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Olympus E-M10 IV vs Pentax RZ18

Portability
81
Imaging
62
Features
83
Overall
70
Olympus OM-D E-M10 IV front
 
Pentax Optio RZ18 front
Portability
92
Imaging
39
Features
37
Overall
38

Olympus E-M10 IV vs Pentax RZ18 Key Specs

Olympus E-M10 IV
(Full Review)
  • 20MP - Four Thirds Sensor
  • 3" Tilting Screen
  • ISO 200 - 25600
  • Sensor based 5-axis Image Stabilization
  • 3840 x 2160 video
  • Micro Four Thirds Mount
  • 383g - 122 x 84 x 49mm
  • Released August 2020
  • Replaced the Olympus E-M10 III
Pentax RZ18
(Full Review)
  • 16MP - 1/2.3" Sensor
  • 3" Fixed Screen
  • ISO 80 - 6400
  • Sensor-shift Image Stabilization
  • 1280 x 720 video
  • 25-450mm (F3.5-5.9) lens
  • 178g - 97 x 61 x 33mm
  • Revealed September 2011
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Olympus E-M10 IV vs Pentax RZ18 Overview

On this page, we will be reviewing the Olympus E-M10 IV and Pentax RZ18, one is a Entry-Level Mirrorless and the latter is a Small Sensor Superzoom by competitors Olympus and Pentax. There is a significant difference among the resolutions of the E-M10 IV (20MP) and RZ18 (16MP) and the E-M10 IV (Four Thirds) and RZ18 (1/2.3") provide totally different sensor sizes.

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The E-M10 IV was brought out 9 years after the RZ18 which is a fairly sizable gap as far as camera tech is concerned. Both cameras have different body design with the Olympus E-M10 IV being a SLR-style mirrorless camera and the Pentax RZ18 being a Compact camera.

Before diving straight to a full comparison, here is a quick introduction of how the E-M10 IV scores against the RZ18 for portability, imaging, features and an overall score.

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Reasons to pick Olympus E-M10 IV over the Pentax RZ18

 E-M10 IV RZ18 
RevealedAugust 2020September 2011More modern by 109 months
Screen typeTiltingFixed Tilting screen
Screen resolution1040k460kCrisper screen (+580k dot)
Selfie screen Take selfies
Touch screen Quickly navigate

Reasons to pick Pentax RZ18 over the Olympus E-M10 IV

 RZ18 E-M10 IV 

Common features in the Olympus E-M10 IV and Pentax RZ18

 E-M10 IV RZ18 
Focus manually Very exact focusing
Screen dimensions3"3"Equal screen dimensions

Olympus E-M10 IV vs Pentax RZ18 Physical Comparison

For anybody who is looking to carry around your camera often, you'll have to factor its weight and proportions. The Olympus E-M10 IV has physical measurements of 122mm x 84mm x 49mm (4.8" x 3.3" x 1.9") along with a weight of 383 grams (0.84 lbs) while the Pentax RZ18 has measurements of 97mm x 61mm x 33mm (3.8" x 2.4" x 1.3") accompanied by a weight of 178 grams (0.39 lbs).

Compare the Olympus E-M10 IV and Pentax RZ18 in the new Camera with Lens Size Comparison Tool. Camera Size Comparison with Lenses

Always remember, the weight of an Interchangeable Lens Camera will differ dependant on the lens you have attached at the time. Below is a front view over all size comparison of the E-M10 IV compared to the RZ18.

Olympus E-M10 IV vs Pentax RZ18 size comparison

Considering size and weight, the portability grade of the E-M10 IV and RZ18 is 81 and 92 respectively.

Olympus E-M10 IV vs Pentax RZ18 top view buttons comparison

Olympus E-M10 IV vs Pentax RZ18 Sensor Comparison

Often, it is very tough to see the contrast in sensor sizes simply by researching technical specs. The image below will offer you a better sense of the sensor measurements in the E-M10 IV and RZ18.

