Olympus E-M1 III vs Pentax WG-2
67 Imaging
61 Features
96 Overall
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91 Imaging
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Olympus E-M1 III vs Pentax WG-2 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 Maximum Shutter
- 4096 x 2160 video
- Micro Four Thirds Mount
- 580g - 134 x 91 x 69mm
- Launched February 2020
- Superseded the Olympus E-M1 II
(Full Review)
- 16MP - 1/2.3" Sensor
- 3" Fixed Screen
- ISO 125 - 6400
- 1920 x 1080 video
- 28-140mm (F3.5-5.5) lens
- 192g - 122 x 61 x 30mm
- Announced February 2012
Photography Glossary Olympus E-M1 III vs Pentax WG-2 Overview
Following is a complete review of the Olympus E-M1 III and Pentax WG-2, former is a Pro Mirrorless while the latter is a Waterproof by manufacturers Olympus and Pentax. There is a considerable difference between the sensor resolutions of the E-M1 III (20MP) and WG-2 (16MP) and the E-M1 III (Four Thirds) and WG-2 (1/2.3") provide different sensor sizes.
Japan-exclusive Leica Leitz Phone 3 features big sensor and new modesThe E-M1 III was released 8 years after the WG-2 which is quite a large difference as far as tech is concerned. Each of the cameras feature different body design with the Olympus E-M1 III being a SLR-style mirrorless camera and the Pentax WG-2 being a Compact camera.
Before diving into a complete comparison, here is a quick highlight of how the E-M1 III matches up against the WG-2 in terms of portability, imaging, features and an overall score.
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This is a preview of the gallery images for Olympus OM-D E-M1 Mark III & Pentax Optio WG-2. The complete galleries are provided at Olympus E-M1 III Gallery & Pentax WG-2 Gallery.
Reasons to pick Olympus E-M1 III over the Pentax WG-2
| E-M1 III | WG-2 | |||
|---|---|---|---|---|
| Announced | February 2020 | February 2012 | More modern by 98 months | |
| Screen type | Fully Articulated | Fixed | Fully Articulating screen | |
| Screen resolution | 1037k | 460k | Sharper screen (+577k dot) | |
| Selfie screen | Take selfies | |||
| Touch screen | Quickly navigate |
Reasons to pick Pentax WG-2 over the Olympus E-M1 III
| WG-2 | E-M1 III |
|---|
Common features in the Olympus E-M1 III and Pentax WG-2
| E-M1 III | WG-2 | |||
|---|---|---|---|---|
| Manually focus | Dial precise focusing | |||
| Screen size | 3" | 3" | Same screen dimensions |
Olympus E-M1 III vs Pentax WG-2 Physical Comparison
If you're intending to carry around your camera frequently, you are going to need to take into account its weight and dimensions. The Olympus E-M1 III comes with outer measurements of 134mm x 91mm x 69mm (5.3" x 3.6" x 2.7") and a weight of 580 grams (1.28 lbs) whilst the Pentax WG-2 has dimensions of 122mm x 61mm x 30mm (4.8" x 2.4" x 1.2") accompanied by a weight of 192 grams (0.42 lbs).
Examine the Olympus E-M1 III and Pentax WG-2 in our completely new Camera plus Lens Size Comparison Tool.
Remember that, the weight of an ILC will vary depending on the lens you select at that time. Here is a front view dimensions comparison of the E-M1 III and the WG-2.

Considering size and weight, the portability grade of the E-M1 III and WG-2 is 67 and 91 respectively.
Olympus E-M1 III vs Pentax WG-2 Sensor Comparison
Oftentimes, its hard to visualize the difference between sensor sizes purely by going over specifications. The image below will help offer you a stronger sense of the sensor sizing in the E-M1 III and WG-2.
Plainly, both of the cameras feature different megapixels and different sensor sizes. The E-M1 III featuring a bigger sensor is going to make shooting shallow DOF less difficult and the Olympus E-M1 III will offer you extra detail as a result of its extra 4MP. Higher resolution can also help you crop shots way more aggressively. The younger E-M1 III should have a benefit in sensor tech.
