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Olympus TG-320 vs Pentax 645Z

Portability
94
Imaging
37
Features
33
Overall
35
Olympus TG-320 front
 
Pentax 645Z front
Portability
49
Imaging
80
Features
74
Overall
77

Olympus TG-320 vs Pentax 645Z Key Specs

Olympus TG-320
(Full Review)
  • 14MP - 1/2.3" Sensor
  • 2.7" Fixed Screen
  • ISO 80 - 1600
  • Sensor-shift Image Stabilization
  • 1280 x 720 video
  • 28-102mm (F3.5-5.1) lens
  • 155g - 96 x 63 x 23mm
  • Revealed January 2012
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
  • Introduced April 2014
  • Succeeded the Pentax 645D
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Olympus TG-320 vs Pentax 645Z Overview

Its time to take a closer look at the Olympus TG-320 and Pentax 645Z, one being a Waterproof and the other is a Pro DSLR by manufacturers Olympus and Pentax. There exists a significant gap among the sensor resolutions of the TG-320 (14MP) and 645Z (51MP) and the TG-320 (1/2.3") and 645Z (Medium format) offer different sensor dimensions.

Photography Glossary

The TG-320 was introduced 3 years before the 645Z and that is a fairly sizable gap as far as camera technology is concerned. Both of these cameras have different body design with the Olympus TG-320 being a Compact camera and the Pentax 645Z being a Large SLR camera.

Before we go straight to a comprehensive comparison, here is a brief synopsis of how the TG-320 matches up versus the 645Z with respect to portability, imaging, features and an overall rating.

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Reasons to pick Olympus TG-320 over the Pentax 645Z

 TG-320 645Z 

Reasons to pick Pentax 645Z over the Olympus TG-320

 645Z TG-320 
IntroducedApril 2014January 2012Fresher by 27 months
Focus manually Very precise focus
Display typeTiltingFixed Tilting display
Display dimensions3.2"2.7"Larger display (+0.5")
Display resolution1037k230kCrisper display (+807k dot)

Common features in the Olympus TG-320 and Pentax 645Z

 TG-320 645Z 
Selfie screen Absent selfie screen
Touch display Absent Touch display

Olympus TG-320 vs Pentax 645Z Physical Comparison

For those who are looking to carry your camera regularly, you should think about its weight and volume. The Olympus TG-320 enjoys physical measurements of 96mm x 63mm x 23mm (3.8" x 2.5" x 0.9") with a weight of 155 grams (0.34 lbs) whilst the Pentax 645Z has sizing of 156mm x 117mm x 123mm (6.1" x 4.6" x 4.8") with a weight of 1550 grams (3.42 lbs).

Analyze the Olympus TG-320 and Pentax 645Z 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 using during that time. Following is a front view measurement comparison of the TG-320 compared to the 645Z.

Olympus TG-320 vs Pentax 645Z size comparison

Factoring in dimensions and weight, the portability score of the TG-320 and 645Z is 94 and 49 respectively.

Olympus TG-320 vs Pentax 645Z top view buttons comparison

Olympus TG-320 vs Pentax 645Z Sensor Comparison

Typically, it's difficult to imagine the contrast in sensor sizing only by going through technical specs. The visual below should offer you a far better sense of the sensor measurements in the TG-320 and 645Z.

As you can tell, both of these cameras have different resolutions and different sensor sizing. The TG-320 with its smaller sensor is going to make getting bokeh more challenging and the Pentax 645Z will produce greater detail using its extra 37 Megapixels. Greater resolution will also help you crop images a bit more aggressively. The older TG-320 will be behind with regard to sensor innovation.

Olympus TG-320 vs Pentax 645Z sensor size comparison

Olympus TG-320 vs Pentax 645Z Screen and ViewFinder

Olympus TG-320 vs Pentax 645Z Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Olympus TG-320 Portrait photography information
Pentax 645Z Portrait photography information
33
good MP (14 megapixels)
offers face detect focus
lack of manual focus
lack of manual exposure
can't use external flash
very small sensor (1/2.3")
lack of RAW support
88
focusing manually
fantastic sensor resolution (51 megapixels)
sensor size is large (Medium format)
offers face detect focusing
supports RAW files
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Street Comparison

Olympus TG-320 as a Street photography camera
Pentax 645Z as a Street photography camera
66
built in image stabilization (Sensor-shift)
weather sealing
lighter than average (155g)
no moving screen
very small sensor (1/2.3")
lack of RAW support
63
tilting screen
sensor size is large (Medium format)
supports RAW files
environment proofing
good high ISO (204,800)
no image stabilization
more heavy than others (1,550 grams)
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Sports Comparison

Olympus TG-320 Sports photography factors
Pentax 645Z Sports photography factors
40
built in image stabilization (Sensor-shift)
good MP (14MP)
offers tracking focus
weather sealing
painfully slow continuous shooting (1.0 fps)
no shutter priority mode
very small sensor (1/2.3")
low battery pack (150 CIPA)
lack of phase detect auto focus
71
fantastic sensor resolution (51MP)
sensor size is large (Medium format)
offers tracking focus
environment proofing
supports phase detect AF
slow frames per second (3.0 frames/s)
no image stabilization
bad battery pack (650 per charge)
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Travel Comparison