As you have seen, each of these cameras have different resolutions and different sensor sizes. The E-M10 IV featuring a bigger sensor will make shooting shallower DOF simpler and the Olympus E-M10 IV will result in extra detail having its extra 4MP. Higher resolution can also help you crop pictures a bit more aggressively. The fresher E-M10 IV will have an advantage in sensor innovation.

Olympus E-M10 IV vs Pentax RZ18 sensor size comparison

Olympus E-M10 IV vs Pentax RZ18 Screen and ViewFinder

Olympus E-M10 IV vs Pentax RZ18 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Olympus E-M10 IV Portrait photography details
Pentax RZ18 Portrait photography details
77
has manual focus
resolution is good (20 megapixels)
sensor size is good (Four Thirds)
includes face detect focusing
supports RAW formats
36
manual focus
decent MP (16MP)
manual mode not available
external flash not possible
sensor size is small (1/2.3")
no RAW format
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Street Comparison

Olympus E-M10 IV Street photography factors
Pentax RZ18 Street photography factors
84
has a tilting screen
image stabilization (Sensor based 5-axis)
sensor size is good (Four Thirds)
supports RAW formats
offers touch focus
great high ISO (25,600)
65
built in image stabilization (Sensor-shift)
environment proofing
lighter than average (178 grams)
no articulating screen
sensor size is small (1/2.3")
no RAW format
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Sports Comparison

Olympus E-M10 IV Sports photography highlights
Pentax RZ18 Sports photography highlights
72
quiet mode (1/16,000s)
image stabilization (Sensor based 5-axis)
resolution is good (20 megapixels)
sensor size is good (Four Thirds)
includes tracking focus
has no phase detect AF
47
excellent zoom range (25-450mm 18.0 x zoom)
built in image stabilization (Sensor-shift)
decent MP (16 megapixels)
comes with tracking focus
environment proofing
max frames per second low (1.0 frames per second)
no shutter priority mode
sensor size is small (1/2.3")
no phase detect autofocus
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Travel Comparison

Olympus E-M10 IV Travel photography info
Pentax RZ18 Travel photography info
84
supports bluetooth
offers touch focus
resolution is good (20 megapixels)
built-in flash
screen is selfie friendly
71
lighter than average (178g)
environment proofing
decent MP (16 megapixels)
has built in flash
really wide (25mm)
great reach (450mm)
missing Timelapse function
screen is not selfie friendly
sluggish max aperture (f3.5)
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Landscape Comparison

Olympus E-M10 IV as a Landscape photography camera
Pentax RZ18 as a Landscape photography camera
82
has manual focus
switch lenses (Micro Four Thirds mount)
pretty good screen size (3 inches)
image stabilization (Sensor based 5-axis)
resolution is good (20 megapixels)
sensor size is good (Four Thirds)
great high ISO (25,600)
supports RAW formats
49
manual focus
really wide (25mm)
screen is a decent size (3 inches)
built in image stabilization (Sensor-shift)
decent MP (16 megapixels)
environment proofing
fixed lens (fixed lens mount)
sluggish max aperture (f3.5)
manual mode not available
sensor size is small (1/2.3")
no RAW format
missing Timelapse function
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Vlogging Comparison

Olympus E-M10 IV Vlogging highlights
Pentax RZ18 Vlogging highlights
78
screen is selfie friendly
touchscreen enabled
image stabilization (Sensor based 5-axis)
includes face detect focusing
high res video (3840 x 2160 pixels)
no microphone support
30
really wide (25mm)
built in image stabilization (Sensor-shift)
lighter than average (178 grams)
sluggish max aperture (f3.5)
screen is not selfie friendly
low quality video (1280 x 720 pxls)
missing microphone jack
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Olympus E-M10 IV vs Pentax RZ18 Specifications

