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Olympus TG-320 vs Sony A55

Portability
94
Imaging
37
Features
33
Overall
35
Olympus TG-320 front
 
Sony SLT-A55 front
Portability
67
Imaging
56
Features
80
Overall
65

Olympus TG-320 vs Sony A55 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
  • Announced January 2012
Sony A55
(Full Review)
  • 16MP - APS-C Sensor
  • 3" Fully Articulated Display
  • ISO 100 - 12800 (Increase to 25600)
  • Sensor based Image Stabilization
  • 1920 x 1080 video
  • Sony/Minolta Alpha Mount
  • 500g - 124 x 92 x 85mm
  • Announced August 2010
  • New Model is Sony A57
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Olympus TG-320 vs Sony A55 Overview

In this write-up, we are evaluating the Olympus TG-320 versus Sony A55, one being a Waterproof and the other is a Entry-Level DSLR by manufacturers Olympus and Sony. The sensor resolution of the TG-320 (14MP) and the A55 (16MP) is very well matched but the TG-320 (1/2.3") and A55 (APS-C) feature different sensor measurements.

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The TG-320 was unveiled 17 months later than the A55 making the cameras a generation apart from each other. Each of the cameras offer different body type with the Olympus TG-320 being a Compact camera and the Sony A55 being a Compact SLR camera.

Before going through a in depth comparison, below is a brief overview of how the TG-320 scores versus the A55 when it comes to portability, imaging, features and an overall grade.

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Reasons to pick Olympus TG-320 over the Sony A55

 TG-320 A55 
AnnouncedJanuary 2012August 2010More recent by 17 months

Reasons to pick Sony A55 over the Olympus TG-320

 A55 TG-320 
Focus manually Very exact focus
Display typeFully ArticulatedFixed Fully Articulating display
Display sizing3"2.7"Larger display (+0.3")
Display resolution921k230kSharper display (+691k dot)
Selfie screen Easy selfies

Common features in the Olympus TG-320 and Sony A55

 TG-320 A55 
Touch display Absent Touch display

Olympus TG-320 vs Sony A55 Physical Comparison

If you are planning to lug around your camera regularly, you have to think about its weight and size. The Olympus TG-320 has got exterior 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 Sony A55 has specifications of 124mm x 92mm x 85mm (4.9" x 3.6" x 3.3") having a weight of 500 grams (1.10 lbs).

See the Olympus TG-320 versus Sony A55 in the latest Camera and Lens Size Comparison Tool. Camera Size Comparison with Lenses

Bear in mind, the weight of an Interchangeable Lens Camera will differ depending on the lens you are using at the time. Following is the front view overall size comparison of the TG-320 vs the A55.

Olympus TG-320 vs Sony A55 size comparison

Considering size and weight, the portability grade of the TG-320 and A55 is 94 and 67 respectively.

Olympus TG-320 vs Sony A55 top view buttons comparison

Olympus TG-320 vs Sony A55 Sensor Comparison

Usually, it can be difficult to picture the contrast between sensor measurements merely by checking specifications. The photograph below may give you a far better sense of the sensor sizing in the TG-320 and A55.

To sum up, both of these cameras enjoy different megapixels and different sensor measurements. The TG-320 with its tinier sensor is going to make achieving bokeh tougher and the Sony A55 will give extra detail having an extra 2MP. Greater resolution can also allow you to crop photos far more aggressively. The newer TG-320 provides a benefit with regard to sensor tech.

Olympus TG-320 vs Sony A55 sensor size comparison

Olympus TG-320 vs Sony A55 Screen and ViewFinder

Olympus TG-320 vs Sony A55 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Olympus TG-320 Portrait photography factors
Sony A55 Portrait photography factors
33
decent sensor resolution (14MP)
provides face detect focusing
lack of manual focus
manual mode not available
no external flash support
sensor size is tiny (1/2.3")
has no RAW support
73
focusing manually
decent sensor resolution (16 megapixels)
decent sensor size (APS-C)
provides face detect autofocus
saves RAW formats
Photography Glossary

Street Comparison

Olympus TG-320 as a Street photography camera
Sony A55 as a Street photography camera
66
image stabilization (Sensor-shift)
environment sealing
lighter than average in class (155 grams)
fixed screen
sensor size is tiny (1/2.3")
has no RAW support
77
fully articulated screen
built in image stabilization (Sensor based)
decent sensor size (APS-C)
saves RAW formats
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Sports Comparison

Olympus TG-320 as a Sports photography camera
Sony A55 as a Sports photography camera
40
image stabilization (Sensor-shift)
decent sensor resolution (14 megapixels)
provides tracking focus
environment sealing
low fps (1.0 fps)
no shutter priority mode
sensor size is tiny (1/2.3")
not so great battery pack (150 CIPA)
has no phase detect AF
68
built in image stabilization (Sensor based)
decent sensor resolution (16 megapixels)
decent sensor size (APS-C)
sensor has phase detect autofocus
terrible battery (380 per charge)
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Travel Comparison

Olympus TG-320 as a Travel photography camera
Sony A55 as a Travel photography camera
67
lighter than average in class (155 grams)
environment sealing
decent sensor resolution (14MP)
built-in flash
rather wide (28mm)
no Timelapse function
not so great battery pack (150 shots)
does not feature selfie friendly screen
sluggish maximum aperture (f3.5)
62
decent sensor resolution (16 megapixels)
flash built-in
selfie friendly display
missing Time Lapse function
terrible battery (380 shots)
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Landscape Comparison

