Olympus E-M1X vs Pentax K100D
54 Imaging
60 Features
93 Overall
73
64 Imaging
44 Features
36 Overall
40
Olympus E-M1X vs Pentax K100D Key Specs
(Full Review)
- 20MP - Four Thirds Sensor
- 3" Fully Articulated Screen
- ISO 200 - 25600
- Sensor based 5-axis Image Stabilization
- 1/8000s Maximum Shutter
- 4096 x 2160 video
- Micro Four Thirds Mount
- 997g - 144 x 147 x 75mm
- Revealed January 2019
- Superseded the Olympus E-M1 II
(Full Review)
- 6MP - APS-C Sensor
- 2.5" Fixed Display
- ISO 200 - 3200
- Sensor based Image Stabilization
- No Video
- Pentax KAF Mount
- 660g - 129 x 93 x 70mm
- Launched December 2006
- Replacement is Pentax K100D S
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Its time to look a little more in depth at the Olympus E-M1X and Pentax K100D, one being a Pro Mirrorless and the other is a Entry-Level DSLR by brands Olympus and Pentax. There exists a crucial gap among the sensor resolutions of the E-M1X (20MP) and K100D (6MP) and the E-M1X (Four Thirds) and K100D (APS-C) have totally different sensor sizes.
Samsung Releases Faster Versions of EVO MicroSD CardsThe E-M1X was brought out 12 years later than the K100D and that is a fairly serious gap as far as camera technology is concerned. Each of these cameras have different body design with the Olympus E-M1X being a SLR-style mirrorless camera and the Pentax K100D being a Compact SLR camera.
Before we go right into a complete comparison, here is a brief synopsis of how the E-M1X scores against the K100D in regards to portability, imaging, features and an overall rating.
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Following is a sample of the gallery pics for Olympus OM-D E-M1X and Pentax K100D. The entire galleries are available at Olympus E-M1X Gallery and Pentax K100D Gallery.
Reasons to pick Olympus E-M1X over the Pentax K100D
| E-M1X | K100D | |||
|---|---|---|---|---|
| Launched | January 2019 | December 2006 | Fresher by 148 months | |
| Display type | Fully Articulated | Fixed | Fully Articulating display | |
| Display dimensions | 3" | 2.5" | Larger display (+0.5") | |
| Display resolution | 1037k | 210k | Clearer display (+827k dot) | |
| Selfie screen | Take selfies | |||
| Touch display | Easily navigate |
Reasons to pick Pentax K100D over the Olympus E-M1X
| K100D | E-M1X |
|---|
Common features in the Olympus E-M1X and Pentax K100D
| E-M1X | K100D | |||
|---|---|---|---|---|
| Focus manually | Very precise focusing |
Olympus E-M1X vs Pentax K100D Physical Comparison
In case you're looking to carry your camera often, you will need to consider its weight and dimensions. The Olympus E-M1X features exterior measurements of 144mm x 147mm x 75mm (5.7" x 5.8" x 3.0") having a weight of 997 grams (2.20 lbs) and the Pentax K100D has dimensions of 129mm x 93mm x 70mm (5.1" x 3.7" x 2.8") accompanied by a weight of 660 grams (1.46 lbs).
Take a look at the Olympus E-M1X and Pentax K100D in the latest Camera and Lens Size Comparison Tool.
Keep in mind, the weight of an Interchangeable Lens Camera will vary depending on the lens you are utilising during that time. The following is a front view physical size comparison of the E-M1X compared to the K100D.

Using dimensions and weight, the portability grade of the E-M1X and K100D is 54 and 64 respectively.
Olympus E-M1X vs Pentax K100D Sensor Comparison
More often than not, it is tough to envision the gap in sensor sizing only by seeing technical specs. The visual underneath will offer you a more clear sense of the sensor measurements in the E-M1X and K100D.
As you have seen, both of these cameras provide different resolutions and different sensor sizing. The E-M1X because of its smaller sensor will make achieving shallow DOF more challenging and the Olympus E-M1X will provide more detail having its extra 14MP. Greater resolution will allow you to crop images more aggressively. The more recent E-M1X will have an edge when it comes to sensor technology.
