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Olympus TG-810 vs Pentax 645D

Portability
92
Imaging
37
Features
37
Overall
37
Olympus TG-810 front
 
Pentax 645D front
Portability
50
Imaging
76
Features
52
Overall
66

Olympus TG-810 vs Pentax 645D Key Specs

Olympus TG-810
(Full Review)
  • 14MP - 1/2.3" Sensor
  • 3" Fixed Display
  • ISO 80 - 1600
  • Sensor-shift Image Stabilization
  • 1280 x 720 video
  • 28-140mm (F3.9-5.9) lens
  • 215g - 100 x 65 x 26mm
  • Announced August 2011
Pentax 645D
(Full Review)
  • 40MP - Medium format Sensor
  • 3" Fixed Display
  • ISO 200 - 1600
  • No Anti-Alias Filter
  • No Video
  • Pentax 645AF2 Mount
  • 1480g - 156 x 117 x 119mm
  • Released March 2010
  • Updated by Pentax 645Z
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Olympus TG-810 vs Pentax 645D Overview

Let's look more closely at the Olympus TG-810 and Pentax 645D, one being a Waterproof and the other is a Pro DSLR by competitors Olympus and Pentax. There is a big difference between the sensor resolutions of the TG-810 (14MP) and 645D (40MP) and the TG-810 (1/2.3") and 645D (Medium format) boast different sensor dimensions.

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The TG-810 was announced 18 months later than the 645D making them a generation apart from each other. Both of the cameras feature different body design with the Olympus TG-810 being a Compact camera and the Pentax 645D being a Large SLR camera.

Before going right into a complete comparison, here is a short introduction of how the TG-810 grades vs the 645D when it comes to portability, imaging, features and an overall grade.

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Reasons to pick Olympus TG-810 over the Pentax 645D

 TG-810 645D 
ReleasedAugust 2011March 2010More recent by 18 months

Reasons to pick Pentax 645D over the Olympus TG-810

 645D TG-810 
Focus manually More exact focus
Display resolution921k920kCrisper display (+1k dot)

Common features in the Olympus TG-810 and Pentax 645D

 TG-810 645D 
Display typeFixed Fixed Fixed display
Display size3"3"Same display sizing
Selfie screen Neither provides selfie screen
Touch display Neither provides Touch display

Olympus TG-810 vs Pentax 645D Physical Comparison

If you are going to lug around your camera regularly, you will need to factor its weight and size. The Olympus TG-810 provides exterior measurements of 100mm x 65mm x 26mm (3.9" x 2.6" x 1.0") and a weight of 215 grams (0.47 lbs) and the Pentax 645D has specifications of 156mm x 117mm x 119mm (6.1" x 4.6" x 4.7") having a weight of 1480 grams (3.26 lbs).

Examine the Olympus TG-810 and Pentax 645D in the latest Camera with Lens Size Comparison Tool. Camera Size Comparison with Lenses

Bear in mind, the weight of an Interchangeable Lens Camera will differ based on the lens you are utilizing at that moment. Underneath is a front view measurements comparison of the TG-810 versus the 645D.

Olympus TG-810 vs Pentax 645D size comparison

Considering size and weight, the portability grade of the TG-810 and 645D is 92 and 50 respectively.

Olympus TG-810 vs Pentax 645D top view buttons comparison

Olympus TG-810 vs Pentax 645D Sensor Comparison

Oftentimes, it can be difficult to visualize the contrast between sensor measurements simply by reading through specifications. The photograph underneath will provide you a clearer sense of the sensor measurements in the TG-810 and 645D.

To sum up, the two cameras come with different megapixels and different sensor measurements. The TG-810 using its tinier sensor is going to make achieving shallow depth of field trickier and the Pentax 645D will give greater detail with its extra 26MP. Greater resolution will also help you crop images a good deal more aggressively. The newer TG-810 provides a benefit with regard to sensor technology.

Olympus TG-810 vs Pentax 645D sensor size comparison

Olympus TG-810 vs Pentax 645D Screen and ViewFinder

Olympus TG-810 vs Pentax 645D Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Olympus TG-810 as a Portrait photography camera
Pentax 645D as a Portrait photography camera
33
good resolution (14MP)
includes face detect autofocus
focusing manually not possible
manual exposure not possible
can't use external flash
small sensor (1/2.3")
no RAW files
77
manual focus
MP count fantastic (40 megapixels)
big sensor size (Medium format)
delivers RAW formats
no liveview
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Street Comparison

Olympus TG-810 Street photography information
Pentax 645D Street photography information
61
built in image stabilization (Sensor-shift)
environment proof
fixed screen
small sensor (1/2.3")
no RAW files
58
big sensor size (Medium format)
delivers RAW formats
weather proofing
screen does not articulate
no image stabilization
Photography Glossary

Sports Comparison

Olympus TG-810 as a Sports photography camera
Pentax 645D as a Sports photography camera
40
built in image stabilization (Sensor-shift)
good resolution (14MP)
includes tracking focus
environment proof
slow continuous shooting (1.0 frames per second)
no shutter priority
small sensor (1/2.3")
not so great battery (220 per charge)
no phase detect autofocus
63
MP count fantastic (40MP)
big sensor size (Medium format)
weather proofing
has phase detect auto focus
no liveview
very slow continuous shooting (1.0 frames/s)
no image stabilization
low battery life (800 per charge)
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Travel Comparison

