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Olympus E-PM1 vs Pentax K100D S

Portability
89
Imaging
48
Features
52
Overall
49
Olympus PEN E-PM1 front
 
Pentax K100D Super front
Portability
65
Imaging
45
Features
38
Overall
42

Olympus E-PM1 vs Pentax K100D S Key Specs

Olympus E-PM1
(Full Review)
  • 12MP - Four Thirds Sensor
  • 3" Fixed Screen
  • ISO 100 - 12800
  • Sensor based Image Stabilization
  • 1920 x 1080 video
  • Micro Four Thirds Mount
  • 265g - 110 x 64 x 34mm
  • Launched November 2011
  • Later Model is Olympus E-PM2
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
  • Earlier Model is Pentax K100D
  • Later Model is Pentax K200D
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Olympus E-PM1 vs Pentax K100D S Overview

Here, we are contrasting the Olympus E-PM1 vs Pentax K100D S, former being a Entry-Level Mirrorless while the other is a Entry-Level DSLR by companies Olympus and Pentax. There is a sizable difference among the resolutions of the E-PM1 (12MP) and K100D S (6MP) and the E-PM1 (Four Thirds) and K100D S (APS-C) offer totally different sensor dimensions.

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The E-PM1 was released 4 years later than the K100D S and that is a fairly significant difference as far as camera tech is concerned. The two cameras feature different body design with the Olympus E-PM1 being a Rangefinder-style mirrorless camera and the Pentax K100D S being a Compact SLR camera.

Before delving right into a thorough comparison, here is a short summation of how the E-PM1 matches up versus the K100D S with respect to portability, imaging, features and an overall grade.

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Reasons to pick Olympus E-PM1 over the Pentax K100D S

 E-PM1 K100D S 
ReleasedNovember 2011June 2007More recent by 54 months
Display size3"2.5"Larger display (+0.5")
Display resolution460k210kClearer display (+250k dot)

Reasons to pick Pentax K100D S over the Olympus E-PM1

 K100D S E-PM1 

Common features in the Olympus E-PM1 and Pentax K100D S

 E-PM1 K100D S 
Manual focus Very exact focusing
Display typeFixed Fixed Fixed display
Selfie screen Neither comes with selfie screen
Touch display Neither comes with Touch display

Olympus E-PM1 vs Pentax K100D S Physical Comparison

For anyone who is looking to lug around your camera, you're going to have to factor its weight and measurements. The Olympus E-PM1 comes with outer measurements of 110mm x 64mm x 34mm (4.3" x 2.5" x 1.3") with a weight of 265 grams (0.58 lbs) while the Pentax K100D S has proportions 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-PM1 vs Pentax K100D S in our newest Camera & Lens Size Comparison Tool. Camera Size Comparison with Lenses

Take into account, the weight of an ILC will change depending on the lens you have attached at that time. Here is a front view over all size comparison of the E-PM1 versus the K100D S.

Olympus E-PM1 vs Pentax K100D S size comparison

Taking into account size and weight, the portability grade of the E-PM1 and K100D S is 89 and 65 respectively.

Olympus E-PM1 vs Pentax K100D S top view buttons comparison

Olympus E-PM1 vs Pentax K100D S Sensor Comparison

In many cases, its tough to visualise the difference in sensor measurements simply by looking through specifications. The visual below may offer you a better sense of the sensor sizing in the E-PM1 and K100D S.

Plainly, the two cameras feature different megapixels and different sensor measurements. The E-PM1 due to its smaller sensor will make achieving shallow DOF tougher and the Olympus E-PM1 will result in greater detail as a result of its extra 6 Megapixels. Greater resolution will let you crop images way more aggressively. The newer E-PM1 is going to have a benefit in sensor tech.

Olympus E-PM1 vs Pentax K100D S sensor size comparison

Olympus E-PM1 vs Pentax K100D S Screen and ViewFinder

Olympus E-PM1 vs Pentax K100D S Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Olympus E-PM1 Portrait photography features
Pentax K100D S Portrait photography features
60
focusing manually
good sensor size (Four Thirds)
has face detection autofocus
delivers RAW files
low resolution (12MP)
51
has manual focus
sensor size is good (APS-C)
exports RAW formats
no liveview feature
low megapixels (6 megapixels)
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Street Comparison

Olympus E-PM1 as a Street photography camera
Pentax K100D S as a Street photography camera
75
has image stabilization (Sensor based)
good sensor size (Four Thirds)
delivers RAW files
no articulating screen
64
has image stabilization (Sensor based)
sensor size is good (APS-C)
exports RAW formats
screen is fixed
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Sports Comparison

