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Olympus E-3 vs Pentax K100D S

Portability
56
Imaging
44
Features
56
Overall
48
Olympus E-3 front
 
Pentax K100D Super front
Portability
65
Imaging
45
Features
38
Overall
42

Olympus E-3 vs Pentax K100D S Key Specs

Olympus E-3
(Full Review)
  • 10MP - Four Thirds Sensor
  • 2.5" Fully Articulated Display
  • ISO 100 - 3200
  • Sensor based Image Stabilization
  • 1/8000s Maximum Shutter
  • No Video
  • Micro Four Thirds Mount
  • 890g - 142 x 116 x 75mm
  • Introduced February 2008
  • Previous Model is Olympus E-1
  • Newer Model is Olympus E-5
Pentax K100D S
(Full Review)
  • 6MP - APS-C Sensor
  • 2.5" Fixed Display
  • ISO 200 - 3200
  • Sensor based Image Stabilization
  • No Video
  • Pentax KAF2 Mount
  • 646g - 129 x 91 x 71mm
  • Released June 2007
  • Old Model is Pentax K100D
  • Successor is Pentax K200D
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Olympus E-3 vs Pentax K100D S Overview

Let's take a more detailed look at the Olympus E-3 versus Pentax K100D S, one is a Advanced DSLR and the other is a Entry-Level DSLR by manufacturers Olympus and Pentax. There exists a significant gap between the resolutions of the E-3 (10MP) and K100D S (6MP) and the E-3 (Four Thirds) and K100D S (APS-C) boast different sensor sizing.

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The E-3 was announced 8 months after the K100D S which means that they are of a similar generation. Both cameras have different body design with the Olympus E-3 being a Mid-size SLR camera and the Pentax K100D S being a Compact SLR camera.

Before delving into a thorough comparison, here is a brief synopsis of how the E-3 grades versus the K100D S for portability, imaging, features and an overall score.

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Reasons to pick Olympus E-3 over the Pentax K100D S

 E-3 K100D S 
ReleasedFebruary 2008June 2007More modern by 8 months
Display typeFully ArticulatedFixed Fully Articulating display
Display resolution230k210kClearer display (+20k dot)
Selfie screen Take selfies

Reasons to pick Pentax K100D S over the Olympus E-3

 K100D S E-3 

Common features in the Olympus E-3 and Pentax K100D S

 E-3 K100D S 
Manual focus Very exact focus
Display dimensions2.5"2.5"Equal display measurement
Touch friendly display Neither contains Touch friendly display

Olympus E-3 vs Pentax K100D S Physical Comparison

For anybody who is looking to carry around your camera regularly, you'll need to take into account its weight and size. The Olympus E-3 has got outside dimensions of 142mm x 116mm x 75mm (5.6" x 4.6" x 3.0") accompanied by a weight of 890 grams (1.96 lbs) whilst the Pentax K100D S has specifications of 129mm x 91mm x 71mm (5.1" x 3.6" x 2.8") accompanied by a weight of 646 grams (1.42 lbs).

Look at the Olympus E-3 versus Pentax K100D S in the latest Camera with Lens Size Comparison Tool. Camera Size Comparison with Lenses

Remember, the weight of an Interchangeable Lens Camera will change depending on the lens you have attached at the time. Underneath is a front view measurement comparison of the E-3 compared to the K100D S.

Olympus E-3 vs Pentax K100D S size comparison

Looking at dimensions and weight, the portability score of the E-3 and K100D S is 56 and 65 respectively.

Olympus E-3 vs Pentax K100D S top view buttons comparison

Olympus E-3 vs Pentax K100D S Sensor Comparison

Sometimes, it is very difficult to imagine the difference between sensor sizes just by reading through specs. The image below might provide you a more clear sense of the sensor dimensions in the E-3 and K100D S.

As you can plainly see, the two cameras have different megapixels and different sensor sizes. The E-3 having a tinier sensor is going to make achieving shallow depth of field more challenging and the Olympus E-3 will give more detail with its extra 4MP. Greater resolution will allow you to crop photos a bit more aggressively. The more recent E-3 provides an advantage when it comes to sensor innovation.

Olympus E-3 vs Pentax K100D S sensor size comparison

Olympus E-3 vs Pentax K100D S Screen and ViewFinder

Olympus E-3 vs Pentax K100D S Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Olympus E-3 Portrait photography details
Pentax K100D S Portrait photography details
56
focusing manually
decent sensor size (Four Thirds)
saves RAW formats
low MP (10MP)
51
focusing manually
decent sensor size (APS-C)
delivers RAW files
no liveview
MP count low (6 megapixels)
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Street Comparison

Olympus E-3 Street photography highlights
Pentax K100D S Street photography highlights
69
fully articulated screen
built in image stabilization (Sensor based)
decent sensor size (Four Thirds)
saves RAW formats
weather sealing
64
has image stabilization (Sensor based)
decent sensor size (APS-C)
delivers RAW files
fixed screen
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Sports Comparison

