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Olympus E-M1 II vs Pentax S1

Portability
68
Imaging
59
Features
93
Overall
72
Olympus OM-D E-M1 Mark II front
 
Pentax Optio S1 front
Portability
93
Imaging
37
Features
31
Overall
34

Olympus E-M1 II vs Pentax S1 Key Specs

Olympus E-M1 II
(Full Review)
  • 20MP - Four Thirds Sensor
  • 3" Fully Articulated Screen
  • ISO 200 - 25600
  • Sensor based 5-axis Image Stabilization
  • No Anti-Alias Filter
  • 1/8000s Max Shutter
  • 4096 x 2160 video
  • Micro Four Thirds Mount
  • 574g - 134 x 91 x 67mm
  • Introduced September 2016
  • Previous Model is Olympus E-M1
  • Renewed by Olympus E-M1 III
Pentax S1
(Full Review)
  • 14MP - 1/2.3" Sensor
  • 2.7" Fixed Screen
  • 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-M1 II vs Pentax S1 Overview

Here is a comprehensive assessment of the Olympus E-M1 II vs Pentax S1, one being a Pro Mirrorless and the latter is a Small Sensor Compact by rivals Olympus and Pentax. There is a huge difference between the sensor resolutions of the E-M1 II (20MP) and S1 (14MP) and the E-M1 II (Four Thirds) and S1 (1/2.3") possess different sensor dimensions.

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The E-M1 II was revealed 5 years later than the S1 and that is quite a significant gap as far as tech is concerned. Both of these cameras offer different body type with the Olympus E-M1 II being a SLR-style mirrorless camera and the Pentax S1 being a Compact camera.

Before delving in to a in-depth comparison, below is a simple synopsis of how the E-M1 II matches up versus the S1 in regards to portability, imaging, features and an overall rating.

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Reasons to pick Olympus E-M1 II over the Pentax S1

 E-M1 II S1 
IntroducedSeptember 2016March 2011Fresher by 68 months
Screen typeFully ArticulatedFixed Fully Articulating screen
Screen sizing3"2.7"Bigger screen (+0.3")
Screen resolution1037k230kClearer screen (+807k dot)
Selfie screen Easy selfies
Touch screen Quickly navigate

Reasons to pick Pentax S1 over the Olympus E-M1 II

 S1 E-M1 II 

Common features in the Olympus E-M1 II and Pentax S1

 E-M1 II S1 
Focus manually More accurate focus

Olympus E-M1 II vs Pentax S1 Physical Comparison

If you are aiming to carry your camera, you are going to need to factor its weight and measurements. The Olympus E-M1 II offers outside measurements of 134mm x 91mm x 67mm (5.3" x 3.6" x 2.6") with a weight of 574 grams (1.27 lbs) and the Pentax S1 has proportions of 114mm x 58mm x 28mm (4.5" x 2.3" x 1.1") along with a weight of 157 grams (0.35 lbs).

See the Olympus E-M1 II vs Pentax S1 in the all new Camera and Lens Size Comparison Tool. Camera Size Comparison with Lenses

Take into account, the weight of an Interchangeable Lens Camera will change dependant on the lens you have chosen during that time. Following is the front view sizing comparison of the E-M1 II versus the S1.

Olympus E-M1 II vs Pentax S1 size comparison

Considering size and weight, the portability score of the E-M1 II and S1 is 68 and 93 respectively.

Olympus E-M1 II vs Pentax S1 top view buttons comparison

Olympus E-M1 II vs Pentax S1 Sensor Comparison

Usually, it is very difficult to picture the contrast between sensor sizing just by checking technical specs. The graphic here may give you a stronger sense of the sensor measurements in the E-M1 II and S1.

As you have seen, the 2 cameras enjoy different resolutions and different sensor sizing. The E-M1 II with its bigger sensor is going to make getting shallow depth of field easier and the Olympus E-M1 II will give extra detail because of its extra 6MP. Higher resolution will also allow you to crop photographs far more aggressively. The more recent E-M1 II provides a benefit when it comes to sensor innovation.

