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Pentax K-S1 vs Pentax K100D S

Portability
69
Imaging
63
Features
70
Overall
65
Pentax K-S1 front
 
Pentax K100D Super front
Portability
65
Imaging
45
Features
38
Overall
42

Pentax K-S1 vs Pentax K100D S Key Specs

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
  • Revealed August 2014
  • Refreshed by Pentax K-S2
Pentax K100D S
(Full Review)
  • 6MP - APS-C Sensor
  • 2.5" Fixed Screen
  • ISO 200 - 3200
  • Sensor based Image Stabilization
  • No Video
  • Pentax KAF2 Mount
  • 646g - 129 x 91 x 71mm
  • Released June 2007
  • Replaced the Pentax K100D
  • Updated by Pentax K200D
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Pentax K-S1 vs Pentax K100D S Overview

Following is a detailed overview of the Pentax K-S1 versus Pentax K100D S, former is a Advanced DSLR while the latter is a Entry-Level DSLR and they are both sold by Pentax. There is a sizable difference between the image resolutions of the K-S1 (20MP) and K100D S (6MP) but they enjoy the exact same sensor dimensions (APS-C).

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The K-S1 was unveiled 7 years after the K100D S which is quite a significant difference as far as tech is concerned. Both of the cameras come with different body type with the Pentax K-S1 being a Mid-size SLR camera and the Pentax K100D S being a Compact SLR camera.

Before delving through a complete comparison, below is a short highlight of how the K-S1 grades against the K100D S for portability, imaging, features and an overall score.

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Reasons to pick Pentax K-S1 over the Pentax K100D S

 K-S1 K100D S 
ReleasedAugust 2014June 2007More modern by 88 months
Screen dimension3"2.5"Bigger screen (+0.5")
Screen resolution921k210kCrisper screen (+711k dot)

Reasons to pick Pentax K100D S over the Pentax K-S1

 K100D S K-S1 

Common features in the Pentax K-S1 and Pentax K100D S

 K-S1 K100D S 
Manual focus Very exact focus
Screen typeFixed Fixed Fixed screen
Selfie screen Missing selfie screen
Touch friendly screen Missing Touch friendly screen

Pentax K-S1 vs Pentax K100D S Physical Comparison

For anybody who is looking to carry around your camera, you are going to need to factor its weight and volume. The Pentax K-S1 enjoys exterior measurements of 121mm x 93mm x 70mm (4.8" x 3.7" x 2.8") along with a weight of 558 grams (1.23 lbs) and the Pentax K100D S has sizing of 129mm x 91mm x 71mm (5.1" x 3.6" x 2.8") and a weight of 646 grams (1.42 lbs).

Examine the Pentax K-S1 versus Pentax K100D S in our brand new Camera & Lens Size Comparison Tool. Camera Size Comparison with Lenses

Take into consideration, the weight of an ILC will vary depending on the lens you are utilising at that moment. Following is the front view dimensions comparison of the K-S1 versus the K100D S.

Pentax K-S1 vs Pentax K100D S size comparison

Taking into account size and weight, the portability score of the K-S1 and K100D S is 69 and 65 respectively.

Pentax K-S1 vs Pentax K100D S top view buttons comparison

Pentax K-S1 vs Pentax K100D S Sensor Comparison

Usually, it's hard to picture the contrast between sensor sizes purely by reading through a spec sheet. The picture here will help offer you a far better sense of the sensor measurements in the K-S1 and K100D S.

Clearly, the two cameras have got the exact same sensor measurements albeit different resolution. You can count on the Pentax K-S1 to give extra detail having an extra 14 Megapixels. Higher resolution will help you crop pictures much more aggressively. The younger K-S1 provides an advantage with regard to sensor innovation.

Pentax K-S1 vs Pentax K100D S sensor size comparison

Pentax K-S1 vs Pentax K100D S Screen and ViewFinder

Pentax K-S1 vs Pentax K100D S Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Pentax K-S1 Portrait photography factors
Pentax K100D S Portrait photography factors
77
focusing manually
sensor resolution is decent (20MP)
good sensor size (APS-C)
features face detection autofocus
delivers RAW files
51
has manual focus
sensor size is nice (APS-C)
exports RAW files
doesn't have liveview
resolution not great (6 megapixels)
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Street Comparison

Pentax K-S1 Street photography features
Pentax K100D S Street photography features
73
has image stabilization (Sensor based)
good sensor size (APS-C)
delivers RAW files
lighter than competition in class (558 grams)
very good ISO range (51,200)
no articulating screen
64
built in image stabilization (Sensor based)
sensor size is nice (APS-C)
exports RAW files
no articulating screen
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Sports Comparison

Pentax K-S1 as a Sports photography camera
Pentax K100D S as a Sports photography camera
69
max shutter speed is good (1/6,000s)
has image stabilization (Sensor based)
sensor resolution is decent (20 megapixels)
good sensor size (APS-C)
features tracking autofocus
supports phase detect autofocus
continuous shooting slow (5.4 frames/s)
bad battery life (410 CIPA)
47
built in image stabilization (Sensor based)
sensor size is nice (APS-C)
supports phase detect AF
doesn't have liveview
max frames per second very slow (3.0 frames/s)
resolution not great (6 megapixels)
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Travel Comparison

