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Olympus 550WP vs Pentax K-S1

Portability
94
Imaging
33
Features
17
Overall
26
Olympus Stylus 550WP front
 
Pentax K-S1 front
Portability
69
Imaging
63
Features
70
Overall
65

Olympus 550WP vs Pentax K-S1 Key Specs

Olympus 550WP
(Full Review)
  • 10MP - 1/2.3" Sensor
  • 2.5" Fixed Display
  • ISO 64 - 1600
  • Digital Image Stabilization
  • 640 x 480 video
  • 38-114mm (F3.5-5.0) lens
  • 167g - 94 x 62 x 22mm
  • Introduced January 2009
  • Additionally referred to as mju 550WP
Pentax K-S1
(Full Review)
  • 20MP - APS-C Sensor
  • 3" Fixed Screen
  • 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
  • Replacement is Pentax K-S2
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Olympus 550WP vs Pentax K-S1 Overview

On this page, we will be looking at the Olympus 550WP versus Pentax K-S1, one being a Small Sensor Compact and the latter is a Advanced DSLR by rivals Olympus and Pentax. There is a huge difference between the image resolutions of the 550WP (10MP) and K-S1 (20MP) and the 550WP (1/2.3") and K-S1 (APS-C) boast totally different sensor measurements.

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The 550WP was introduced 6 years earlier than the K-S1 and that is quite a significant gap as far as tech is concerned. The two cameras have different body design with the Olympus 550WP being a Compact camera and the Pentax K-S1 being a Mid-size SLR camera.

Before diving straight to a full comparison, here is a short synopsis of how the 550WP matches up versus the K-S1 when considering portability, imaging, features and an overall rating.

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Reasons to pick Olympus 550WP over the Pentax K-S1

 550WP K-S1 

Reasons to pick Pentax K-S1 over the Olympus 550WP

 K-S1 550WP 
AnnouncedAugust 2014January 2009Fresher by 68 months
Focus manually Dial precise focus
Screen dimensions3"2.5"Bigger screen (+0.5")
Screen resolution921k230kCrisper screen (+691k dot)

Common features in the Olympus 550WP and Pentax K-S1

 550WP K-S1 
Screen typeFixed Fixed Fixed screen
Selfie screen Neither provides selfie screen
Touch screen Neither provides Touch screen

Olympus 550WP vs Pentax K-S1 Physical Comparison

For anyone who is going to carry your camera frequently, you should take into account its weight and proportions. The Olympus 550WP provides outer dimensions of 94mm x 62mm x 22mm (3.7" x 2.4" x 0.9") having a weight of 167 grams (0.37 lbs) and the Pentax K-S1 has measurements of 121mm x 93mm x 70mm (4.8" x 3.7" x 2.8") with a weight of 558 grams (1.23 lbs).

Take a look at the Olympus 550WP versus Pentax K-S1 in the all new Camera with 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 are employing at that moment. The following is a front view proportions comparison of the 550WP against the K-S1.

Olympus 550WP vs Pentax K-S1 size comparison

Looking at size and weight, the portability rating of the 550WP and K-S1 is 94 and 69 respectively.

Olympus 550WP vs Pentax K-S1 top view buttons comparison

Olympus 550WP vs Pentax K-S1 Sensor Comparison

Oftentimes, it is very hard to visualise the difference between sensor sizing just by reading through specifications. The graphic here might give you a greater sense of the sensor sizes in the 550WP and K-S1.

To sum up, each of these cameras provide different resolutions and different sensor sizing. The 550WP with its tinier sensor will make achieving shallow DOF harder and the Pentax K-S1 will resolve more detail using its extra 10MP. Higher resolution will let you crop shots more aggressively. The older 550WP is going to be behind in sensor technology.

Olympus 550WP vs Pentax K-S1 sensor size comparison

Olympus 550WP vs Pentax K-S1 Screen and ViewFinder

Olympus 550WP vs Pentax K-S1 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Olympus 550WP Portrait photography information
Pentax K-S1 Portrait photography information
19
lack of manual focus
manual exposure not possible
can't use external flash
low megapixels (10 megapixels)
sensor size is tiny (1/2.3")
no RAW support
77
focusing manually
MP count good (20 megapixels)
decent sensor size (APS-C)
features face detect focus
saves RAW files
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Street Comparison

Street photography with Olympus 550WP
Street photography with Pentax K-S1
61
built in image stabilization (Digital)
environment proofing
no moving screen
sensor size is tiny (1/2.3")
no RAW support
73
image stabilization (Sensor based)
decent sensor size (APS-C)
saves RAW files
lighter than competition in class (558g)
great high ISO (51,200)
screen is fixed
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Sports Comparison

Olympus 550WP Sports photography information
Pentax K-S1 Sports photography information
30
built in image stabilization (Digital)
environment proofing
maximum shutter speed is a little low (1/1,000s)
no shutter priority mode
low megapixels (10 megapixels)
sensor size is tiny (1/2.3")
no phase detect AF
69
great max shutter speed (1/6,000 seconds)
image stabilization (Sensor based)
MP count good (20 megapixels)
decent sensor size (APS-C)
features tracking focus
comes with phase detect auto focus
low fps (5.4 frames/s)
bad battery (410 per charge)
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Travel Comparison