Olympus E-M1 II vs Pentax S1 sensor size comparison

Olympus E-M1 II vs Pentax S1 Screen and ViewFinder

Olympus E-M1 II vs Pentax S1 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Olympus E-M1 II Portrait photography info
Pentax S1 Portrait photography info
75
you can focus manually
good resolution (20 megapixels)
nice sensor size (Four Thirds)
offers face detect focusing
supports RAW files
35
has manual focus
decent sensor resolution (14 megapixels)
no manual control
cannot use external flash
tiny sensor (1/2.3")
lacks RAW files
Photography Glossary

Street Comparison

Olympus E-M1 II as a Street photography camera
Pentax S1 as a Street photography camera
78
fully articulated screen
has image stabilization (Sensor based 5-axis)
nice sensor size (Four Thirds)
supports RAW files
has focus by touch
environment proofing
lighter than competitors in class (574g)
great ISO range (25,600)
56
image stabilization (Sensor-shift)
fixed screen
tiny sensor (1/2.3")
lacks RAW files
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Sports Comparison

Olympus E-M1 II Sports photography details
Pentax S1 Sports photography details
74
great max shutter speed (1/8,000s)
quiet mode (1/32,000s)
max fps high (60.0 fps)
has image stabilization (Sensor based 5-axis)
good resolution (20 megapixels)
nice sensor size (Four Thirds)
offers tracking focus
environment proofing
has phase detect AF
low battery pack (350 per charge)
39
image stabilization (Sensor-shift)
decent sensor resolution (14 megapixels)
includes tracking autofocus
max frames per second very slow (1.0 fps)
no shutter priority
tiny sensor (1/2.3")
lacks phase detect auto focus
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Travel Comparison

Olympus E-M1 II Travel photography info
Pentax S1 Travel photography info
72
lighter than competitors in class (574 grams)
environment proofing
has focus by touch
good resolution (20MP)
selfie friendly screen
low battery pack (350 CIPA)
64
decent sensor resolution (14MP)
flash built-in
rather wide (28mm)
doesn't have Timelapse function
screen isn't selfie friendly
somewhat slow max aperture (f3.5)
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Landscape Comparison

Olympus E-M1 II Landscape photography info
Pentax S1 Landscape photography info
76
you can focus manually
switch lenses (Micro Four Thirds mount)
screen size is good (3")
has image stabilization (Sensor based 5-axis)
good resolution (20 megapixels)
nice sensor size (Four Thirds)
does not have anti-alias filter
great ISO range (25,600)
supports RAW files
environment proofing
2 card slots
low battery pack (350 per charge)
42
has manual focus
rather wide (28mm)
image stabilization (Sensor-shift)
decent sensor resolution (14 megapixels)
lens is fixed (fixed lens mount)
somewhat slow max aperture (f3.5)
screen is somewhat small (2.7")
no manual control
tiny sensor (1/2.3")
lacks RAW files
doesn't have Timelapse function
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Vlogging Comparison

Olympus E-M1 II Vlogging features
Pentax S1 Vlogging features
79
selfie friendly screen
touchscreen enabled
has image stabilization (Sensor based 5-axis)
offers face detect focusing
great video quality (4096 x 2160 pxls)
has microphone support
lighter than competitors in class (574 grams)
28
rather wide (28mm)
image stabilization (Sensor-shift)
somewhat slow max aperture (f3.5)
screen isn't selfie friendly
video quality not great (1280 x 720 resolution)
doesn't have external microphone support
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Olympus E-M1 II vs Pentax S1 Specifications

