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Olympus E-M1 III vs Pentax RS1500

Portability
67
Imaging
62
Features
96
Overall
75
Olympus OM-D E-M1 Mark III front
 
Pentax Optio RS1500 front
Portability
93
Imaging
37
Features
30
Overall
34

Olympus E-M1 III vs Pentax RS1500 Key Specs

Olympus E-M1 III
(Full Review)
  • 20MP - Four Thirds Sensor
  • 3" Fully Articulated Display
  • ISO 200 - 25600
  • Sensor based 5-axis Image Stabilization
  • No Anti-Alias Filter
  • 1/8000s Max Shutter
  • 4096 x 2160 video
  • Micro Four Thirds Mount
  • 580g - 134 x 91 x 69mm
  • Revealed February 2020
  • Replaced the Olympus E-M1 II
Pentax RS1500
(Full Review)
  • 14MP - 1/2.3" Sensor
  • 2.7" Fixed Display
  • ISO 80 - 6400
  • 1280 x 720 video
  • 28-110mm (F3.5-5.5) lens
  • 157g - 114 x 58 x 28mm
  • Revealed March 2011
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Olympus E-M1 III vs Pentax RS1500 Overview

Following is a thorough assessment of the Olympus E-M1 III vs Pentax RS1500, one is a Pro Mirrorless and the other is a Small Sensor Compact by brands Olympus and Pentax. There exists a crucial gap among the sensor resolutions of the E-M1 III (20MP) and RS1500 (14MP) and the E-M1 III (Four Thirds) and RS1500 (1/2.3") boast totally different sensor sizes.

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The E-M1 III was released 9 years after the RS1500 which is a fairly serious gap as far as camera technology is concerned. The two cameras have different body design with the Olympus E-M1 III being a SLR-style mirrorless camera and the Pentax RS1500 being a Compact camera.

Before going straight to a thorough comparison, here is a simple introduction of how the E-M1 III scores vs the RS1500 with respect to portability, imaging, features and an overall score.

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Reasons to pick Olympus E-M1 III over the Pentax RS1500

 E-M1 III RS1500 
RevealedFebruary 2020March 2011More modern by 109 months
Display typeFully ArticulatedFixed Fully Articulating display
Display dimensions3"2.7"Larger display (+0.3")
Display resolution1037k230kClearer display (+807k dot)
Selfie screen Take selfies
Touch display Easily navigate

Reasons to pick Pentax RS1500 over the Olympus E-M1 III

 RS1500 E-M1 III 

Common features in the Olympus E-M1 III and Pentax RS1500

 E-M1 III RS1500 
Focus manually Dial accurate focusing

Olympus E-M1 III vs Pentax RS1500 Physical Comparison

For anyone who is looking to carry around your camera regularly, you're going to have to think about its weight and dimensions. The Olympus E-M1 III has got physical dimensions of 134mm x 91mm x 69mm (5.3" x 3.6" x 2.7") and a weight of 580 grams (1.28 lbs) and the Pentax RS1500 has dimensions of 114mm x 58mm x 28mm (4.5" x 2.3" x 1.1") accompanied by a weight of 157 grams (0.35 lbs).

Analyze the Olympus E-M1 III vs Pentax RS1500 in the latest Camera with Lens Size Comparison Tool. Camera Size Comparison with Lenses

Don't forget, the weight of an Interchangeable Lens Camera will differ depending on the lens you choose at that time. Below is a front view measurement comparison of the E-M1 III compared to the RS1500.

Olympus E-M1 III vs Pentax RS1500 size comparison

Looking at dimensions and weight, the portability grade of the E-M1 III and RS1500 is 67 and 93 respectively.

Olympus E-M1 III vs Pentax RS1500 top view buttons comparison

Olympus E-M1 III vs Pentax RS1500 Sensor Comparison

Normally, it is very difficult to envision the contrast in sensor sizes only by researching specifications. The picture underneath will provide you a better sense of the sensor sizes in the E-M1 III and RS1500.

Plainly, the 2 cameras provide different resolutions and different sensor sizes. The E-M1 III due to its larger sensor will make shooting bokeh easier and the Olympus E-M1 III will provide you with greater detail as a result of its extra 6MP. Greater resolution will also let you crop photos more aggressively. The fresher E-M1 III is going to have an edge in sensor technology.

Olympus E-M1 III vs Pentax RS1500 sensor size comparison

Olympus E-M1 III vs Pentax RS1500 Screen and ViewFinder

Olympus E-M1 III vs Pentax RS1500 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Olympus E-M1 III Portrait photography info
Pentax RS1500 Portrait photography info
77
you can focus manually
decent megapixels (20 megapixels)
sensor size is decent (Four Thirds)
features face detection autofocus
delivers RAW files
35
you can focus manually
good megapixels (14MP)
manual mode not possible
no external flash support
sensor size is very small (1/2.3")
doesn't have RAW files
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Street Comparison

Olympus E-M1 III Street photography highlights
Pentax RS1500 Street photography highlights
78
fully articulated screen
built in image stabilization (Sensor based 5-axis)
sensor size is decent (Four Thirds)
delivers RAW files
includes focus via touch
weather sealing
great high ISO (25,600)
54
environment sealing
no articulating screen
does not have image stabilization
sensor size is very small (1/2.3")
doesn't have RAW files
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Sports Comparison

Olympus E-M1 III Sports photography details
Pentax RS1500 Sports photography details
81
max shutter speed is good (1/8,000 seconds)
silent mode (1/32,000 seconds)
fast shooting (60.0 fps)
built in image stabilization (Sensor based 5-axis)
decent megapixels (20MP)
sensor size is decent (Four Thirds)
features tracking autofocus
weather sealing
has phase detect autofocus
37
good megapixels (14 megapixels)
supports tracking autofocus
environment sealing
max frames per second low (1.0 fps)
no shutter priority
does not have image stabilization
sensor size is very small (1/2.3")
doesn't have phase detect autofocus
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Travel Comparison