Sports photography with Olympus E-3
Sports photography with Pentax K100D S
57
great max shutter speed (1/8,000s)
built in image stabilization (Sensor based)
decent sensor size (Four Thirds)
weather sealing
sensor has phase detect AF
low frames per second (5.0 fps)
low MP (10MP)
47
has image stabilization (Sensor based)
decent sensor size (APS-C)
comes with phase detect AF
no liveview
max fps low (3.0 frames/s)
MP count low (6 megapixels)
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Travel Comparison

Olympus E-3 Travel photography advice
Pentax K100D S Travel photography advice
55
weather sealing
flash built-in
display is selfie friendly
no Time Lapse recording
low MP (10 megapixels)
45
has built in flash
does not have Time Lapse recording
MP count low (6MP)
display isn't selfie friendly
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Landscape Comparison

Landscape photography with Olympus E-3
Landscape photography with Pentax K100D S
56
focusing manually
interchangeable lenses (Micro Four Thirds mount)
built in image stabilization (Sensor based)
decent sensor size (Four Thirds)
saves RAW formats
weather sealing
screen is somewhat small (2.5 inches)
low MP (10MP)
no Time Lapse recording
52
focusing manually
switch lenses (Pentax KAF2 mount)
has image stabilization (Sensor based)
decent sensor size (APS-C)
delivers RAW files
screen is small (2.5 inch)
no liveview
MP count low (6MP)
does not have Time Lapse recording
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Vlogging Comparison

Olympus E-3 Vlogging highlights
Pentax K100D S Vlogging highlights
18
can't record video
9
can't record video
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Olympus E-3 vs Pentax K100D S Specifications

Detailed spec comparison table for Olympus E-3 and Pentax K100D S
 Olympus E-3Pentax K100D Super
General Information
Make Olympus Pentax
Model Olympus E-3 Pentax K100D Super
Type Advanced DSLR Entry-Level DSLR
Introduced 2008-02-20 2007-06-28
Body design Mid-size SLR Compact SLR
Sensor Information
Chip TruePic III -
Sensor type CMOS CCD
Sensor size Four Thirds APS-C
Sensor dimensions 17.3 x 13mm 23.5 x 15.7mm
Sensor area 224.9mm² 369.0mm²
Sensor resolution 10MP 6MP
Anti aliasing filter
Aspect ratio 4:3 3:2
Peak resolution 3648 x 2736 3008 x 2008
Highest native ISO 3200 3200
Min native ISO 100 200
RAW images
Autofocusing
Manual focus
Touch to focus
AF continuous
AF single
Tracking AF
Selective AF
Center weighted AF
Multi area AF
AF live view
Face detect AF
Contract detect AF
Phase detect AF
Number of focus points 11 11
Lens
Lens mount Micro Four Thirds Pentax KAF2
Amount of lenses 45 151
Crop factor 2.1 1.5
Screen
Range of display Fully Articulated Fixed Type
Display diagonal 2.5 inch 2.5 inch
Display resolution 230k dot 210k dot
Selfie friendly
Liveview
Touch operation
Viewfinder Information
Viewfinder type Optical (pentaprism) Optical (pentamirror)
Viewfinder coverage 100 percent 96 percent
Viewfinder magnification 0.58x 0.57x
Features
Minimum shutter speed 60 seconds 30 seconds
Fastest shutter speed 1/8000 seconds 1/4000 seconds
Continuous shutter speed 5.0 frames per second 3.0 frames per second
Shutter priority
Aperture priority
Manual exposure
Exposure compensation Yes Yes
Change WB
Image stabilization
Integrated flash
Flash range 13.00 m -
Flash options Auto, Auto FP, Manual, Red-Eye Auto, On, Off, Red-eye reduction
External flash
Auto exposure bracketing
WB bracketing
Fastest flash sync 1/250 seconds 1/180 seconds
Exposure
Multisegment
Average
Spot
Partial
AF area
Center weighted
Video features
Highest video resolution None None
Mic input
Headphone input
Connectivity
Wireless None None
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS None None
Physical
Environment seal
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 890 gr (1.96 pounds) 646 gr (1.42 pounds)
Physical dimensions 142 x 116 x 75mm (5.6" x 4.6" x 3.0") 129 x 91 x 71mm (5.1" x 3.6" x 2.8")
DXO scores
DXO Overall score 56 not tested
DXO Color Depth score 21.6 not tested
DXO Dynamic range score 10.5 not tested
DXO Low light score 571 not tested
Other
Battery model - 4 x AA
Self timer Yes (2 or 12 sec) Yes (2 or 12 sec)
Time lapse feature
Type of storage Compact Flash (Type I or II), xD Picture Card SD/SDHC card
Storage slots 1 1
Cost at release $670 $520