Olympus TG-810 Travel photography factors
Pentax 645D Travel photography factors
64
environment proof
good resolution (14 megapixels)
has built in flash
fairly wide (28mm)
lack of Time Lapse recording
not so great battery (220 shots)
display is not selfie friendly
sluggish max aperture (f3.9)
55
weather proofing
MP count fantastic (40MP)
low battery life (800 per charge)
does not posses selfie friendly display
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Landscape Comparison

Olympus TG-810 as a Landscape photography camera
Pentax 645D as a Landscape photography camera
43
fairly wide (28mm)
screen size is good (3")
built in image stabilization (Sensor-shift)
good resolution (14MP)
environment proof
focusing manually not possible
lens is fixed (fixed lens mount)
sluggish max aperture (f3.9)
manual exposure not possible
small sensor (1/2.3")
no RAW files
not so great battery (220 shots)
lack of Time Lapse recording
72
manual focus
interchangeable lenses (Pentax 645AF2 mount)
pretty good screen size (3")
MP count fantastic (40MP)
big sensor size (Medium format)
doesnt have anti aliasing filter
delivers RAW formats
weather proofing
two card slots
no liveview
no image stabilization
low battery life (800 shots)
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Vlogging Comparison

Vlogging with Olympus TG-810
Vlogging with Pentax 645D
30
fairly wide (28mm)
built in image stabilization (Sensor-shift)
includes face detect autofocus
sluggish max aperture (f3.9)
display is not selfie friendly
low res video (1280 x 720 pixels)
lack of mic support
9
lack of video recording
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Olympus TG-810 vs Pentax 645D Specifications

Detailed spec comparison table for Olympus TG-810 and Pentax 645D
 Olympus TG-810Pentax 645D
General Information
Brand Name Olympus Pentax
Model type Olympus TG-810 Pentax 645D
Category Waterproof Pro DSLR
Announced 2011-08-16 2010-03-10
Physical type Compact Large SLR
Sensor Information
Powered by TruePic III+ Prime II
Sensor type CCD CCD
Sensor size 1/2.3" Medium format
Sensor dimensions 6.17 x 4.55mm 44 x 33mm
Sensor area 28.1mm² 1,452.0mm²
Sensor resolution 14MP 40MP
Anti alias filter
Aspect ratio 4:3 and 16:9 4:3
Peak resolution 4288 x 3216 7264 x 5440
Highest native ISO 1600 1600
Minimum native ISO 80 200
RAW format
Minimum enhanced ISO - 100
Autofocusing
Focus manually
Touch to focus
Autofocus continuous
Autofocus single
Tracking autofocus
Autofocus selectice
Autofocus center weighted
Multi area autofocus
Live view autofocus
Face detect focus
Contract detect focus
Phase detect focus
Total focus points - 11
Cross type focus points - -
Lens
Lens support fixed lens Pentax 645AF2
Lens zoom range 28-140mm (5.0x) -
Max aperture f/3.9-5.9 -
Macro focusing range 3cm -
Number of lenses - 6
Crop factor 5.8 0.8
Screen
Display type Fixed Type Fixed Type
Display diagonal 3 inches 3 inches
Display resolution 920k dots 921k dots
Selfie friendly
Liveview
Touch function
Display technology TFT Hypercrystal III Color LCD TFT Color LCD with wide-viewing angle and with AR coating
Viewfinder Information
Viewfinder type None Optical (pentaprism)
Viewfinder coverage - 98 percent
Viewfinder magnification - 0.85x
Features
Minimum shutter speed 4 secs 30 secs
Fastest shutter speed 1/2000 secs 1/4000 secs
Continuous shutter rate 1.0 frames per second 1.0 frames per second
Shutter priority
Aperture priority
Manual mode
Exposure compensation - Yes
Set white balance
Image stabilization
Built-in flash
Flash distance 4.20 m no built-in flash
Flash options Auto, On, Off, Red-Eye, Fill-in Auto, On, Off, Red-eye, Slow Sync, Rear Curtain
External flash
AEB
WB bracketing
Fastest flash synchronize - 1/125 secs
Exposure
Multisegment metering
Average metering
Spot metering
Partial metering
AF area metering
Center weighted metering
Video features
Video resolutions 1280 x 720 (30 fps), 640 x 480 (30 fps), 320 x 180 (30fps) -
Highest video resolution 1280x720 None
Video file format MPEG-4, H.264 -
Mic port
Headphone port
Connectivity
Wireless Eye-Fi Connected None
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS BuiltIn None
Physical
Environment sealing
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 215 grams (0.47 lb) 1480 grams (3.26 lb)
Physical dimensions 100 x 65 x 26mm (3.9" x 2.6" x 1.0") 156 x 117 x 119mm (6.1" x 4.6" x 4.7")
DXO scores
DXO Overall rating not tested 82
DXO Color Depth rating not tested 24.6
DXO Dynamic range rating not tested 12.6
DXO Low light rating not tested 1262
Other
Battery life 220 pictures 800 pictures
Battery type Battery Pack Battery Pack
Battery ID LI-50B D-LI90
Self timer Yes (2 or 12 sec) Yes (2 or 10 sec)
Time lapse feature
Type of storage SD/SDHC/SDXC SD/SDHC
Card slots 1 Two
Pricing at release $428 $4,000