Olympus E-M1X vs Pentax K-S1
Portability
54 Imaging
61 Features
93 Overall
73
54 Imaging
61 Features
93 Overall
73
Portability
69 Imaging
63 Features
70 Overall
65
69 Imaging
63 Features
70 Overall
65
Olympus E-M1X vs Pentax K-S1 Key Specs
Olympus E-M1X
(Full Review)
(Full Review)
- 20MP - Four Thirds Sensor
- 3" Fully Articulated Display
- 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
- Older Model is Olympus E-M1 II
Pentax K-S1
(Full Review)
(Full Review)
- 20MP - APS-C Sensor
- 3" Fixed Screen
- ISO 100 - 51200
- Sensor based Image Stabilization
- No Anti-Alias Filter
- 1/6000s Maximum Shutter
- 1920 x 1080 video
- Pentax KAF2 Mount
- 558g - 121 x 93 x 70mm
- Launched August 2014
- Successor is Pentax K-S2
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Its time to look a bit more closely at the Olympus E-M1X and Pentax K-S1, former being a Pro Mirrorless while the latter is a Advanced DSLR by competitors Olympus and Pentax. The resolution of the E-M1X (20MP) and the K-S1 (20MP) is pretty similar but the E-M1X (Four Thirds) and K-S1 (APS-C) have different sensor dimensions.
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Before getting right into a complete comparison, here is a simple overview of how the E-M1X matches up vs the K-S1 in regards to portability, imaging, features and an overall grade.
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This is a preview of the gallery images for Olympus OM-D E-M1X & Pentax K-S1. The complete galleries are available at Olympus E-M1X Gallery & Pentax K-S1 Gallery.
Reasons to pick Olympus E-M1X over the Pentax K-S1
| E-M1X | K-S1 | |||
|---|---|---|---|---|
| Launched | January 2019 |  | August 2014 | More recent by 54 months |
| Screen type | Fully Articulated |  | Fixed | Fully Articulating screen |
| Screen resolution | 1037k |  | 921k | Sharper screen (+116k dot) |
| Selfie screen |  | Take selfies | ||
| Touch friendly screen |  | Quickly navigate |
Reasons to pick Pentax K-S1 over the Olympus E-M1X
| K-S1 | E-M1X |
|---|
Common features in the Olympus E-M1X and Pentax K-S1
| E-M1X | K-S1 | |||
|---|---|---|---|---|
| Manually focus |  | Very precise focusing | ||
| Screen size | 3" |  | 3" | Same screen sizing |
Olympus E-M1X vs Pentax K-S1 Physical Comparison
If you are planning to lug around your camera often, you will need to factor its weight and size. The Olympus E-M1X offers exterior dimensions of 144mm x 147mm x 75mm (5.7" x 5.8" x 3.0") accompanied by a weight of 997 grams (2.20 lbs) and the Pentax K-S1 has specifications of 121mm x 93mm x 70mm (4.8" x 3.7" x 2.8") along with a weight of 558 grams (1.23 lbs).
Contrast the Olympus E-M1X and Pentax K-S1 in our newest Camera plus Lens Size Comparison Tool.
Remember that, the weight of an ILC will differ dependant on the lens you have chosen during that time. The following is a front view over all size comparison of the E-M1X versus the K-S1.
Taking into account size and weight, the portability score of the E-M1X and K-S1 is 54 and 69 respectively.
Olympus E-M1X vs Pentax K-S1 Sensor Comparison
Usually, it is very hard to picture the gap between sensor measurements purely by reading a spec sheet. The graphic below might give you a clearer sense of the sensor dimensions in the E-M1X and K-S1.
As you can see, both of the cameras come with the identical resolution albeit different sensor measurements. The E-M1X has got the tinier sensor which is going to make achieving shallow DOF tougher. The more recent E-M1X provides a benefit in sensor tech.
