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Pentax K-1 II vs Pentax S1

Portability
55
Imaging
78
Features
82
Overall
79
Pentax K-1 Mark II front
 
Pentax Optio S1 front
Portability
93
Imaging
37
Features
31
Overall
34

Pentax K-1 II vs Pentax S1 Key Specs

Pentax K-1 II
(Full Review)
  • 36MP - Full frame Sensor
  • 3.2" Fully Articulated Screen
  • ISO 100 - 819200
  • Sensor based 5-axis Image Stabilization
  • No Anti-Alias Filter
  • 1/8000s Maximum Shutter
  • 1920 x 1080 video
  • Pentax KAF4 Mount
  • 1010g - 137 x 110 x 86mm
  • Revealed February 2018
  • Previous Model is Pentax K-1
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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Pentax K-1 II vs Pentax S1 Overview

Here is a detailed comparison of the Pentax K-1 II vs Pentax S1, former being a Advanced DSLR while the latter is a Small Sensor Compact and both are offered by Pentax. There is a sizable difference between the sensor resolutions of the K-1 II (36MP) and S1 (14MP) and the K-1 II (Full frame) and S1 (1/2.3") possess different sensor size.

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The K-1 II was unveiled 7 years later than the S1 and that is quite a significant difference as far as tech is concerned. Each of these cameras come with different body type with the Pentax K-1 II being a Mid-size SLR camera and the Pentax S1 being a Compact camera.

Before diving in to a complete comparison, below is a brief highlight of how the K-1 II matches up against the S1 in terms of portability, imaging, features and an overall rating.

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Reasons to pick Pentax K-1 II over the Pentax S1

 K-1 II S1 
IntroducedFebruary 2018March 2011Fresher by 85 months
Screen typeFully ArticulatedFixed Fully Articulating screen
Screen dimension3.2"2.7"Bigger screen (+0.5")
Screen resolution1037k230kClearer screen (+807k dot)

Reasons to pick Pentax S1 over the Pentax K-1 II

 S1 K-1 II 

Common features in the Pentax K-1 II and Pentax S1

 K-1 II S1 
Manually focus Dial accurate focus
Selfie screen No selfie screen
Touch screen Neither provides Touch screen

Pentax K-1 II vs Pentax S1 Physical Comparison

For anybody who is intending to carry your camera often, you will have to take into account its weight and proportions. The Pentax K-1 II provides exterior dimensions of 137mm x 110mm x 86mm (5.4" x 4.3" x 3.4") and a weight of 1010 grams (2.23 lbs) while the Pentax S1 has measurements of 114mm x 58mm x 28mm (4.5" x 2.3" x 1.1") along with a weight of 157 grams (0.35 lbs).

Contrast the Pentax K-1 II vs Pentax S1 in our brand new Camera & Lens Size Comparison Tool. Camera Size Comparison with Lenses

Take into account, the weight of an ILC will change depending on the lens you select at that time. Below is the front view proportions comparison of the K-1 II compared to the S1.

Pentax K-1 II vs Pentax S1 size comparison

Factoring in size and weight, the portability score of the K-1 II and S1 is 55 and 93 respectively.

Pentax K-1 II vs Pentax S1 top view buttons comparison

Pentax K-1 II vs Pentax S1 Sensor Comparison

Usually, it can be hard to imagine the gap between sensor sizing purely by reading through technical specs. The photograph below will offer you a far better sense of the sensor dimensions in the K-1 II and S1.

As you can tell, both cameras posses different megapixels and different sensor sizing. The K-1 II with its bigger sensor is going to make getting shallower depth of field easier and the Pentax K-1 II will resolve more detail having an extra 22 Megapixels. Higher resolution will make it easier to crop pictures somewhat more aggressively. The more recent K-1 II provides an advantage with regard to sensor innovation.

Pentax K-1 II vs Pentax S1 sensor size comparison

Pentax K-1 II vs Pentax S1 Screen and ViewFinder

Pentax K-1 II vs Pentax S1 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Pentax K-1 II as a Portrait photography camera
Pentax S1 as a Portrait photography camera
86
focusing manually
high sensor resolution (36 megapixels)
sensor size is big (Full frame)
features face detect focus
saves RAW files
35
manual focus
MP count decent (14 megapixels)
no manual exposure
cannot use external flash
very small sensor size (1/2.3")
lacks RAW support
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Street Comparison

Pentax K-1 II as a Street photography camera
Pentax S1 as a Street photography camera
70
screen articulates fully
image stabilization (Sensor based 5-axis)
sensor size is big (Full frame)
saves RAW files
weather proofing
very good ISO range (819,200)
heavier than competitors (1,010g)
56
built in image stabilization (Sensor-shift)
screen does not articulate
very small sensor size (1/2.3")
lacks RAW support
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Sports Comparison

Pentax K-1 II Sports photography highlights
Pentax S1 Sports photography highlights
77
maximum shutter speed is high (1/8,000 seconds)
image stabilization (Sensor based 5-axis)
high sensor resolution (36MP)
sensor size is big (Full frame)
features tracking focus
weather proofing
sensor has phase detect auto focus
slow frames per second (4.4 frames/s)
low battery (670 CIPA)
39
built in image stabilization (Sensor-shift)
MP count decent (14MP)
includes tracking autofocus
max fps low (1.0 fps)
no shutter priority
very small sensor size (1/2.3")
lacks phase detect auto focus
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Travel Comparison

Pentax K-1 II Travel photography information
Pentax S1 Travel photography information
53
weather proofing
high sensor resolution (36 megapixels)
low battery (670 per charge)
heavier than competitors (1,010 grams)
screen isn't selfie friendly
64
MP count decent (14 megapixels)
has built in flash
reasonably wide (28mm)
doesn't have Time Lapse recording
screen isn't selfie friendly
somewhat slow maximum aperture (f3.5)
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Landscape Comparison

