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Olympus TG-870 vs Pentax K-x

Portability
91
Imaging
41
Features
46
Overall
43
Olympus Stylus Tough TG-870 front
 
Pentax K-x front
Portability
69
Imaging
52
Features
47
Overall
50

Olympus TG-870 vs Pentax K-x Key Specs

Olympus TG-870
(Full Review)
  • 16MP - 1/2.3" Sensor
  • 3" Tilting Screen
  • ISO 125 - 6400 (Push to 12800)
  • Optical Image Stabilization
  • 1920 x 1080 video
  • 21-105mm (F3.5-5.7) lens
  • 221g - 113 x 64 x 28mm
  • Introduced January 2016
  • Replaced the Olympus TG-860
Pentax K-x
(Full Review)
  • 12MP - APS-C Sensor
  • 2.7" Fixed Screen
  • ISO 100 - 6400 (Boost to 12800)
  • Sensor based Image Stabilization
  • 1/6000s Maximum Shutter
  • 1280 x 720 video
  • Pentax KAF2 Mount
  • 580g - 123 x 92 x 68mm
  • Revealed December 2009
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Olympus TG-870 vs Pentax K-x Overview

Lets take a more detailed look at the Olympus TG-870 versus Pentax K-x, former being a Ultracompact while the latter is a Entry-Level DSLR by rivals Olympus and Pentax. There is a sizable difference between the resolutions of the TG-870 (16MP) and K-x (12MP) and the TG-870 (1/2.3") and K-x (APS-C) use different sensor measurements.

Photography Glossary

The TG-870 was manufactured 6 years later than the K-x and that is quite a significant difference as far as tech is concerned. Each of the cameras offer different body type with the Olympus TG-870 being a Ultracompact camera and the Pentax K-x being a Compact SLR camera.

Before diving in to a comprehensive comparison, below is a brief overview of how the TG-870 grades versus the K-x for portability, imaging, features and an overall rating.

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Reasons to pick Olympus TG-870 over the Pentax K-x

 TG-870 K-x 
RevealedJanuary 2016December 2009Fresher by 74 months
Screen typeTiltingFixed Tilting screen
Screen sizing3"2.7"Bigger screen (+0.3")
Screen resolution921k230kClearer screen (+691k dot)

Reasons to pick Pentax K-x over the Olympus TG-870

 K-x TG-870 
Focus manually Dial exact focusing

Common features in the Olympus TG-870 and Pentax K-x

 TG-870 K-x 
Selfie screen Missing selfie screen
Touch screen Neither provides Touch screen

Olympus TG-870 vs Pentax K-x Physical Comparison

For anyone who is going to carry your camera regularly, you need to factor its weight and volume. The Olympus TG-870 provides physical measurements of 113mm x 64mm x 28mm (4.4" x 2.5" x 1.1") with a weight of 221 grams (0.49 lbs) while the Pentax K-x has sizing of 123mm x 92mm x 68mm (4.8" x 3.6" x 2.7") along with a weight of 580 grams (1.28 lbs).

Check the Olympus TG-870 versus Pentax K-x in our brand new Camera plus Lens Size Comparison Tool. Camera Size Comparison with Lenses

Always remember, the weight of an ILC will vary based on the lens you are utilizing at the time. Following is the front view sizing comparison of the TG-870 against the K-x.

Olympus TG-870 vs Pentax K-x size comparison

Using size and weight, the portability score of the TG-870 and K-x is 91 and 69 respectively.

Olympus TG-870 vs Pentax K-x top view buttons comparison

Olympus TG-870 vs Pentax K-x Sensor Comparison

Generally, it can be difficult to imagine the difference between sensor sizing simply by looking at technical specs. The photograph below should provide you a much better sense of the sensor sizing in the TG-870 and K-x.

As you can tell, both cameras enjoy different megapixel count and different sensor sizing. The TG-870 because of its tinier sensor is going to make getting shallower depth of field harder and the Olympus TG-870 will give extra detail due to its extra 4MP. Higher resolution can also make it easier to crop photographs far more aggressively. The more modern TG-870 provides an edge with regard to sensor innovation.

Olympus TG-870 vs Pentax K-x sensor size comparison

Olympus TG-870 vs Pentax K-x Screen and ViewFinder

Olympus TG-870 vs Pentax K-x Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Olympus TG-870 Portrait photography details
Pentax K-x Portrait photography details
36
resolution is good (16 megapixels)
provides face detect focus
focusing manually not possible
manual mode not available
external flash not possible
sensor size is tiny (1/2.3")
has no RAW format
63
focusing manually
good sensor size (APS-C)
supports face detect autofocus
delivers RAW files
low resolution sensor (12 megapixels)
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Street Comparison

Olympus TG-870 as a Street photography camera
Pentax K-x as a Street photography camera
65
has a tilting screen
built in image stabilization (Optical)
weather sealing
sensor size is tiny (1/2.3")
has no RAW format
heavier than others in class (221g)
67
image stabilization (Sensor based)
good sensor size (APS-C)
delivers RAW files
screen is fixed
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Sports Comparison

Sports photography with Olympus TG-870
Sports photography with Pentax K-x
51
built in image stabilization (Optical)
resolution is good (16MP)
provides tracking focus
weather sealing
great battery pack (300 per charge)
lack of shutter priority mode
sensor size is tiny (1/2.3")
has no phase detect auto focus
61
max shutter speed is good (1/6,000s)
image stabilization (Sensor based)
good sensor size (APS-C)
great battery life (1,900 shots)
comes with phase detect autofocus
very slow continuous shooting (5.0 frames/s)
low resolution sensor (12MP)
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Travel Comparison

