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Olympus E-M10 IV vs Pentax S1

Portability
81
Imaging
62
Features
83
Overall
70
Olympus OM-D E-M10 IV front
 
Pentax Optio S1 front
Portability
93
Imaging
37
Features
31
Overall
34

Olympus E-M10 IV vs Pentax S1 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
  • Introduced August 2020
  • Previous Model is Olympus E-M10 III
Pentax S1
(Full Review)
  • 14MP - 1/2.3" Sensor
  • 2.7" Fixed Display
  • ISO 80 - 6400
  • Sensor-shift Image Stabilization
  • 1280 x 720 video
  • 28-140mm (F3.5-5.5) lens
  • 157g - 114 x 58 x 28mm
  • Introduced March 2011
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Olympus E-M10 IV vs Pentax S1 Overview

Lets look a little more in depth at the Olympus E-M10 IV versus Pentax S1, one is a Entry-Level Mirrorless and the other is a Small Sensor Compact by rivals Olympus and Pentax. There exists a huge gap among the sensor resolutions of the E-M10 IV (20MP) and S1 (14MP) and the E-M10 IV (Four Thirds) and S1 (1/2.3") use totally different sensor sizing.

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The E-M10 IV was announced 9 years after the S1 which is a fairly significant gap as far as camera technology is concerned. Both of the cameras offer different body type with the Olympus E-M10 IV being a SLR-style mirrorless camera and the Pentax S1 being a Compact camera.

Before we go through a more detailed comparison, below is a brief highlight of how the E-M10 IV matches up versus the S1 for portability, imaging, features and an overall score.

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Reasons to pick Olympus E-M10 IV over the Pentax S1

 E-M10 IV S1 
IntroducedAugust 2020March 2011More modern by 115 months
Display typeTiltingFixed Tilting display
Display sizing3"2.7"Larger display (+0.3")
Display resolution1040k230kSharper display (+810k dot)
Selfie screen Easy selfies
Touch display Easily navigate

Reasons to pick Pentax S1 over the Olympus E-M10 IV

 S1 E-M10 IV 

Common features in the Olympus E-M10 IV and Pentax S1

 E-M10 IV S1 
Focus manually More exact focus

Olympus E-M10 IV vs Pentax S1 Physical Comparison

In case you're looking to carry around your camera often, you have to think about its weight and volume. The Olympus E-M10 IV features outer dimensions of 122mm x 84mm x 49mm (4.8" x 3.3" x 1.9") along with a weight of 383 grams (0.84 lbs) and the Pentax S1 has sizing of 114mm x 58mm x 28mm (4.5" x 2.3" x 1.1") having a weight of 157 grams (0.35 lbs).

Check out the Olympus E-M10 IV versus Pentax S1 in the new Camera with Lens Size Comparison Tool. Camera Size Comparison with Lenses

Remember that, the weight of an Interchangeable Lens Camera will change based on the lens you have at the time. Underneath is the front view measurement comparison of the E-M10 IV compared to the S1.

Olympus E-M10 IV vs Pentax S1 size comparison

Looking at dimensions and weight, the portability score of the E-M10 IV and S1 is 81 and 93 respectively.

Olympus E-M10 IV vs Pentax S1 top view buttons comparison

Olympus E-M10 IV vs Pentax S1 Sensor Comparison

Normally, it's tough to envision the contrast in sensor sizes simply by checking out technical specs. The image below might provide you a greater sense of the sensor sizes in the E-M10 IV and S1.

As you can tell, both of the cameras offer different megapixel count and different sensor sizes. The E-M10 IV having a larger sensor will make getting shallower DOF easier and the Olympus E-M10 IV will provide more detail with its extra 6 Megapixels. Greater resolution will help you crop photos a little more aggressively. The younger E-M10 IV will have an advantage in sensor innovation.

Olympus E-M10 IV vs Pentax S1 sensor size comparison

Olympus E-M10 IV vs Pentax S1 Screen and ViewFinder

Olympus E-M10 IV vs Pentax S1 Screen and Viewfinder comparison
Photography Glossary

Photography Type Scores

Portrait Comparison

Olympus E-M10 IV Portrait photography features
Pentax S1 Portrait photography features
77
manual focus
sensor resolution is decent (20MP)
decent sensor size (Four Thirds)
provides face detect focus
delivers RAW files
35
you can focus manually
decent MP (14 megapixels)
lack of manual exposure
no external flash support
sensor is very small (1/2.3")
lacks RAW files
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Street Comparison

Olympus E-M10 IV Street photography advice
Pentax S1 Street photography advice
84
has a tilting screen
image stabilization (Sensor based 5-axis)
decent sensor size (Four Thirds)
delivers RAW files
features touch focus
very good high ISO (25,600)
56
built in image stabilization (Sensor-shift)
fixed screen
sensor is very small (1/2.3")
lacks RAW files
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Sports Comparison

Olympus E-M10 IV Sports photography factors
Pentax S1 Sports photography factors
72
silent shutter (1/16,000s)
image stabilization (Sensor based 5-axis)
sensor resolution is decent (20MP)
decent sensor size (Four Thirds)
provides tracking focus
no phase detect auto focus
39
built in image stabilization (Sensor-shift)
decent MP (14MP)
comes with tracking focus
slow frames per second (1.0 frames/s)
no shutter priority mode
sensor is very small (1/2.3")
lacks phase detect auto focus
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Travel Comparison

