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Olympus E-420 vs Pentax K100D S

Portability
77
Imaging
45
Features
36
Overall
41
Olympus E-420 front
 
Pentax K100D Super front
Portability
65
Imaging
45
Features
38
Overall
42

Olympus E-420 vs Pentax K100D S Key Specs

Olympus E-420
(Full Review)
  • 10MP - Four Thirds Sensor
  • 2.7" Fixed Screen
  • ISO 100 - 1600
  • No Video
  • Micro Four Thirds Mount
  • 426g - 130 x 91 x 53mm
  • Introduced June 2008
  • Previous Model is Olympus E-410
Pentax K100D S
(Full Review)
  • 6MP - APS-C Sensor
  • 2.5" Fixed Screen
  • ISO 200 - 3200
  • Sensor based Image Stabilization
  • No Video
  • Pentax KAF2 Mount
  • 646g - 129 x 91 x 71mm
  • Revealed June 2007
  • Old Model is Pentax K100D
  • New Model is Pentax K200D
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Olympus E-420 vs Pentax K100D S Overview

Following is a complete review of the Olympus E-420 and Pentax K100D S, both Entry-Level DSLR digital cameras by companies Olympus and Pentax. There is a noticeable difference between the sensor resolutions of the E-420 (10MP) and K100D S (6MP) and the E-420 (Four Thirds) and K100D S (APS-C) posses different sensor dimensions.

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The E-420 was released 13 months after the K100D S which makes them a generation away from each other. Each of the cameras feature the same body design (Compact SLR).

Before delving right into a step-by-step comparison, here is a quick overview of how the E-420 scores against the K100D S with regard to portability, imaging, features and an overall score.

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Reasons to pick Olympus E-420 over the Pentax K100D S

 E-420 K100D S 
RevealedJune 2008June 2007More modern by 13 months
Screen size2.7"2.5"Bigger screen (+0.2")
Screen resolution230k210kSharper screen (+20k dot)

Reasons to pick Pentax K100D S over the Olympus E-420

 K100D S E-420 

Common features in the Olympus E-420 and Pentax K100D S

 E-420 K100D S 
Focus manually Dial accurate focusing
Screen typeFixed Fixed Fixed screen
Selfie screen Absent selfie screen
Touch friendly screen Absent Touch friendly screen

Olympus E-420 vs Pentax K100D S Physical Comparison

If you're planning to carry around your camera often, you should take into account its weight and measurements. The Olympus E-420 offers outside dimensions of 130mm x 91mm x 53mm (5.1" x 3.6" x 2.1") with a weight of 426 grams (0.94 lbs) and the Pentax K100D S has proportions of 129mm x 91mm x 71mm (5.1" x 3.6" x 2.8") along with a weight of 646 grams (1.42 lbs).

Analyze the Olympus E-420 and Pentax K100D S in our brand new Camera & Lens Size Comparison Tool. Camera Size Comparison with Lenses

Remember that, the weight of an ILC will change dependant on the lens you are utilizing at that moment. Here is a front view dimensions comparison of the E-420 compared to the K100D S.

Olympus E-420 vs Pentax K100D S size comparison

Looking at size and weight, the portability score of the E-420 and K100D S is 77 and 65 respectively.

Olympus E-420 vs Pentax K100D S top view buttons comparison

Olympus E-420 vs Pentax K100D S Sensor Comparison

Oftentimes, its hard to visualize the difference between sensor sizes simply by reading a spec sheet. The picture here should provide you a better sense of the sensor dimensions in the E-420 and K100D S.

As you can see, the two cameras feature different resolutions and different sensor sizes. The E-420 because of its tinier sensor is going to make shooting shallow depth of field harder and the Olympus E-420 will offer you more detail as a result of its extra 4MP. Higher resolution can also make it easier to crop pictures way more aggressively. The younger E-420 should have a benefit with regard to sensor technology.

Olympus E-420 vs Pentax K100D S sensor size comparison

Olympus E-420 vs Pentax K100D S Screen and ViewFinder

Olympus E-420 vs Pentax K100D S Screen and Viewfinder comparison
Photography Glossary

Photography Type Scores

Portrait Comparison

Olympus E-420 Portrait photography factors
Pentax K100D S Portrait photography factors
57
focusing manually
nice sensor size (Four Thirds)
supports RAW files
low MP (10 megapixels)
51
focusing manually
good sensor size (APS-C)
exports RAW files
no liveview feature
low megapixels (6 megapixels)
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Street Comparison

