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Olympus E-M1 III vs Panasonic ZS25

Portability
67
Imaging
62
Features
96
Overall
75
Olympus OM-D E-M1 Mark III front
 
Panasonic Lumix DMC-ZS25 front
Portability
93
Imaging
40
Features
43
Overall
41

Olympus E-M1 III vs Panasonic ZS25 Key Specs

Olympus E-M1 III
(Full Review)
  • 20MP - Four Thirds Sensor
  • 3" Fully Articulated Screen
  • ISO 200 - 25600
  • Sensor based 5-axis Image Stabilization
  • No Anti-Alias Filter
  • 1/8000s Maximum Shutter
  • 4096 x 2160 video
  • Micro Four Thirds Mount
  • 580g - 134 x 91 x 69mm
  • Announced February 2020
  • Old Model is Olympus E-M1 II
Panasonic ZS25
(Full Review)
  • 16MP - 1/2.3" Sensor
  • 3" Fixed Screen
  • ISO 100 - 6400
  • Optical Image Stabilization
  • 1920 x 1080 video
  • 24-480mm (F3.3-6.4) lens
  • 193g - 105 x 59 x 28mm
  • Launched January 2013
  • Other Name is Lumix DMC-TZ35
  • Older Model is Panasonic ZS20
  • Later Model is Panasonic ZS30
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Olympus E-M1 III vs Panasonic ZS25 Overview

Lets look more closely at the Olympus E-M1 III vs Panasonic ZS25, former being a Pro Mirrorless while the latter is a Small Sensor Superzoom by rivals Olympus and Panasonic. There exists a sizable gap between the resolutions of the E-M1 III (20MP) and ZS25 (16MP) and the E-M1 III (Four Thirds) and ZS25 (1/2.3") have different sensor sizing.

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The E-M1 III was unveiled 7 years later than the ZS25 and that is quite a significant difference as far as technology is concerned. Both of these cameras have different body design with the Olympus E-M1 III being a SLR-style mirrorless camera and the Panasonic ZS25 being a Compact camera.

Before getting straight to a detailed comparison, here is a short synopsis of how the E-M1 III scores versus the ZS25 when it comes to portability, imaging, features and an overall rating.

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Reasons to pick Olympus E-M1 III over the Panasonic ZS25

 E-M1 III ZS25 
LaunchedFebruary 2020January 2013Fresher by 87 months
Manual focus Dial accurate focus
Screen typeFully ArticulatedFixed Fully Articulating screen
Screen resolution1037k460kClearer screen (+577k dot)
Selfie screen Take selfies
Touch friendly screen Quickly navigate

Reasons to pick Panasonic ZS25 over the Olympus E-M1 III

 ZS25 E-M1 III 

Common features in the Olympus E-M1 III and Panasonic ZS25

 E-M1 III ZS25 
Screen dimensions3"3"Equal screen measurement

Olympus E-M1 III vs Panasonic ZS25 Physical Comparison

If you are going to carry your camera often, you'll have to consider its weight and volume. The Olympus E-M1 III comes with physical dimensions of 134mm x 91mm x 69mm (5.3" x 3.6" x 2.7") with a weight of 580 grams (1.28 lbs) and the Panasonic ZS25 has sizing of 105mm x 59mm x 28mm (4.1" x 2.3" x 1.1") having a weight of 193 grams (0.43 lbs).

Check the Olympus E-M1 III vs Panasonic ZS25 in our completely new Camera & Lens Size Comparison Tool. Camera Size Comparison with Lenses

Take into account, the weight of an ILC will vary depending on the lens you are employing at the time. Following is a front view physical size comparison of the E-M1 III vs the ZS25.

Olympus E-M1 III vs Panasonic ZS25 size comparison

Taking into consideration dimensions and weight, the portability rating of the E-M1 III and ZS25 is 67 and 93 respectively.

Olympus E-M1 III vs Panasonic ZS25 top view buttons comparison

Olympus E-M1 III vs Panasonic ZS25 Sensor Comparison

Sometimes, it is very difficult to picture the contrast between sensor sizing just by checking specs. The photograph underneath might give you a clearer sense of the sensor sizes in the E-M1 III and ZS25.

As you can plainly see, both of these cameras provide different megapixel count and different sensor sizing. The E-M1 III with its bigger sensor is going to make getting shallow DOF simpler and the Olympus E-M1 III will give you greater detail having an extra 4 Megapixels. Higher resolution will make it easier to crop pictures more aggressively. The newer E-M1 III provides an advantage with regard to sensor technology.