Olympus E-M1 III Travel photography details
Pentax RS1500 Travel photography details
79
weather sealing
supports bluetooth
includes focus via touch
decent megapixels (20MP)
display is selfie friendly
67
environment sealing
good megapixels (14MP)
built-in flash
relatively wide (28mm)
lack of Timelapse mode
display is not selfie friendly
somewhat slow max aperture (f3.5)
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Landscape Comparison

Olympus E-M1 III Landscape photography advice
Pentax RS1500 Landscape photography advice
81
you can focus manually
swap lenses (Micro Four Thirds mount)
screen is a decent size (3 inch)
built in image stabilization (Sensor based 5-axis)
decent megapixels (20MP)
sensor size is decent (Four Thirds)
no low pass filter
great high ISO (25,600)
delivers RAW files
weather sealing
2 card slots
40
you can focus manually
relatively wide (28mm)
good megapixels (14 megapixels)
environment sealing
can't swap lens (fixed lens mount)
somewhat slow max aperture (f3.5)
small screen (2.7 inch)
manual mode not possible
does not have image stabilization
sensor size is very small (1/2.3")
doesn't have RAW files
lack of Timelapse mode
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Vlogging Comparison

Olympus E-M1 III Vlogging features
Pentax RS1500 Vlogging features
79
display is selfie friendly
has touchscreen
built in image stabilization (Sensor based 5-axis)
features face detection autofocus
video res high (4096 x 2160 resolution)
has external microphone support
25
relatively wide (28mm)
somewhat slow max aperture (f3.5)
display is not selfie friendly
does not have image stabilization
low video resolution (1280 x 720 pixels)
lack of external microphone port
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Olympus E-M1 III vs Pentax RS1500 Specifications

Detailed spec comparison table for Olympus E-M1 III and Pentax RS1500
 Olympus OM-D E-M1 Mark IIIPentax Optio RS1500
General Information
Brand Olympus Pentax
Model type Olympus OM-D E-M1 Mark III Pentax Optio RS1500
Class Pro Mirrorless Small Sensor Compact
Revealed 2020-02-11 2011-03-16
Body design SLR-style mirrorless Compact
Sensor Information
Powered by TruePic IX -
Sensor type CMOS CCD
Sensor size Four Thirds 1/2.3"
Sensor measurements 17.4 x 13mm 6.17 x 4.55mm
Sensor surface area 226.2mm² 28.1mm²
Sensor resolution 20 megapixels 14 megapixels
Anti alias filter
Aspect ratio 4:3 4:3, 3:2 and 16:9
Peak resolution 5184 x 3888 4288 x 3216
Highest native ISO 25600 6400
Min native ISO 200 80
RAW pictures
Min enhanced ISO 64 -
Autofocusing
Focus manually
AF touch
AF continuous
AF single
AF tracking
AF selectice
Center weighted AF
Multi area AF
Live view AF
Face detect AF
Contract detect AF
Phase detect AF
Total focus points 121 9
Cross type focus points 121 -
Lens
Lens support Micro Four Thirds fixed lens
Lens zoom range - 28-110mm (3.9x)
Max aperture - f/3.5-5.5
Macro focusing range - 1cm
Number of lenses 107 -
Focal length multiplier 2.1 5.8
Screen
Range of display Fully Articulated Fixed Type
Display size 3 inches 2.7 inches
Display resolution 1,037k dot 230k dot
Selfie friendly
Liveview
Touch function
Display tech - TFT color LCD with Anti-reflective coating
Viewfinder Information
Viewfinder Electronic None
Viewfinder resolution 2,360k dot -
Viewfinder coverage 100 percent -
Viewfinder magnification 0.74x -
Features
Min shutter speed 60 seconds 4 seconds
Max shutter speed 1/8000 seconds 1/1500 seconds
Max quiet shutter speed 1/32000 seconds -
Continuous shutter speed 60.0fps 1.0fps
Shutter priority
Aperture priority
Manual exposure
Exposure compensation Yes -
Change WB
Image stabilization
Inbuilt flash
Flash distance no built-in flash 3.90 m
Flash options 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, Soft
Hot shoe
Auto exposure bracketing
WB bracketing
Max flash sync 1/250 seconds -
Exposure
Multisegment
Average
Spot
Partial
AF area
Center weighted
Video features
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 1280 x 720 (30, 15 fps), 640 x 480 (30, 15 fps), 320 x 240 (30, 15 fps)
Highest video resolution 4096x2160 1280x720
Video format MPEG-4, H.264 Motion JPEG
Microphone jack
Headphone jack
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 seal
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 580 grams (1.28 lb) 157 grams (0.35 lb)
Physical dimensions 134 x 91 x 69mm (5.3" x 3.6" x 2.7") 114 x 58 x 28mm (4.5" x 2.3" x 1.1")
DXO scores
DXO Overall rating not tested not tested
DXO Color Depth rating not tested not tested
DXO Dynamic range rating not tested not tested
DXO Low light rating not tested not tested
Other
Battery life 420 photographs 260 photographs
Battery form Battery Pack Battery Pack
Battery ID BLH-1 D-LI92
Self timer Yes (2 or 12 secs, custom) Yes (2 or 10 sec)
Time lapse recording
Type of storage Dual SD/SDHC/SDXC slots (UHS-II on first slot) SD/SDHC/SDXC, Internal
Storage slots 2 Single
Retail cost $1,800 $150