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Olympus TG-870 vs Pentax K-3

Portability
91
Imaging
41
Features
46
Overall
43
Olympus Stylus Tough TG-870 front
 
Pentax K-3 front
Portability
59
Imaging
65
Features
85
Overall
73

Olympus TG-870 vs Pentax K-3 Key Specs

Olympus TG-870
(Full Review)
  • 16MP - 1/2.3" Sensor
  • 3" Tilting Screen
  • ISO 125 - 6400 (Bump to 12800)
  • Optical Image Stabilization
  • 1920 x 1080 video
  • 21-105mm (F3.5-5.7) lens
  • 221g - 113 x 64 x 28mm
  • Launched January 2016
  • Succeeded the Olympus TG-860
Pentax K-3
(Full Review)
  • 24MP - APS-C Sensor
  • 3.2" Fixed Display
  • ISO 100 - 51200
  • Sensor based Image Stabilization
  • No Anti-Alias Filter
  • 1/8000s Max Shutter
  • 1920 x 1080 video
  • Pentax KAF2 Mount
  • 800g - 131 x 100 x 77mm
  • Introduced April 2014
  • Updated by Pentax K-3 II
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Olympus TG-870 vs Pentax K-3 Overview

Lets take a more detailed look at the Olympus TG-870 vs Pentax K-3, one is a Ultracompact and the other is a Advanced DSLR by rivals Olympus and Pentax. There is a big difference between the sensor resolutions of the TG-870 (16MP) and K-3 (24MP) and the TG-870 (1/2.3") and K-3 (APS-C) come with totally different sensor dimensions.

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The TG-870 was announced 22 months after the K-3 making the cameras a generation away from each other. Both the cameras offer different body type with the Olympus TG-870 being a Ultracompact camera and the Pentax K-3 being a Mid-size SLR camera.

Before going straight into a in-depth comparison, below is a concise highlight of how the TG-870 grades vs the K-3 in regards to portability, imaging, features and an overall mark.

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Reasons to pick Olympus TG-870 over the Pentax K-3

 TG-870 K-3 
IntroducedJanuary 2016April 2014Newer by 22 months
Display typeTiltingFixed Tilting display

Reasons to pick Pentax K-3 over the Olympus TG-870

 K-3 TG-870 
Focus manually Very precise focus
Display sizing3.2"3"Larger display (+0.2")
Display resolution1037k921kCrisper display (+116k dot)

Common features in the Olympus TG-870 and Pentax K-3

 TG-870 K-3 
Selfie screen Neither comes with selfie screen
Touch friendly display Neither comes with Touch friendly display

Olympus TG-870 vs Pentax K-3 Physical Comparison

For anybody who is looking to travel with your camera, you're going to have to consider its weight and volume. The Olympus TG-870 comes with outer dimensions of 113mm x 64mm x 28mm (4.4" x 2.5" x 1.1") having a weight of 221 grams (0.49 lbs) and the Pentax K-3 has sizing of 131mm x 100mm x 77mm (5.2" x 3.9" x 3.0") along with a weight of 800 grams (1.76 lbs).

See the Olympus TG-870 vs Pentax K-3 in the latest Camera and Lens Size Comparison Tool. Camera Size Comparison with Lenses

Keep in mind, the weight of an Interchangeable Lens Camera will vary based on the lens you have during that time. Underneath is the front view overall size comparison of the TG-870 versus the K-3.

Olympus TG-870 vs Pentax K-3 size comparison

Taking into account size and weight, the portability rating of the TG-870 and K-3 is 91 and 59 respectively.

Olympus TG-870 vs Pentax K-3 top view buttons comparison

Olympus TG-870 vs Pentax K-3 Sensor Comparison

Generally, its hard to envision the contrast between sensor dimensions only by looking at specs. The pic underneath will give you a clearer sense of the sensor dimensions in the TG-870 and K-3.

As you can plainly see, the 2 cameras offer different megapixel count and different sensor dimensions. The TG-870 with its tinier sensor will make getting shallower DOF harder and the Pentax K-3 will resolve greater detail with its extra 8 Megapixels. Greater resolution can also allow you to crop pics a little more aggressively. The more recent TG-870 will have a benefit in sensor tech.

Olympus TG-870 vs Pentax K-3 sensor size comparison

Olympus TG-870 vs Pentax K-3 Screen and ViewFinder

Olympus TG-870 vs Pentax K-3 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Olympus TG-870 Portrait photography information
Pentax K-3 Portrait photography information
36
megapixel count decent (16MP)
supports face detection focusing
no manual focus
no manual control
no external flash support
sensor size is very small (1/2.3")
no RAW format
79
has manual focus
decent MP (24 megapixels)
sensor size is nice (APS-C)
supports face detect autofocus
saves RAW files
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Street Comparison

Olympus TG-870 Street photography information
Pentax K-3 Street photography information
65
tilting screen
has image stabilization (Optical)
weather proof
sensor size is very small (1/2.3")
no RAW format
more heavy than competition in class (221g)
69
built in image stabilization (Sensor based)
sensor size is nice (APS-C)
saves RAW files
weather sealing
good high ISO (51,200)
no articulating screen
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Sports Comparison

Olympus TG-870 Sports photography features
Pentax K-3 Sports photography features
51
has image stabilization (Optical)
megapixel count decent (16MP)
supports tracking autofocus
weather proof
good battery power (300 CIPA)
no shutter priority mode
sensor size is very small (1/2.3")
no phase detect AF
76
high shutter speed (1/8,000 seconds)
built in image stabilization (Sensor based)
decent MP (24MP)
sensor size is nice (APS-C)
supports tracking focus
weather sealing
supports phase detect autofocus
not so great battery (560 shots)
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Travel Comparison