Olympus E-M1 III vs Panasonic ZS25 sensor size comparison

Olympus E-M1 III vs Panasonic ZS25 Screen and ViewFinder

Olympus E-M1 III vs Panasonic ZS25 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Portrait photography with Olympus E-M1 III
Portrait photography with Panasonic ZS25
77
has manual focus
decent MP (20MP)
sensor size is decent (Four Thirds)
includes face detect focusing
delivers RAW formats
32
MP count decent (16 megapixels)
manual focus not available
can't use external flash
very small sensor (1/2.3")
no RAW format
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Street Comparison

Olympus E-M1 III as a Street photography camera
Panasonic ZS25 as a Street photography camera
78
screen articulates fully
has image stabilization (Sensor based 5-axis)
sensor size is decent (Four Thirds)
delivers RAW formats
boasts touch to focus
environment proofing
great ISO range (25,600)
66
image stabilization (Optical)
comes with focus via touch
lighter than average (193g)
screen does not articulate
very small sensor (1/2.3")
no RAW format
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Sports Comparison

Olympus E-M1 III Sports photography features
Panasonic ZS25 Sports photography features
81
maximum shutter speed is high (1/8,000 seconds)
silent shutter (1/32,000 seconds)
fast continuous shooting (60.0 frames per second)
has image stabilization (Sensor based 5-axis)
decent MP (20MP)
sensor size is decent (Four Thirds)
includes tracking focus
environment proofing
sensor has phase detect AF
45
great zoom range (24-480mm 20.0 x zoom)
image stabilization (Optical)
MP count decent (16 megapixels)
comes with tracking focus
low max shutter speed (1/1,200 seconds)
very small sensor (1/2.3")
not so great battery power (260 CIPA)
no phase detect auto focus
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Travel Comparison

Travel photography with Olympus E-M1 III
Travel photography with Panasonic ZS25
79
environment proofing
has bluetooth
boasts touch to focus
decent MP (20 megapixels)
screen is selfie friendly
69
lighter than average (193 grams)
comes with focus via touch
MP count decent (16 megapixels)
has built in flash
reasonably wide (24mm)
great zoom (480mm)
no Time Lapse mode
not so great battery power (260 shots)
doesn't have a selfie friendly screen
somewhat slow maximum aperture (f3.3)
Photography Glossary

Landscape Comparison

Olympus E-M1 III Landscape photography details
Panasonic ZS25 Landscape photography details
81
has manual focus
swap lenses (Micro Four Thirds mount)
pretty good screen size (3 inch)
has image stabilization (Sensor based 5-axis)
decent MP (20MP)
sensor size is decent (Four Thirds)
does not have anti aliasing filter
great ISO range (25,600)
delivers RAW formats
environment proofing
2 card slots
43
reasonably wide (24mm)
screen size is decent (3 inches)
image stabilization (Optical)
MP count decent (16MP)
manual focus not available
fixed lens (fixed lens mount)
somewhat slow maximum aperture (f3.3)
very small sensor (1/2.3")
no RAW format
not so great battery power (260 shots)
no Time Lapse mode
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Vlogging Comparison

Olympus E-M1 III Vlogging factors
Panasonic ZS25 Vlogging factors
79
screen is selfie friendly
touch screen
has image stabilization (Sensor based 5-axis)
includes face detect focusing
video resolution high (4096 x 2160 pixels)
includes mic support
34
reasonably wide (24mm)
image stabilization (Optical)
high quality video (1920 x 1080 pxls)
lighter than average (193g)
somewhat slow maximum aperture (f3.3)
doesn't have a selfie friendly screen
no mic support
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Olympus E-M1 III vs Panasonic ZS25 Specifications

