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Olympus E-3 vs Pentax K-7

Portability
56
Imaging
45
Features
56
Overall
49
Olympus E-3 front
 
Pentax K-7 front
Portability
60
Imaging
55
Features
69
Overall
60

Olympus E-3 vs Pentax K-7 Key Specs

Olympus E-3
(Full Review)
  • 10MP - Four Thirds Sensor
  • 2.5" Fully Articulated Screen
  • ISO 100 - 3200
  • Sensor based Image Stabilization
  • 1/8000s Maximum Shutter
  • No Video
  • Micro Four Thirds Mount
  • 890g - 142 x 116 x 75mm
  • Announced February 2008
  • Replaced the Olympus E-1
  • Newer Model is Olympus E-5
Pentax K-7
(Full Review)
  • 15MP - APS-C Sensor
  • 3" Fixed Screen
  • ISO 100 - 2000 (Boost to 6400)
  • Sensor based Image Stabilization
  • 1/8000s Max Shutter
  • 1280 x 720 video
  • Pentax KAF2 Mount
  • 750g - 131 x 97 x 73mm
  • Released October 2009
  • Renewed by Pentax K-5
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Olympus E-3 vs Pentax K-7 Overview

Here is a comprehensive comparison of the Olympus E-3 vs Pentax K-7, both Advanced DSLR digital cameras by companies Olympus and Pentax. There is a crucial difference between the image resolutions of the E-3 (10MP) and K-7 (15MP) and the E-3 (Four Thirds) and K-7 (APS-C) come with different sensor measurements.

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The E-3 was unveiled 19 months before the K-7 which makes the cameras a generation apart from each other. Each of the cameras offer the identical body type (Mid-size SLR).

Before getting through a full comparison, below is a short view of how the E-3 scores against the K-7 when it comes to portability, imaging, features and an overall rating.

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Reasons to pick Olympus E-3 over the Pentax K-7

 E-3 K-7 
Screen typeFully ArticulatedFixed Fully Articulating screen
Selfie screen Easy selfies

Reasons to pick Pentax K-7 over the Olympus E-3

 K-7 E-3 
ReleasedOctober 2009February 2008Fresher by 19 months
Screen sizing3"2.5"Bigger screen (+0.5")
Screen resolution921k230kCrisper screen (+691k dot)

Common features in the Olympus E-3 and Pentax K-7

 E-3 K-7 
Manual focus More exact focus
Touch screen Neither comes with Touch screen

Olympus E-3 vs Pentax K-7 Physical Comparison

In case you're looking to carry your camera, you'll need to factor in its weight and proportions. The Olympus E-3 comes with outer dimensions of 142mm x 116mm x 75mm (5.6" x 4.6" x 3.0") and a weight of 890 grams (1.96 lbs) whilst the Pentax K-7 has measurements of 131mm x 97mm x 73mm (5.2" x 3.8" x 2.9") with a weight of 750 grams (1.65 lbs).

Check the Olympus E-3 vs Pentax K-7 in the new Camera and Lens Size Comparison Tool. Camera Size Comparison with Lenses

Take into consideration, the weight of an Interchangeable Lens Camera will vary depending on the lens you are utilising at the time. Below is the front view over all size comparison of the E-3 compared to the K-7.

Olympus E-3 vs Pentax K-7 size comparison

Considering size and weight, the portability grade of the E-3 and K-7 is 56 and 60 respectively.

Olympus E-3 vs Pentax K-7 top view buttons comparison

Olympus E-3 vs Pentax K-7 Sensor Comparison

Oftentimes, it is very hard to visualize the difference between sensor sizing purely by going over specifications. The photograph here might give you a far better sense of the sensor dimensions in the E-3 and K-7.

Plainly, each of these cameras offer different megapixels and different sensor sizing. The E-3 with its tinier sensor is going to make getting shallower depth of field more challenging and the Pentax K-7 will offer you more detail having an extra 5 Megapixels. Higher resolution will help you crop shots a little more aggressively. The older E-3 is going to be disadvantaged with regard to sensor technology.

Olympus E-3 vs Pentax K-7 sensor size comparison

Olympus E-3 vs Pentax K-7 Screen and ViewFinder

Olympus E-3 vs Pentax K-7 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Portrait photography with Olympus E-3
Portrait photography with Pentax K-7
57
you can focus manually
nice sensor size (Four Thirds)
exports RAW formats
sensor resolution not great (10MP)
73
you can focus manually
decent megapixels (15MP)
nice sensor size (APS-C)
supports face detection autofocus
delivers RAW files
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Street Comparison

Olympus E-3 Street photography details
Pentax K-7 Street photography details
70
screen can move to multiple angles
has image stabilization (Sensor based)
nice sensor size (Four Thirds)
exports RAW formats
weather proofing
66
built in image stabilization (Sensor based)
nice sensor size (APS-C)
delivers RAW files
environment proof
fixed screen
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Sports Comparison