Detailed spec comparison table for Olympus E-M1 II and Pentax S1
 Olympus OM-D E-M1 Mark IIPentax Optio S1
General Information
Brand Name Olympus Pentax
Model Olympus OM-D E-M1 Mark II Pentax Optio S1
Category Pro Mirrorless Small Sensor Compact
Introduced 2016-09-19 2011-03-02
Physical type SLR-style mirrorless Compact
Sensor Information
Powered by TruePic VIII -
Sensor type CMOS CCD
Sensor size Four Thirds 1/2.3"
Sensor measurements 17.4 x 13mm 6.17 x 4.55mm
Sensor area 226.2mm² 28.1mm²
Sensor resolution 20MP 14MP
Anti aliasing filter
Aspect ratio 4:3 1:1, 4:3 and 16:9
Full resolution 5184 x 3888 4288 x 3216
Max native ISO 25600 6400
Lowest native ISO 200 80
RAW images
Lowest boosted ISO 64 -
Autofocusing
Manual focus
Touch focus
Autofocus continuous
Autofocus single
Tracking autofocus
Selective autofocus
Autofocus center weighted
Multi area autofocus
Autofocus live view
Face detection focus
Contract detection focus
Phase detection focus
Number of focus points 121 9
Lens
Lens mount Micro Four Thirds fixed lens
Lens focal range - 28-140mm (5.0x)
Highest aperture - f/3.5-5.5
Macro focus range - 1cm
Number of lenses 107 -
Crop factor 2.1 5.8
Screen
Type of screen Fully Articulated Fixed Type
Screen diagonal 3 inch 2.7 inch
Screen resolution 1,037k dots 230k dots
Selfie friendly
Liveview
Touch capability
Screen tech - TFT color LCD with Anti-reflective coating
Viewfinder Information
Viewfinder Electronic None
Viewfinder resolution 2,360k dots -
Viewfinder coverage 100 percent -
Viewfinder magnification 0.74x -
Features
Slowest shutter speed 60s 4s
Maximum shutter speed 1/8000s 1/1500s
Maximum silent shutter speed 1/32000s -
Continuous shooting rate 60.0 frames/s 1.0 frames/s
Shutter priority
Aperture priority
Manual mode
Exposure compensation Yes -
Change white balance
Image stabilization
Integrated flash
Flash range 9.10 m (at ISO 100) 3.90 m
Flash options Redeye, Fill-in, Flash Off, Red-eye Slow sync.(1st curtain), Slow sync.(1st curtain), Slow sync.(2nd curtain), Manual Auto, On, Off, Red-eye, Soft
Hot shoe
AE bracketing
WB bracketing
Maximum flash synchronize 1/250s -
Exposure
Multisegment
Average
Spot
Partial
AF area
Center weighted
Video features
Supported video resolutions 4096 x 2160 @ 24p / 237 Mbps, MOV, H.264, Linear PCM, 3840 x 2160 @ 30p / 102 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 4096x2160 1280x720
Video file format MOV, H.264 Motion JPEG
Microphone support
Headphone support
Connectivity
Wireless Built-In None
Bluetooth
NFC
HDMI
USB USB 3.0 (5 GBit/sec) USB 2.0 (480 Mbit/sec)
GPS None None
Physical
Environment sealing
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 574 gr (1.27 lbs) 157 gr (0.35 lbs)
Dimensions 134 x 91 x 67mm (5.3" x 3.6" x 2.6") 114 x 58 x 28mm (4.5" x 2.3" x 1.1")
DXO scores
DXO All around score 80 not tested
DXO Color Depth score 23.7 not tested
DXO Dynamic range score 12.8 not tested
DXO Low light score 1312 not tested
Other
Battery life 350 shots 260 shots
Battery style Battery Pack Battery Pack
Battery model BLH-1 D-LI92
Self timer Yes (2 or 12 secs, custom) Yes (2 or 10 sec)
Time lapse shooting
Storage type Dual SD/SDHC/SDXC slots SD/SDHC/SDXC, Internal
Card slots Two 1
Pricing at launch $1,700 $174