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Olympus E-M10 IV vs Pentax K-S1

Portability
81 Imaging
62 Features
83 Overall
70
Olympus OM-D E-M10 IV front
 
Pentax K-S1 front
Portability
69 Imaging
63 Features
70 Overall
65

Olympus E-M10 IV vs Pentax K-S1 Key Specs

Olympus E-M10 IV
(Full Review)
  • 20MP - Four Thirds Sensor
  • 3" Tilting Display
  • 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
  • Replaced the Olympus E-M10 III
Pentax K-S1
(Full Review)
  • 20MP - APS-C Sensor
  • 3" Fixed Screen
  • ISO 100 - 51200
  • Sensor based Image Stabilization
  • No Anti-Alias Filter
  • 1/6000s Maximum Shutter
  • 1920 x 1080 video
  • Pentax KAF2 Mount
  • 558g - 121 x 93 x 70mm
  • Launched August 2014
  • Updated by Pentax K-S2
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Olympus E-M10 IV vs Pentax K-S1 Overview

Its time to look more closely at the Olympus E-M10 IV vs Pentax K-S1, former is a Entry-Level Mirrorless while the latter is a Advanced DSLR by rivals Olympus and Pentax. The resolution of the E-M10 IV (20MP) and the K-S1 (20MP) is pretty similar but the E-M10 IV (Four Thirds) and K-S1 (APS-C) offer different sensor sizes.

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The E-M10 IV was unveiled 6 years after the K-S1 which is quite a big difference as far as technology is concerned. Both of the cameras feature different body design with the Olympus E-M10 IV being a SLR-style mirrorless camera and the Pentax K-S1 being a Mid-size SLR camera.

Before we go into a full comparison, here is a quick synopsis of how the E-M10 IV matches up vs the K-S1 in terms of portability, imaging, features and an overall mark.

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

		

		

			
 E-M10 IV K-S1 
LaunchedAugust 2020August 2014Newer by 73 months
Screen typeTiltingFixed Tilting screen
Screen resolution1040k921kClearer screen (+119k dot)
Selfie screen  Take selfies
Touch friendly screen  Quickly navigate
		

	

	
	

		

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

		

		

			
 K-S1 E-M10 IV 
		

	

	
	

		

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

		

		

			
 E-M10 IV K-S1 
Focus manually  Very exact focus
Screen size3"3"Same screen dimensions
		

	

	

	
	
	
	

	

		

		
Olympus E-M10 IV vs Pentax K-S1 Physical Comparison

		

		

			
For those who are intending to travel with your camera often, you're going to have to consider its weight and proportions. The Olympus E-M10 IV offers 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) and the Pentax K-S1 has measurements of 121mm x 93mm x 70mm (4.8" x 3.7" x 2.8") with a weight of 558 grams (1.23 lbs).
Contrast the Olympus E-M10 IV vs Pentax K-S1 in our brand new Camera & Lens Size Comparison Tool. Camera Size Comparison with Lenses
Remember, the weight of an ILC will vary based on the lens you are using at that time. Below is a front view over all size comparison of the E-M10 IV vs the K-S1.
Olympus E-M10 IV vs Pentax K-S1 size comparison
Factoring in dimensions and weight, the portability score of the E-M10 IV and K-S1 is 81 and 69 respectively.
Olympus E-M10 IV vs Pentax K-S1 top view buttons comparison		

	

	
	

		

		
Olympus E-M10 IV vs Pentax K-S1 Sensor Comparison

		

		

			
Normally, its tough to picture the difference between sensor dimensions simply by going over a spec sheet. The picture below will help offer you a far better sense of the sensor dimensions in the E-M10 IV and K-S1.
Clearly, both of those cameras come with the identical megapixel count albeit different sensor dimensions. The E-M10 IV features the tinier sensor which is going to make getting shallower depth of field tougher. The younger E-M10 IV should have a benefit with regard to sensor tech.
	
			Olympus E-M10 IV vs Pentax K-S1 sensor size comparison			
		

	

	
	

		

		
Olympus E-M10 IV vs Pentax K-S1 Screen and ViewFinder

		

		

					

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

	
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Photography Type Scores

		

	