Olympus TG-870 Travel photography information
Pentax K-3 Travel photography information
69
good battery power (300 per charge)
weather proof
megapixel count decent (16 megapixels)
built-in flash
reasonably wide (21mm)
more heavy than competition in class (221g)
doesn't contain selfie friendly screen
somewhat slow maximum aperture (f3.5)
60
weather sealing
decent MP (24 megapixels)
flash built-in
not so great battery (560 shots)
screen isn't selfie friendly
Photography Glossary

Landscape Comparison

Olympus TG-870 Landscape photography information
Pentax K-3 Landscape photography information
50
reasonably wide (21mm)
pretty good screen size (3")
has image stabilization (Optical)
megapixel count decent (16MP)
weather proof
good battery power (300 shots)
no manual focus
lens is fixed (fixed lens mount)
somewhat slow maximum aperture (f3.5)
no manual control
sensor size is very small (1/2.3")
no RAW format
77
has manual focus
change lenses (Pentax KAF2 mount)
nice screen size (3.2 inch)
built in image stabilization (Sensor based)
decent MP (24 megapixels)
sensor size is nice (APS-C)
doesnt have anti-alias filter
good high ISO (51,200)
saves RAW files
weather sealing
has dual storage slots
not so great battery (560 shots)
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Vlogging Comparison

Olympus TG-870 Vlogging features
Pentax K-3 Vlogging features
32
reasonably wide (21mm)
has image stabilization (Optical)
supports face detection focusing
video res high (1920 x 1080 pixels)
somewhat slow maximum aperture (f3.5)
doesn't contain selfie friendly screen
missing external microphone jack
more heavy than competition in class (221 grams)
34
built in image stabilization (Sensor based)
supports face detect autofocus
video resolution high (1920 x 1080 pxls)
comes with mic jack
screen isn't selfie friendly
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Olympus TG-870 vs Pentax K-3 Specifications

Detailed spec comparison table for Olympus TG-870 and Pentax K-3
 Olympus Stylus Tough TG-870Pentax K-3
General Information
Brand Olympus Pentax
Model Olympus Stylus Tough TG-870 Pentax K-3
Class Ultracompact Advanced DSLR
Launched 2016-01-06 2014-04-10
Body design Ultracompact Mid-size SLR
Sensor Information
Processor TruePic VII Prime III
Sensor type BSI-CMOS CMOS
Sensor size 1/2.3" APS-C
Sensor dimensions 6.17 x 4.55mm 23.5 x 15.6mm
Sensor surface area 28.1mm² 366.6mm²
Sensor resolution 16MP 24MP
Anti aliasing filter
Aspect ratio 1:1, 4:3, 3:2 and 16:9 3:2
Maximum resolution 4608 x 3456 6016 x 4000
Maximum native ISO 6400 51200
Maximum boosted ISO 12800 -
Minimum native ISO 125 100
RAW images
Autofocusing
Focus manually
Touch to focus
Continuous AF
Single AF
Tracking AF
AF selectice
Center weighted AF
AF multi area
Live view AF
Face detection focusing
Contract detection focusing
Phase detection focusing
Number of focus points - 27
Cross focus points - 25
Lens
Lens mount fixed lens Pentax KAF2
Lens focal range 21-105mm (5.0x) -
Max aperture f/3.5-5.7 -
Macro focus distance 1cm -
Available lenses - 151
Crop factor 5.8 1.5
Screen
Range of screen Tilting Fixed Type
Screen diagonal 3 inch 3.2 inch
Resolution of screen 921 thousand dot 1,037 thousand dot
Selfie friendly
Liveview
Touch functionality
Screen technology - TFT LCD monitor
Viewfinder Information
Viewfinder type None Optical (pentaprism)
Viewfinder coverage - 100%
Viewfinder magnification - 0.64x
Features
Slowest shutter speed 4s 30s
Maximum shutter speed 1/2000s 1/8000s
Continuous shooting speed 7.0 frames/s 8.0 frames/s
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation - Yes
Custom WB
Image stabilization
Built-in flash
Flash range 4.00 m (at ISO 1600) 13.00 m (at ISO 100)
Flash options Auto, redeye reduction, fill flash, off, LED illuminator Auto, on, off, red-eye, slow sync, slow sync + red-eye, trailing curtain sync, high speed, wireless, manual
External flash
AE bracketing
White balance bracketing
Maximum flash sync - 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 (60p), 1280 x 720 (60p), 640 x 480 (60p) 1920 x 1080 (60i, 50i, 30p, 25p, 24p), 1280 x 720 (60p, 50p, 30p, 25p, 24p)
Maximum video resolution 1920x1080 1920x1080
Video file format MPEG-4, H.264 MPEG-4, H.264
Mic input
Headphone input
Connectivity
Wireless Built-In None
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 3.0 (5 GBit/sec)
GPS BuiltIn Optional
Physical
Environment seal
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 221 grams (0.49 lb) 800 grams (1.76 lb)
Dimensions 113 x 64 x 28mm (4.4" x 2.5" x 1.1") 131 x 100 x 77mm (5.2" x 3.9" x 3.0")
DXO scores
DXO All around score not tested 80
DXO Color Depth score not tested 23.7
DXO Dynamic range score not tested 13.4
DXO Low light score not tested 1216
Other
Battery life 300 images 560 images
Battery format Battery Pack Battery Pack
Battery model Li-50B D-LI90
Self timer Yes (2 or 10 sec, custom) Yes ( 2 or 12 seconds)
Time lapse feature
Storage media SD/SDHC/SDXC, Internal Dual SD/SDHC/SDXC
Storage slots One 2
Cost at launch $280 $639