Detailed spec comparison table for Olympus E-M1 III and Panasonic ZS25
 Olympus OM-D E-M1 Mark IIIPanasonic Lumix DMC-ZS25
General Information
Manufacturer Olympus Panasonic
Model Olympus OM-D E-M1 Mark III Panasonic Lumix DMC-ZS25
Also called as - Lumix DMC-TZ35
Category Pro Mirrorless Small Sensor Superzoom
Announced 2020-02-11 2013-01-07
Physical type SLR-style mirrorless Compact
Sensor Information
Processor Chip TruePic IX -
Sensor type CMOS CMOS
Sensor size Four Thirds 1/2.3"
Sensor dimensions 17.4 x 13mm 6.08 x 4.56mm
Sensor surface area 226.2mm² 27.7mm²
Sensor resolution 20 megapixels 16 megapixels
Anti aliasing filter
Aspect ratio 4:3 1:1, 4:3, 3:2 and 16:9
Full resolution 5184 x 3888 4896 x 3672
Max native ISO 25600 6400
Lowest native ISO 200 100
RAW data
Lowest boosted ISO 64 -
Autofocusing
Focus manually
Autofocus touch
Autofocus continuous
Single autofocus
Autofocus tracking
Autofocus selectice
Center weighted autofocus
Multi area autofocus
Live view autofocus
Face detection autofocus
Contract detection autofocus
Phase detection autofocus
Number of focus points 121 23
Cross focus points 121 -
Lens
Lens mounting type Micro Four Thirds fixed lens
Lens focal range - 24-480mm (20.0x)
Maximal aperture - f/3.3-6.4
Macro focus distance - 3cm
Total lenses 107 -
Focal length multiplier 2.1 5.9
Screen
Type of screen Fully Articulated Fixed Type
Screen size 3 inches 3 inches
Resolution of screen 1,037k dots 460k dots
Selfie friendly
Liveview
Touch friendly
Viewfinder Information
Viewfinder Electronic None
Viewfinder resolution 2,360k dots -
Viewfinder coverage 100 percent -
Viewfinder magnification 0.74x -
Features
Lowest shutter speed 60 secs 15 secs
Highest shutter speed 1/8000 secs 1/1200 secs
Highest silent shutter speed 1/32000 secs -
Continuous shooting rate 60.0 frames per second 10.0 frames per second
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes Yes
Set white balance
Image stabilization
Integrated flash
Flash range no built-in flash 6.40 m
Flash settings Redeye, Fill-in, Flash Off, Red-eye Slow sync.(1st curtain), Slow sync.(1st curtain), Slow sync.(2nd curtain), Manual Auto, On, Off, Red-eye, Slow Syncro
Hot shoe
AEB
WB bracketing
Highest flash synchronize 1/250 secs -
Exposure
Multisegment metering
Average metering
Spot metering
Partial metering
AF area metering
Center weighted metering
Video features
Supported video resolutions 4096 x 2160 @ 24p / 237 Mbps, MOV, H.264, Linear PCM3840 x 2160 @ 30p / 102 Mbps, MOV, H.264, Linear PCM3840 x 2160 @ 25p / 102 Mbps, MOV, H.264, Linear PCM3840 x 2160 @ 23.98p / 102 Mbps, MOV, H.264, Linear PCM1920 x 1080 @ 60p, MOV, H.264, Linear PCM1920 x 1080 @ 50p, MOV, H.264, Linear PCM1920 x 1080 @ 30p, MOV, H.264, Linear PCM1920 x 1080 @ 25p, MOV, H.264, Linear PCM1920 x 1080 @ 23.98p, MOV, H.264, Linear PCM 1920 x 1080 (60 fps), 1280 x 720 (60, 30 fps), 640 x 480 (30 fps), 320 x 240 (220 fps)
Max video resolution 4096x2160 1920x1080
Video format MPEG-4, H.264 MPEG-4, AVCHD
Mic support
Headphone support
Connectivity
Wireless Built-In None
Bluetooth
NFC
HDMI
USB USB 3.1 Gen 1 (5 GBit/sec) USB 2.0 (480 Mbit/sec)
GPS None None
Physical
Environmental sealing
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 580g (1.28 lb) 193g (0.43 lb)
Physical dimensions 134 x 91 x 69mm (5.3" x 3.6" x 2.7") 105 x 59 x 28mm (4.1" x 2.3" x 1.1")
DXO scores
DXO All around score not tested not tested
DXO Color Depth score not tested not tested
DXO Dynamic range score not tested not tested
DXO Low light score not tested not tested
Other
Battery life 420 images 260 images
Battery style Battery Pack Battery Pack
Battery model BLH-1 -
Self timer Yes (2 or 12 secs, custom) Yes (2 or 10 sec)
Time lapse feature
Storage type Dual SD/SDHC/SDXC slots (UHS-II on first slot) SD/SDHC/SDXC, Internal
Card slots Two 1
Pricing at launch $1,800 $300