Detailed spec comparison table for Olympus E-M10 IV and Pentax RZ18
 Olympus OM-D E-M10 IVPentax Optio RZ18
General Information
Make Olympus Pentax
Model type Olympus OM-D E-M10 IV Pentax Optio RZ18
Class Entry-Level Mirrorless Small Sensor Superzoom
Released 2020-08-04 2011-09-12
Body design SLR-style mirrorless Compact
Sensor Information
Processor Chip TruePic VIII -
Sensor type CMOS CCD
Sensor size Four Thirds 1/2.3"
Sensor measurements 17.4 x 13mm 6.08 x 4.56mm
Sensor surface area 226.2mm² 27.7mm²
Sensor resolution 20 megapixel 16 megapixel
Anti alias filter
Aspect ratio 1:1, 4:3, 3:2 and 16:9 1:1, 4:3 and 16:9
Highest Possible resolution 5184 x 3888 4608 x 3456
Maximum native ISO 25600 6400
Min native ISO 200 80
RAW support
Min enhanced ISO 100 -
Autofocusing
Manual focusing
Autofocus touch
Continuous autofocus
Autofocus single
Tracking autofocus
Autofocus selectice
Autofocus center weighted
Autofocus multi area
Live view autofocus
Face detection autofocus
Contract detection autofocus
Phase detection autofocus
Total focus points 121 9
Lens
Lens support Micro Four Thirds fixed lens
Lens zoom range - 25-450mm (18.0x)
Highest aperture - f/3.5-5.9
Macro focusing range - 4cm
Total lenses 107 -
Focal length multiplier 2.1 5.9
Screen
Range of screen Tilting Fixed Type
Screen sizing 3 inch 3 inch
Screen resolution 1,040 thousand dot 460 thousand dot
Selfie friendly
Liveview
Touch functionality
Screen tech - TFT color LCD with Anti-reflective coating
Viewfinder Information
Viewfinder Electronic None
Viewfinder resolution 2,360 thousand dot -
Viewfinder coverage 100% -
Viewfinder magnification 0.62x -
Features
Minimum shutter speed 60s 4s
Fastest shutter speed 1/4000s 1/2000s
Fastest silent shutter speed 1/16000s -
Continuous shutter speed 8.7fps 1.0fps
Shutter priority
Aperture priority
Manual exposure
Exposure compensation Yes -
Set white balance
Image stabilization
Built-in flash
Flash distance 7.20 m (at ISO 200) 2.80 m
Flash modes Redeye, fill-in, off, redeye slow-sync (1st-curtain), slow sync (1st-curtain), slow sync (2nd-curtain), manual Auto, On, Off, Red-eye, Soft
Hot shoe
AEB
White balance bracketing
Fastest flash sync 1/250s -
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Supported video resolutions 3840 x 2160 @ 30p / 102 Mbps, MOV, H.264, Linear PCM3840 x 2160 @ 25p / 102 Mbps, MOV, H.264, Linear PCM3840 x 2160 @ 24p / 102 Mbps, MOV, H.264, Linear PCM1920 x 1080 @ 60p / 52 Mbps, MOV, H.264, Linear PCM1920 x 1080 @ 50p / 52 Mbps, MOV, H.264, Linear PCM1920 x 1080 @ 30p / 52 Mbps, MOV, H.264, Linear PCM1920 x 1080 @ 25p / 52 Mbps, MOV, H.264, Linear PCM1920 x 1080 @ 24p / 52 Mbps, MOV, H.264, Linear PCM 1280 x 720 (30, 15 fps), 640 x 480 (30, 15 fps), 320 x 240 (30, 15 fps)
Maximum video resolution 3840x2160 1280x720
Video data format MPEG-4, H.264 Motion JPEG
Microphone input
Headphone input
Connectivity
Wireless Built-In Eye-Fi Connected
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS None None
Physical
Environmental seal
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 383 gr (0.84 pounds) 178 gr (0.39 pounds)
Physical dimensions 122 x 84 x 49mm (4.8" x 3.3" x 1.9") 97 x 61 x 33mm (3.8" x 2.4" x 1.3")
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 360 images -
Form of battery Battery Pack -
Battery ID BLS-50 D-LI92
Self timer Yes (2 or 12 sec, custom) Yes (2 or 10 sec)
Time lapse shooting
Storage media SD/SDHC/SDXC (UHS-II supported) SD/SDHC/SDXC, Internal
Storage slots One One
Cost at release $699 $210