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Olympus TG-320 vs Pentax 645D

Portability
94
Imaging
37
Features
33
Overall
35
Olympus TG-320 front
 
Pentax 645D front
Portability
50
Imaging
75
Features
52
Overall
65

Olympus TG-320 vs Pentax 645D 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
  • Released January 2012
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
  • Refreshed by Pentax 645Z
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Olympus TG-320 vs Pentax 645D Overview

On this page, we are analyzing the Olympus TG-320 and Pentax 645D, former being a Waterproof while the other is a Pro DSLR by companies Olympus and Pentax. There is a considerable difference between the sensor resolutions of the TG-320 (14MP) and 645D (40MP) and the TG-320 (1/2.3") and 645D (Medium format) boast different sensor sizing.

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The TG-320 was unveiled 23 months later than the 645D making them a generation apart from each other. Both of the cameras have different body design with the Olympus TG-320 being a Compact camera and the Pentax 645D being a Large SLR camera.

Before we go into a detailed comparison, here is a short overview of how the TG-320 scores versus the 645D with respect to portability, imaging, features and an overall grade.

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

 TG-320 645D 
ReleasedJanuary 2012March 2010More recent by 23 months

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

 645D TG-320 
Focus manually Dial precise focus
Display dimensions3"2.7"Larger display (+0.3")
Display resolution921k230kSharper display (+691k dot)

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

 TG-320 645D 
Display typeFixed Fixed Fixed display
Selfie screen Lack of selfie screen
Touch friendly display Lack of Touch friendly display

Olympus TG-320 vs Pentax 645D Physical Comparison

When you are aiming to lug around your camera regularly, you'll have to factor its weight and volume. The Olympus TG-320 enjoys physical dimensions of 96mm x 63mm x 23mm (3.8" x 2.5" x 0.9") and a weight of 155 grams (0.34 lbs) while the Pentax 645D has sizing of 156mm x 117mm x 119mm (6.1" x 4.6" x 4.7") with a weight of 1480 grams (3.26 lbs).

Look at the Olympus TG-320 and Pentax 645D in our completely new Camera plus Lens Size Comparison Tool. Camera Size Comparison with Lenses

Keep in mind, the weight of an ILC will differ depending on the lens you have attached at that time. Following is a front view physical size comparison of the TG-320 compared to the 645D.

Olympus TG-320 vs Pentax 645D size comparison

Taking into account size and weight, the portability score of the TG-320 and 645D is 94 and 50 respectively.

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

Olympus TG-320 vs Pentax 645D Sensor Comparison

Oftentimes, it is difficult to visualize the gap between sensor measurements simply by checking specs. The photograph below might give you a more clear sense of the sensor sizes in the TG-320 and 645D.

As you can plainly see, each of the cameras have different megapixels and different sensor measurements. The TG-320 with its tinier sensor is going to make achieving shallower DOF harder and the Pentax 645D will give you greater detail having an extra 26MP. Greater resolution will enable you to crop images a bit more aggressively. The fresher TG-320 should have an edge in sensor tech.

Olympus TG-320 vs Pentax 645D sensor size comparison

Olympus TG-320 vs Pentax 645D Screen and ViewFinder

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

Portrait Comparison

Olympus TG-320 Portrait photography highlights
Pentax 645D Portrait photography highlights
33
decent megapixels (14MP)
includes face detection focus
no manual focus
manual mode not available
external flash not possible
tiny sensor size (1/2.3")
has no RAW files
77
has manual focus
megapixel count fantastic (40MP)
large sensor size (Medium format)
delivers RAW files
doesn't have liveview
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Street Comparison

Street photography with Olympus TG-320
Street photography with Pentax 645D
66
image stabilization (Sensor-shift)
weather sealing
lighter than competitors in class (155 grams)
fixed screen
tiny sensor size (1/2.3")
has no RAW files
58
large sensor size (Medium format)
delivers RAW files
environment sealing
no moving screen
does not have image stabilization
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Sports Comparison

Sports photography with Olympus TG-320
Sports photography with Pentax 645D
40
image stabilization (Sensor-shift)
decent megapixels (14MP)
includes tracking autofocus
weather sealing
max fps very slow (1.0 frames/s)
no shutter priority
tiny sensor size (1/2.3")
bad battery (150 CIPA)
has no phase detect auto focus
62
megapixel count fantastic (40 megapixels)
large sensor size (Medium format)
environment sealing
has phase detect autofocus
doesn't have liveview
slow fps (1.0 frames per second)
does not have image stabilization
low battery life (800 shots)
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Travel Comparison

