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Pentax K-3 II vs Pentax K-S1

Portability
59
Imaging
66
Features
84
Overall
73
Pentax K-3 II front
 
Pentax K-S1 front
Portability
69
Imaging
63
Features
70
Overall
65

Pentax K-3 II vs Pentax K-S1 Key Specs

Pentax K-3 II
(Full Review)
  • 24MP - APS-C Sensor
  • 3.2" Fixed Display
  • ISO 100 - 51200
  • Sensor based Image Stabilization
  • No Anti-Alias Filter
  • 1/8000s Maximum Shutter
  • 1920 x 1080 video
  • Pentax KAF2 Mount
  • 800g - 131 x 100 x 77mm
  • Launched April 2015
  • Old Model is Pentax K-3
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
  • Released August 2014
  • Newer Model is Pentax K-S2
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Pentax K-3 II vs Pentax K-S1 Overview

Its time to take a more detailed look at the Pentax K-3 II vs Pentax K-S1, both Advanced DSLR digital cameras and they are both created by Pentax. The sensor resolution of the K-3 II (24MP) and the K-S1 (20MP) is fairly similar and both cameras have the same sensor size (APS-C).

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The K-3 II was introduced 8 months after the K-S1 which means that they are of a similar generation. Both cameras have the same body design (Mid-size SLR).

Before delving into a in depth comparison, here is a simple summation of how the K-3 II matches up against the K-S1 when considering portability, imaging, features and an overall mark.

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Reasons to pick Pentax K-3 II over the Pentax K-S1

 K-3 II K-S1 
ReleasedApril 2015August 2014Newer by 8 months
Display dimensions3.2"3"Larger display (+0.2")
Display resolution1037k921kSharper display (+116k dot)

Reasons to pick Pentax K-S1 over the Pentax K-3 II

 K-S1 K-3 II 

Common features in the Pentax K-3 II and Pentax K-S1

 K-3 II K-S1 
Manual focus Dial exact focus
Display typeFixed Fixed Fixed display
Selfie screen Absent selfie screen
Touch friendly display Absent Touch friendly display

Pentax K-3 II vs Pentax K-S1 Physical Comparison

If you are planning to travel with your camera, you are going to need to take into account its weight and dimensions. The Pentax K-3 II has outside dimensions of 131mm x 100mm x 77mm (5.2" x 3.9" x 3.0") along with a weight of 800 grams (1.76 lbs) and the Pentax K-S1 has dimensions of 121mm x 93mm x 70mm (4.8" x 3.7" x 2.8") with a weight of 558 grams (1.23 lbs).

Check out the Pentax K-3 II vs Pentax K-S1 in the new Camera and Lens Size Comparison Tool. Camera Size Comparison with Lenses

Always remember, the weight of an Interchangeable Lens Camera will differ based on the lens you are utilising at the time. Below is a front view measurements comparison of the K-3 II compared to the K-S1.

Pentax K-3 II vs Pentax K-S1 size comparison

Using size and weight, the portability grade of the K-3 II and K-S1 is 59 and 69 respectively.

Pentax K-3 II vs Pentax K-S1 top view buttons comparison

Pentax K-3 II vs Pentax K-S1 Sensor Comparison

Usually, it's tough to imagine the contrast between sensor dimensions only by reading a spec sheet. The image here will help give you a far better sense of the sensor dimensions in the K-3 II and K-S1.

As you can see, both of these cameras provide the same sensor dimensions but different megapixels. You should anticipate the Pentax K-3 II to offer you more detail using its extra 4 Megapixels. Greater resolution will let you crop images more aggressively. The younger K-3 II should have an edge in sensor tech.

Pentax K-3 II vs Pentax K-S1 sensor size comparison

Pentax K-3 II vs Pentax K-S1 Screen and ViewFinder

Pentax K-3 II vs Pentax K-S1 Screen and Viewfinder comparison
Photography Glossary

Photography Type Scores

Portrait Comparison

Pentax K-3 II Portrait photography details
Pentax K-S1 Portrait photography details
79
manual focus
sensor resolution is decent (24MP)
sensor size is nice (APS-C)
offers face detection focusing
supports RAW files
77
manual focus
megapixel count good (20 megapixels)
sensor size is good (APS-C)
features face detect focusing
saves RAW files
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Street Comparison

Street photography with Pentax K-3 II
Street photography with Pentax K-S1
69
built in image stabilization (Sensor based)
sensor size is nice (APS-C)
supports RAW files
environment sealing
above average high ISO (51,200)
no moving screen
73
has image stabilization (Sensor based)
sensor size is good (APS-C)
saves RAW files
lighter than competition (558g)
great ISO range (51,200)
screen does not articulate
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Sports Comparison

Sports photography with Pentax K-3 II
Sports photography with Pentax K-S1
76
max shutter speed is good (1/8,000 seconds)
built in image stabilization (Sensor based)
sensor resolution is decent (24 megapixels)
sensor size is nice (APS-C)
offers tracking autofocus
environment sealing
has phase detect AF
bad battery pack (720 per charge)
69
high shutter speed (1/6,000s)
has image stabilization (Sensor based)
megapixel count good (20 megapixels)
sensor size is good (APS-C)
features tracking focus
comes with phase detect AF
painfully slow continuous shooting (5.4 fps)
bad battery (410 CIPA)
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Travel Comparison

