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Pentax K-S2 vs Pentax RZ18

Portability
64
Imaging
64
Features
82
Overall
71
Pentax K-S2 front
 
Pentax Optio RZ18 front
Portability
92
Imaging
39
Features
37
Overall
38

Pentax K-S2 vs Pentax RZ18 Key Specs

Pentax K-S2
(Full Review)
  • 20MP - APS-C Sensor
  • 3" Fully Articulated Screen
  • ISO 100 - 51200
  • Sensor based Image Stabilization
  • No Anti-Alias Filter
  • 1/6000s Maximum Shutter
  • 1920 x 1080 video
  • Pentax KAF2 Mount
  • 678g - 123 x 91 x 73mm
  • Introduced February 2015
  • Older Model is Pentax K-S1
Pentax RZ18
(Full Review)
  • 16MP - 1/2.3" Sensor
  • 3" Fixed Screen
  • ISO 80 - 6400
  • Sensor-shift Image Stabilization
  • 1280 x 720 video
  • 25-450mm (F3.5-5.9) lens
  • 178g - 97 x 61 x 33mm
  • Released September 2011
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Pentax K-S2 vs Pentax RZ18 Overview

Below, we will be analyzing the Pentax K-S2 versus Pentax RZ18, one is a Entry-Level DSLR and the latter is a Small Sensor Superzoom and both of them are manufactured by Pentax. There exists a sizeable gap among the image resolutions of the K-S2 (20MP) and RZ18 (16MP) and the K-S2 (APS-C) and RZ18 (1/2.3") use different sensor sizes.

Photography Glossary

The K-S2 was unveiled 3 years after the RZ18 which is a fairly large gap as far as camera technology is concerned. The two cameras come with different body type with the Pentax K-S2 being a Compact SLR camera and the Pentax RZ18 being a Compact camera.

Before we go straight into a thorough comparison, below is a brief view of how the K-S2 grades against the RZ18 in the way of portability, imaging, features and an overall score.

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Reasons to pick Pentax K-S2 over the Pentax RZ18

 K-S2 RZ18 
ReleasedFebruary 2015September 2011More modern by 42 months
Screen typeFully ArticulatedFixed Fully Articulating screen
Screen resolution921k460kCrisper screen (+461k dot)
Selfie screen Easy selfies

Reasons to pick Pentax RZ18 over the Pentax K-S2

 RZ18 K-S2 

Common features in the Pentax K-S2 and Pentax RZ18

 K-S2 RZ18 
Manually focus Very precise focus
Screen dimension3"3"Identical screen dimensions
Touch screen Missing Touch screen

Pentax K-S2 vs Pentax RZ18 Physical Comparison

When you are going to carry around your camera, you'll have to factor in its weight and proportions. The Pentax K-S2 comes with outer dimensions of 123mm x 91mm x 73mm (4.8" x 3.6" x 2.9") accompanied by a weight of 678 grams (1.49 lbs) while the Pentax RZ18 has measurements of 97mm x 61mm x 33mm (3.8" x 2.4" x 1.3") with a weight of 178 grams (0.39 lbs).

Check the Pentax K-S2 versus Pentax RZ18 in the all new Camera and Lens Size Comparison Tool. Camera Size Comparison with Lenses

Don't forget, the weight of an Interchangeable Lens Camera will differ depending on the lens you have at the time. Here is the front view dimensions comparison of the K-S2 against the RZ18.

Pentax K-S2 vs Pentax RZ18 size comparison

Considering dimensions and weight, the portability rating of the K-S2 and RZ18 is 64 and 92 respectively.

Pentax K-S2 vs Pentax RZ18 top view buttons comparison

Pentax K-S2 vs Pentax RZ18 Sensor Comparison

More often than not, it is very hard to visualize the contrast in sensor sizes just by going through specifications. The picture underneath may provide you a much better sense of the sensor sizes in the K-S2 and RZ18.

Plainly, both the cameras posses different megapixels and different sensor sizes. The K-S2 with its bigger sensor is going to make shooting shallower DOF easier and the Pentax K-S2 will produce more detail having an extra 4 Megapixels. Higher resolution will also let you crop photographs somewhat more aggressively. The fresher K-S2 provides an edge in sensor innovation.

Pentax K-S2 vs Pentax RZ18 sensor size comparison

Pentax K-S2 vs Pentax RZ18 Screen and ViewFinder

Pentax K-S2 vs Pentax RZ18 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Pentax K-S2 Portrait photography information
Pentax RZ18 Portrait photography information
78
manual focus
good MP (20 megapixels)
sensor size is decent (APS-C)
provides face detection focusing
saves RAW files
36
focusing manually
decent megapixels (16MP)
manual exposure not possible
no external flash support
tiny sensor size (1/2.3")
doesn't have RAW support
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Street Comparison

Pentax K-S2 as a Street photography camera
Pentax RZ18 as a Street photography camera
72
screen articulates fully
image stabilization (Sensor based)
sensor size is decent (APS-C)
saves RAW files
weather proof
good high ISO (51,200)
heavier than others in class (678 grams)
65
built in image stabilization (Sensor-shift)
environment sealing
lighter than competition in class (178 grams)
no articulating screen
tiny sensor size (1/2.3")
doesn't have RAW support
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Sports Comparison

