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Olympus TG-4 vs Pentax 645D

Portability
90
Imaging
41
Features
51
Overall
45
Olympus Tough TG-4 front
 
Pentax 645D front
Portability
50
Imaging
76
Features
52
Overall
66

Olympus TG-4 vs Pentax 645D Key Specs

Olympus TG-4
(Full Review)
  • 16MP - 1/2.3" Sensor
  • 3" Fixed Screen
  • ISO 100 - 6400
  • Sensor-shift Image Stabilization
  • 1920 x 1080 video
  • 25-100mm (F2.0-4.9) lens
  • 247g - 112 x 66 x 31mm
  • Announced April 2015
  • Older Model is Olympus TG-3
  • Renewed by Olympus TG-5
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
  • Introduced March 2010
  • Replacement is Pentax 645Z
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Olympus TG-4 vs Pentax 645D Overview

Lets take a deeper look at the Olympus TG-4 versus Pentax 645D, one being a Waterproof and the other is a Pro DSLR by brands Olympus and Pentax. There is a huge difference among the resolutions of the TG-4 (16MP) and 645D (40MP) and the TG-4 (1/2.3") and 645D (Medium format) boast totally different sensor sizes.

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The TG-4 was released 5 years later than the 645D and that is a fairly significant gap as far as camera tech is concerned. Each of these cameras have different body design with the Olympus TG-4 being a Compact camera and the Pentax 645D being a Large SLR camera.

Before going straight to a in depth comparison, here is a simple overview of how the TG-4 grades against the 645D in terms of portability, imaging, features and an overall rating.

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Reasons to pick Olympus TG-4 over the Pentax 645D

 TG-4 645D 
IntroducedApril 2015March 2010Fresher by 62 months

Reasons to pick Pentax 645D over the Olympus TG-4

 645D TG-4 
Display resolution921k460kCrisper display (+461k dot)

Common features in the Olympus TG-4 and Pentax 645D

 TG-4 645D 
Focus manually Dial precise focusing
Display typeFixed Fixed Fixed display
Display dimensions3"3"Equal display dimensions
Selfie screen Neither features selfie screen
Touch friendly display No Touch friendly display

Olympus TG-4 vs Pentax 645D Physical Comparison

In case you're planning to carry your camera often, you should take into account its weight and volume. The Olympus TG-4 enjoys exterior measurements of 112mm x 66mm x 31mm (4.4" x 2.6" x 1.2") and a weight of 247 grams (0.54 lbs) and the Pentax 645D has sizing of 156mm x 117mm x 119mm (6.1" x 4.6" x 4.7") along with a weight of 1480 grams (3.26 lbs).

Examine the Olympus TG-4 versus 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 vary dependant on the lens you are employing during that time. Underneath is a front view over all size comparison of the TG-4 compared to the 645D.

Olympus TG-4 vs Pentax 645D size comparison

Looking at size and weight, the portability rating of the TG-4 and 645D is 90 and 50 respectively.

Olympus TG-4 vs Pentax 645D top view buttons comparison

Olympus TG-4 vs Pentax 645D Sensor Comparison

Generally, it's hard to visualise the difference in sensor sizing merely by researching specs. The graphic below will help provide you a more clear sense of the sensor sizing in the TG-4 and 645D.

All in all, both of the cameras have different resolutions and different sensor sizing. The TG-4 featuring a smaller sensor will make shooting shallow DOF tougher and the Pentax 645D will provide you with extra detail as a result of its extra 24MP. Greater resolution will let you crop images a bit more aggressively. The more modern TG-4 is going to have an edge with regard to sensor technology.

Olympus TG-4 vs Pentax 645D sensor size comparison

Olympus TG-4 vs Pentax 645D Screen and ViewFinder

Olympus TG-4 vs Pentax 645D Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Olympus TG-4 Portrait photography info
Pentax 645D Portrait photography info
47
focusing manually
decent megapixels (16 megapixels)
features face detection focus
supports RAW formats
manual exposure not available
can't use external flash
sensor is very small (1/2.3")
77
you can focus manually
sensor resolution is amazing (40 megapixels)
sensor size is big (Medium format)
delivers RAW formats
does not have liveview
Photography Glossary

Street Comparison

Olympus TG-4 Street photography features
Pentax 645D Street photography features
65
built in image stabilization (Sensor-shift)
supports RAW formats
weather proof
no articulating screen
sensor is very small (1/2.3")
heavier than others in class (247 grams)
58
sensor size is big (Medium format)
delivers RAW formats
weather proofing
fixed screen
does not have image stabilization
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Sports Comparison

Olympus TG-4 Sports photography highlights
Pentax 645D Sports photography highlights
48
built in image stabilization (Sensor-shift)
decent megapixels (16MP)
features tracking autofocus
weather proof
great battery pack (380 CIPA)
max fps low (5.0 frames/s)
no shutter priority
sensor is very small (1/2.3")
lack of phase detect auto focus
63
sensor resolution is amazing (40MP)
sensor size is big (Medium format)
weather proofing
has phase detect AF
does not have liveview
max fps low (1.0 frames/s)
does not have image stabilization
low battery life (800 CIPA)
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Travel Comparison

