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Olympus E-M10 IV vs Pentax E90

Portability
81
Imaging
62
Features
83
Overall
70
Olympus OM-D E-M10 IV front
 
Pentax Optio E90 front
Portability
94
Imaging
33
Features
11
Overall
24

Olympus E-M10 IV vs Pentax E90 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
  • Revealed August 2020
  • Old Model is Olympus E-M10 III
Pentax E90
(Full Review)
  • 10MP - 1/2.3" Sensor
  • 2.7" Fixed Screen
  • ISO 80 - 3200
  • 1280 x 720 video
  • 32-95mm (F3.1-5.9) lens
  • 145g - 102 x 59 x 25mm
  • Released January 2010
Photography Glossary

Olympus E-M10 IV vs Pentax E90 Overview

Below is a detailed comparison of the Olympus E-M10 IV versus Pentax E90, former being a Entry-Level Mirrorless while the latter is a Small Sensor Compact by competitors Olympus and Pentax. There exists a large gap between the sensor resolutions of the E-M10 IV (20MP) and E90 (10MP) and the E-M10 IV (Four Thirds) and E90 (1/2.3") provide different sensor dimensions.

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The E-M10 IV was launched 10 years later than the E90 and that is quite a serious difference as far as technology is concerned. Each of the cameras feature different body design with the Olympus E-M10 IV being a SLR-style mirrorless camera and the Pentax E90 being a Compact camera.

Before delving right into a step-by-step comparison, here is a simple view of how the E-M10 IV scores vs the E90 when it comes to portability, imaging, features and an overall grade.

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Reasons to pick Olympus E-M10 IV over the Pentax E90

 E-M10 IV E90 
ReleasedAugust 2020January 2010More recent by 129 months
Focus manually Dial precise focusing
Screen typeTiltingFixed Tilting screen
Screen size3"2.7"Bigger screen (+0.3")
Screen resolution1040k230kSharper screen (+810k dot)
Selfie screen Take selfies
Touch screen Quickly navigate

Reasons to pick Pentax E90 over the Olympus E-M10 IV

 E90 E-M10 IV 

Common features in the Olympus E-M10 IV and Pentax E90

 E-M10 IV E90 

Olympus E-M10 IV vs Pentax E90 Physical Comparison

In case you're planning to lug around your camera, you'll need to take into account its weight and dimensions. The Olympus E-M10 IV features physical measurements of 122mm x 84mm x 49mm (4.8" x 3.3" x 1.9") having a weight of 383 grams (0.84 lbs) while the Pentax E90 has dimensions of 102mm x 59mm x 25mm (4.0" x 2.3" x 1.0") along with a weight of 145 grams (0.32 lbs).

Look at the Olympus E-M10 IV versus Pentax E90 in our newest Camera & Lens Size Comparison Tool. Camera Size Comparison with Lenses

Remember, the weight of an ILC will differ based on the lens you have at the time. Below is a front view measurement comparison of the E-M10 IV against the E90.

Olympus E-M10 IV vs Pentax E90 size comparison

Factoring in dimensions and weight, the portability score of the E-M10 IV and E90 is 81 and 94 respectively.

Olympus E-M10 IV vs Pentax E90 top view buttons comparison

Olympus E-M10 IV vs Pentax E90 Sensor Comparison

Typically, it's hard to visualize the contrast between sensor measurements just by going over specifications. The graphic here may offer you a more clear sense of the sensor sizing in the E-M10 IV and E90.

To sum up, both of those cameras come with different megapixels and different sensor measurements. The E-M10 IV featuring a bigger sensor is going to make getting bokeh easier and the Olympus E-M10 IV will offer you extra detail utilizing its extra 10MP. Higher resolution can also allow you to crop pictures a good deal more aggressively. The newer E-M10 IV provides an advantage with regard to sensor tech.

Olympus E-M10 IV vs Pentax E90 sensor size comparison

Olympus E-M10 IV vs Pentax E90 Screen and ViewFinder

Olympus E-M10 IV vs Pentax E90 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Olympus E-M10 IV as a Portrait photography camera
Pentax E90 as a Portrait photography camera
77
you can focus manually
MP count decent (20 megapixels)
good sensor size (Four Thirds)
features face detect focus
supports RAW formats
19
no manual focus
no manual exposure
can't use external flash
sensor resolution not great (10 megapixels)
sensor is small (1/2.3")
lacks RAW format
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Street Comparison

Olympus E-M10 IV Street photography features
Pentax E90 Street photography features
84
screen tilts
image stabilization (Sensor based 5-axis)
good sensor size (Four Thirds)
supports RAW formats
comes with focus via touch
above average high ISO (25,600)
47
no articulating screen
does not have image stabilization
sensor is small (1/2.3")
lacks RAW format
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Sports Comparison

Olympus E-M10 IV Sports photography factors
Pentax E90 Sports photography factors
72
silent shooting (1/16,000 seconds)
image stabilization (Sensor based 5-axis)
MP count decent (20MP)
good sensor size (Four Thirds)
features tracking focus
no phase detect auto focus
16
no shutter priority
does not have image stabilization
sensor resolution not great (10 megapixels)
sensor is small (1/2.3")
lacks phase detect auto focus
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Travel Comparison