Pentax K-S1 Travel photography information
Pentax K100D S Travel photography information
60
lighter than competition in class (558g)
sensor resolution is decent (20 megapixels)
has built in flash
does not have Timelapse function
bad battery life (410 shots)
screen isn't selfie friendly
45
built-in flash
missing Timelapse recording
resolution not great (6 megapixels)
display isn't selfie friendly
Photography Glossary

Landscape Comparison

Pentax K-S1 Landscape photography info
Pentax K100D S Landscape photography info
73
focusing manually
swap lenses (Pentax KAF2 mount)
screen size is good (3")
has image stabilization (Sensor based)
sensor resolution is decent (20 megapixels)
good sensor size (APS-C)
doesnt have anti-alias filter
very good ISO range (51,200)
delivers RAW files
bad battery life (410 shots)
does not have Timelapse function
52
has manual focus
switch lenses (Pentax KAF2 mount)
built in image stabilization (Sensor based)
sensor size is nice (APS-C)
exports RAW files
screen is somewhat small (2.5")
doesn't have liveview
resolution not great (6 megapixels)
missing Timelapse recording
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Vlogging Comparison

Pentax K-S1 Vlogging factors
Pentax K100D S Vlogging factors
33
has image stabilization (Sensor based)
features face detection autofocus
high quality video (1920 x 1080 pixels)
lighter than competition in class (558g)
screen isn't selfie friendly
does not have external microphone port
9
no video shooting
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Pentax K-S1 vs Pentax K100D S Specifications

Detailed spec comparison table for Pentax K-S1 and Pentax K100D S
 Pentax K-S1Pentax K100D Super
General Information
Brand Pentax Pentax
Model Pentax K-S1 Pentax K100D Super
Class Advanced DSLR Entry-Level DSLR
Revealed 2014-08-27 2007-06-28
Physical type Mid-size SLR Compact SLR
Sensor Information
Chip Prime MII -
Sensor type CMOS CCD
Sensor size APS-C APS-C
Sensor measurements 23.5 x 15.6mm 23.5 x 15.7mm
Sensor area 366.6mm² 369.0mm²
Sensor resolution 20 megapixel 6 megapixel
Anti aliasing filter
Aspect ratio 3:2 3:2
Full resolution 5472 x 3648 3008 x 2008
Max native ISO 51200 3200
Minimum native ISO 100 200
RAW format
Autofocusing
Manual focus
AF touch
AF continuous
AF single
AF tracking
Selective AF
AF center weighted
Multi area AF
AF live view
Face detect AF
Contract detect AF
Phase detect AF
Number of focus points 11 11
Lens
Lens mounting type Pentax KAF2 Pentax KAF2
Amount of lenses 151 151
Focal length multiplier 1.5 1.5
Screen
Type of display Fixed Type Fixed Type
Display diagonal 3 inch 2.5 inch
Resolution of display 921 thousand dots 210 thousand dots
Selfie friendly
Liveview
Touch friendly
Viewfinder Information
Viewfinder Optical (pentaprism) Optical (pentamirror)
Viewfinder coverage 100% 96%
Viewfinder magnification 0.64x 0.57x
Features
Lowest shutter speed 30s 30s
Highest shutter speed 1/6000s 1/4000s
Continuous shooting rate 5.4 frames per sec 3.0 frames per sec
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes Yes
Change WB
Image stabilization
Built-in flash
Flash range 10.00 m (at ISO 100) -
Flash options Auto, auto + redeye, on, on + redeye reduction, slow sync, trailing curtain sync, manual Auto, On, Off, Red-eye reduction
Hot shoe
AEB
WB bracketing
Highest flash synchronize - 1/180s
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Supported video resolutions 1920 x 1080 (30,25,24 fps), 1280 x 720 (60,50 fps) -
Max video resolution 1920x1080 None
Video data format H.264 -
Microphone port
Headphone port
Connectivity
Wireless Eye-Fi Connected None
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS Optional None
Physical
Environmental sealing
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 558g (1.23 lbs) 646g (1.42 lbs)
Dimensions 121 x 93 x 70mm (4.8" x 3.7" x 2.8") 129 x 91 x 71mm (5.1" x 3.6" x 2.8")
DXO scores
DXO All around score 78 not tested
DXO Color Depth score 23.5 not tested
DXO Dynamic range score 13.0 not tested
DXO Low light score 1061 not tested
Other
Battery life 410 pictures -
Form of battery Battery Pack -
Battery model D-LI109 4 x AA
Self timer Yes ( 2 or 12 seconds) Yes (2 or 12 sec)
Time lapse recording
Storage type SD/SDHC/SDXC SD/SDHC card
Card slots One One
Retail price $339 $520