Olympus E-M10 IV as a Travel photography camera
Pentax S1 as a Travel photography camera
84
has bluetooth
features touch focus
sensor resolution is decent (20MP)
built-in flash
screen is selfie friendly
64
decent MP (14MP)
built-in flash
pretty wide (28mm)
missing Time Lapse recording
screen isn't selfie friendly
sluggish max aperture (f3.5)
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Landscape Comparison

Olympus E-M10 IV Landscape photography advice
Pentax S1 Landscape photography advice
82
manual focus
swap lenses (Micro Four Thirds mount)
decent sized screen (3")
image stabilization (Sensor based 5-axis)
sensor resolution is decent (20MP)
decent sensor size (Four Thirds)
very good high ISO (25,600)
delivers RAW files
42
you can focus manually
pretty wide (28mm)
built in image stabilization (Sensor-shift)
decent MP (14 megapixels)
cannot switch lenses (fixed lens mount)
sluggish max aperture (f3.5)
screen is somewhat small (2.7 inch)
lack of manual exposure
sensor is very small (1/2.3")
lacks RAW files
missing Time Lapse recording
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Vlogging Comparison

Olympus E-M10 IV as a Vlogging camera
Pentax S1 as a Vlogging camera
78
screen is selfie friendly
screen is touchscreen
image stabilization (Sensor based 5-axis)
provides face detect focus
high res video (3840 x 2160 resolution)
missing microphone port
28
pretty wide (28mm)
built in image stabilization (Sensor-shift)
sluggish max aperture (f3.5)
screen isn't selfie friendly
low res video (1280 x 720 pxls)
missing mic socket
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Olympus E-M10 IV vs Pentax S1 Specifications

Detailed spec comparison table for Olympus E-M10 IV and Pentax S1
 Olympus OM-D E-M10 IVPentax Optio S1
General Information
Make Olympus Pentax
Model Olympus OM-D E-M10 IV Pentax Optio S1
Class Entry-Level Mirrorless Small Sensor Compact
Introduced 2020-08-04 2011-03-02
Physical type SLR-style mirrorless Compact
Sensor Information
Processor TruePic VIII -
Sensor type CMOS CCD
Sensor size Four Thirds 1/2.3"
Sensor dimensions 17.4 x 13mm 6.17 x 4.55mm
Sensor area 226.2mm² 28.1mm²
Sensor resolution 20MP 14MP
Anti aliasing filter
Aspect ratio 1:1, 4:3, 3:2 and 16:9 1:1, 4:3 and 16:9
Max resolution 5184 x 3888 4288 x 3216
Max native ISO 25600 6400
Minimum native ISO 200 80
RAW support
Minimum enhanced ISO 100 -
Autofocusing
Manual focus
Touch focus
Continuous autofocus
Single autofocus
Tracking autofocus
Selective autofocus
Center weighted autofocus
Autofocus multi area
Autofocus live view
Face detection autofocus
Contract detection autofocus
Phase detection autofocus
Number of focus points 121 9
Lens
Lens mount Micro Four Thirds fixed lens
Lens focal range - 28-140mm (5.0x)
Maximum aperture - f/3.5-5.5
Macro focus distance - 1cm
Available lenses 107 -
Crop factor 2.1 5.8
Screen
Screen type Tilting Fixed Type
Screen sizing 3 inches 2.7 inches
Resolution of screen 1,040 thousand dots 230 thousand dots
Selfie friendly
Liveview
Touch screen
Screen technology - TFT color LCD with Anti-reflective coating
Viewfinder Information
Viewfinder Electronic None
Viewfinder resolution 2,360 thousand dots -
Viewfinder coverage 100% -
Viewfinder magnification 0.62x -
Features
Minimum shutter speed 60 secs 4 secs
Fastest shutter speed 1/4000 secs 1/1500 secs
Fastest silent shutter speed 1/16000 secs -
Continuous shutter rate 8.7 frames/s 1.0 frames/s
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes -
Custom white balance
Image stabilization
Integrated flash
Flash range 7.20 m (at ISO 200) 3.90 m
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, Soft
External flash
AE bracketing
White balance bracketing
Fastest flash synchronize 1/250 secs -
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Supported 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 1280 x 720 (30, 15 fps), 640 x 480 (30, 15 fps), 320 x 240 (30, 15 fps)
Max video resolution 3840x2160 1280x720
Video file format MPEG-4, H.264 Motion JPEG
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 proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 383g (0.84 pounds) 157g (0.35 pounds)
Dimensions 122 x 84 x 49mm (4.8" x 3.3" x 1.9") 114 x 58 x 28mm (4.5" x 2.3" x 1.1")
DXO scores
DXO Overall 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 photographs 260 photographs
Battery type Battery Pack Battery Pack
Battery model BLS-50 D-LI92
Self timer Yes (2 or 12 sec, custom) Yes (2 or 10 sec)
Time lapse shooting
Storage type SD/SDHC/SDXC (UHS-II supported) SD/SDHC/SDXC, Internal
Card slots Single Single
Launch price $699 $174