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Olympus E-M10 vs Pentax 645D

Portability
82
Imaging
53
Features
73
Overall
61
Olympus OM-D E-M10 front
 
Pentax 645D front
Portability
50
Imaging
76
Features
52
Overall
66

Olympus E-M10 vs Pentax 645D Key Specs

Olympus E-M10
(Full Review)
  • 16MP - Four Thirds Sensor
  • 3" Tilting Display
  • ISO 200 - 25600
  • Sensor based Image Stabilization
  • 1920 x 1080 video
  • Micro Four Thirds Mount
  • 396g - 119 x 82 x 46mm
  • Introduced March 2014
  • Later Model is Olympus E-M10 II
Pentax 645D
(Full Review)
  • 40MP - Medium format Sensor
  • 3" Fixed Display
  • ISO 200 - 1600
  • No Anti-Alias Filter
  • No Video
  • Pentax 645AF2 Mount
  • 1480g - 156 x 117 x 119mm
  • Announced March 2010
  • Replacement is Pentax 645Z
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Olympus E-M10 vs Pentax 645D Overview

Below is a in-depth analysis of the Olympus E-M10 vs Pentax 645D, one being a Entry-Level Mirrorless and the other is a Pro DSLR by rivals Olympus and Pentax. There exists a sizeable gap among the image resolutions of the E-M10 (16MP) and 645D (40MP) and the E-M10 (Four Thirds) and 645D (Medium format) boast totally different sensor dimensions.

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The E-M10 was revealed 4 years later than the 645D and that is a fairly large gap as far as camera technology is concerned. The two cameras have different body design with the Olympus E-M10 being a SLR-style mirrorless camera and the Pentax 645D being a Large SLR camera.

Before getting into a in depth comparison, here is a brief highlight of how the E-M10 grades versus the 645D with respect to portability, imaging, features and an overall grade.

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Reasons to pick Olympus E-M10 over the Pentax 645D

 E-M10 645D 
AnnouncedMarch 2014March 2010More recent by 49 months
Display typeTiltingFixed Tilting display
Display resolution1037k921kCrisper display (+116k dot)
Touch friendly display Easily navigate

Reasons to pick Pentax 645D over the Olympus E-M10

 645D E-M10 

Common features in the Olympus E-M10 and Pentax 645D

 E-M10 645D 
Manual focus Dial precise focus
Display dimensions3"3"Equal display sizing
Selfie screen Neither contains selfie screen

Olympus E-M10 vs Pentax 645D Physical Comparison

In case you're going to lug around your camera, you will have to factor its weight and measurements. The Olympus E-M10 has got external measurements of 119mm x 82mm x 46mm (4.7" x 3.2" x 1.8") accompanied by a weight of 396 grams (0.87 lbs) whilst the Pentax 645D has proportions of 156mm x 117mm x 119mm (6.1" x 4.6" x 4.7") accompanied by a weight of 1480 grams (3.26 lbs).

Examine the Olympus E-M10 vs Pentax 645D in the latest Camera with Lens Size Comparison Tool. Camera Size Comparison with Lenses

Take into account, the weight of an Interchangeable Lens Camera will vary dependant on the lens you have chosen at that time. Here is a front view sizing comparison of the E-M10 against the 645D.

Olympus E-M10 vs Pentax 645D size comparison

Taking into consideration dimensions and weight, the portability rating of the E-M10 and 645D is 82 and 50 respectively.

Olympus E-M10 vs Pentax 645D top view buttons comparison

Olympus E-M10 vs Pentax 645D Sensor Comparison

Sometimes, it is tough to see the gap in sensor measurements only by checking out specs. The graphic underneath will provide you a far better sense of the sensor measurements in the E-M10 and 645D.

All in all, both cameras provide different megapixels and different sensor measurements. The E-M10 with its smaller sensor will make getting bokeh more challenging and the Pentax 645D will provide more detail because of its extra 24MP. Greater resolution will allow you to crop pics more aggressively. The fresher E-M10 is going to have an edge in sensor technology.

Olympus E-M10 vs Pentax 645D sensor size comparison

Olympus E-M10 vs Pentax 645D Screen and ViewFinder

Olympus E-M10 vs Pentax 645D Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Olympus E-M10 Portrait photography factors
Pentax 645D Portrait photography factors
71
focusing manually
good megapixels (16 megapixels)
nice sensor size (Four Thirds)
includes face detect focus
supports RAW files
77
has manual focus
resolution is excellent (40 megapixels)
large sensor size (Medium format)
saves RAW formats
no liveview feature
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Street Comparison

Street photography with Olympus E-M10
Street photography with Pentax 645D
77
tilting screen
has image stabilization (Sensor based)
nice sensor size (Four Thirds)
supports RAW files
provides focus by touch
good ISO range (25,600)
more heavy than competition in class (396g)
58
large sensor size (Medium format)
saves RAW formats
environment proof
fixed screen
no image stabilization
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Sports Comparison

Olympus E-M10 Sports photography info
Pentax 645D Sports photography info
66
has image stabilization (Sensor based)
good megapixels (16 megapixels)
nice sensor size (Four Thirds)
includes tracking focus
lacks phase detect auto focus
63
resolution is excellent (40MP)
large sensor size (Medium format)
environment proof
sensor has phase detect autofocus
no liveview feature
slow frames per second (1.0 frames per second)
no image stabilization
bad battery (800 per charge)
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Travel Comparison