Olympus E-M1X vs Pentax K100D Screen and ViewFinder
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Olympus E-M1X vs Pentax K100D Specifications
| Olympus OM-D E-M1X | Pentax K100D | |
|---|---|---|
| General Information | ||
| Brand | Olympus | Pentax |
| Model | Olympus OM-D E-M1X | Pentax K100D |
| Class | Pro Mirrorless | Entry-Level DSLR |
| Revealed | 2019-01-24 | 2006-12-03 |
| Body design | SLR-style mirrorless | Compact SLR |
| Sensor Information | ||
| Processor | Dual TruePic VIII | - |
| Sensor type | CMOS | CCD |
| Sensor size | Four Thirds | APS-C |
| Sensor dimensions | 17.4 x 13mm | 23.5 x 15.7mm |
| Sensor surface area | 226.2mm² | 369.0mm² |
| Sensor resolution | 20MP | 6MP |
| Anti aliasing filter | ||
| Aspect ratio | 4:3 | 3:2 |
| Highest resolution | 5184 x 3888 | 3008 x 2008 |
| Highest native ISO | 25600 | 3200 |
| Lowest native ISO | 200 | 200 |
| RAW photos | ||
| Lowest boosted ISO | 64 | - |
| Autofocusing | ||
| Focus manually | ||
| Touch focus | ||
| AF continuous | ||
| Single AF | ||
| Tracking AF | ||
| AF selectice | ||
| Center weighted AF | ||
| Multi area AF | ||
| Live view AF | ||
| Face detection focusing | ||
| Contract detection focusing | ||
| Phase detection focusing | ||
| Number of focus points | 121 | 11 |
| Lens | ||
| Lens mounting type | Micro Four Thirds | Pentax KAF |
| Available lenses | 107 | 151 |
| Crop factor | 2.1 | 1.5 |
| Screen | ||
| Range of screen | Fully Articulated | Fixed Type |
| Screen sizing | 3 inch | 2.5 inch |
| Screen resolution | 1,037k dot | 210k dot |
| Selfie friendly | ||
| Liveview | ||
| Touch friendly | ||
| Viewfinder Information | ||
| Viewfinder | Electronic | Optical (pentamirror) |
| Viewfinder resolution | 2,360k dot | - |
| Viewfinder coverage | 100 percent | 96 percent |
| Viewfinder magnification | 0.74x | 0.57x |
| Features | ||
| Lowest shutter speed | 60s | 30s |
| Highest shutter speed | 1/8000s | 1/4000s |
| Highest silent shutter speed | 1/32000s | - |
| Continuous shooting speed | 60.0 frames/s | 3.0 frames/s |
| Shutter priority | ||
| Aperture priority | ||
| Manually set exposure | ||
| Exposure compensation | Yes | Yes |
| Set WB | ||
| Image stabilization | ||
| Built-in flash | ||
| Flash range | 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, On, Off, Red-eye reduction |
| External flash | ||
| Auto exposure bracketing | ||
| WB bracketing | ||
| Highest flash sync | - | 1/180s |
| Exposure | ||
| Multisegment | ||
| Average | ||
| Spot | ||
| Partial | ||
| AF area | ||
| Center weighted | ||
| Video features | ||
| Supported video resolutions | 4096 x 2160 @ 24p / 237 Mbps, MOV, H.264, Linear PCM | - |
| Highest video resolution | 4096x2160 | None |
| Video data format | MPEG-4, H.264 | - |
| Mic jack | ||
| Headphone jack | ||
| Connectivity | ||
| Wireless | Built-In | None |
| Bluetooth | ||
| NFC | ||
| HDMI | ||
| USB | Yes (USB-PD allows charging by laptop or external power bank) | USB 2.0 (480 Mbit/sec) |
| GPS | Built-in | None |
| Physical | ||
| Environment seal | ||
| Water proof | ||
| Dust proof | ||
| Shock proof | ||
| Crush proof | ||
| Freeze proof | ||
| Weight | 997 grams (2.20 pounds) | 660 grams (1.46 pounds) |
| Physical dimensions | 144 x 147 x 75mm (5.7" x 5.8" x 3.0") | 129 x 93 x 70mm (5.1" x 3.7" x 2.8") |
| 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 | 870 images | - |
| Form of battery | Built-in | - |
| Battery model | - | 4 x AA |
| Self timer | Yes (2 or 12 secs, custom) | Yes (2 or 12 sec) |
| Time lapse feature | ||
| Storage media | - | SD/MMC card |
| Storage slots | 2 | One |
| Pricing at launch | $2,999 | $0 |