Olympus TG-320 Landscape photography info
Sony A55 Landscape photography info
39
rather wide (28mm)
image stabilization (Sensor-shift)
decent sensor resolution (14 megapixels)
environment sealing
lack of manual focus
lens is fixed (fixed lens mount)
sluggish maximum aperture (f3.5)
small screen (2.7 inch)
manual mode not available
sensor size is tiny (1/2.3")
has no RAW support
not so great battery pack (150 shots)
no Timelapse function
67
focusing manually
change lenses (Sony/Minolta Alpha mount)
decent sized screen (3 inch)
built in image stabilization (Sensor based)
decent sensor resolution (16 megapixels)
decent sensor size (APS-C)
saves RAW formats
terrible battery (380 CIPA)
missing Time Lapse function
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Vlogging Comparison

Olympus TG-320 Vlogging advice
Sony A55 Vlogging advice
32
rather wide (28mm)
image stabilization (Sensor-shift)
provides face detect focusing
lighter than average in class (155g)
sluggish maximum aperture (f3.5)
does not feature selfie friendly screen
video quality not great (1280 x 720 pixels)
no microphone jack
78
selfie friendly display
built in image stabilization (Sensor based)
provides face detect autofocus
high quality video (1920 x 1080 pixels)
includes mic socket
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Olympus TG-320 vs Sony A55 Specifications

Detailed spec comparison table for Olympus TG-320 and Sony A55
 Olympus TG-320Sony SLT-A55
General Information
Brand Olympus Sony
Model type Olympus TG-320 Sony SLT-A55
Class Waterproof Entry-Level DSLR
Announced 2012-01-10 2010-08-24
Physical type Compact Compact SLR
Sensor Information
Processor Chip TruePic III+ Bionz
Sensor type CCD CMOS
Sensor size 1/2.3" APS-C
Sensor dimensions 6.17 x 4.55mm 23.5 x 15.6mm
Sensor surface area 28.1mm² 366.6mm²
Sensor resolution 14 megapixel 16 megapixel
Anti alias filter
Aspect ratio - 3:2 and 16:9
Maximum resolution 4288 x 3216 4912 x 3264
Maximum native ISO 1600 12800
Maximum boosted ISO - 25600
Lowest native ISO 80 100
RAW pictures
Autofocusing
Focus manually
Touch focus
Autofocus continuous
Single autofocus
Tracking autofocus
Selective autofocus
Autofocus center weighted
Multi area autofocus
Autofocus live view
Face detection focus
Contract detection focus
Phase detection focus
Total focus points - 15
Cross type focus points - 3
Lens
Lens support fixed lens Sony/Minolta Alpha
Lens zoom range 28-102mm (3.6x) -
Highest aperture f/3.5-5.1 -
Macro focusing range 3cm -
Total lenses - 143
Crop factor 5.8 1.5
Screen
Screen type Fixed Type Fully Articulated
Screen size 2.7 inches 3 inches
Screen resolution 230 thousand dots 921 thousand dots
Selfie friendly
Liveview
Touch display
Screen technology TFT Color LCD -
Viewfinder Information
Viewfinder None Electronic
Viewfinder resolution - 1,150 thousand dots
Viewfinder coverage - 100%
Viewfinder magnification - 0.73x
Features
Slowest shutter speed 4s 30s
Maximum shutter speed 1/2000s 1/4000s
Continuous shooting rate 1.0 frames/s 10.0 frames/s
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation - Yes
Change white balance
Image stabilization
Built-in flash
Flash distance 5.80 m 10.00 m (@ ISO 100)
Flash modes Auto, On, Off, Red-Eye, Fill-in Auto, On, Off, Red-Eye, Slow Sync, High Speed Sync, Rear Curtain, Fill-in, Wireless
External flash
Auto exposure bracketing
White balance bracketing
Maximum flash synchronize - 1/160s
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Video resolutions 1280 x 720 (30 fps), 640 x 480 (30 fps), 320 x 180 (30fps) 1920 x 1080 (60, 29.97 fps), 1440 x 1080 (30fps), 640 x 424 (29.97 fps)
Maximum video resolution 1280x720 1920x1080
Video data format MPEG-4, H.264 MPEG-4, AVCHD, H.264
Mic port
Headphone port
Connectivity
Wireless None Eye-Fi Connected
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS None BuiltIn
Physical
Environment sealing
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 155 grams (0.34 lbs) 500 grams (1.10 lbs)
Dimensions 96 x 63 x 23mm (3.8" x 2.5" x 0.9") 124 x 92 x 85mm (4.9" x 3.6" x 3.3")
DXO scores
DXO All around rating not tested 73
DXO Color Depth rating not tested 23.0
DXO Dynamic range rating not tested 12.4
DXO Low light rating not tested 816
Other
Battery life 150 pictures 380 pictures
Battery type Battery Pack Battery Pack
Battery ID LI-42B NP-FW50
Self timer Yes (2 or 12 sec, pet auto shutter) Yes (2 or 10 sec)
Time lapse recording
Type of storage SD/SDHC/SDXC SD/SDHC/SDXC/Memory Stick Pro Duo/ Pro-HG Duo
Card slots Single Single
Launch pricing $0 $800