Olympus E-M1 III vs Pentax K-S1
Portability
67 Imaging
62 Features
96 Overall
75
67 Imaging
62 Features
96 Overall
75
Portability
69 Imaging
63 Features
70 Overall
65
69 Imaging
63 Features
70 Overall
65
Olympus E-M1 III vs Pentax K-S1 Key Specs
Olympus E-M1 III
(Full Review)
(Full Review)
- 20MP - Four Thirds Sensor
- 3" Fully Articulated Screen
- ISO 200 - 25600
- Sensor based 5-axis Image Stabilization
- No Anti-Alias Filter
- 1/8000s Max Shutter
- 4096 x 2160 video
- Micro Four Thirds Mount
- 580g - 134 x 91 x 69mm
- Launched February 2020
- Earlier Model is Olympus E-M1 II
Pentax K-S1
(Full Review)
(Full Review)
- 20MP - APS-C Sensor
- 3" Fixed Display
- ISO 100 - 51200
- Sensor based Image Stabilization
- No Anti-Alias Filter
- 1/6000s Max Shutter
- 1920 x 1080 video
- Pentax KAF2 Mount
- 558g - 121 x 93 x 70mm
- Revealed August 2014
- Successor is Pentax K-S2
Photography Glossary Olympus E-M1 III vs Pentax K-S1 Overview
The following is a complete review of the Olympus E-M1 III vs Pentax K-S1, one is a Pro Mirrorless and the other is a Advanced DSLR by manufacturers Olympus and Pentax. The image resolution of the E-M1 III (20MP) and the K-S1 (20MP) is fairly close but the E-M1 III (Four Thirds) and K-S1 (APS-C) posses different sensor dimensions.
Snapchat Adds Watermarks to AI-Created ImagesThe E-M1 III was unveiled 5 years after the K-S1 which is a fairly serious gap as far as camera technology is concerned. Both of these cameras have different body design with the Olympus E-M1 III being a SLR-style mirrorless camera and the Pentax K-S1 being a Mid-size SLR camera.
Before we go right into a comprehensive comparison, here is a short introduction of how the E-M1 III matches up vs the K-S1 in terms of portability, imaging, features and an overall mark.
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This is a sample of the gallery pictures for Olympus OM-D E-M1 Mark III and Pentax K-S1. The full galleries are viewable at Olympus E-M1 III Gallery and Pentax K-S1 Gallery.
Reasons to pick Olympus E-M1 III over the Pentax K-S1
| E-M1 III | K-S1 | |||
|---|---|---|---|---|
| Revealed | February 2020 |  | August 2014 | Newer by 67 months |
| Display type | Fully Articulated |  | Fixed | Fully Articulating display |
| Display resolution | 1037k |  | 921k | Sharper display (+116k dot) |
| Selfie screen |  | Take selfies | ||
| Touch display |  | Easily navigate |
Reasons to pick Pentax K-S1 over the Olympus E-M1 III
| K-S1 | E-M1 III |
|---|
Common features in the Olympus E-M1 III and Pentax K-S1
| E-M1 III | K-S1 | |||
|---|---|---|---|---|
| Focus manually |  | More precise focus | ||
| Display dimensions | 3" |  | 3" | Equal display sizing |
Olympus E-M1 III vs Pentax K-S1 Physical Comparison
If you're intending to travel with your camera often, you will want to factor its weight and proportions. The Olympus E-M1 III has external dimensions of 134mm x 91mm x 69mm (5.3" x 3.6" x 2.7") accompanied by a weight of 580 grams (1.28 lbs) and the Pentax K-S1 has measurements of 121mm x 93mm x 70mm (4.8" x 3.7" x 2.8") along with a weight of 558 grams (1.23 lbs).
Analyze the Olympus E-M1 III vs Pentax K-S1 in the latest Camera and Lens Size Comparison Tool.
Keep in mind, the weight of an Interchangeable Lens Camera will change based on the lens you choose during that time. Following is a front view over all size comparison of the E-M1 III versus the K-S1.
Taking into consideration dimensions and weight, the portability score of the E-M1 III and K-S1 is 67 and 69 respectively.
Olympus E-M1 III vs Pentax K-S1 Sensor Comparison
Sometimes, its tough to picture the gap in sensor dimensions purely by viewing technical specs. The image here might give you a far better sense of the sensor sizes in the E-M1 III and K-S1.
As you have seen, both of these cameras have the same megapixel count but different sensor dimensions. The E-M1 III includes the smaller sensor which is going to make obtaining shallow depth of field harder. The fresher E-M1 III should have an advantage in sensor technology.