Travel photography with Olympus TG-870
Travel photography with Pentax K-x
69
great battery pack (300 per charge)
weather sealing
resolution is good (16MP)
has built in flash
fairly wide (21mm)
heavier than others in class (221g)
does not feature selfie friendly display
somewhat slow maximum aperture (f3.5)
54
great battery life (1,900 per charge)
built-in flash
doesn't have Time Lapse mode
low resolution sensor (12 megapixels)
screen isn't selfie friendly
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Landscape Comparison

Landscape photography with Olympus TG-870
Landscape photography with Pentax K-x
50
fairly wide (21mm)
good sized screen (3 inches)
built in image stabilization (Optical)
resolution is good (16 megapixels)
weather sealing
great battery pack (300 shots)
focusing manually not possible
can't swap lens (fixed lens mount)
somewhat slow maximum aperture (f3.5)
manual mode not available
sensor size is tiny (1/2.3")
has no RAW format
61
focusing manually
change lenses (Pentax KAF2 mount)
image stabilization (Sensor based)
good sensor size (APS-C)
delivers RAW files
great battery life (1,900 CIPA)
tiny screen (2.7")
low resolution sensor (12MP)
doesn't have Time Lapse mode
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Vlogging Comparison

Olympus TG-870 Vlogging advice
Pentax K-x Vlogging advice
32
fairly wide (21mm)
built in image stabilization (Optical)
provides face detect focus
video resolution high (1920 x 1080 resolution)
somewhat slow maximum aperture (f3.5)
does not feature selfie friendly display
doesn't have mic jack
heavier than others in class (221g)
27
image stabilization (Sensor based)
supports face detect autofocus
screen isn't selfie friendly
video resolution low (1280 x 720 pixels)
doesn't have mic port
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Olympus TG-870 vs Pentax K-x Specifications

Detailed spec comparison table for Olympus TG-870 and Pentax K-x
 Olympus Stylus Tough TG-870Pentax K-x
General Information
Make Olympus Pentax
Model Olympus Stylus Tough TG-870 Pentax K-x
Class Ultracompact Entry-Level DSLR
Introduced 2016-01-06 2009-12-23
Body design Ultracompact Compact SLR
Sensor Information
Processor Chip TruePic VII Prime
Sensor type BSI-CMOS CMOS
Sensor size 1/2.3" APS-C
Sensor dimensions 6.17 x 4.55mm 23.6 x 15.8mm
Sensor surface area 28.1mm² 372.9mm²
Sensor resolution 16 megapixel 12 megapixel
Anti aliasing filter
Aspect ratio 1:1, 4:3, 3:2 and 16:9 3:2
Max resolution 4608 x 3456 4288 x 2848
Max native ISO 6400 6400
Max enhanced ISO 12800 12800
Lowest native ISO 125 100
RAW data
Autofocusing
Focus manually
Touch focus
Autofocus continuous
Single autofocus
Autofocus tracking
Selective autofocus
Autofocus center weighted
Multi area autofocus
Autofocus live view
Face detection autofocus
Contract detection autofocus
Phase detection autofocus
Number of focus points - 11
Lens
Lens mount fixed lens Pentax KAF2
Lens focal range 21-105mm (5.0x) -
Highest aperture f/3.5-5.7 -
Macro focus range 1cm -
Total lenses - 151
Crop factor 5.8 1.5
Screen
Screen type Tilting Fixed Type
Screen sizing 3" 2.7"
Screen resolution 921 thousand dot 230 thousand dot
Selfie friendly
Liveview
Touch operation
Screen technology - TFT LCD monitor
Viewfinder Information
Viewfinder None Optical (pentamirror)
Viewfinder coverage - 96%
Viewfinder magnification - 0.57x
Features
Minimum shutter speed 4s 30s
Fastest shutter speed 1/2000s 1/6000s
Continuous shutter speed 7.0 frames/s 5.0 frames/s
Shutter priority
Aperture priority
Expose Manually
Exposure compensation - Yes
Set white balance
Image stabilization
Built-in flash
Flash range 4.00 m (at ISO 1600) 16.00 m
Flash settings Auto, redeye reduction, fill flash, off, LED illuminator Auto, On, Off, Red-Eye, Slow Sync, Rear curtain, Wireless
Hot shoe
AE bracketing
White balance bracketing
Fastest flash sync - 1/180s
Exposure
Multisegment metering
Average metering
Spot metering
Partial metering
AF area metering
Center weighted metering
Video features
Video resolutions 1920 x 1080 (60p), 1280 x 720 (60p), 640 x 480 (60p) 1280 x 720 (24 fps), 640 x 416 (24 fps)
Max video resolution 1920x1080 1280x720
Video format MPEG-4, H.264 Motion JPEG
Mic jack
Headphone jack
Connectivity
Wireless Built-In None
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS BuiltIn None
Physical
Environment seal
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 221 grams (0.49 pounds) 580 grams (1.28 pounds)
Dimensions 113 x 64 x 28mm (4.4" x 2.5" x 1.1") 123 x 92 x 68mm (4.8" x 3.6" x 2.7")
DXO scores
DXO Overall score not tested 72
DXO Color Depth score not tested 22.8
DXO Dynamic range score not tested 12.5
DXO Low light score not tested 811
Other
Battery life 300 pictures 1900 pictures
Type of battery Battery Pack Battery Pack
Battery model Li-50B 4 x AA
Self timer Yes (2 or 10 sec, custom) Yes (2 or 12 sec)
Time lapse shooting
Type of storage SD/SDHC/SDXC, Internal SD/SDHC card
Storage slots One One
Cost at release $280 $600