Olympus E-M1X vs Pentax K-S1 Screen and ViewFinder
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Portrait Comparison
Olympus E-M1X Portrait photography information
Pentax K-S1 Portrait photography information
you can focus manually
MP count good (20MP)
sensor size is nice (Four Thirds)
features face detect focusing
delivers RAW files
you can focus manually
good resolution (20MP)
nice sensor size (APS-C)
has face detection focusing
delivers RAW formats
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Olympus E-M1X Street photography info
Pentax K-S1 Street photography info
screen articulates
image stabilization (Sensor based 5-axis)
sensor size is nice (Four Thirds)
delivers RAW files
includes touch focus
environment sealing
above average high ISO (25,600)
heavier than average in class (997 grams)
has image stabilization (Sensor based)
nice sensor size (APS-C)
delivers RAW formats
lighter than competition (558 grams)
above average ISO range (51,200)
screen is fixed
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Olympus E-M1X Sports photography info
Pentax K-S1 Sports photography info
max shutter speed is good (1/8,000 seconds)
quiet shutter (1/32,000 seconds)
max fps high (60.0 frames per second)
image stabilization (Sensor based 5-axis)
MP count good (20 megapixels)
sensor size is nice (Four Thirds)
features tracking focus
environment sealing
good battery life (870 CIPA)
has phase detect AF
max shutter speed is good (1/6,000 seconds)
has image stabilization (Sensor based)
good resolution (20MP)
nice sensor size (APS-C)
has tracking autofocus
has phase detect AF
low fps (5.4 frames/s)
low battery life (410 shots)
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Olympus E-M1X Travel photography advice
Pentax K-S1 Travel photography advice
good battery life (870 CIPA)
environment sealing
connects via bluetooth
includes touch focus
MP count good (20 megapixels)
screen is selfie friendly
heavier than average in class (997g)
lighter than competition (558 grams)
good resolution (20MP)
has built in flash
lack of Time Lapse recording
low battery life (410 shots)
display is not selfie friendly
Photography GlossaryLandscape Comparison
Olympus E-M1X Landscape photography advice
Pentax K-S1 Landscape photography advice
you can focus manually
switch lenses (Micro Four Thirds mount)
good sized screen (3 inch)
image stabilization (Sensor based 5-axis)
MP count good (20MP)
sensor size is nice (Four Thirds)
above average high ISO (25,600)
delivers RAW files
environment sealing
good battery life (870 per charge)
two card slots
you can focus manually
interchangeable lenses (Pentax KAF2 mount)
screen is a good size (3 inch)
has image stabilization (Sensor based)
good resolution (20 megapixels)
nice sensor size (APS-C)
does not have anti-alias filter
above average ISO range (51,200)
delivers RAW formats
low battery life (410 per charge)
lack of Time Lapse recording
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Olympus E-M1X Vlogging features
Pentax K-S1 Vlogging features
screen is selfie friendly
touchscreen enabled
image stabilization (Sensor based 5-axis)
features face detect focusing
video resolution high (4096 x 2160 resolution)
has mic socket
heavier than average in class (997g)
has image stabilization (Sensor based)
has face detection focusing
high quality video (1920 x 1080 pixels)
lighter than competition (558 grams)
display is not selfie friendly
lack of external mic socket
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Olympus E-M1X vs Pentax K-S1 Specifications