Olympus E-M1 III vs Pentax K-S1 Screen and ViewFinder
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Portrait Comparison
Olympus E-M1 III as a Portrait photography camera
Pentax K-S1 as a Portrait photography camera
you can focus manually
megapixel count decent (20 megapixels)
nice sensor size (Four Thirds)
has face detection autofocus
supports RAW files
manual focus
MP count decent (20 megapixels)
sensor size is decent (APS-C)
offers face detection focus
exports RAW formats
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Olympus E-M1 III Street photography features
Pentax K-S1 Street photography features
screen articulates fully
image stabilization (Sensor based 5-axis)
nice sensor size (Four Thirds)
supports RAW files
includes touch to focus
environment proof
great ISO range (25,600)
image stabilization (Sensor based)
sensor size is decent (APS-C)
exports RAW formats
lighter than average (558g)
great ISO range (51,200)
fixed screen
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Sports photography with Olympus E-M1 III
Sports photography with Pentax K-S1
great max shutter speed (1/8,000s)
silent shooting (1/32,000s)
fast shooting (60.0 frames per second)
image stabilization (Sensor based 5-axis)
megapixel count decent (20MP)
nice sensor size (Four Thirds)
has tracking autofocus
environment proof
has phase detect autofocus
high shutter speed (1/6,000 seconds)
image stabilization (Sensor based)
MP count decent (20 megapixels)
sensor size is decent (APS-C)
offers tracking autofocus
sensor has phase detect auto focus
max frames per second low (5.4 frames/s)
terrible battery power (410 per charge)
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Olympus E-M1 III Travel photography advice
Pentax K-S1 Travel photography advice
environment proof
has bluetooth
includes touch to focus
megapixel count decent (20MP)
screen is selfie friendly
lighter than average (558 grams)
MP count decent (20 megapixels)
built-in flash
no Time Lapse mode
terrible battery power (410 CIPA)
screen is not selfie friendly
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Olympus E-M1 III Landscape photography advice
Pentax K-S1 Landscape photography advice
you can focus manually
change lenses (Micro Four Thirds mount)
screen size is decent (3")
image stabilization (Sensor based 5-axis)
megapixel count decent (20MP)
nice sensor size (Four Thirds)
no anti-alias filter
great ISO range (25,600)
supports RAW files
environment proof
2 card slots
manual focus
swap lenses (Pentax KAF2 mount)
screen is a decent size (3")
image stabilization (Sensor based)
MP count decent (20MP)
sensor size is decent (APS-C)
doesnt have anti aliasing filter
great ISO range (51,200)
exports RAW formats
terrible battery power (410 shots)
no Time Lapse mode
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Olympus E-M1 III Vlogging information
Pentax K-S1 Vlogging information
screen is selfie friendly
touchscreen enabled
image stabilization (Sensor based 5-axis)
has face detection autofocus
high res video (4096 x 2160 pixels)
has external microphone support
image stabilization (Sensor based)
offers face detection focus
high res video (1920 x 1080 pixels)
lighter than average (558 grams)
screen is not selfie friendly
no external mic support
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Olympus E-M1 III vs Pentax K-S1 Specifications
| Olympus OM-D E-M1 Mark III | Pentax K-S1 | |
|---|---|---|
| General Information | ||
| Make | Olympus | Pentax |
| Model type | Olympus OM-D E-M1 Mark III | Pentax K-S1 |
| Class | Pro Mirrorless | Advanced DSLR |
| Launched | 2020-02-11 | 2014-08-27 |
| Physical type | SLR-style mirrorless | Mid-size SLR |
| Sensor Information | ||
| Powered by | TruePic IX | Prime MII |
| Sensor type | CMOS | CMOS |
| Sensor size | Four Thirds | APS-C |
| Sensor dimensions | 17.4 x 13mm | 23.5 x 15.6mm |
| Sensor surface area | 226.2mm² | 366.6mm² |