Olympus E-3 Sports photography highlights
Pentax K-7 Sports photography highlights
58
maximum shutter speed is high (1/8,000s)
has image stabilization (Sensor based)
nice sensor size (Four Thirds)
weather proofing
supports phase detect autofocus
max frames per second low (5.0 frames per second)
sensor resolution not great (10MP)
70
high shutter speed (1/8,000s)
built in image stabilization (Sensor based)
decent megapixels (15MP)
nice sensor size (APS-C)
environment proof
comes with phase detect autofocus
very slow continuous shooting (5.0 frames per second)
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Travel Comparison

Olympus E-3 as a Travel photography camera
Pentax K-7 as a Travel photography camera
55
weather proofing
has built in flash
selfie friendly screen
does not have Time Lapse mode
sensor resolution not great (10 megapixels)
65
environment proof
decent megapixels (15 megapixels)
has built in flash
screen isn't selfie friendly
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Landscape Comparison

Olympus E-3 as a Landscape photography camera
Pentax K-7 as a Landscape photography camera
56
you can focus manually
change lenses (Micro Four Thirds mount)
has image stabilization (Sensor based)
nice sensor size (Four Thirds)
exports RAW formats
weather proofing
screen is small (2.5 inches)
sensor resolution not great (10MP)
does not have Time Lapse mode
78
you can focus manually
change lenses (Pentax KAF2 mount)
screen size is good (3")
built in image stabilization (Sensor based)
decent megapixels (15 megapixels)
nice sensor size (APS-C)
delivers RAW files
environment proof
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Vlogging Comparison

Olympus E-3 as a Vlogging camera
Pentax K-7 as a Vlogging camera
18
no video recording
25
built in image stabilization (Sensor based)
supports face detection autofocus
screen isn't selfie friendly
video quality not great (1280 x 720 resolution)
doesn't have external microphone port
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Olympus E-3 vs Pentax K-7 Specifications

Detailed spec comparison table for Olympus E-3 and Pentax K-7
 Olympus E-3Pentax K-7
General Information
Make Olympus Pentax
Model Olympus E-3 Pentax K-7
Class Advanced DSLR Advanced DSLR
Announced 2008-02-20 2009-10-02
Body design Mid-size SLR Mid-size SLR
Sensor Information
Powered by TruePic III Prime II
Sensor type CMOS CMOS
Sensor size Four Thirds APS-C
Sensor measurements 17.3 x 13mm 23.4 x 15.6mm
Sensor surface area 224.9mm² 365.0mm²
Sensor resolution 10 megapixels 15 megapixels
Anti aliasing filter
Aspect ratio 4:3 3:2
Highest Possible resolution 3648 x 2736 4672 x 3104
Maximum native ISO 3200 2000
Maximum enhanced ISO - 6400
Min native ISO 100 100
RAW images
Autofocusing
Focus manually
Touch to focus
AF continuous
AF single
AF tracking
AF selectice
Center weighted AF
Multi area AF
Live view AF
Face detection focusing
Contract detection focusing
Phase detection focusing
Number of focus points 11 11
Lens
Lens mounting type Micro Four Thirds Pentax KAF2
Number of lenses 45 151
Focal length multiplier 2.1 1.5
Screen
Range of screen Fully Articulated Fixed Type
Screen size 2.5" 3"
Resolution of screen 230 thousand dot 921 thousand dot
Selfie friendly
Liveview
Touch functionality
Screen tech - TFT color LCD with AR coating
Viewfinder Information
Viewfinder type Optical (pentaprism) Optical (pentaprism)
Viewfinder coverage 100% 100%
Viewfinder magnification 0.58x 0.61x
Features
Minimum shutter speed 60s 30s
Fastest shutter speed 1/8000s 1/8000s
Continuous shutter speed 5.0 frames/s 5.0 frames/s
Shutter priority
Aperture priority
Expose Manually
Exposure compensation Yes Yes
Change WB
Image stabilization
Inbuilt flash
Flash range 13.00 m 13.00 m
Flash settings Auto, Auto FP, Manual, Red-Eye Auto, On, Off, Red-eye, Slow Sync, Rear Curtain, Wireless
External flash
Auto exposure bracketing
WB bracketing
Fastest flash sync 1/250s 1/180s
Exposure
Multisegment
Average
Spot
Partial
AF area
Center weighted
Video features
Supported video resolutions - 1280 x 720 (30 fps), 1536 x 1024 (30 fps), 640 x 480 (30 fps), 320 x 240 (30 fps)
Maximum video resolution None 1280x720
Video file format - Motion JPEG
Microphone jack
Headphone jack
Connectivity
Wireless None None
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS None None
Physical
Environmental seal
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 890g (1.96 pounds) 750g (1.65 pounds)
Dimensions 142 x 116 x 75mm (5.6" x 4.6" x 3.0") 131 x 97 x 73mm (5.2" x 3.8" x 2.9")
DXO scores
DXO Overall score 56 61
DXO Color Depth score 21.6 22.6
DXO Dynamic range score 10.5 10.6
DXO Low light score 571 536
Other
Battery life - 980 photos
Battery form - Battery Pack
Battery model - D-LI90
Self timer Yes (2 or 12 sec) Yes (2 or 10 sec)
Time lapse shooting
Storage media Compact Flash (Type I or II), xD Picture Card SD/SDHC/MMC
Storage slots 1 1
Launch pricing $670 $599