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Olympus PEN-F vs Pentax K-S1

Portability
84
Imaging
59
Features
79
Overall
67
Olympus PEN-F front
 
Pentax K-S1 front
Portability
69
Imaging
63
Features
70
Overall
65

Olympus PEN-F vs Pentax K-S1 Key Specs

Olympus PEN-F
(Full Review)
  • 20MP - Four Thirds Sensor
  • 3" Fully Articulated Display
  • ISO 200 - 25600
  • Sensor based 5-axis Image Stabilization
  • 1/8000s Maximum Shutter
  • 1920 x 1080 video
  • Micro Four Thirds Mount
  • 427g - 125 x 72 x 37mm
  • Released January 2016
Pentax K-S1
(Full Review)
  • 20MP - APS-C Sensor
  • 3" Fixed Display
  • ISO 100 - 51200
  • Sensor based Image Stabilization
  • No Anti-Alias Filter
  • 1/6000s Max Shutter
  • 1920 x 1080 video
  • Pentax KAF2 Mount
  • 558g - 121 x 93 x 70mm
  • Announced August 2014
  • Newer Model is Pentax K-S2
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Olympus PEN-F vs Pentax K-S1 Overview

In this write-up, we are reviewing the Olympus PEN-F versus Pentax K-S1, one is a Advanced Mirrorless and the other is a Advanced DSLR by brands Olympus and Pentax. The resolution of the PEN-F (20MP) and the K-S1 (20MP) is very well matched but the PEN-F (Four Thirds) and K-S1 (APS-C) come with totally different sensor sizing.

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The PEN-F was revealed 18 months after the K-S1 making the cameras a generation away from one another. Both cameras offer different body type with the Olympus PEN-F being a Rangefinder-style mirrorless camera and the Pentax K-S1 being a Mid-size SLR camera.

Before getting straight into a step-by-step comparison, below is a short synopsis of how the PEN-F matches up vs the K-S1 with regard to portability, imaging, features and an overall score.

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Reasons to pick Olympus PEN-F over the Pentax K-S1

 PEN-F K-S1 
AnnouncedJanuary 2016August 2014More modern by 18 months
Display typeFully ArticulatedFixed Fully Articulating display
Display resolution1037k921kClearer display (+116k dot)
Selfie screen Easy selfies
Touch friendly display Easily navigate

Reasons to pick Pentax K-S1 over the Olympus PEN-F

 K-S1 PEN-F 

Common features in the Olympus PEN-F and Pentax K-S1

 PEN-F K-S1 
Manual focus More accurate focus
Display sizing3"3"Equivalent display measurement

Olympus PEN-F vs Pentax K-S1 Physical Comparison

For anyone who is looking to carry around your camera frequently, you will want to take into account its weight and volume. The Olympus PEN-F enjoys outer dimensions of 125mm x 72mm x 37mm (4.9" x 2.8" x 1.5") with a weight of 427 grams (0.94 lbs) and the Pentax K-S1 has sizing of 121mm x 93mm x 70mm (4.8" x 3.7" x 2.8") accompanied by a weight of 558 grams (1.23 lbs).

Look at the Olympus PEN-F versus Pentax K-S1 in the latest Camera with Lens Size Comparison Tool. Camera Size Comparison with Lenses

Always remember, the weight of an Interchangeable Lens Camera will vary based on the lens you are utilizing at that moment. Here is the front view size comparison of the PEN-F compared to the K-S1.

Olympus PEN-F vs Pentax K-S1 size comparison

Considering dimensions and weight, the portability score of the PEN-F and K-S1 is 84 and 69 respectively.

Olympus PEN-F vs Pentax K-S1 top view buttons comparison

Olympus PEN-F vs Pentax K-S1 Sensor Comparison

More often than not, it's difficult to see the difference between sensor sizes only by reading through specs. The picture here should give you a clearer sense of the sensor dimensions in the PEN-F and K-S1.

As you can plainly see, both cameras enjoy the same exact megapixels but not the same sensor sizes. The PEN-F provides the tinier sensor which is going to make obtaining shallower DOF harder. The more recent PEN-F is going to have an advantage when it comes to sensor innovation.

Olympus PEN-F vs Pentax K-S1 sensor size comparison

Olympus PEN-F vs Pentax K-S1 Screen and ViewFinder

Olympus PEN-F vs Pentax K-S1 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Olympus PEN-F as a Portrait photography camera
Pentax K-S1 as a Portrait photography camera
75
has manual focus
decent megapixels (20MP)
sensor size is nice (Four Thirds)
offers face detection focusing
supports RAW files
77
you can focus manually
good megapixels (20MP)
good sensor size (APS-C)
provides face detect focus
exports RAW formats
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Street Comparison

Olympus PEN-F as a Street photography camera
Pentax K-S1 as a Street photography camera
84
fully articulated screen
has image stabilization (Sensor based 5-axis)
sensor size is nice (Four Thirds)
supports RAW files
offers touch to focus
good ISO range (25,600)
73
built in image stabilization (Sensor based)
good sensor size (APS-C)
exports RAW formats
lighter than competition (558 grams)
good ISO range (51,200)
fixed screen
Photography Glossary

Sports Comparison

Olympus PEN-F as a Sports photography camera
Pentax K-S1 as a Sports photography camera
67
maximum shutter speed is high (1/8,000 seconds)
silent shutter (1/16,000 seconds)
has image stabilization (Sensor based 5-axis)
decent megapixels (20MP)
sensor size is nice (Four Thirds)
offers tracking autofocus
not so great battery pack (330 per charge)
lack of phase detect AF
69
great max shutter speed (1/6,000 seconds)
built in image stabilization (Sensor based)
good megapixels (20MP)
good sensor size (APS-C)
provides tracking focus
comes with phase detect auto focus
slow fps (5.4 frames/s)
terrible battery power (410 shots)
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Travel Comparison