Travel photography with Olympus E-M10 IV
Travel photography with Pentax E90
84
supports bluetooth
comes with focus via touch
MP count decent (20 megapixels)
flash built-in
selfie friendly screen
50
has built in flash
does not have Time Lapse recording
sensor resolution not great (10MP)
does not have a selfie friendly screen
wide angle not good (32mm)
somewhat slow maximum aperture (f3.1)
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Landscape Comparison

Landscape photography with Olympus E-M10 IV
Landscape photography with Pentax E90
82
you can focus manually
change lenses (Micro Four Thirds mount)
nice screen size (3")
image stabilization (Sensor based 5-axis)
MP count decent (20 megapixels)
good sensor size (Four Thirds)
above average high ISO (25,600)
supports RAW formats
22
no manual focus
lens is fixed (fixed lens mount)
wide angle not good (32mm)
somewhat slow maximum aperture (f3.1)
screen is somewhat small (2.7 inch)
no manual exposure
does not have image stabilization
sensor resolution not great (10MP)
sensor is small (1/2.3")
lacks RAW format
does not have Time Lapse recording
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Vlogging Comparison

Olympus E-M10 IV Vlogging details
Pentax E90 Vlogging details
78
selfie friendly screen
touchscreen
image stabilization (Sensor based 5-axis)
features face detect focus
high quality video (3840 x 2160 pixels)
lack of mic socket
22
wide angle not good (32mm)
somewhat slow maximum aperture (f3.1)
does not have a selfie friendly screen
does not have image stabilization
video quality not great (1280 x 720 pxls)
does not have external mic support
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Olympus E-M10 IV vs Pentax E90 Specifications

Detailed spec comparison table for Olympus E-M10 IV and Pentax E90
 Olympus OM-D E-M10 IVPentax Optio E90
General Information
Brand Olympus Pentax
Model Olympus OM-D E-M10 IV Pentax Optio E90
Class Entry-Level Mirrorless Small Sensor Compact
Revealed 2020-08-04 2010-01-25
Physical type SLR-style mirrorless Compact
Sensor Information
Powered by TruePic VIII Prime
Sensor type CMOS CCD
Sensor size Four Thirds 1/2.3"
Sensor dimensions 17.4 x 13mm 6.08 x 4.56mm
Sensor area 226.2mm² 27.7mm²
Sensor resolution 20 megapixels 10 megapixels
Anti aliasing filter
Aspect ratio 1:1, 4:3, 3:2 and 16:9 4:3 and 16:9
Highest Possible resolution 5184 x 3888 3648 x 2736
Maximum native ISO 25600 3200
Min native ISO 200 80
RAW pictures
Min enhanced ISO 100 -
Autofocusing
Manual focus
Autofocus touch
Autofocus continuous
Autofocus single
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 3
Lens
Lens mounting type Micro Four Thirds fixed lens
Lens focal range - 32-95mm (3.0x)
Largest aperture - f/3.1-5.9
Macro focus distance - 6cm
Number of lenses 107 -
Focal length multiplier 2.1 5.9
Screen
Type of screen Tilting Fixed Type
Screen diagonal 3 inches 2.7 inches
Screen resolution 1,040 thousand dots 230 thousand dots
Selfie friendly
Liveview
Touch capability
Viewfinder Information
Viewfinder Electronic None
Viewfinder resolution 2,360 thousand dots -
Viewfinder coverage 100% -
Viewfinder magnification 0.62x -
Features
Min shutter speed 60 secs 4 secs
Max shutter speed 1/4000 secs 1/2000 secs
Max silent shutter speed 1/16000 secs -
Continuous shutter rate 8.7 frames/s -
Shutter priority
Aperture priority
Expose Manually
Exposure compensation Yes -
Change white balance
Image stabilization
Inbuilt flash
Flash range 7.20 m (at ISO 200) 3.50 m
Flash settings Redeye, fill-in, off, redeye slow-sync (1st-curtain), slow sync (1st-curtain), slow sync (2nd-curtain), manual -
Hot shoe
AEB
White balance bracketing
Max 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 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 (15 fps), 848 x 480 (30 fps), 640 x 480 (30 fps), 320 x 240 (30 fps)
Maximum video resolution 3840x2160 1280x720
Video data format MPEG-4, H.264 Motion JPEG
Mic support
Headphone support
Connectivity
Wireless Built-In None
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS None None
Physical
Environmental sealing
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 383 gr (0.84 lb) 145 gr (0.32 lb)
Physical dimensions 122 x 84 x 49mm (4.8" x 3.3" x 1.9") 102 x 59 x 25mm (4.0" x 2.3" x 1.0")
DXO scores
DXO Overall 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 360 shots -
Style of battery Battery Pack -
Battery model BLS-50 2 x AA
Self timer Yes (2 or 12 sec, custom) Yes (2 or 10 sec)
Time lapse recording
Storage type SD/SDHC/SDXC (UHS-II supported) SD/SDHC, Internal
Card slots Single Single
Price at release $699 $100