Olympus E-M1 III vs Pentax K-1 II
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Olympus E-M1 III vs Pentax K-1 II Key Specs
(Full Review)
- 20MP - Four Thirds Sensor
- 3" Fully Articulated Display
- 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
- Announced February 2020
- Previous Model is Olympus E-M1 II
(Full Review)
- 36MP - Full frame Sensor
- 3.2" Fully Articulated Display
- ISO 100 - 819200
- Sensor based 5-axis Image Stabilization
- No Anti-Alias Filter
- 1/8000s Maximum Shutter
- 1920 x 1080 video
- Pentax KAF4 Mount
- 1010g - 137 x 110 x 86mm
- Revealed February 2018
- Previous Model is Pentax K-1
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Here, we are matching up the Olympus E-M1 III versus Pentax K-1 II, former is a Pro Mirrorless while the other is a Advanced DSLR by competitors Olympus and Pentax. There is a sizable difference among the image resolutions of the E-M1 III (20MP) and K-1 II (36MP) and the E-M1 III (Four Thirds) and K-1 II (Full frame) provide totally different sensor dimensions.
Japan-exclusive Leica Leitz Phone 3 features big sensor and new modesThe E-M1 III was announced 24 months after the K-1 II making them a generation away from each other. Each of the cameras feature different body design with the Olympus E-M1 III being a SLR-style mirrorless camera and the Pentax K-1 II being a Mid-size SLR camera.
Before going straight to a comprehensive comparison, here is a simple summary of how the E-M1 III scores against the K-1 II in terms of portability, imaging, features and an overall mark.
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Here is a sample of the gallery pictures for Olympus OM-D E-M1 Mark III & Pentax K-1 Mark II. The whole galleries are viewable at Olympus E-M1 III Gallery & Pentax K-1 II Gallery.
Reasons to pick Olympus E-M1 III over the Pentax K-1 II
| E-M1 III | K-1 II | |||
|---|---|---|---|---|
| Revealed | February 2020 | February 2018 | Newer by 24 months | |
| Selfie screen | Take selfies | |||
| Touch friendly display | Easily navigate |
Reasons to pick Pentax K-1 II over the Olympus E-M1 III
| K-1 II | E-M1 III | |||
|---|---|---|---|---|
| Display size | 3.2" | 3" | Larger display (+0.2") |
Common features in the Olympus E-M1 III and Pentax K-1 II
| E-M1 III | K-1 II | |||
|---|---|---|---|---|
| Focus manually | Very accurate focus | |||
| Display type | Fully Articulated | Fully Articulated | Fully Articulated display | |
| Display resolution | 1037k | 1037k | Equal display resolution |
Olympus E-M1 III vs Pentax K-1 II Physical Comparison
In case you're aiming to travel with your camera regularly, you will have to think about its weight and volume. The Olympus E-M1 III enjoys physical measurements of 134mm x 91mm x 69mm (5.3" x 3.6" x 2.7") and a weight of 580 grams (1.28 lbs) and the Pentax K-1 II has sizing of 137mm x 110mm x 86mm (5.4" x 4.3" x 3.4") having a weight of 1010 grams (2.23 lbs).
Check out the Olympus E-M1 III versus Pentax K-1 II in our newest Camera & Lens Size Comparison Tool.
Remember that, the weight of an ILC will change depending on the lens you are utilising during that time. Below is a front view overall size comparison of the E-M1 III vs the K-1 II.

Factoring in size and weight, the portability rating of the E-M1 III and K-1 II is 67 and 55 respectively.
Olympus E-M1 III vs Pentax K-1 II Sensor Comparison
Usually, it can be difficult to see the difference in sensor dimensions only by going through a spec sheet. The pic below should give you a greater sense of the sensor measurements in the E-M1 III and K-1 II.
Clearly, each of these cameras come with different resolutions and different sensor dimensions. The E-M1 III having a smaller sensor will make achieving shallower DOF more difficult and the Pentax K-1 II will produce extra detail with its extra 16 Megapixels. Greater resolution will make it easier to crop pics a good deal more aggressively. The fresher E-M1 III is going to have an advantage with regard to sensor innovation.
