200
Min native ISO 200 200
RAW images
Min boosted ISO 100 -
Autofocusing
Manual focus
Touch to focus
Continuous AF
AF single
AF tracking
Selective AF
Center weighted AF
AF multi area
AF live view
Face detection AF
Contract detection AF
Phase detection AF
Number of focus points 121 11
Lens
Lens mounting type Micro Four Thirds Pentax KAF
Amount of lenses 107 151
Focal length multiplier 2.1 1.5
Screen
Screen type Tilting Fixed Type
Screen sizing 3 inch 2.5 inch
Screen resolution 1,040 thousand dots 210 thousand dots
Selfie friendly
Liveview
Touch operation
Viewfinder Information
Viewfinder type Electronic Optical (pentamirror)
Viewfinder resolution 2,360 thousand dots -
Viewfinder coverage 100% 96%
Viewfinder magnification 0.62x 0.57x
Features
Slowest shutter speed 60s 30s
Maximum shutter speed 1/4000s 1/4000s
Maximum silent shutter speed 1/16000s -
Continuous shooting rate 8.7 frames per sec 3.0 frames per sec
Shutter priority
Aperture priority
Manual mode
Exposure compensation Yes Yes
Change WB
Image stabilization
Built-in flash
Flash range 7.20 m (at ISO 200) -
Flash settings Redeye, fill-in, off, redeye slow-sync (1st-curtain), slow sync (1st-curtain), slow sync (2nd-curtain), manual Auto, On, Off, Red-eye reduction
External flash
Auto exposure bracketing
White balance bracketing
Maximum 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 PCM3840 x 2160 @ 25p / 102 Mbps, MOV, H.264, Linear PCM3840 x 2160 @ 24p / 102 Mbps, MOV, H.264, Linear PCM1920 x 1080 @ 60p / 52 Mbps, MOV, H.264, Linear PCM1920 x 1080 @ 50p / 52 Mbps, MOV, H.264, Linear PCM1920 x 1080 @ 30p / 52 Mbps, MOV, H.264, Linear PCM1920 x 1080 @ 25p / 52 Mbps, MOV, H.264, Linear PCM1920 x 1080 @ 24p / 52 Mbps, MOV, H.264, Linear PCM -
Maximum video resolution 3840x2160 None
Video file format MPEG-4, H.264 -
Mic support
Headphone support
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
Environmental sealing
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 383 gr (0.84 pounds) 660 gr (1.46 pounds)
Dimensions 122 x 84 x 49mm (4.8" x 3.3" x 1.9") 129 x 93 x 70mm (5.1" x 3.7" 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 360 images -
Type of battery Battery Pack -
Battery model BLS-50 4 x AA
Self timer Yes (2 or 12 sec, custom) Yes (2 or 12 sec)
Time lapse shooting
Type of storage SD/SDHC/SDXC (UHS-II supported) SD/MMC card
Card slots One One
Launch price $699 $0