Olympus TG-4 as a Travel photography camera
Pentax 645D as a Travel photography camera
74
great battery pack (380 per charge)
weather proof
decent megapixels (16 megapixels)
has built in flash
really wide (25mm)
great maximum aperture (f2.0)
heavier than others in class (247 grams)
does not posses selfie friendly screen
55
weather proofing
sensor resolution is amazing (40 megapixels)
low battery life (800 CIPA)
does not have selfie friendly screen
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Landscape Comparison

Olympus TG-4 as a Landscape photography camera
Pentax 645D as a Landscape photography camera
62
focusing manually
really wide (25mm)
great maximum aperture (f2.0)
screen size is good (3 inch)
built in image stabilization (Sensor-shift)
decent megapixels (16MP)
supports RAW formats
weather proof
great battery pack (380 per charge)
fixed lens (fixed lens mount)
manual exposure not available
sensor is very small (1/2.3")
72
you can focus manually
swap lenses (Pentax 645AF2 mount)
screen is a decent size (3")
sensor resolution is amazing (40MP)
sensor size is big (Medium format)
does not have low pass filter
delivers RAW formats
weather proofing
has double storage slots
does not have liveview
does not have image stabilization
low battery life (800 CIPA)
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Vlogging Comparison

Olympus TG-4 Vlogging factors
Pentax 645D Vlogging factors
34
really wide (25mm)
great maximum aperture (f2.0)
built in image stabilization (Sensor-shift)
features face detection focus
high quality video (1920 x 1080 pixels)
does not posses selfie friendly screen
missing external mic support
heavier than others in class (247g)
9
no video
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Olympus TG-4 vs Pentax 645D Specifications

Detailed spec comparison table for Olympus TG-4 and Pentax 645D
 Olympus Tough TG-4Pentax 645D
General Information
Make Olympus Pentax
Model type Olympus Tough TG-4 Pentax 645D
Category Waterproof Pro DSLR
Announced 2015-04-13 2010-03-10
Body design Compact Large SLR
Sensor Information
Chip TruePic VII Prime II
Sensor type BSI-CMOS CCD
Sensor size 1/2.3" Medium format
Sensor measurements 6.17 x 4.55mm 44 x 33mm
Sensor area 28.1mm² 1,452.0mm²
Sensor resolution 16MP 40MP
Anti alias filter
Aspect ratio 1:1, 4:3, 3:2 and 16:9 4:3
Peak resolution 4608 x 3456 7264 x 5440
Highest native ISO 6400 1600
Min native ISO 100 200
RAW pictures
Min enhanced ISO - 100
Autofocusing
Manual focusing
Touch focus
AF continuous
AF single
Tracking AF
Selective AF
Center weighted AF
Multi area AF
AF live view
Face detection focusing
Contract detection focusing
Phase detection focusing
Total focus points 25 11
Lens
Lens support fixed lens Pentax 645AF2
Lens zoom range 25-100mm (4.0x) -
Maximal aperture f/2.0-4.9 -
Macro focusing distance 1cm -
Amount of lenses - 6
Crop factor 5.8 0.8
Screen
Range of screen Fixed Type Fixed Type
Screen sizing 3" 3"
Screen resolution 460k dot 921k dot
Selfie friendly
Liveview
Touch operation
Screen tech - TFT Color LCD with wide-viewing angle and with AR coating
Viewfinder Information
Viewfinder 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 speed 5.0 frames/s 1.0 frames/s
Shutter priority
Aperture priority
Manual exposure
Exposure compensation - Yes
Custom WB
Image stabilization
Inbuilt flash
Flash distance 7.90 m (at ISO 1600) no built-in flash
Flash settings Auto, redeye reduction, fill-in, off, LED Auto, On, Off, Red-eye, Slow Sync, Rear Curtain
External flash
Auto exposure bracketing
WB bracketing
Fastest flash sync - 1/125 secs
Exposure
Multisegment metering
Average metering
Spot metering
Partial metering
AF area metering
Center weighted metering
Video features
Supported video resolutions 1920 x 1080 (30p), 1280 x 720 (30p), 640 x 480 (30 fps) -
Highest video resolution 1920x1080 None
Video data format H.264, Motion JPEG -
Microphone 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 proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 247 grams (0.54 lb) 1480 grams (3.26 lb)
Physical dimensions 112 x 66 x 31mm (4.4" x 2.6" x 1.2") 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 380 shots 800 shots
Form of battery Battery Pack Battery Pack
Battery ID LI-92B D-LI90
Self timer Yes (2 or 12 sec, custom) Yes (2 or 10 sec)
Time lapse shooting
Storage media SD, SDHC, SDXC, Internal Memory SD/SDHC
Storage slots One Two
Launch pricing $379 $4,000