Olympus E-M1 III vs Pentax K-1 II Screen and ViewFinder
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Olympus E-M1 III vs Pentax K-1 II Specifications
| Olympus OM-D E-M1 Mark III | Pentax K-1 Mark II | |
|---|---|---|
| General Information | ||
| Brand | Olympus | Pentax |
| Model | Olympus OM-D E-M1 Mark III | Pentax K-1 Mark II |
| Type | Pro Mirrorless | Advanced DSLR |
| Announced | 2020-02-11 | 2018-02-22 |
| Body design | SLR-style mirrorless | Mid-size SLR |
| Sensor Information | ||
| Processor | TruePic IX | PRIME IV |
| Sensor type | CMOS | CMOS |
| Sensor size | Four Thirds | Full frame |
| Sensor dimensions | 17.4 x 13mm | 35.9 x 24mm |
| Sensor area | 226.2mm² | 861.6mm² |
| Sensor resolution | 20 megapixel | 36 megapixel |
| Anti aliasing filter | ||
| Aspect ratio | 4:3 | 3:2 |
| Full resolution | 5184 x 3888 | 7360 x 4912 |
| Max native ISO | 25600 | 819200 |
| Min native ISO | 200 | 100 |
| RAW data | ||
| Min boosted ISO | 64 | - |
| Autofocusing | ||
| Manual focus | ||
| AF touch | ||
| AF continuous | ||
| Single AF | ||
| Tracking AF | ||
| Selective AF | ||
| AF center weighted | ||
| Multi area AF | ||
| AF live view | ||
| Face detect focusing | ||
| Contract detect focusing | ||
| Phase detect focusing | ||
| Number of focus points | 121 | 33 |
| Cross focus points | 121 | 25 |
| Lens | ||
| Lens mount | Micro Four Thirds | Pentax KAF4 |
| Available lenses | 107 | 151 |
| Crop factor | 2.1 | 1 |
| Screen | ||
| Range of display | Fully Articulated | Fully Articulated |
| Display sizing | 3" | 3.2" |
| Resolution of display | 1,037k dot | 1,037k dot |
| Selfie friendly | ||
| Liveview | ||
| Touch functionality | ||
| Viewfinder Information | ||
| Viewfinder type | Electronic | Optical (pentaprism) |
| Viewfinder resolution | 2,360k dot | - |
| Viewfinder coverage | 100 percent | 100 percent |
| Viewfinder magnification | 0.74x | 0.7x |
| Features | ||
| Lowest shutter speed | 60 seconds | 30 seconds |
| Highest shutter speed | 1/8000 seconds | 1/8000 seconds |
| Highest quiet shutter speed | 1/32000 seconds | - |
| Continuous shooting speed | 60.0 frames/s | 4.4 frames/s |
| Shutter priority | ||
| Aperture priority | ||
| Expose Manually | ||
| Exposure compensation | Yes | Yes |
| Set WB | ||
| Image stabilization | ||
| Inbuilt flash | ||
| Flash range | no built-in flash | no built-in flash |
| Flash options | Redeye, Fill-in, Flash Off, Red-eye Slow sync.(1st curtain), Slow sync.(1st curtain), Slow sync.(2nd curtain), Manual | Auto Flash Discharge, Auto Flash + Red-eye Reduction, Flash On, Flash On + Red-eye Reduction, Slow-speed Sync, Slow-speed Sync + Red-eye, P-TTL, Trailing Curtain Sync, Contrast-control-sync, High-speed sync, Wireless sync |
| Hot shoe | ||
| Auto exposure bracketing | ||
| WB bracketing | ||
| Highest flash sync | 1/250 seconds | 1/200 seconds |
| Exposure | ||
| Multisegment metering | ||
| Average metering | ||
| Spot metering | ||
| Partial metering | ||
| AF area metering | ||
| Center weighted metering | ||
| Video features | ||
| 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 (60i, 50i, 30p, 25p, 24p), 1280 x 720 (60p, 50p) |
| Max video resolution | 4096x2160 | 1920x1080 |
| Video data format | MPEG-4, H.264 | MPEG-4, H.264 |
| Mic jack | ||
| Headphone jack | ||
| Connectivity | ||
| Wireless | Built-In | Auto Flash Discharge, Auto Flash + Red-eye Reduction, Flash On, Flash On + Red-eye Reduction, Slow-speed Sync, Slow-speed Sync + Red-eye, P-TTL, Trailing Curtain Sync, Contrast-control-sync, High-speed sync, Wireless sync |
| Bluetooth | ||
| NFC | ||
| HDMI | ||
| USB | USB 3.1 Gen 1 (5 GBit/sec) | USB 2.0 (480 Mbit/sec) |
| GPS | None | Built-in |
| Physical | ||
| Environment seal | ||
| Water proof | ||
| Dust proof | ||
| Shock proof | ||
| Crush proof | ||
| Freeze proof | ||
| Weight | 580 gr (1.28 lb) | 1010 gr (2.23 lb) |
| Physical dimensions | 134 x 91 x 69mm (5.3" x 3.6" x 2.7") | 137 x 110 x 86mm (5.4" x 4.3" x 3.4") |
| DXO scores | ||
| DXO All around score | not tested | not tested |
| DXO Color Depth score | not tested | not tested |
| DXO Dynamic range score | not tested | not tested |
| DXO Low light score | not tested | not tested |
| Other | ||
| Battery life | 420 shots | 670 shots |
| Type of battery | Battery Pack | Battery Pack |
| Battery model | BLH-1 | D-LI90 |
| Self timer | Yes (2 or 12 secs, custom) | Yes (2 or 12 sec, custom) |
| Time lapse feature | ||
| Type of storage | Dual SD/SDHC/SDXC slots (UHS-II on first slot) | Dual SD/SDHC/SDXC (UHS-I) |
| Storage slots | 2 | 2 |
| Pricing at launch | $1,800 | $1,737 |