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Olympus TG-4 vs Pentax 645Z

Portability
90
Imaging
41
Features
51
Overall
45
Olympus Tough TG-4 front
 
Pentax 645Z front
Portability
49
Imaging
80
Features
74
Overall
77

Olympus TG-4 vs Pentax 645Z 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
  • Earlier Model is Olympus TG-3
  • Updated by Olympus TG-5
Pentax 645Z
(Full Review)
  • 51MP - Medium format Sensor
  • 3.2" Tilting Display
  • ISO 100 - 204800
  • No Anti-Alias Filter
  • 1920 x 1080 video
  • Pentax 645AF2 Mount
  • 1550g - 156 x 117 x 123mm
  • Launched April 2014
  • Earlier Model is Pentax 645D
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Olympus TG-4 vs Pentax 645Z Overview

On this page, we are matching up the Olympus TG-4 vs Pentax 645Z, former being a Waterproof while the other is a Pro DSLR by manufacturers Olympus and Pentax. There exists a noticeable gap between the sensor resolutions of the TG-4 (16MP) and 645Z (51MP) and the TG-4 (1/2.3") and 645Z (Medium format) boast totally different sensor sizes.

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The TG-4 was brought out 13 months later than the 645Z making them a generation apart from one another. Both of these cameras have different body design with the Olympus TG-4 being a Compact camera and the Pentax 645Z being a Large SLR camera.

Before going straight to a in-depth comparison, here is a brief overview of how the TG-4 scores against the 645Z in regards to portability, imaging, features and an overall grade.

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

 TG-4 645Z 
LaunchedApril 2015April 2014More recent by 13 months

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

 645Z TG-4 
Display typeTiltingFixed Tilting display
Display dimensions3.2"3"Larger display (+0.2")
Display resolution1037k460kCrisper display (+577k dot)

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

 TG-4 645Z 
Focus manually Very precise focusing
Selfie screen Lack of selfie screen
Touch display Lack of Touch display

Olympus TG-4 vs Pentax 645Z Physical Comparison

In case you're aiming to lug around your camera often, you'll have to factor its weight and volume. The Olympus TG-4 offers exterior dimensions of 112mm x 66mm x 31mm (4.4" x 2.6" x 1.2") with a weight of 247 grams (0.54 lbs) whilst the Pentax 645Z has sizing of 156mm x 117mm x 123mm (6.1" x 4.6" x 4.8") having a weight of 1550 grams (3.42 lbs).

Analyze the Olympus TG-4 vs Pentax 645Z in our brand new Camera plus Lens Size Comparison Tool. Camera Size Comparison with Lenses

Keep in mind, the weight of an ILC will change based on the lens you are utilising at that time. Underneath is a front view scale comparison of the TG-4 against the 645Z.

Olympus TG-4 vs Pentax 645Z size comparison

Considering dimensions and weight, the portability rating of the TG-4 and 645Z is 90 and 49 respectively.

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

Olympus TG-4 vs Pentax 645Z Sensor Comparison

Normally, it can be tough to see the difference between sensor measurements merely by going over technical specs. The photograph underneath should give you a more clear sense of the sensor dimensions in the TG-4 and 645Z.

As you have seen, both the cameras have different resolutions and different sensor measurements. The TG-4 due to its tinier sensor will make achieving shallower depth of field more difficult and the Pentax 645Z will offer you more detail having its extra 35 Megapixels. Greater resolution will also enable you to crop images a bit more aggressively. The more modern TG-4 will have an advantage with regard to sensor innovation.

Olympus TG-4 vs Pentax 645Z sensor size comparison

Olympus TG-4 vs Pentax 645Z Screen and ViewFinder

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

Portrait Comparison

Olympus TG-4 as a Portrait photography camera
Pentax 645Z as a Portrait photography camera
47
has manual focus
good MP (16MP)
has face detect focus
saves RAW files
manual mode not available
external flash not possible
small sensor size (1/2.3")
88
manual focus
megapixel count fantastic (51MP)
sensor size is large (Medium format)
supports face detect autofocus
supports RAW formats
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Street Comparison

Olympus TG-4 Street photography highlights
Pentax 645Z Street photography highlights
65
image stabilization (Sensor-shift)
saves RAW files
weather proof
no moving screen
small sensor size (1/2.3")
more heavy than others (247g)
63
has a tilting screen
sensor size is large (Medium format)
supports RAW formats
weather proofing
good ISO range (204,800)
does not have image stabilization
heavier than others in class (1,550 grams)
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Sports Comparison

Olympus TG-4 Sports photography features
Pentax 645Z Sports photography features
48
image stabilization (Sensor-shift)
good MP (16MP)
has tracking focus
weather proof
good battery (380 per charge)
low fps (5.0 frames/s)
no shutter priority mode
small sensor size (1/2.3")
has no phase detect auto focus
71
megapixel count fantastic (51 megapixels)
sensor size is large (Medium format)
supports tracking focus
weather proofing
supports phase detect autofocus
slow continuous shooting (3.0 frames/s)
does not have image stabilization
bad battery pack (650 per charge)
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Travel Comparison