Olympus 550WP Travel photography information
Pentax K-S1 Travel photography information
55
environment proofing
has built in flash
missing Time Lapse function
low megapixels (10MP)
display is not selfie friendly
wide angle not fantastic (38mm)
somewhat slow max aperture (f3.5)
60
lighter than competition in class (558g)
MP count good (20MP)
has built in flash
lack of Timelapse function
bad battery (410 per charge)
doesn't posses selfie friendly display
Photography Glossary

Landscape Comparison

Olympus 550WP as a Landscape photography camera
Pentax K-S1 as a Landscape photography camera
30
built in image stabilization (Digital)
environment proofing
lack of manual focus
can't change lens (fixed lens mount)
wide angle not fantastic (38mm)
somewhat slow max aperture (f3.5)
screen is somewhat small (2.5 inches)
manual exposure not possible
low megapixels (10 megapixels)
sensor size is tiny (1/2.3")
no RAW support
missing Time Lapse function
73
focusing manually
switch lenses (Pentax KAF2 mount)
screen size is good (3")
image stabilization (Sensor based)
MP count good (20MP)
decent sensor size (APS-C)
does not have anti aliasing filter
great high ISO (51,200)
saves RAW files
bad battery (410 shots)
lack of Timelapse function
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Vlogging Comparison

Olympus 550WP Vlogging info
Pentax K-S1 Vlogging info
25
built in image stabilization (Digital)
wide angle not fantastic (38mm)
somewhat slow max aperture (f3.5)
display is not selfie friendly
low quality video (640 x 480 pixels)
missing mic port
33
image stabilization (Sensor based)
features face detect focus
high quality video (1920 x 1080 resolution)
lighter than competition in class (558 grams)
doesn't posses selfie friendly display
lack of microphone support
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Olympus 550WP vs Pentax K-S1 Specifications

Detailed spec comparison table for Olympus 550WP and Pentax K-S1
 Olympus Stylus 550WPPentax K-S1
General Information
Make Olympus Pentax
Model Olympus Stylus 550WP Pentax K-S1
Also called as mju 550WP -
Class Small Sensor Compact Advanced DSLR
Introduced 2009-01-07 2014-08-27
Physical type Compact Mid-size SLR
Sensor Information
Processor Chip - Prime MII
Sensor type CCD CMOS
Sensor size 1/2.3" APS-C
Sensor measurements 6.08 x 4.56mm 23.5 x 15.6mm
Sensor area 27.7mm² 366.6mm²
Sensor resolution 10MP 20MP
Anti aliasing filter
Aspect ratio 16:9, 4:3 and 3:2 3:2
Full resolution 3648 x 2736 5472 x 3648
Max native ISO 1600 51200
Minimum native ISO 64 100
RAW format
Autofocusing
Manual focus
Autofocus touch
Autofocus continuous
Single autofocus
Tracking autofocus
Autofocus selectice
Autofocus center weighted
Multi area autofocus
Live view autofocus
Face detect focus
Contract detect focus
Phase detect focus
Number of focus points - 11
Lens
Lens mount fixed lens Pentax KAF2
Lens focal range 38-114mm (3.0x) -
Largest aperture f/3.5-5.0 -
Macro focus range 7cm -
Total lenses - 151
Focal length multiplier 5.9 1.5
Screen
Display type Fixed Type Fixed Type
Display size 2.5 inch 3 inch
Display resolution 230k dots 921k dots
Selfie friendly
Liveview
Touch capability
Viewfinder Information
Viewfinder type None Optical (pentaprism)
Viewfinder coverage - 100 percent
Viewfinder magnification - 0.64x
Features
Slowest shutter speed 4s 30s
Maximum shutter speed 1/1000s 1/6000s
Continuous shooting rate - 5.4 frames/s
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation - Yes
Custom white balance
Image stabilization
Integrated flash
Flash range - 10.00 m (at ISO 100)
Flash modes Auto, Fill-in, Red-Eye reduction, Off, On Auto, auto + redeye, on, on + redeye reduction, slow sync, trailing curtain sync, manual
Hot shoe
AEB
WB bracketing
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Video resolutions 640 x 480 (30, 15 fps), 320 x 240 (30, 15 fps) 1920 x 1080 (30,25,24 fps), 1280 x 720 (60,50 fps)
Max video resolution 640x480 1920x1080
Video file format Motion JPEG H.264
Microphone support
Headphone support
Connectivity
Wireless None Eye-Fi Connected
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS None Optional
Physical
Environmental sealing
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 167 grams (0.37 pounds) 558 grams (1.23 pounds)
Physical dimensions 94 x 62 x 22mm (3.7" x 2.4" x 0.9") 121 x 93 x 70mm (4.8" x 3.7" x 2.8")
DXO scores
DXO All around score not tested 78
DXO Color Depth score not tested 23.5
DXO Dynamic range score not tested 13.0
DXO Low light score not tested 1061
Other
Battery life - 410 photos
Battery style - Battery Pack
Battery model - D-LI109
Self timer Yes (12 seconds) Yes ( 2 or 12 seconds)
Time lapse shooting
Type of storage xD-Picture Card, microSD, internal SD/SDHC/SDXC
Card slots One One
Cost at launch $399 $339