| Sensor resolution | 20 megapixel | 20 megapixel |
| Anti alias filter | ||
| Aspect ratio | 4:3 | 3:2 |
| Maximum resolution | 5184 x 3888 | 5472 x 3648 |
| Maximum native ISO | 25600 | 51200 |
| Lowest native ISO | 200 | 100 |
| RAW support | ||
| Lowest boosted ISO | 64 | - |
| Autofocusing | ||
| Manual focusing | ||
| Touch focus | ||
| AF continuous | ||
| AF single | ||
| Tracking AF | ||
| AF selectice | ||
| Center weighted AF | ||
| Multi area AF | ||
| Live view AF | ||
| Face detection AF | ||
| Contract detection AF | ||
| Phase detection AF | ||
| Total focus points | 121 | 11 |
| Cross type focus points | 121 | - |
| Lens | ||
| Lens mount type | Micro Four Thirds | Pentax KAF2 |
| Number of lenses | 107 | 151 |
| Crop factor | 2.1 | 1.5 |
| Screen | ||
| Screen type | Fully Articulated | Fixed Type |
| Screen size | 3 inches | 3 inches |
| Resolution of screen | 1,037 thousand dots | 921 thousand dots |
| Selfie friendly | ||
| Liveview | ||
| Touch capability | ||
| Viewfinder Information | ||
| Viewfinder | Electronic | Optical (pentaprism) |
| Viewfinder resolution | 2,360 thousand dots | - |
| Viewfinder coverage | 100% | 100% |
| Viewfinder magnification | 0.74x | 0.64x |
| Features | ||
| Lowest shutter speed | 60s | 30s |
| Highest shutter speed | 1/8000s | 1/6000s |
| Highest silent shutter speed | 1/32000s | - |
| Continuous shooting rate | 60.0 frames per sec | 5.4 frames per sec |
| Shutter priority | ||
| Aperture priority | ||
| Manually set exposure | ||
| Exposure compensation | Yes | Yes |
| Custom WB | ||
| Image stabilization | ||
| Integrated flash | ||
| Flash distance | no built-in flash | 10.00 m (at ISO 100) |
| Flash options | Redeye, Fill-in, Flash Off, Red-eye Slow sync.(1st curtain), Slow sync.(1st curtain), Slow sync.(2nd curtain), Manual | Auto, auto + redeye, on, on + redeye reduction, slow sync, trailing curtain sync, manual |
| External flash | ||
| AEB | ||
| WB bracketing | ||
| Highest flash synchronize | 1/250s | - |
| Exposure | ||
| Multisegment exposure | ||
| Average exposure | ||
| Spot exposure | ||
| Partial exposure | ||
| AF area exposure | ||
| Center weighted exposure | ||
| Video features | ||
| Supported video resolutions | 4096 x 2160 @ 24p / 237 Mbps, MOV, H.264, Linear PCM3840 x 2160 @ 30p / 102 Mbps, MOV, H.264, Linear PCM3840 x 2160 @ 25p / 102 Mbps, MOV, H.264, Linear PCM3840 x 2160 @ 23.98p / 102 Mbps, MOV, H.264, Linear PCM1920 x 1080 @ 60p, MOV, H.264, Linear PCM1920 x 1080 @ 50p, MOV, H.264, Linear PCM1920 x 1080 @ 30p, MOV, H.264, Linear PCM1920 x 1080 @ 25p, MOV, H.264, Linear PCM1920 x 1080 @ 23.98p, MOV, H.264, Linear PCM | 1920 x 1080 (30,25,24 fps), 1280 x 720 (60,50 fps) |
| Maximum video resolution | 4096x2160 | 1920x1080 |
| Video data format | MPEG-4, H.264 | H.264 |
| Mic support | ||
| Headphone support | ||
| Connectivity | ||
| Wireless | Built-In | Eye-Fi Connected |
| Bluetooth | ||
| NFC | ||
| HDMI | ||
| USB | USB 3.1 Gen 1 (5 GBit/sec) | USB 2.0 (480 Mbit/sec) |
| GPS | None | Optional |
| Physical | ||
| Environment sealing | ||
| Water proofing | ||
| Dust proofing | ||
| Shock proofing | ||
| Crush proofing | ||
| Freeze proofing | ||
| Weight | 580 grams (1.28 pounds) | 558 grams (1.23 pounds) |
| Physical dimensions | 134 x 91 x 69mm (5.3" x 3.6" x 2.7") | 121 x 93 x 70mm (4.8" x 3.7" x 2.8") |
| DXO scores | ||
| DXO All around rating | not tested | 78 |
| DXO Color Depth rating | not tested | 23.5 |
| DXO Dynamic range rating | not tested | 13.0 |
| DXO Low light rating | not tested | 1061 |
| Other | ||
| Battery life | 420 photos | 410 photos |
| Form of battery | Battery Pack | Battery Pack |
| Battery ID | BLH-1 | D-LI109 |
| Self timer | Yes (2 or 12 secs, custom) | Yes ( 2 or 12 seconds) |
| Time lapse shooting | ||
| Storage type | Dual SD/SDHC/SDXC slots (UHS-II on first slot) | SD/SDHC/SDXC |
| Card slots | Two | Single |
| Price at launch | $1,800 | $339 |