| Olympus OM-D E-M1X | Pentax K-S1 | |
|---|---|---|
| General Information | ||
| Make | Olympus | Pentax |
| Model type | Olympus OM-D E-M1X | Pentax K-S1 |
| Class | Pro Mirrorless | Advanced DSLR |
| Revealed | 2019-01-24 | 2014-08-27 |
| Physical type | SLR-style mirrorless | Mid-size SLR |
| Sensor Information | ||
| Powered by | Dual TruePic VIII | Prime MII |
| Sensor type | CMOS | CMOS |
| Sensor size | Four Thirds | APS-C |
| Sensor dimensions | 17.4 x 13mm | 23.5 x 15.6mm |
| Sensor area | 226.2mm² | 366.6mm² |
| Sensor resolution | 20MP | 20MP |
| Anti alias filter | ||
| Aspect ratio | 4:3 | 3:2 |
| Max resolution | 5184 x 3888 | 5472 x 3648 |
| Max native ISO | 25600 | 51200 |
| Minimum native ISO | 200 | 100 |
| RAW photos | ||
| Minimum enhanced ISO | 64 | - |
| Autofocusing | ||
| Manual focusing | ||
| Autofocus touch | ||
| Autofocus continuous | ||
| Single autofocus | ||
| Autofocus tracking | ||
| Autofocus selectice | ||
| Autofocus center weighted | ||
| Multi area autofocus | ||
| Live view autofocus | ||
| Face detect focus | ||
| Contract detect focus | ||
| Phase detect focus | ||
| Total focus points | 121 | 11 |
| Lens | ||
| Lens support | Micro Four Thirds | Pentax KAF2 |
| Number of lenses | 107 | 151 |
| Focal length multiplier | 2.1 | 1.5 |
| Screen | ||
| Type of display | Fully Articulated | Fixed Type |
| Display size | 3" | 3" |
| Resolution of display | 1,037k dots | 921k dots |
| Selfie friendly | ||
| Liveview | ||
| Touch screen | ||
| Viewfinder Information | ||
| Viewfinder | Electronic | Optical (pentaprism) |
| Viewfinder resolution | 2,360k dots | - |
| Viewfinder coverage | 100 percent | 100 percent |
| Viewfinder magnification | 0.74x | 0.64x |
| Features | ||
| Minimum shutter speed | 60 seconds | 30 seconds |
| Fastest shutter speed | 1/8000 seconds | 1/6000 seconds |
| Fastest quiet shutter speed | 1/32000 seconds | - |
| Continuous shutter rate | 60.0fps | 5.4fps |
| Shutter priority | ||
| Aperture priority | ||
| Expose Manually | ||
| Exposure compensation | Yes | Yes |
| Set white balance | ||
| Image stabilization | ||
| Inbuilt flash | ||
| Flash distance | no built-in flash | 10.00 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, auto + redeye, on, on + redeye reduction, slow sync, trailing curtain sync, manual |
| External flash | ||
| Auto exposure bracketing | ||
| White balance bracketing | ||
| 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 PCM | 1920 x 1080 (30,25,24 fps), 1280 x 720 (60,50 fps) |
| Max video resolution | 4096x2160 | 1920x1080 |
| Video data format | MPEG-4, H.264 | H.264 |
| Mic port | ||
| Headphone port | ||
| Connectivity | ||
| Wireless | Built-In | Eye-Fi Connected |
| Bluetooth | ||
| NFC | ||
| HDMI | ||
| USB | Yes (USB-PD allows charging by laptop or external power bank) | USB 2.0 (480 Mbit/sec) |
| GPS | Built-in | Optional |
| Physical | ||
| Environmental sealing | ||
| Water proofing | ||
| Dust proofing | ||
| Shock proofing | ||
| Crush proofing | ||
| Freeze proofing | ||
| Weight | 997g (2.20 lbs) | 558g (1.23 lbs) |
| Physical dimensions | 144 x 147 x 75mm (5.7" x 5.8" x 3.0") | 121 x 93 x 70mm (4.8" x 3.7" x 2.8") |
| DXO scores | ||
| DXO Overall 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 | 870 photos | 410 photos |
| Battery type | Built-in | Battery Pack |
| Battery ID | - | D-LI109 |
| Self timer | Yes (2 or 12 secs, custom) | Yes ( 2 or 12 seconds) |
| Time lapse recording | ||
| Storage type | - | SD/SDHC/SDXC |
| Card slots | Dual | 1 |
| Retail pricing | $2,999 | $339 |