Olympus E-PM1 Sports photography features
Pentax K100D S Sports photography features
49
has image stabilization (Sensor based)
good sensor size (Four Thirds)
has tracking autofocus
continuous shooting slow (6.0 frames/s)
low resolution (12 megapixels)
has no phase detect autofocus
47
has image stabilization (Sensor based)
sensor size is good (APS-C)
has phase detect autofocus
no liveview feature
slow fps (3.0 frames per second)
low megapixels (6MP)
Photography Glossary

Travel Comparison

Olympus E-PM1 as a Travel photography camera
Pentax K100D S as a Travel photography camera
45
no Time Lapse mode
low resolution (12 megapixels)
display isn't selfie friendly
45
has built in flash
doesn't have Time Lapse recording
low megapixels (6 megapixels)
screen is not selfie friendly
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Landscape Comparison

Olympus E-PM1 Landscape photography details
Pentax K100D S Landscape photography details
65
focusing manually
switch lenses (Micro Four Thirds mount)
screen size is good (3 inches)
has image stabilization (Sensor based)
good sensor size (Four Thirds)
delivers RAW files
low resolution (12 megapixels)
no Time Lapse mode
52
has manual focus
change lenses (Pentax KAF2 mount)
has image stabilization (Sensor based)
sensor size is good (APS-C)
exports RAW formats
screen is somewhat small (2.5 inches)
no liveview feature
low megapixels (6 megapixels)
doesn't have Time Lapse recording
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Vlogging Comparison

Olympus E-PM1 Vlogging features
Pentax K100D S Vlogging features
34
has image stabilization (Sensor based)
has face detection autofocus
video res high (1920 x 1080 pixels)
display isn't selfie friendly
no external mic support
9
no video
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Olympus E-PM1 vs Pentax K100D S Specifications

Detailed spec comparison table for Olympus E-PM1 and Pentax K100D S
 Olympus PEN E-PM1Pentax K100D Super
General Information
Manufacturer Olympus Pentax
Model type Olympus PEN E-PM1 Pentax K100D Super
Class Entry-Level Mirrorless Entry-Level DSLR
Launched 2011-11-23 2007-06-28
Physical type Rangefinder-style mirrorless Compact SLR
Sensor Information
Chip TruePic VI -
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 12MP 6MP
Anti alias filter
Aspect ratio 4:3 3:2
Highest resolution 4032 x 3024 3008 x 2008
Highest native ISO 12800 3200
Lowest native ISO 100 200
RAW images
Autofocusing
Manual focusing
AF touch
Continuous AF
AF single
AF tracking
Selective AF
AF center weighted
AF multi area
AF live view
Face detection focusing
Contract detection focusing
Phase detection focusing
Total focus points 35 11
Lens
Lens mount type Micro Four Thirds Pentax KAF2
Amount of lenses 107 151
Focal length multiplier 2.1 1.5
Screen
Type of screen Fixed Type Fixed Type
Screen size 3 inches 2.5 inches
Resolution of screen 460k dots 210k dots
Selfie friendly
Liveview
Touch operation
Screen technology HyperCrystal LCD AR(Anti-Reflective) coating -
Viewfinder Information
Viewfinder Electronic (optional) Optical (pentamirror)
Viewfinder coverage - 96 percent
Viewfinder magnification - 0.57x
Features
Lowest shutter speed 60 seconds 30 seconds
Highest shutter speed 1/4000 seconds 1/4000 seconds
Continuous shooting rate 6.0 frames per second 3.0 frames per second
Shutter priority
Aperture priority
Expose Manually
Exposure compensation Yes Yes
Change WB
Image stabilization
Built-in flash
Flash distance no built-in flash -
Flash options Auto, On, Off, Red-Eye, Fill-in, Slow Sync, Manual (3 levels) Auto, On, Off, Red-eye reduction
Hot shoe
AEB
White balance bracketing
Highest flash synchronize 1/160 seconds 1/180 seconds
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Supported video resolutions 1920 x 1080 (60 fps), 1280 x 720 (60, 30 fps), 640 x 480 (30 fps) -
Highest video resolution 1920x1080 None
Video file format AVCHD, Motion JPEG -
Mic support
Headphone support
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 sealing
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 265g (0.58 lb) 646g (1.42 lb)
Physical dimensions 110 x 64 x 34mm (4.3" x 2.5" x 1.3") 129 x 91 x 71mm (5.1" x 3.6" x 2.8")
DXO scores
DXO All around rating 52 not tested
DXO Color Depth rating 21.0 not tested
DXO Dynamic range rating 10.3 not tested
DXO Low light rating 499 not tested
Other
Battery life 330 images -
Style of battery Battery Pack -
Battery ID BLS-5 4 x AA
Self timer Yes (2 or 12 sec) Yes (2 or 12 sec)
Time lapse recording
Storage type SD/SDHC/SDXC SD/SDHC card
Card slots One One
Launch price $499 $520