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Olympus TG-310 vs Pentax K20D

Portability
94
Imaging
37
Features
33
Overall
35
Olympus TG-310 front
 
Pentax K20D front
Portability
59
Imaging
54
Features
52
Overall
53

Olympus TG-310 vs Pentax K20D Key Specs

Olympus TG-310
(Full Review)
  • 14MP - 1/2.3" Sensor
  • 2.7" Fixed Screen
  • ISO 80 - 1600
  • Sensor-shift Image Stabilization
  • 1280 x 720 video
  • 28-102mm (F3.9-5.9) lens
  • 155g - 96 x 63 x 23mm
  • Announced January 2011
Pentax K20D
(Full Review)
  • 15MP - APS-C Sensor
  • 2.7" Fixed Display
  • ISO 100 - 3200 (Bump to 6400)
  • Sensor based Image Stabilization
  • No Video
  • Pentax KAF2 Mount
  • 800g - 142 x 101 x 70mm
  • Launched June 2008
  • Previous Model is Pentax K10D
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Olympus TG-310 vs Pentax K20D Overview

In this write-up, we are contrasting the Olympus TG-310 versus Pentax K20D, one is a Waterproof and the other is a Advanced DSLR by rivals Olympus and Pentax. The sensor resolution of the TG-310 (14MP) and the K20D (15MP) is fairly well matched but the TG-310 (1/2.3") and K20D (APS-C) enjoy different sensor size.

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The TG-310 was manufactured 2 years after the K20D which is quite a significant gap as far as tech is concerned. The two cameras offer different body type with the Olympus TG-310 being a Compact camera and the Pentax K20D being a Mid-size SLR camera.

Before getting in to a thorough comparison, below is a simple highlight of how the TG-310 scores against the K20D in relation to portability, imaging, features and an overall mark.

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Reasons to pick Olympus TG-310 over the Pentax K20D

 TG-310 K20D 
LaunchedJanuary 2011June 2008Newer by 31 months

Reasons to pick Pentax K20D over the Olympus TG-310

 K20D TG-310 
Manually focus Very exact focusing

Common features in the Olympus TG-310 and Pentax K20D

 TG-310 K20D 
Display typeFixed Fixed Fixed display
Display sizing2.7"2.7"Equivalent display size
Display resolution230k230kExact same display resolution
Selfie screen Neither contains selfie screen
Touch display Neither contains Touch display

Olympus TG-310 vs Pentax K20D Physical Comparison

In case you're going to travel with your camera frequently, you need to take into account its weight and proportions. The Olympus TG-310 has got exterior dimensions of 96mm x 63mm x 23mm (3.8" x 2.5" x 0.9") accompanied by a weight of 155 grams (0.34 lbs) whilst the Pentax K20D has measurements of 142mm x 101mm x 70mm (5.6" x 4.0" x 2.8") accompanied by a weight of 800 grams (1.76 lbs).

Compare the Olympus TG-310 versus Pentax K20D in the new Camera and Lens Size Comparison Tool. Camera Size Comparison with Lenses

Keep in mind, the weight of an Interchangeable Lens Camera will differ based on the lens you have at that time. Following is the front view measurements comparison of the TG-310 compared to the K20D.

Olympus TG-310 vs Pentax K20D size comparison

Factoring in size and weight, the portability grade of the TG-310 and K20D is 94 and 59 respectively.

Olympus TG-310 vs Pentax K20D top view buttons comparison

Olympus TG-310 vs Pentax K20D Sensor Comparison

Often, it is difficult to visualize the gap between sensor dimensions only by checking technical specs. The picture underneath will help offer you a far better sense of the sensor sizes in the TG-310 and K20D.

As you can tell, each of the cameras enjoy different megapixel count and different sensor dimensions. The TG-310 featuring a tinier sensor is going to make shooting bokeh harder and the Pentax K20D will resolve more detail due to its extra 1 Megapixels. Greater resolution will allow you to crop photos far more aggressively. The younger TG-310 should have an edge with regard to sensor innovation.

Olympus TG-310 vs Pentax K20D sensor size comparison

Olympus TG-310 vs Pentax K20D Screen and ViewFinder

Olympus TG-310 vs Pentax K20D Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Portrait photography with Olympus TG-310
Portrait photography with Pentax K20D
33
MP count good (14 megapixels)
provides face detection autofocus
focusing manually not possible
no manual mode
no external flash support
sensor is very small (1/2.3")
lack of RAW files
72
has manual focus
MP count decent (15 megapixels)
sensor size is good (APS-C)
supports RAW formats
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Street Comparison

Olympus TG-310 Street photography info
Pentax K20D Street photography info
66
image stabilization (Sensor-shift)
weather proof
lighter than average in class (155 grams)
no articulating screen
sensor is very small (1/2.3")
lack of RAW files
65
built in image stabilization (Sensor based)
sensor size is good (APS-C)
supports RAW formats
weather proofing
screen is fixed
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Sports Comparison

Sports photography with Olympus TG-310
Sports photography with Pentax K20D
40
image stabilization (Sensor-shift)
MP count good (14 megapixels)
provides tracking autofocus
weather proof
slow continuous shooting (1.0 frames per second)
no shutter priority
sensor is very small (1/2.3")
terrible battery (150 per charge)
lack of phase detect autofocus
68
built in image stabilization (Sensor based)
MP count decent (15 megapixels)
sensor size is good (APS-C)
weather proofing
has phase detect auto focus
max fps very slow (3.0 frames/s)
Photography Glossary

