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OM System OM-1 vs Pentax K-01

Portability
65
Imaging
64
Features
96
Overall
76
OM System OM-1 front
 
Pentax K-01 front
Portability
76
Imaging
57
Features
68
Overall
61

OM System OM-1 vs Pentax K-01 Key Specs

OM System OM-1
(Full Review)
  • 20MP - Four Thirds Sensor
  • 3.00" Fully Articulated Screen
  • ISO 200 - 25600 (Push to 102400)
  • Sensor based 5-axis Image Stabilization
  • No Anti-Alias Filter
  • 1/8000s Maximum Shutter
  • 4096 x 2160 video
  • Micro Four Thirds Mount
  • 599g - 135 x 92 x 73mm
  • Released February 2022
Pentax K-01
(Full Review)
  • 16MP - APS-C Sensor
  • 3" Fixed Display
  • ISO 100 - 12800 (Increase to 25600)
  • Sensor based Image Stabilization
  • 1920 x 1080 video
  • Pentax KAF2 Mount
  • 561g - 122 x 79 x 58mm
  • Released May 2012
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OM System OM-1 vs Pentax K-01 Overview

Here, we are looking at the OM System OM-1 vs Pentax K-01, one being a Pro Mirrorless and the other is a Entry-Level Mirrorless by rivals Olympus and Pentax. There is a significant difference among the sensor resolutions of the OM System OM-1 (20MP) and K-01 (16MP) and the OM System OM-1 (Four Thirds) and K-01 (APS-C) offer totally different sensor sizing.

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The OM System OM-1 was revealed 9 years later than the K-01 and that is a fairly sizable gap as far as camera tech is concerned. Both of these cameras feature the same body design (SLR-style mirrorless).

Before diving right into a more detailed comparison, here is a short overview of how the OM System OM-1 grades vs the K-01 with regards to portability, imaging, features and an overall grade.

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Reasons to pick OM System OM-1 over the Pentax K-01

 OM System OM-1 K-01 
ReleasedFebruary 2022May 2012More recent by 119 months
Display typeFully ArticulatedFixed Fully Articulating display
Display resolution1620k921kClearer display (+699k dot)
Selfie screen Take selfies
Touch display Easily navigate

Reasons to pick Pentax K-01 over the OM System OM-1

 K-01 OM System OM-1 

Common features in the OM System OM-1 and Pentax K-01

 OM System OM-1 K-01 
Focus manually Dial accurate focus
Display size3.00"3"Same display measurement

OM System OM-1 vs Pentax K-01 Physical Comparison

If you're planning to lug around your camera, you will need to factor in its weight and dimensions. The OM System OM-1 comes with outer measurements of 135mm x 92mm x 73mm (5.3" x 3.6" x 2.9") and a weight of 599 grams (1.32 lbs) while the Pentax K-01 has dimensions of 122mm x 79mm x 58mm (4.8" x 3.1" x 2.3") along with a weight of 561 grams (1.24 lbs).

Look at the OM System OM-1 vs Pentax K-01 in the new Camera and Lens Size Comparison Tool. Camera Size Comparison with Lenses

Bear in mind, the weight of an Interchangeable Lens Camera will change depending on the lens you are using during that time. Following is a front view proportions comparison of the OM System OM-1 against the K-01.

OM System OM-1 vs Pentax K-01 size comparison

Considering size and weight, the portability score of the OM System OM-1 and K-01 is 65 and 76 respectively.

OM System OM-1 vs Pentax K-01 top view buttons comparison

OM System OM-1 vs Pentax K-01 Sensor Comparison

Often, it is tough to see the contrast in sensor measurements only by checking out specifications. The graphic here should provide you a more clear sense of the sensor measurements in the OM System OM-1 and K-01.

Plainly, both the cameras come with different megapixel count and different sensor measurements. The OM System OM-1 having a smaller sensor will make shooting shallow depth of field more difficult and the OM System OM-1 will provide greater detail because of its extra 4MP. Greater resolution will help you crop pics a good deal more aggressively. The fresher OM System OM-1 will have an edge when it comes to sensor innovation.

OM System OM-1 vs Pentax K-01 sensor size comparison

OM System OM-1 vs Pentax K-01 Screen and ViewFinder

OM System OM-1 vs Pentax K-01 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

OM System OM-1 Portrait photography factors
Pentax K-01 Portrait photography factors
78
focusing manually
MP count good (20MP)
good sensor size (Four Thirds)
features face detection focusing
saves RAW formats
74
has manual focus
decent MP (16MP)
sensor size is good (APS-C)
has face detection autofocus
exports RAW files
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Street Comparison

OM System OM-1 Street photography factors
Pentax K-01 Street photography factors
77
fully articulated screen
image stabilization (Sensor based 5-axis)
good sensor size (Four Thirds)
saves RAW formats
comes with touch to focus
weather sealing
above average high ISO (25,600)
66
has image stabilization (Sensor based)
sensor size is good (APS-C)
exports RAW files
screen does not articulate
more heavy than competitors in class (561g)
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Sports Comparison

OM System OM-1 as a Sports photography camera
Pentax K-01 as a Sports photography camera
82
maximum shutter speed is high (1/8,000s)
quiet mode (1/32,000s)
image stabilization (Sensor based 5-axis)
MP count good (20 megapixels)
good sensor size (Four Thirds)
features tracking autofocus
weather sealing
great battery (520 per charge)
comes with phase detect AF
61
has image stabilization (Sensor based)
decent MP (16 megapixels)
sensor size is good (APS-C)
good battery power (540 CIPA)
low fps (6.0 fps)
doesn't have phase detect autofocus
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Travel Comparison