Street photography with Olympus E-420
Street photography with Pentax K100D S
64
nice sensor size (Four Thirds)
supports RAW files
lighter than competition in class (426g)
fixed screen
lack of image stabilization
64
built in image stabilization (Sensor based)
good sensor size (APS-C)
exports RAW files
screen does not articulate
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Sports Comparison

Sports photography with Olympus E-420
Sports photography with Pentax K100D S
39
nice sensor size (Four Thirds)
has phase detect auto focus
low fps (4.0 fps)
lack of image stabilization
low MP (10 megapixels)
low battery pack (500 per charge)
47
built in image stabilization (Sensor based)
good sensor size (APS-C)
supports phase detect auto focus
no liveview feature
slow continuous shooting (3.0 frames/s)
low megapixels (6 megapixels)
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Travel Comparison

Travel photography with Olympus E-420
Travel photography with Pentax K100D S
53
lighter than competition in class (426 grams)
has built in flash
does not have Timelapse mode
low battery pack (500 shots)
low MP (10 megapixels)
screen isn't selfie friendly
45
built-in flash
doesn't have Timelapse recording
low megapixels (6MP)
screen isn't selfie friendly
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Landscape Comparison

Landscape photography with Olympus E-420
Landscape photography with Pentax K100D S
47
focusing manually
change lenses (Micro Four Thirds mount)
nice sensor size (Four Thirds)
supports RAW files
screen is somewhat small (2.7 inch)
lack of image stabilization
low MP (10MP)
low battery pack (500 CIPA)
does not have Timelapse mode
52
focusing manually
swap lenses (Pentax KAF2 mount)
built in image stabilization (Sensor based)
good sensor size (APS-C)
exports RAW files
screen is somewhat small (2.5 inches)
no liveview feature
low megapixels (6 megapixels)
doesn't have Timelapse recording
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Vlogging Comparison

Olympus E-420 Vlogging information
Pentax K100D S Vlogging information
9
no video recording
9
can't shoot video
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Olympus E-420 vs Pentax K100D S Specifications

Detailed spec comparison table for Olympus E-420 and Pentax K100D S
 Olympus E-420Pentax K100D Super
General Information
Manufacturer Olympus Pentax
Model Olympus E-420 Pentax K100D Super
Class Entry-Level DSLR Entry-Level DSLR
Introduced 2008-06-23 2007-06-28
Body design Compact SLR Compact SLR
Sensor Information
Chip TruePic III -
Sensor type CMOS CCD
Sensor size Four Thirds APS-C
Sensor measurements 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
Maximum resolution 3648 x 2736 3008 x 2008
Maximum native ISO 1600 3200
Minimum native ISO 100 200
RAW files
Autofocusing
Manual focus
AF touch
AF continuous
AF single
AF tracking
Selective AF
AF center weighted
Multi area AF
AF live view
Face detection AF
Contract detection AF
Phase detection AF
Number of focus points 3 11
Lens
Lens mount Micro Four Thirds Pentax KAF2
Amount of lenses 45 151
Focal length multiplier 2.1 1.5
Screen
Range of screen Fixed Type Fixed Type
Screen size 2.7 inches 2.5 inches
Screen resolution 230 thousand dot 210 thousand dot
Selfie friendly
Liveview
Touch function
Viewfinder Information
Viewfinder Optical (pentamirror) Optical (pentamirror)
Viewfinder coverage 95% 96%
Viewfinder magnification 0.46x 0.57x
Features
Lowest shutter speed 60 seconds 30 seconds
Highest shutter speed 1/4000 seconds 1/4000 seconds
Continuous shooting speed 4.0 frames/s 3.0 frames/s
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes Yes
Custom WB
Image stabilization
Integrated flash
Flash range 12.00 m (at ISO 100) -
Flash modes Auto, Auto FP, Manual, Red-Eye Auto, On, Off, Red-eye reduction
Hot shoe
AE bracketing
WB bracketing
Highest flash sync 1/180 seconds 1/180 seconds
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Maximum video resolution None None
Microphone 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
Environmental seal
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 426 grams (0.94 lb) 646 grams (1.42 lb)
Physical dimensions 130 x 91 x 53mm (5.1" x 3.6" x 2.1") 129 x 91 x 71mm (5.1" x 3.6" x 2.8")
DXO scores
DXO All around score 56 not tested
DXO Color Depth score 21.5 not tested
DXO Dynamic range score 10.4 not tested
DXO Low light score 527 not tested
Other
Battery life 500 photos -
Battery format Battery Pack -
Battery model - 4 x AA
Self timer Yes (2 or 12 sec) Yes (2 or 12 sec)
Time lapse shooting
Storage media Compact Flash (Type I or II), xD Picture Card SD/SDHC card
Storage slots Single Single
Cost at launch $999 $520