Travel Comparison

Travel photography with Olympus TG-310
Travel photography with Pentax K20D
67
lighter than average in class (155g)
weather proof
MP count good (14 megapixels)
flash built-in
fairly wide (28mm)
doesn't have Time Lapse mode
terrible battery (150 shots)
doesn't posses selfie friendly display
slow maximum aperture (f3.9)
64
weather proofing
MP count decent (15 megapixels)
built-in flash
screen is not selfie friendly
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Landscape Comparison

Landscape photography with Olympus TG-310
Landscape photography with Pentax K20D
39
fairly wide (28mm)
image stabilization (Sensor-shift)
MP count good (14 megapixels)
weather proof
focusing manually not possible
cannot switch lens (fixed lens mount)
slow maximum aperture (f3.9)
tiny screen (2.7")
no manual mode
sensor is very small (1/2.3")
lack of RAW files
terrible battery (150 CIPA)
doesn't have Time Lapse mode
71
has manual focus
swap lenses (Pentax KAF2 mount)
built in image stabilization (Sensor based)
MP count decent (15 megapixels)
sensor size is good (APS-C)
supports RAW formats
weather proofing
screen is small (2.7 inches)
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Vlogging Comparison

Vlogging with Olympus TG-310
Vlogging with Pentax K20D
32
fairly wide (28mm)
image stabilization (Sensor-shift)
provides face detection autofocus
lighter than average in class (155 grams)
slow maximum aperture (f3.9)
doesn't posses selfie friendly display
video res low (1280 x 720 resolution)
doesn't have external mic support
9
no video shooting
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Olympus TG-310 vs Pentax K20D Specifications

Detailed spec comparison table for Olympus TG-310 and Pentax K20D
 Olympus TG-310Pentax K20D
General Information
Make Olympus Pentax
Model type Olympus TG-310 Pentax K20D
Type Waterproof Advanced DSLR
Announced 2011-01-06 2008-06-25
Body design Compact Mid-size SLR
Sensor Information
Chip TruePic III+ -
Sensor type CCD CMOS
Sensor size 1/2.3" APS-C
Sensor measurements 6.17 x 4.55mm 23.4 x 15.6mm
Sensor area 28.1mm² 365.0mm²
Sensor resolution 14MP 15MP
Anti alias filter
Aspect ratio - 3:2
Highest Possible resolution 4288 x 3216 4672 x 3104
Maximum native ISO 1600 3200
Maximum enhanced ISO - 6400
Lowest native ISO 80 100
RAW pictures
Autofocusing
Focus manually
Touch to focus
Continuous AF
AF single
Tracking AF
Selective AF
Center weighted AF
AF multi area
AF live view
Face detection focusing
Contract detection focusing
Phase detection focusing
Total focus points - 11
Cross type focus points - -
Lens
Lens mount type fixed lens Pentax KAF2
Lens zoom range 28-102mm (3.6x) -
Largest aperture f/3.9-5.9 -
Macro focusing range 3cm -
Amount of lenses - 151
Crop factor 5.8 1.5
Screen
Screen type Fixed Type Fixed Type
Screen size 2.7 inch 2.7 inch
Resolution of screen 230 thousand dot 230 thousand dot
Selfie friendly
Liveview
Touch function
Screen tech TFT Color LCD -
Viewfinder Information
Viewfinder type None Optical (pentaprism)
Viewfinder coverage - 95%
Viewfinder magnification - 0.64x
Features
Min shutter speed 4 seconds 30 seconds
Max shutter speed 1/2000 seconds 1/4000 seconds
Continuous shutter speed 1.0 frames/s 3.0 frames/s
Shutter priority
Aperture priority
Expose Manually
Exposure compensation - Yes
Custom WB
Image stabilization
Integrated flash
Flash distance 4.20 m 13.00 m (at ISO 100)
Flash settings Auto, On, Off, Red-Eye, Fill-in Auto, Red-Eye, Slow, Red-Eye Slow, Rear curtain, wireless
External flash
Auto exposure bracketing
White balance bracketing
Max flash sync - 1/180 seconds
Exposure
Multisegment
Average
Spot
Partial
AF area
Center weighted
Video features
Video resolutions 1280 x 720 (30 fps), 640 x 480 (30 fps), 320 x 180 (30fps) -
Maximum video resolution 1280x720 None
Video file format Motion JPEG -
Microphone input
Headphone input
Connectivity
Wireless Eye-Fi Connected None
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS None None
Physical
Environment seal
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 155g (0.34 lbs) 800g (1.76 lbs)
Dimensions 96 x 63 x 23mm (3.8" x 2.5" x 0.9") 142 x 101 x 70mm (5.6" x 4.0" x 2.8")
DXO scores
DXO Overall rating not tested 65
DXO Color Depth rating not tested 22.9
DXO Dynamic range rating not tested 11.1
DXO Low light rating not tested 639
Other
Battery life 150 shots -
Type of battery Battery Pack -
Battery ID LI-42B D-LI50
Self timer Yes (2 or 12 sec) Yes (2 or 10 sec)
Time lapse shooting
Type of storage SD/SDHC/SDXC SD/MMC/SDHC card
Storage slots 1 1
Pricing at release $0 $700