Olympus E-M1 III vs Pentax WG-2 Screen and ViewFinder
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Olympus E-M1 III vs Pentax WG-2 Specifications
| Olympus OM-D E-M1 Mark III | Pentax Optio WG-2 | |
|---|---|---|
| General Information | ||
| Brand | Olympus | Pentax |
| Model | Olympus OM-D E-M1 Mark III | Pentax Optio WG-2 |
| Class | Pro Mirrorless | Waterproof |
| Launched | 2020-02-11 | 2012-02-07 |
| Physical type | SLR-style mirrorless | Compact |
| Sensor Information | ||
| Powered by | TruePic IX | - |
| Sensor type | CMOS | BSI-CMOS |
| Sensor size | Four Thirds | 1/2.3" |
| Sensor dimensions | 17.4 x 13mm | 6.17 x 4.55mm |
| Sensor surface area | 226.2mm² | 28.1mm² |
| Sensor resolution | 20 megapixels | 16 megapixels |
| Anti aliasing filter | ||
| Aspect ratio | 4:3 | 1:1, 4:3 and 16:9 |
| Peak resolution | 5184 x 3888 | 4288 x 3216 |
| Highest native ISO | 25600 | 6400 |
| Min native ISO | 200 | 125 |
| RAW data | ||
| Min enhanced ISO | 64 | - |
| Autofocusing | ||
| Focus manually | ||
| Touch focus | ||
| Continuous autofocus | ||
| Single autofocus | ||
| Autofocus tracking | ||
| Autofocus selectice | ||
| Autofocus center weighted | ||
| Autofocus multi area | ||
| Live view autofocus | ||
| Face detect focus | ||
| Contract detect focus | ||
| Phase detect focus | ||
| Number of focus points | 121 | 9 |
| Cross focus points | 121 | - |
| Lens | ||
| Lens mount | Micro Four Thirds | fixed lens |
| Lens focal range | - | 28-140mm (5.0x) |
| Maximum aperture | - | f/3.5-5.5 |
| Macro focus range | - | 1cm |
| Number of lenses | 107 | - |
| Crop factor | 2.1 | 5.8 |
| Screen | ||
| Display type | Fully Articulated | Fixed Type |
| Display sizing | 3 inches | 3 inches |
| Resolution of display | 1,037k dots | 460k dots |
| Selfie friendly | ||
| Liveview | ||
| Touch capability | ||
| Display technology | - | Widescreen TFT color LCD with anti-reflective coating |
| Viewfinder Information | ||
| Viewfinder | Electronic | None |
| Viewfinder resolution | 2,360k dots | - |
| Viewfinder coverage | 100 percent | - |
| Viewfinder magnification | 0.74x | - |
| Features | ||
| Min shutter speed | 60 secs | 4 secs |
| Max shutter speed | 1/8000 secs | 1/4000 secs |
| Max quiet shutter speed | 1/32000 secs | - |
| Continuous shutter rate | 60.0 frames/s | 1.0 frames/s |
| Shutter priority | ||
| Aperture priority | ||
| Manually set exposure | ||
| Exposure compensation | Yes | - |
| Custom white balance | ||
| Image stabilization | ||
| Inbuilt flash | ||
| Flash range | no built-in flash | 5.40 m |
| Flash options | 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, Soft |
| External flash | ||
| AEB | ||
| WB bracketing | ||
| Max flash synchronize | 1/250 secs | - |
| Exposure | ||
| Multisegment exposure | ||
| Average exposure | ||
| Spot exposure | ||
| Partial exposure | ||
| AF area exposure | ||
| Center weighted exposure | ||
| 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 (30 fps), 1280 x 720 (60, 30 fps), 640 x 480 (30fps), 320 x 240 (30, 15 fps) |
| Highest video resolution | 4096x2160 | 1920x1080 |
| Video file format | MPEG-4, H.264 | MPEG-4, H.264 |
| Mic port | ||
| Headphone port | ||
| 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 | None |
| Physical | ||
| Environment sealing | ||
| Water proof | ||
| Dust proof | ||
| Shock proof | ||
| Crush proof | ||
| Freeze proof | ||
| Weight | 580g (1.28 lbs) | 192g (0.42 lbs) |
| Physical dimensions | 134 x 91 x 69mm (5.3" x 3.6" x 2.7") | 122 x 61 x 30mm (4.8" x 2.4" x 1.2") |
| DXO scores | ||
| DXO Overall 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 photos | 260 photos |
| Battery type | Battery Pack | Battery Pack |
| Battery model | BLH-1 | D-LI92 |
| Self timer | Yes (2 or 12 secs, custom) | Yes (2 or 10 sec) |
| Time lapse shooting | ||
| Type of storage | Dual SD/SDHC/SDXC slots (UHS-II on first slot) | SD/SDHC/SDXC card, Internal |
| Card slots | Dual | Single |
| Cost at release | $1,800 | $350 |