OM System OM-1 Travel photography factors
Pentax K-01 Travel photography factors
78
great battery (520 shots)
weather sealing
has bluetooth
comes with touch to focus
MP count good (20 megapixels)
selfie friendly screen
65
good battery power (540 CIPA)
decent MP (16MP)
built-in flash
more heavy than competitors in class (561 grams)
screen isn't selfie friendly
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Landscape Comparison

OM System OM-1 Landscape photography information
Pentax K-01 Landscape photography information
82
focusing manually
switch lenses (Micro Four Thirds mount)
screen is a good size (3.00")
image stabilization (Sensor based 5-axis)
MP count good (20 megapixels)
good sensor size (Four Thirds)
does not have anti aliasing filter
above average high ISO (25,600)
saves RAW formats
weather sealing
great battery (520 per charge)
two card slots
80
has manual focus
change lenses (Pentax KAF2 mount)
screen is a decent size (3 inches)
has image stabilization (Sensor based)
decent MP (16MP)
sensor size is good (APS-C)
exports RAW files
good battery power (540 per charge)
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Vlogging Comparison

OM System OM-1 Vlogging highlights
Pentax K-01 Vlogging highlights
78
selfie friendly screen
touchscreen enabled
image stabilization (Sensor based 5-axis)
features face detection focusing
high quality video (4096 x 2160 pixels)
does have external mic socket
34
has image stabilization (Sensor based)
has face detection autofocus
high res video (1920 x 1080 pixels)
has external microphone jack
screen isn't selfie friendly
more heavy than competitors in class (561g)
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OM System OM-1 vs Pentax K-01 Specifications

Detailed spec comparison table for OM System OM-1 and Pentax K-01
 OM System OM-1Pentax K-01
General Information
Brand Name Olympus Pentax
Model OM System OM-1 Pentax K-01
Class Pro Mirrorless Entry-Level Mirrorless
Released 2022-02-15 2012-05-30
Body design SLR-style mirrorless SLR-style mirrorless
Sensor Information
Sensor type Stacked BSI Live MOS Sensor CMOS
Sensor size Four Thirds APS-C
Sensor measurements 17.4 x 13mm 23.7 x 15.7mm
Sensor surface area 226.2mm² 372.1mm²
Sensor resolution 20MP 16MP
Anti aliasing filter
Aspect ratio 4:3 1:1, 4:3, 3:2 and 16:9
Highest resolution 5184 x 3888 4928 x 3264
Highest native ISO 25600 12800
Highest boosted ISO 102400 25600
Min native ISO 200 100
RAW support
Min boosted ISO 80 -
Autofocusing
Focus manually
AF touch
Continuous AF
AF single
AF tracking
AF selectice
Center weighted AF
AF multi area
Live view AF
Face detection focusing
Contract detection focusing
Phase detection focusing
Number of focus points 1053 81
Cross focus points 1053 -
Lens
Lens mounting type Micro Four Thirds Pentax KAF2
Amount of lenses 118 151
Focal length multiplier 2.1 1.5
Screen
Range of screen Fully Articulated Fixed Type
Screen size 3.00 inches 3 inches
Screen resolution 1,620 thousand dot 921 thousand dot
Selfie friendly
Liveview
Touch capability
Screen tech - TFT LCD monitor
Viewfinder Information
Viewfinder type Electronic None
Viewfinder resolution 5,760 thousand dot -
Viewfinder coverage 100% -
Viewfinder magnification 0.83x -
Features
Lowest shutter speed 60 secs 30 secs
Highest shutter speed 1/8000 secs 1/4000 secs
Highest silent shutter speed 1/32000 secs -
Continuous shooting speed 10.0 frames/s 6.0 frames/s
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes Yes
Set WB
Image stabilization
Integrated flash
Flash range no built-in flash 12.00 m (at ISO 100)
Flash settings Redeye, Fill-in, Flash Off, Red-eye Slow sync.(1st curtain), Slow sync.(1st curtain), Slow sync.(2nd curtain), Manual Auto, On, Off, Red-eye, Slow-speed Sync, Trailing Curtain Sync
Hot shoe
Auto exposure bracketing
White balance bracketing
Highest flash sync 1/250 secs 1/180 secs
Exposure
Multisegment metering
Average metering
Spot metering
Partial metering
AF area metering
Center weighted metering
Video features
Supported video resolutions - 1920 x 1080 (30, 25, 24 fps),1280 x 720 (60, 50, 30, 25, 24 fps), 640 x 480 (30, 25, 24 fps)
Highest video resolution 4096x2160 1920x1080
Video file format MPEG-4, H.264, H.265, HEVC MPEG-4, H.264
Microphone input
Headphone input
Connectivity
Wireless Built-In None
Bluetooth
NFC
HDMI
USB USB 3.1 Gen 1 (5 GBit/sec) USB 2.0 (480 Mbit/sec)
GPS None None
Physical
Environmental seal
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 599 gr (1.32 lb) 561 gr (1.24 lb)
Physical dimensions 135 x 92 x 73mm (5.3" x 3.6" x 2.9") 122 x 79 x 58mm (4.8" x 3.1" x 2.3")
DXO scores
DXO All around score not tested 79
DXO Color Depth score not tested 23.7
DXO Dynamic range score not tested 12.9
DXO Low light score not tested 1135
Other
Battery life 520 images 540 images
Style of battery Battery Pack Battery Pack
Battery model BLX-1 D-LI90
Self timer Yes (2 or 12 secs, custom) Yes (2 or 12 sec)
Time lapse shooting
Storage media Dual SD/SDHC/SDXC slots (UHS-II on first slot) SD/SDHC/SDXC
Storage slots 2 One
Launch cost $2,199 $899