	
Portrait Comparison
 Olympus E-M10 IV as a Portrait photography camera
 Pentax K-S1 as a Portrait photography camera
77
 has manual focus
 megapixel count decent (20MP)
 sensor size is decent (Four Thirds)
 provides face detection focusing
 supports RAW files
77
 has manual focus
 megapixel count good (20MP)
 sensor size is nice (APS-C)
 comes with face detect focusing
 delivers RAW files
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Street Comparison
Olympus E-M10 IV Street photography factors
Pentax K-S1 Street photography factors
84
 has a tilting screen
 has image stabilization (Sensor based 5-axis)
 sensor size is decent (Four Thirds)
 supports RAW files
 offers touch focus
 very good ISO range (25,600)
73
 image stabilization (Sensor based)
 sensor size is nice (APS-C)
 delivers RAW files
 lighter than competition (558g)
 good ISO range (51,200)
 fixed screen
Photography Glossary
Sports Comparison
Olympus E-M10 IV Sports photography information
Pentax K-S1 Sports photography information
72
 silent mode (1/16,000 seconds)
 has image stabilization (Sensor based 5-axis)
 megapixel count decent (20MP)
 sensor size is decent (Four Thirds)
 provides tracking autofocus
 no phase detect AF
69
 maximum shutter speed is high (1/6,000 seconds)
 image stabilization (Sensor based)
 megapixel count good (20 megapixels)
 sensor size is nice (APS-C)
 comes with tracking focus
 comes with phase detect AF
 very slow continuous shooting (5.4 frames/s)
 not so great battery life (410 per charge)
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Travel Comparison
Travel photography with Olympus E-M10 IV
Travel photography with Pentax K-S1
84
 connects via bluetooth
 offers touch focus
 megapixel count decent (20MP)
 flash built-in
 screen is selfie friendly
60
 lighter than competition (558g)
 megapixel count good (20 megapixels)
 has built in flash
 missing Timelapse recording
 not so great battery life (410 shots)
 display isn't selfie friendly
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Landscape Comparison
Landscape photography with Olympus E-M10 IV
Landscape photography with Pentax K-S1
82
 has manual focus
 change lenses (Micro Four Thirds mount)
 screen size is decent (3")
 has image stabilization (Sensor based 5-axis)
 megapixel count decent (20MP)
 sensor size is decent (Four Thirds)
 very good ISO range (25,600)
 supports RAW files
73
 has manual focus
 interchangeable lenses (Pentax KAF2 mount)
 screen size is good (3 inches)
 image stabilization (Sensor based)
 megapixel count good (20 megapixels)
 sensor size is nice (APS-C)
 doesnt have low pass filter
 good ISO range (51,200)
 delivers RAW files
 not so great battery life (410 per charge)
 missing Timelapse recording
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Vlogging Comparison
Olympus E-M10 IV Vlogging features
Pentax K-S1 Vlogging features
78
 screen is selfie friendly
 has touchscreen
 has image stabilization (Sensor based 5-axis)
 provides face detection focusing
 video resolution high (3840 x 2160 pxls)
 doesn't have external mic port
33
 image stabilization (Sensor based)
 comes with face detect focusing
 high video quality (1920 x 1080 pixels)
 lighter than competition (558 grams)
 display isn't selfie friendly
 missing microphone jack
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Olympus E-M10 IV vs Pentax K-S1 Specifications

		

		

					

		
		

			Detailed spec comparison table for Olympus E-M10 IV and Pentax K-S1
 Olympus OM-D E-M10 IVPentax K-S1
General Information
Manufacturer Olympus Pentax
Model Olympus OM-D E-M10 IV Pentax K-S1
Type Entry-Level Mirrorless Advanced DSLR
Introduced 2020-08-04 2014-08-27
Body design SLR-style mirrorless Mid-size SLR
Sensor Information
Processor Chip TruePic VIII 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 20 megapixels
Anti aliasing filter    
Aspect ratio 1:1, 4:3, 3:2 and  16:9 3:2
Peak resolution 5184 x 3888 5472 x 3648
Highest native ISO 25600 51200
Lowest native ISO 200 100
RAW format    
Lowest enhanced ISO 100 -
Autofocusing
Focus manually    
AF touch    
AF continuous    
Single AF    
AF tracking    
AF selectice    
AF center weighted    
Multi area AF    
Live view AF    
Face detect AF    
Contract detect AF    
Phase detect AF    
Number of focus points 121 11
Lens
Lens mount Micro Four Thirds Pentax KAF2
Total lenses 107 151
Focal length multiplier 2.1 1.5
Screen
Display type Tilting Fixed Type
Display size 3" 3"
Resolution of display 1,040 thousand dot 921 thousand dot
Selfie friendly    
Liveview    
Touch function    
Viewfinder Information
Viewfinder Electronic Optical (pentaprism)
Viewfinder resolution 2,360 thousand dot -
Viewfinder coverage 100% 100%
Viewfinder magnification 0.62x 0.64x
Features
Minimum shutter speed 60s 30s
Fastest shutter speed 1/4000s 1/6000s
Fastest quiet shutter speed 1/16000s -
Continuous shutter speed 8.7 frames/s 5.4 frames/s
Shutter priority    
Aperture priority    
Manual exposure    
Exposure compensation Yes Yes
Set WB    
Image stabilization    
Inbuilt flash    
Flash range 7.20 m (at ISO 200) 10.00 m (at ISO 100)
Flash options Redeye, fill-in, off, redeye slow-sync (1st-curtain), slow sync (1st-curtain), slow sync (2nd-curtain), manual Auto, auto + redeye, on, on + redeye reduction, slow sync, trailing curtain sync, manual
Hot shoe    
AEB    
WB bracketing    
Fastest flash sync 1/250s -
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 1920 x 1080 (30,25,24 fps), 1280 x 720 (60,50 fps)
Highest video resolution 3840x2160 1920x1080
Video file format MPEG-4, H.264 H.264
Microphone input    
Headphone input    
Connectivity
Wireless Built-In Eye-Fi Connected
Bluetooth    
NFC    
HDMI    
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS None Optional
Physical
Environmental seal    
Water proof    
Dust proof    
Shock proof    
Crush proof    
Freeze proof    
Weight 383 gr (0.84 pounds) 558 gr (1.23 pounds)
Physical dimensions 122 x 84 x 49mm (4.8" x 3.3" x 1.9") 121 x 93 x 70mm (4.8" x 3.7" x 2.8")
DXO scores
DXO Overall score not tested 78
DXO Color Depth score not tested 23.5
DXO Dynamic range score not tested 13.0
DXO Low light score not tested 1061
Other
Battery life 360 images 410 images
Battery format Battery Pack Battery Pack
Battery model BLS-50 D-LI109
Self timer Yes (2 or 12 sec, custom) Yes ( 2 or 12 seconds)
Time lapse shooting    
Storage media SD/SDHC/SDXC (UHS-II supported) SD/SDHC/SDXC
Storage slots Single Single
Retail cost $699 $339