Pentax K-1 II Landscape photography factors
Pentax S1 Landscape photography factors
82
focusing manually
swap lenses (Pentax KAF4 mount)
nice screen size (3.2 inches)
image stabilization (Sensor based 5-axis)
high sensor resolution (36MP)
sensor size is big (Full frame)
no low pass filter
very good ISO range (819,200)
saves RAW files
weather proofing
has double storage slots
low battery (670 shots)
42
manual focus
reasonably wide (28mm)
built in image stabilization (Sensor-shift)
MP count decent (14MP)
cannot swap lenses (fixed lens mount)
somewhat slow maximum aperture (f3.5)
screen is small (2.7 inches)
no manual exposure
very small sensor size (1/2.3")
lacks RAW support
doesn't have Time Lapse recording
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Vlogging Comparison

Vlogging with Pentax K-1 II
Vlogging with Pentax S1
32
image stabilization (Sensor based 5-axis)
features face detect focus
high res video (1920 x 1080 pxls)
includes mic port
screen isn't selfie friendly
heavier than competitors (1,010g)
28
reasonably wide (28mm)
built in image stabilization (Sensor-shift)
somewhat slow maximum aperture (f3.5)
screen isn't selfie friendly
video resolution low (1280 x 720 resolution)
doesn't have external mic port
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Pentax K-1 II vs Pentax S1 Specifications

Detailed spec comparison table for Pentax K-1 II and Pentax S1
 Pentax K-1 Mark IIPentax Optio S1
General Information
Brand Pentax Pentax
Model Pentax K-1 Mark II Pentax Optio S1
Type Advanced DSLR Small Sensor Compact
Revealed 2018-02-22 2011-03-02
Body design Mid-size SLR Compact
Sensor Information
Chip PRIME IV -
Sensor type CMOS CCD
Sensor size Full frame 1/2.3"
Sensor dimensions 35.9 x 24mm 6.17 x 4.55mm
Sensor area 861.6mm² 28.1mm²
Sensor resolution 36MP 14MP
Anti aliasing filter
Aspect ratio 3:2 1:1, 4:3 and 16:9
Max resolution 7360 x 4912 4288 x 3216
Max native ISO 819200 6400
Minimum native ISO 100 80
RAW data
Autofocusing
Manual focus
Touch to focus
Autofocus continuous
Autofocus single
Autofocus tracking
Selective autofocus
Autofocus center weighted
Multi area autofocus
Autofocus live view
Face detection focus
Contract detection focus
Phase detection focus
Number of focus points 33 9
Cross focus points 25 -
Lens
Lens mount Pentax KAF4 fixed lens
Lens focal range - 28-140mm (5.0x)
Max aperture - f/3.5-5.5
Macro focus distance - 1cm
Amount of lenses 151 -
Focal length multiplier 1 5.8
Screen
Range of screen Fully Articulated Fixed Type
Screen size 3.2 inches 2.7 inches
Resolution of screen 1,037k dot 230k dot
Selfie friendly
Liveview
Touch function
Screen technology - TFT color LCD with Anti-reflective coating
Viewfinder Information
Viewfinder type Optical (pentaprism) None
Viewfinder coverage 100 percent -
Viewfinder magnification 0.7x -
Features
Minimum shutter speed 30 secs 4 secs
Fastest shutter speed 1/8000 secs 1/1500 secs
Continuous shutter speed 4.4 frames/s 1.0 frames/s
Shutter priority
Aperture priority
Expose Manually
Exposure compensation Yes -
Change white balance
Image stabilization
Built-in flash
Flash range no built-in flash 3.90 m
Flash settings Auto Flash Discharge, Auto Flash + Red-eye Reduction, Flash On, Flash On + Red-eye Reduction, Slow-speed Sync, Slow-speed Sync + Red-eye, P-TTL, Trailing Curtain Sync, Contrast-control-sync, High-speed sync, Wireless sync Auto, On, Off, Red-eye, Soft
External flash
AE bracketing
White balance bracketing
Fastest flash sync 1/200 secs -
Exposure
Multisegment metering
Average metering
Spot metering
Partial metering
AF area metering
Center weighted metering
Video features
Supported video resolutions 1920 x 1080 (60i, 50i, 30p, 25p, 24p), 1280 x 720 (60p, 50p) 1280 x 720 (30, 15 fps), 640 x 480 (30, 15 fps), 320 x 240 (30, 15 fps)
Max video resolution 1920x1080 1280x720
Video data format MPEG-4, H.264 Motion JPEG
Mic jack
Headphone jack
Connectivity
Wireless Auto Flash Discharge, Auto Flash + Red-eye Reduction, Flash On, Flash On + Red-eye Reduction, Slow-speed Sync, Slow-speed Sync + Red-eye, P-TTL, Trailing Curtain Sync, Contrast-control-sync, High-speed sync, Wireless sync None
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS Built-in None
Physical
Environmental seal
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 1010 gr (2.23 lb) 157 gr (0.35 lb)
Dimensions 137 x 110 x 86mm (5.4" x 4.3" x 3.4") 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 670 photos 260 photos
Battery form Battery Pack Battery Pack
Battery model D-LI90 D-LI92
Self timer Yes (2 or 12 sec, custom) Yes (2 or 10 sec)
Time lapse shooting
Storage media Dual SD/SDHC/SDXC (UHS-I) SD/SDHC/SDXC, Internal
Storage slots Two Single
Launch price $1,737 $174