Travel photography with Olympus TG-320
Travel photography with Pentax 645Z
67
lighter than average (155g)
weather sealing
good MP (14 megapixels)
has built in flash
fairly wide (28mm)
lack of Timelapse function
low battery pack (150 per charge)
display is not selfie friendly
sluggish maximum aperture (f3.5)
51
environment proofing
fantastic sensor resolution (51 megapixels)
bad battery pack (650 CIPA)
more heavy than others (1,550 grams)
does not feature selfie friendly screen
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Landscape Comparison

Landscape photography with Olympus TG-320
Landscape photography with Pentax 645Z
39
fairly wide (28mm)
built in image stabilization (Sensor-shift)
good MP (14 megapixels)
weather sealing
lack of manual focus
lens is fixed (fixed lens mount)
sluggish maximum aperture (f3.5)
screen is somewhat small (2.7 inches)
lack of manual exposure
very small sensor (1/2.3")
lack of RAW support
low battery pack (150 per charge)
lack of Timelapse function
78
focusing manually
change lenses (Pentax 645AF2 mount)
pretty good screen size (3.2 inches)
fantastic sensor resolution (51 megapixels)
sensor size is large (Medium format)
doesnt have anti aliasing filter
good high ISO (204,800)
supports RAW files
environment proofing
has dual storage slots
no image stabilization
bad battery pack (650 per charge)
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Vlogging Comparison

Vlogging with Olympus TG-320
Vlogging with Pentax 645Z
32
fairly wide (28mm)
built in image stabilization (Sensor-shift)
offers face detect focus
lighter than average (155 grams)
sluggish maximum aperture (f3.5)
display is not selfie friendly
video resolution low (1280 x 720 resolution)
lack of microphone support
27
offers face detect focusing
high res video (1920 x 1080 pixels)
comes with microphone jack
does not feature selfie friendly screen
no image stabilization
more heavy than others (1,550g)
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Olympus TG-320 vs Pentax 645Z Specifications

Detailed spec comparison table for Olympus TG-320 and Pentax 645Z
 Olympus TG-320Pentax 645Z
General Information
Brand Olympus Pentax
Model Olympus TG-320 Pentax 645Z
Category Waterproof Pro DSLR
Revealed 2012-01-10 2014-04-15
Body design Compact Large SLR
Sensor Information
Processor Chip TruePic III+ PRIME III
Sensor type CCD CMOS
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 14MP 51MP
Anti aliasing filter
Aspect ratio - 4:3
Max resolution 4288 x 3216 8256 x 6192
Max native ISO 1600 204800
Min native ISO 80 100
RAW files
Autofocusing
Manual focus
Autofocus touch
Autofocus continuous
Single autofocus
Tracking autofocus
Autofocus selectice
Center weighted autofocus
Multi area autofocus
Live view autofocus
Face detection autofocus
Contract detection autofocus
Phase detection autofocus
Number of focus points - 27
Cross focus points - -
Lens
Lens mount fixed lens Pentax 645AF2
Lens focal range 28-102mm (3.6x) -
Maximal aperture f/3.5-5.1 -
Macro focus range 3cm -
Total lenses - 6
Focal length multiplier 5.8 0.8
Screen
Screen type Fixed Type Tilting
Screen diagonal 2.7" 3.2"
Resolution of screen 230k dot 1,037k dot
Selfie friendly
Liveview
Touch friendly
Screen tech TFT Color LCD -
Viewfinder Information
Viewfinder None Optical (pentaprism)
Viewfinder coverage - 98 percent
Viewfinder magnification - 0.85x
Features
Min shutter speed 4 seconds 30 seconds
Max shutter speed 1/2000 seconds 1/4000 seconds
Continuous shutter speed 1.0fps 3.0fps
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation - Yes
Custom white balance
Image stabilization
Inbuilt flash
Flash range 5.80 m no built-in flash
Flash options Auto, On, Off, Red-Eye, Fill-in 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
External flash
AEB
White balance bracketing
Max flash sync - 1/125 seconds
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) 1920 x 1080 (60i, 50i, 30p, 25p, 24p), 1280 x 720 (60p, 50p, 30p, 25p,24p)
Max video resolution 1280x720 1920x1080
Video file format MPEG-4, H.264 MPEG-4, H.264
Microphone input
Headphone input
Connectivity
Wireless None None
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 3.0 (5 GBit/sec)
GPS None Optional
Physical
Environmental seal
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 155 grams (0.34 lb) 1550 grams (3.42 lb)
Physical dimensions 96 x 63 x 23mm (3.8" x 2.5" x 0.9") 156 x 117 x 123mm (6.1" x 4.6" x 4.8")
DXO scores
DXO Overall score not tested 101
DXO Color Depth score not tested 26.0
DXO Dynamic range score not tested 14.7
DXO Low light score not tested 4505
Other
Battery life 150 photographs 650 photographs
Battery format Battery Pack Battery Pack
Battery model LI-42B D-LI90
Self timer Yes (2 or 12 sec, pet auto shutter) Yes (2 or 10 secs)
Time lapse feature
Type of storage SD/SDHC/SDXC Dual SD/SDHC/SDXC slots
Storage slots One Dual
Launch price $0 $5,024