Olympus PEN-F as a Travel photography camera
Pentax K-S1 as a Travel photography camera
75
offers touch to focus
decent megapixels (20MP)
selfie friendly display
not so great battery pack (330 shots)
60
lighter than competition (558 grams)
good megapixels (20MP)
flash built-in
missing Timelapse recording
terrible battery power (410 shots)
doesn't feature selfie friendly display
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Landscape Comparison

Olympus PEN-F Landscape photography information
Pentax K-S1 Landscape photography information
76
has manual focus
swap lenses (Micro Four Thirds mount)
screen is a decent size (3 inch)
has image stabilization (Sensor based 5-axis)
decent megapixels (20MP)
sensor size is nice (Four Thirds)
good ISO range (25,600)
supports RAW files
not so great battery pack (330 per charge)
73
you can focus manually
switch lenses (Pentax KAF2 mount)
screen size is good (3 inch)
built in image stabilization (Sensor based)
good megapixels (20MP)
good sensor size (APS-C)
doesnt have anti-alias filter
good ISO range (51,200)
exports RAW formats
terrible battery power (410 per charge)
missing Timelapse recording
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Vlogging Comparison

Olympus PEN-F as a Vlogging camera
Pentax K-S1 as a Vlogging camera
78
selfie friendly display
touch screen
has image stabilization (Sensor based 5-axis)
offers face detection focusing
video resolution high (1920 x 1080 pxls)
doesn't have external mic jack
33
built in image stabilization (Sensor based)
provides face detect focus
high video quality (1920 x 1080 pxls)
lighter than competition (558 grams)
doesn't feature selfie friendly display
missing microphone jack
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Olympus PEN-F vs Pentax K-S1 Specifications

Detailed spec comparison table for Olympus PEN-F and Pentax K-S1
 Olympus PEN-FPentax K-S1
General Information
Make Olympus Pentax
Model type Olympus PEN-F Pentax K-S1
Class Advanced Mirrorless Advanced DSLR
Released 2016-01-27 2014-08-27
Body design Rangefinder-style mirrorless Mid-size SLR
Sensor Information
Processor Chip TruePic VII Prime MII
Sensor type CMOS CMOS
Sensor size Four Thirds APS-C
Sensor measurements 17.3 x 13mm 23.5 x 15.6mm
Sensor surface area 224.9mm² 366.6mm²
Sensor resolution 20 megapixels 20 megapixels
Anti alias filter
Aspect ratio 1:1, 4:3, 3:2 and 16:9 3:2
Highest resolution 5184 x 3888 5472 x 3648
Highest native ISO 25600 51200
Min native ISO 200 100
RAW photos
Min boosted ISO 80 -
Autofocusing
Focus manually
AF touch
AF continuous
Single AF
AF tracking
AF selectice
Center weighted AF
Multi area AF
Live view AF
Face detect AF
Contract detect AF
Phase detect AF
Total focus points 81 11
Lens
Lens support Micro Four Thirds Pentax KAF2
Total lenses 107 151
Focal length multiplier 2.1 1.5
Screen
Range of display Fully Articulated Fixed Type
Display sizing 3 inch 3 inch
Display resolution 1,037 thousand dot 921 thousand dot
Selfie friendly
Liveview
Touch friendly
Viewfinder Information
Viewfinder Electronic Optical (pentaprism)
Viewfinder resolution 2,360 thousand dot -
Viewfinder coverage 100% 100%
Viewfinder magnification 0.62x 0.64x
Features
Lowest shutter speed 60 seconds 30 seconds
Highest shutter speed 1/8000 seconds 1/6000 seconds
Highest quiet shutter speed 1/16000 seconds -
Continuous shooting speed 10.0 frames/s 5.4 frames/s
Shutter priority
Aperture priority
Manual exposure
Exposure compensation Yes Yes
Custom WB
Image stabilization
Built-in flash
Flash distance no built-in flash 10.00 m (at ISO 100)
Flash modes Flash Auto, Redeye, Fill-in, Flash Off, Red-eye Slow sync (1st curtain), Slow sync (1st curtain), Slow sync (2nd curtain) Auto, auto + redeye, on, on + redeye reduction, slow sync, trailing curtain sync, manual
Hot shoe
AE bracketing
WB bracketing
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Video resolutions 1920 x 1080 (60p, 50p, 30p, 25p, 24p), 1280 x 720 (60p, 50p, 30p, 25p, 24p) 1920 x 1080 (30,25,24 fps), 1280 x 720 (60,50 fps)
Highest video resolution 1920x1080 1920x1080
Video file format MPEG-4, H.264, Motion JPEG 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 proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 427g (0.94 pounds) 558g (1.23 pounds)
Dimensions 125 x 72 x 37mm (4.9" x 2.8" x 1.5") 121 x 93 x 70mm (4.8" x 3.7" x 2.8")
DXO scores
DXO All around rating 74 78
DXO Color Depth rating 23.1 23.5
DXO Dynamic range rating 12.4 13.0
DXO Low light rating 894 1061
Other
Battery life 330 photographs 410 photographs
Type of battery Battery Pack Battery Pack
Battery ID BLN-1 D-LI109
Self timer Yes (2 or 12 seconds, custom) Yes ( 2 or 12 seconds)
Time lapse feature
Type of storage SD/SDHC/SDXC SD/SDHC/SDXC
Storage slots 1 1
Retail cost $1,000 $339