Olympus TG-320 as a Travel photography camera
Pentax 645D as a Travel photography camera
67
lighter than competitors in class (155g)
weather sealing
decent megapixels (14 megapixels)
built-in flash
reasonably wide (28mm)
doesn't have Time Lapse mode
bad battery (150 CIPA)
doesn't contain selfie friendly screen
sluggish maximum aperture (f3.5)
55
environment sealing
megapixel count fantastic (40MP)
low battery life (800 shots)
does not have selfie friendly screen
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Landscape Comparison

Landscape photography with Olympus TG-320
Landscape photography with Pentax 645D
39
reasonably wide (28mm)
image stabilization (Sensor-shift)
decent megapixels (14MP)
weather sealing
no manual focus
lens is fixed (fixed lens mount)
sluggish maximum aperture (f3.5)
screen is small (2.7")
manual mode not available
tiny sensor size (1/2.3")
has no RAW files
bad battery (150 per charge)
doesn't have Time Lapse mode
72
has manual focus
change lenses (Pentax 645AF2 mount)
screen size is decent (3 inches)
megapixel count fantastic (40 megapixels)
large sensor size (Medium format)
doesnt have low pass filter
delivers RAW files
environment sealing
has double storage slots
doesn't have liveview
does not have image stabilization
low battery life (800 per charge)
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Vlogging Comparison

Olympus TG-320 as a Vlogging camera
Pentax 645D as a Vlogging camera
32
reasonably wide (28mm)
image stabilization (Sensor-shift)
includes face detection focus
lighter than competitors in class (155g)
sluggish maximum aperture (f3.5)
doesn't contain selfie friendly screen
video res low (1280 x 720 resolution)
doesn't have external mic port
9
no video
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Olympus TG-320 vs Pentax 645D Specifications

Detailed spec comparison table for Olympus TG-320 and Pentax 645D
 Olympus TG-320Pentax 645D
General Information
Brand Name Olympus Pentax
Model Olympus TG-320 Pentax 645D
Category Waterproof Pro DSLR
Released 2012-01-10 2010-03-10
Body design Compact Large SLR
Sensor Information
Chip 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 14 megapixels 40 megapixels
Anti aliasing filter
Aspect ratio - 4:3
Peak resolution 4288 x 3216 7264 x 5440
Highest native ISO 1600 1600
Min native ISO 80 200
RAW support
Min enhanced ISO - 100
Autofocusing
Manual focus
AF touch
Continuous AF
AF single
AF tracking
Selective AF
AF center weighted
AF multi area
AF live view
Face detection focusing
Contract detection focusing
Phase detection focusing
Number of focus points - 11
Cross focus points - -
Lens
Lens mounting type fixed lens Pentax 645AF2
Lens focal range 28-102mm (3.6x) -
Maximal aperture f/3.5-5.1 -
Macro focus distance 3cm -
Amount of lenses - 6
Focal length multiplier 5.8 0.8
Screen
Screen type Fixed Type Fixed Type
Screen sizing 2.7 inch 3 inch
Screen resolution 230 thousand dot 921 thousand dot
Selfie friendly
Liveview
Touch display
Screen technology TFT Color LCD TFT Color LCD with wide-viewing angle and with AR coating
Viewfinder Information
Viewfinder type None Optical (pentaprism)
Viewfinder coverage - 98%
Viewfinder magnification - 0.85x
Features
Minimum shutter speed 4s 30s
Fastest shutter speed 1/2000s 1/4000s
Continuous shutter speed 1.0fps 1.0fps
Shutter priority
Aperture priority
Manual exposure
Exposure compensation - Yes
Custom WB
Image stabilization
Inbuilt flash
Flash range 5.80 m no built-in flash
Flash modes Auto, On, Off, Red-Eye, Fill-in Auto, On, Off, Red-eye, Slow Sync, Rear Curtain
Hot shoe
Auto exposure bracketing
White balance bracketing
Fastest flash sync - 1/125s
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 data format MPEG-4, H.264 -
Mic jack
Headphone jack
Connectivity
Wireless None None
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS None None
Physical
Environmental seal
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 155 gr (0.34 pounds) 1480 gr (3.26 pounds)
Physical dimensions 96 x 63 x 23mm (3.8" x 2.5" x 0.9") 156 x 117 x 119mm (6.1" x 4.6" x 4.7")
DXO scores
DXO Overall score not tested 82
DXO Color Depth score not tested 24.6
DXO Dynamic range score not tested 12.6
DXO Low light score not tested 1262
Other
Battery life 150 photos 800 photos
Battery form Battery Pack Battery Pack
Battery model LI-42B D-LI90
Self timer Yes (2 or 12 sec, pet auto shutter) Yes (2 or 10 sec)
Time lapse feature
Type of storage SD/SDHC/SDXC SD/SDHC
Storage slots Single 2
Launch cost $0 $4,000