Pentax K-S2 as a Sports photography camera
Pentax RZ18 as a Sports photography camera
70
max shutter speed is good (1/6,000 seconds)
image stabilization (Sensor based)
good MP (20MP)
sensor size is decent (APS-C)
provides tracking autofocus
weather proof
supports phase detect AF
continuous shooting slow (5.4 fps)
not so great battery (410 CIPA)
47
incredible zoom range (25-450mm 18.0 x zoom)
built in image stabilization (Sensor-shift)
decent megapixels (16 megapixels)
supports tracking focus
environment sealing
painfully slow continuous shooting (1.0 frames/s)
no shutter priority mode
tiny sensor size (1/2.3")
doesn't have phase detect autofocus
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Travel Comparison

Pentax K-S2 as a Travel photography camera
Pentax RZ18 as a Travel photography camera
65
weather proof
good MP (20 megapixels)
has built in flash
selfie friendly screen
not so great battery (410 CIPA)
heavier than others in class (678g)
71
lighter than competition in class (178 grams)
environment sealing
decent megapixels (16MP)
flash built-in
pretty wide (25mm)
great reach (450mm)
does not have Timelapse recording
screen is not selfie friendly
somewhat slow maximum aperture (f3.5)
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Landscape Comparison

Pentax K-S2 Landscape photography features
Pentax RZ18 Landscape photography features
77
manual focus
switch lenses (Pentax KAF2 mount)
screen size is good (3 inch)
image stabilization (Sensor based)
good MP (20MP)
sensor size is decent (APS-C)
does not have anti aliasing filter
good high ISO (51,200)
saves RAW files
weather proof
not so great battery (410 CIPA)
49
focusing manually
pretty wide (25mm)
decent sized screen (3 inch)
built in image stabilization (Sensor-shift)
decent megapixels (16MP)
environment sealing
fixed lens (fixed lens mount)
somewhat slow maximum aperture (f3.5)
manual exposure not possible
tiny sensor size (1/2.3")
doesn't have RAW support
does not have Timelapse recording
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Vlogging Comparison

Pentax K-S2 Vlogging advice
Pentax RZ18 Vlogging advice
71
selfie friendly screen
image stabilization (Sensor based)
provides face detection focusing
high quality video (1920 x 1080 pxls)
comes with external mic jack
heavier than others in class (678g)
30
pretty wide (25mm)
built in image stabilization (Sensor-shift)
lighter than competition in class (178 grams)
somewhat slow maximum aperture (f3.5)
screen is not selfie friendly
low video resolution (1280 x 720 resolution)
does not have microphone jack
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Pentax K-S2 vs Pentax RZ18 Specifications

Detailed spec comparison table for Pentax K-S2 and Pentax RZ18
 Pentax K-S2Pentax Optio RZ18
General Information
Company Pentax Pentax
Model type Pentax K-S2 Pentax Optio RZ18
Category Entry-Level DSLR Small Sensor Superzoom
Introduced 2015-02-10 2011-09-12
Body design Compact SLR Compact
Sensor Information
Processor PRIME MII -
Sensor type CMOS CCD
Sensor size APS-C 1/2.3"
Sensor measurements 23.5 x 15.6mm 6.08 x 4.56mm
Sensor surface area 366.6mm² 27.7mm²
Sensor resolution 20 megapixels 16 megapixels
Anti alias filter
Aspect ratio 3:2 1:1, 4:3 and 16:9
Full resolution 5472 x 3648 4608 x 3456
Max native ISO 51200 6400
Minimum native ISO 100 80
RAW support
Autofocusing
Manual focusing
Touch to focus
AF continuous
Single AF
AF tracking
AF selectice
Center weighted AF
Multi area AF
Live view AF
Face detection focusing
Contract detection focusing
Phase detection focusing
Total focus points 11 9
Lens
Lens support Pentax KAF2 fixed lens
Lens zoom range - 25-450mm (18.0x)
Highest aperture - f/3.5-5.9
Macro focusing distance - 4cm
Available lenses 151 -
Focal length multiplier 1.5 5.9
Screen
Range of screen Fully Articulated Fixed Type
Screen size 3 inches 3 inches
Resolution of screen 921 thousand dot 460 thousand dot
Selfie friendly
Liveview
Touch screen
Screen tech - TFT color LCD with Anti-reflective coating
Viewfinder Information
Viewfinder type Optical (pentaprism) None
Viewfinder coverage 100% -
Viewfinder magnification 0.64x -
Features
Slowest shutter speed 30 seconds 4 seconds
Maximum shutter speed 1/6000 seconds 1/2000 seconds
Continuous shooting speed 5.4fps 1.0fps
Shutter priority
Aperture priority
Manual exposure
Exposure compensation Yes -
Set WB
Image stabilization
Integrated flash
Flash distance 12.00 m (at ISO 100) 2.80 m
Flash modes Auto, auto w/redeye reduction, flash on, flash on + redeye reduction, slow sync, trailing curtain sync, manual flash Auto, On, Off, Red-eye, Soft
External flash
AE bracketing
WB bracketing
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Supported video resolutions 1920 x 1080 (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 format MPEG-4, H.264 Motion JPEG
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 Optional None
Physical
Environmental seal
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 678g (1.49 lbs) 178g (0.39 lbs)
Dimensions 123 x 91 x 73mm (4.8" x 3.6" x 2.9") 97 x 61 x 33mm (3.8" x 2.4" x 1.3")
DXO scores
DXO All around rating not tested not tested
DXO Color Depth rating not tested not tested
DXO Dynamic range rating not tested not tested
DXO Low light rating not tested not tested
Other
Battery life 410 photographs -
Battery format Battery Pack -
Battery ID D-LI109 D-LI92
Self timer Yes (2 or 12 secs) Yes (2 or 10 sec)
Time lapse shooting
Storage media SD/SDHC/SDXC SD/SDHC/SDXC, Internal
Storage slots 1 1
Launch cost $581 $210