Olympus E-M10 Travel photography factors
Pentax 645D Travel photography factors
67
provides focus by touch
good megapixels (16 megapixels)
built-in flash
more heavy than competition in class (396 grams)
display isn't selfie friendly
55
environment proof
resolution is excellent (40MP)
bad battery (800 per charge)
doesn't offer selfie friendly display
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Landscape Comparison

Olympus E-M10 Landscape photography factors
Pentax 645D Landscape photography factors
79
focusing manually
interchangeable lenses (Micro Four Thirds mount)
screen size is good (3")
has image stabilization (Sensor based)
good megapixels (16 megapixels)
nice sensor size (Four Thirds)
good ISO range (25,600)
supports RAW files
72
has manual focus
switch lenses (Pentax 645AF2 mount)
pretty good screen size (3")
resolution is excellent (40 megapixels)
large sensor size (Medium format)
no anti-alias filter
saves RAW formats
environment proof
2 card slots
no liveview feature
no image stabilization
bad battery (800 per charge)
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Vlogging Comparison

Olympus E-M10 Vlogging details
Pentax 645D Vlogging details
33
has touchscreen
has image stabilization (Sensor based)
includes face detect focus
video res high (1920 x 1080 pixels)
display isn't selfie friendly
doesn't have microphone jack
more heavy than competition in class (396g)
9
lack of video recording
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Olympus E-M10 vs Pentax 645D Specifications

Detailed spec comparison table for Olympus E-M10 and Pentax 645D
 Olympus OM-D E-M10Pentax 645D
General Information
Manufacturer Olympus Pentax
Model type Olympus OM-D E-M10 Pentax 645D
Category Entry-Level Mirrorless Pro DSLR
Introduced 2014-03-18 2010-03-10
Physical type SLR-style mirrorless Large SLR
Sensor Information
Chip TruePic VII Prime II
Sensor type CMOS CCD
Sensor size Four Thirds Medium format
Sensor measurements 17.3 x 13mm 44 x 33mm
Sensor area 224.9mm² 1,452.0mm²
Sensor resolution 16 megapixel 40 megapixel
Anti alias filter
Aspect ratio 1:1, 4:3, 3:2 and 16:9 4:3
Full resolution 4608 x 3456 7264 x 5440
Max native ISO 25600 1600
Minimum native ISO 200 200
RAW photos
Minimum boosted ISO - 100
Autofocusing
Manual focusing
Autofocus touch
Autofocus continuous
Autofocus single
Tracking autofocus
Autofocus selectice
Center weighted autofocus
Multi area autofocus
Live view autofocus
Face detect autofocus
Contract detect autofocus
Phase detect autofocus
Total focus points 81 11
Lens
Lens support Micro Four Thirds Pentax 645AF2
Amount of lenses 107 6
Focal length multiplier 2.1 0.8
Screen
Type of display Tilting Fixed Type
Display size 3 inch 3 inch
Display resolution 1,037k dots 921k dots
Selfie friendly
Liveview
Touch capability
Display tech TFT LCD TFT Color LCD with wide-viewing angle and with AR coating
Viewfinder Information
Viewfinder Electronic Optical (pentaprism)
Viewfinder resolution 1,440k dots -
Viewfinder coverage 100 percent 98 percent
Viewfinder magnification 0.58x 0.85x
Features
Slowest shutter speed 60s 30s
Maximum shutter speed 1/4000s 1/4000s
Continuous shooting rate 8.0 frames/s 1.0 frames/s
Shutter priority
Aperture priority
Manual mode
Exposure compensation Yes Yes
Custom white balance
Image stabilization
Integrated flash
Flash distance 5.80 m (ISO100) no built-in flash
Flash settings Flash Auto, Redeye, Fill-in, Flash Off, Red-eye Slow sync.(1st curtain), Slow sync.(1st curtain), Slow sync.(2nd curtain), Manual(1/1(FULL)~1/64) Auto, On, Off, Red-eye, Slow Sync, Rear Curtain
Hot shoe
Auto exposure bracketing
WB bracketing
Maximum flash synchronize 1/250s 1/125s
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Supported video resolutions 1920 x 1080 (30p), 1280 x 720 (30p), 640 x 480 (30 fps) -
Max video resolution 1920x1080 None
Video data format H.264, Motion JPEG -
Microphone 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 Optional None
Physical
Environmental sealing
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 396g (0.87 pounds) 1480g (3.26 pounds)
Physical dimensions 119 x 82 x 46mm (4.7" x 3.2" x 1.8") 156 x 117 x 119mm (6.1" x 4.6" x 4.7")
DXO scores
DXO All around rating 72 82
DXO Color Depth rating 22.8 24.6
DXO Dynamic range rating 12.3 12.6
DXO Low light rating 884 1262
Other
Battery life 320 pictures 800 pictures
Style of battery Battery Pack Battery Pack
Battery ID BLS-5 D-LI90
Self timer Yes (12 sec., 2 sec.,custom (Waiting time 1-30sec.,Shooting interval 0.5/1/2/3sec.,Number of shots 1-10)) Yes (2 or 10 sec)
Time lapse shooting
Storage type SD/SDHC/SDXC SD/SDHC
Card slots One Two
Retail price $600 $4,000