Pentax K-3 II Travel photography information
Pentax K-S1 Travel photography information
56
environment sealing
sensor resolution is decent (24MP)
bad battery pack (720 per charge)
does not have a selfie friendly screen
60
lighter than competition (558g)
megapixel count good (20MP)
has built in flash
lack of Timelapse recording
bad battery (410 CIPA)
display isn't selfie friendly
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Landscape Comparison

Pentax K-3 II Landscape photography highlights
Pentax K-S1 Landscape photography highlights
78
manual focus
change lenses (Pentax KAF2 mount)
decent sized screen (3.2 inches)
built in image stabilization (Sensor based)
sensor resolution is decent (24MP)
sensor size is nice (APS-C)
doesnt have low pass filter
above average high ISO (51,200)
supports RAW files
environment sealing
two card slots
bad battery pack (720 shots)
73
manual focus
switch lenses (Pentax KAF2 mount)
nice screen size (3")
has image stabilization (Sensor based)
megapixel count good (20MP)
sensor size is good (APS-C)
no low pass filter
great ISO range (51,200)
saves RAW files
bad battery (410 shots)
lack of Timelapse recording
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Vlogging Comparison

Vlogging with Pentax K-3 II
Vlogging with Pentax K-S1
34
built in image stabilization (Sensor based)
offers face detection focusing
high quality video (1920 x 1080 pxls)
has external mic socket
does not have a selfie friendly screen
33
has image stabilization (Sensor based)
features face detect focusing
video resolution high (1920 x 1080 pxls)
lighter than competition (558g)
display isn't selfie friendly
lack of microphone support
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Pentax K-3 II vs Pentax K-S1 Specifications

Detailed spec comparison table for Pentax K-3 II and Pentax K-S1
 Pentax K-3 IIPentax K-S1
General Information
Brand Name Pentax Pentax
Model Pentax K-3 II Pentax K-S1
Class Advanced DSLR Advanced DSLR
Launched 2015-04-23 2014-08-27
Physical type Mid-size SLR Mid-size SLR
Sensor Information
Processor Prime III Prime MII
Sensor type CMOS CMOS
Sensor size APS-C APS-C
Sensor measurements 23.5 x 15.6mm 23.5 x 15.6mm
Sensor area 366.6mm² 366.6mm²
Sensor resolution 24 megapixels 20 megapixels
Anti aliasing filter
Aspect ratio 3:2 3:2
Full resolution 6016 x 4000 5472 x 3648
Max native ISO 51200 51200
Min native ISO 100 100
RAW images
Autofocusing
Manual focus
AF touch
Continuous AF
Single AF
AF tracking
Selective AF
Center weighted AF
AF multi area
AF live view
Face detect AF
Contract detect AF
Phase detect AF
Number of focus points 27 11
Cross focus points 25 -
Lens
Lens mounting type Pentax KAF2 Pentax KAF2
Available lenses 151 151
Focal length multiplier 1.5 1.5
Screen
Type of display Fixed Type Fixed Type
Display sizing 3.2" 3"
Display resolution 1,037k dots 921k dots
Selfie friendly
Liveview
Touch function
Viewfinder Information
Viewfinder Optical (pentaprism) Optical (pentaprism)
Viewfinder coverage 100 percent 100 percent
Viewfinder magnification 0.64x 0.64x
Features
Slowest shutter speed 30s 30s
Maximum shutter speed 1/8000s 1/6000s
Continuous shooting rate 8.3 frames per second 5.4 frames per second
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes Yes
Set WB
Image stabilization
Built-in flash
Flash range no built-in flash 10.00 m (at ISO 100)
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 (available with dedicated external flash) Auto, auto + redeye, on, on + redeye reduction, slow sync, trailing curtain sync, manual
External flash
AEB
White balance bracketing
Maximum flash synchronize 1/180s -
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, 30p, 25p, 24p) 1920 x 1080 (30,25,24 fps), 1280 x 720 (60,50 fps)
Max video resolution 1920x1080 1920x1080
Video file format MPEG-4, H.264 H.264
Microphone support
Headphone support
Connectivity
Wireless Optional Eye-Fi Connected
Bluetooth
NFC
HDMI
USB USB 3.0 (5 GBit/sec) USB 2.0 (480 Mbit/sec)
GPS BuiltIn Optional
Physical
Environmental sealing
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 800 gr (1.76 lbs) 558 gr (1.23 lbs)
Physical dimensions 131 x 100 x 77mm (5.2" x 3.9" x 3.0") 121 x 93 x 70mm (4.8" x 3.7" x 2.8")
DXO scores
DXO All around score 80 78
DXO Color Depth score 23.6 23.5
DXO Dynamic range score 13.6 13.0
DXO Low light score 1106 1061
Other
Battery life 720 pictures 410 pictures
Style of battery Battery Pack Battery Pack
Battery model D-LI90 D-LI109
Self timer Yes ( 2 or 12 seconds) Yes ( 2 or 12 seconds)
Time lapse shooting
Storage type Dual SD/SDHC/SDXC SD/SDHC/SDXC
Card slots 2 Single
Retail pricing $829 $339