Olympus TG-4 Travel photography advice
Pentax 645Z Travel photography advice
74
good battery (380 CIPA)
weather proof
good MP (16 megapixels)
flash built-in
decently wide (25mm)
very good maximum aperture (f2.0)
more heavy than others (247 grams)
doesn't feature selfie friendly display
51
weather proofing
megapixel count fantastic (51MP)
bad battery pack (650 shots)
heavier than others in class (1,550g)
screen is not selfie friendly
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Landscape Comparison

Olympus TG-4 as a Landscape photography camera
Pentax 645Z as a Landscape photography camera
62
has manual focus
decently wide (25mm)
very good maximum aperture (f2.0)
screen size is good (3 inch)
image stabilization (Sensor-shift)
good MP (16 megapixels)
saves RAW files
weather proof
good battery (380 shots)
lens is fixed (fixed lens mount)
manual mode not available
small sensor size (1/2.3")
78
manual focus
swap lenses (Pentax 645AF2 mount)
pretty good screen size (3.2 inches)
megapixel count fantastic (51MP)
sensor size is large (Medium format)
does not have anti-alias filter
good ISO range (204,800)
supports RAW formats
weather proofing
has dual storage slots
does not have image stabilization
bad battery pack (650 per charge)
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Vlogging Comparison

Vlogging with Olympus TG-4
Vlogging with Pentax 645Z
34
decently wide (25mm)
very good maximum aperture (f2.0)
image stabilization (Sensor-shift)
has face detect focus
high video quality (1920 x 1080 resolution)
doesn't feature selfie friendly display
missing microphone port
more heavy than others (247 grams)
27
supports face detect autofocus
video res high (1920 x 1080 pxls)
comes with mic jack
screen is not selfie friendly
does not have image stabilization
heavier than others in class (1,550g)
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Olympus TG-4 vs Pentax 645Z Specifications

Detailed spec comparison table for Olympus TG-4 and Pentax 645Z
 Olympus Tough TG-4Pentax 645Z
General Information
Brand Name Olympus Pentax
Model type Olympus Tough TG-4 Pentax 645Z
Category Waterproof Pro DSLR
Announced 2015-04-13 2014-04-15
Body design Compact Large SLR
Sensor Information
Processor Chip TruePic VII PRIME III
Sensor type BSI-CMOS CMOS
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 16 megapixels 51 megapixels
Anti alias filter
Aspect ratio 1:1, 4:3, 3:2 and 16:9 4:3
Highest Possible resolution 4608 x 3456 8256 x 6192
Maximum native ISO 6400 204800
Lowest native ISO 100 100
RAW format
Autofocusing
Manual focusing
Autofocus touch
Autofocus continuous
Autofocus single
Autofocus tracking
Autofocus selectice
Center weighted autofocus
Multi area autofocus
Live view autofocus
Face detection autofocus
Contract detection autofocus
Phase detection autofocus
Total focus points 25 27
Lens
Lens mount type fixed lens Pentax 645AF2
Lens zoom range 25-100mm (4.0x) -
Highest aperture f/2.0-4.9 -
Macro focusing range 1cm -
Total lenses - 6
Crop factor 5.8 0.8
Screen
Range of screen Fixed Type Tilting
Screen sizing 3 inches 3.2 inches
Resolution of screen 460 thousand dot 1,037 thousand dot
Selfie friendly
Liveview
Touch function
Viewfinder Information
Viewfinder type None Optical (pentaprism)
Viewfinder coverage - 98%
Viewfinder magnification - 0.85x
Features
Min shutter speed 4s 30s
Max shutter speed 1/2000s 1/4000s
Continuous shutter speed 5.0 frames/s 3.0 frames/s
Shutter priority
Aperture priority
Manual exposure
Exposure compensation - Yes
Custom white balance
Image stabilization
Integrated flash
Flash distance 7.90 m (at ISO 1600) no built-in flash
Flash settings Auto, redeye reduction, fill-in, off, LED Flash On, Flash On+Red-eye Reduction, Slow-speed Sync, Slow-speed Sync+Red-eye, P-TTL, Trailing Curtain Sync, contrast-control-sync, high-speed sync, wireless sync
Hot shoe
AEB
WB bracketing
Max flash sync - 1/125s
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Supported video resolutions 1920 x 1080 (30p), 1280 x 720 (30p), 640 x 480 (30 fps) 1920 x 1080 (60i, 50i, 30p, 25p, 24p), 1280 x 720 (60p, 50p, 30p, 25p,24p)
Maximum video resolution 1920x1080 1920x1080
Video file format H.264, Motion JPEG 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 proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 247 grams (0.54 pounds) 1550 grams (3.42 pounds)
Physical dimensions 112 x 66 x 31mm (4.4" x 2.6" x 1.2") 156 x 117 x 123mm (6.1" x 4.6" x 4.8")
DXO scores
DXO Overall rating not tested 101
DXO Color Depth rating not tested 26.0
DXO Dynamic range rating not tested 14.7
DXO Low light rating not tested 4505
Other
Battery life 380 pictures 650 pictures
Battery format Battery Pack Battery Pack
Battery ID LI-92B D-LI90
Self timer Yes (2 or 12 sec, custom) Yes (2 or 10 secs)
Time lapse feature
Storage media SD, SDHC, SDXC, Internal Memory Dual SD/SDHC/SDXC slots
Storage slots 1 Two
Launch price $379 $5,024