Olympus E-PL9 vs Pentax K-S1
85 Imaging
55 Features
78 Overall
64
69 Imaging
63 Features
70 Overall
65
Olympus E-PL9 vs Pentax K-S1 Key Specs
(Full Review)
- 16MP - Four Thirds Sensor
- 3" Tilting Display
- ISO 200 - 6400 (Expand to 25600)
- Sensor based Image Stabilization
- 3840 x 2160 video
- Micro Four Thirds Mount
- 380g - 117 x 68 x 39mm
- Announced February 2018
- Superseded the Olympus E-PL8
(Full Review)
- 20MP - APS-C Sensor
- 3" Fixed Display
- 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
- Released August 2014
- Refreshed by Pentax K-S2
Snapchat Adds Watermarks to AI-Created Images Olympus E-PL9 vs Pentax K-S1 Overview
Following is a in-depth overview of the Olympus E-PL9 versus Pentax K-S1, former is a Entry-Level Mirrorless while the other is a Advanced DSLR by rivals Olympus and Pentax. The image resolution of the E-PL9 (16MP) and the K-S1 (20MP) is fairly similar but the E-PL9 (Four Thirds) and K-S1 (APS-C) have totally different sensor measurements.
Photobucket discusses licensing 13 billion images with AI firmsThe E-PL9 was brought out 3 years after the K-S1 which is quite a serious difference as far as tech is concerned. Both cameras have different body design with the Olympus E-PL9 being a Rangefinder-style mirrorless camera and the Pentax K-S1 being a Mid-size SLR camera.
Before we go into a step-by-step comparison, here is a brief overview of how the E-PL9 scores vs the K-S1 in relation to portability, imaging, features and an overall score.
Photography Glossary Olympus E-PL9 vs Pentax K-S1 Gallery
Below is a sample of the gallery pictures for Olympus PEN E-PL9 & Pentax K-S1. The entire galleries are available at Olympus E-PL9 Gallery & Pentax K-S1 Gallery.
Reasons to pick Olympus E-PL9 over the Pentax K-S1
| E-PL9 | K-S1 | |||
|---|---|---|---|---|
| Released | February 2018 | August 2014 | More modern by 43 months | |
| Display type | Tilting | Fixed | Tilting display | |
| Display resolution | 1040k | 921k | Sharper display (+119k dot) | |
| Touch friendly display | Easily navigate |
Reasons to pick Pentax K-S1 over the Olympus E-PL9
| K-S1 | E-PL9 |
|---|
Common features in the Olympus E-PL9 and Pentax K-S1
| E-PL9 | K-S1 | |||
|---|---|---|---|---|
| Manual focus | More precise focusing | |||
| Display dimensions | 3" | 3" | Equal display measurements | |
| Selfie screen | Neither features selfie screen |
Olympus E-PL9 vs Pentax K-S1 Physical Comparison
In case you're looking to carry around your camera regularly, you will have to take into account its weight and proportions. The Olympus E-PL9 enjoys outer dimensions of 117mm x 68mm x 39mm (4.6" x 2.7" x 1.5") with a weight of 380 grams (0.84 lbs) and the Pentax K-S1 has measurements of 121mm x 93mm x 70mm (4.8" x 3.7" x 2.8") with a weight of 558 grams (1.23 lbs).
Take a look at the Olympus E-PL9 versus Pentax K-S1 in our brand new Camera & Lens Size Comparison Tool.
Keep in mind, the weight of an ILC will differ based on the lens you have at that time. The following is a front view overall size comparison of the E-PL9 and the K-S1.

Factoring in size and weight, the portability grade of the E-PL9 and K-S1 is 85 and 69 respectively.
Olympus E-PL9 vs Pentax K-S1 Sensor Comparison
Usually, its difficult to visualise the difference between sensor sizes purely by going over specs. The image below should offer you a stronger sense of the sensor dimensions in the E-PL9 and K-S1.
All in all, both of these cameras provide different megapixels and different sensor sizes. The E-PL9 because of its tinier sensor will make getting shallow DOF tougher and the Pentax K-S1 will offer you greater detail having its extra 4MP. Greater resolution will also make it easier to crop pics more aggressively. The more modern E-PL9 is going to have an advantage when it comes to sensor tech.
Olympus E-PL9 vs Pentax K-S1 Screen and ViewFinder
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Olympus E-PL9 vs Pentax K-S1 Specifications
| Olympus PEN E-PL9 | Pentax K-S1 | |
|---|---|---|
| General Information | ||
| Manufacturer | Olympus | Pentax |
| Model type | Olympus PEN E-PL9 | Pentax K-S1 |
| Class | Entry-Level Mirrorless | Advanced DSLR |
| Announced | 2018-02-08 | 2014-08-27 |
| Body design | Rangefinder-style mirrorless | Mid-size SLR |
| Sensor Information | ||
| Chip | TruePic VIII | Prime MII |
| Sensor type | CMOS | CMOS |
| Sensor size | Four Thirds | APS-C |
| Sensor dimensions | 17.3 x 13mm | 23.5 x 15.6mm |
| Sensor surface area | 224.9mm² | 366.6mm² |
| Sensor resolution | 16 megapixels | 20 megapixels |
| Anti alias filter | ||
| Aspect ratio | 1:1, 4:3, 3:2 and 16:9 | 3:2 |
| Max resolution | 4608 x 3456 | 5472 x 3648 |
| Max native ISO | 6400 | 51200 |
| Max enhanced ISO | 25600 | - |
| Minimum native ISO | 200 | 100 |
| RAW photos | ||
| Minimum enhanced ISO | 100 | - |
| Autofocusing | ||
| Focus manually | ||
| Touch to focus | ||
| Continuous autofocus | ||
| Single autofocus | ||
| Autofocus tracking | ||
| Autofocus selectice | ||
| Autofocus center weighted | ||
| Autofocus multi area | ||
| Live view autofocus | ||
| Face detect autofocus | ||
| Contract detect autofocus | ||
| Phase detect autofocus | ||
| Total focus points | 121 | 11 |
| Lens | ||
| Lens support | Micro Four Thirds | Pentax KAF2 |
| Amount of lenses | 107 | 151 |
| Crop factor | 2.1 | 1.5 |
| Screen | ||
| Range of display | Tilting | Fixed Type |
| Display size | 3 inch | 3 inch |
| Resolution of display | 1,040 thousand dot | 921 thousand dot |
| Selfie friendly | ||
| Liveview | ||
| Touch operation | ||
| Viewfinder Information | ||
| Viewfinder type | Electronic (optional) | Optical (pentaprism) |
| Viewfinder coverage | - | 100% |
| Viewfinder magnification | - | 0.64x |
| Features | ||
| Min shutter speed | 60 secs | 30 secs |
| Max shutter speed | 1/4000 secs | 1/6000 secs |
| Max quiet shutter speed | 1/16000 secs | - |
| Continuous shutter speed | 8.6 frames per second | 5.4 frames per second |
| Shutter priority | ||
| Aperture priority | ||
| Manually set exposure | ||
| Exposure compensation | Yes | Yes |
| Set white balance | ||
| Image stabilization | ||
| Built-in flash | ||
| Flash distance | 7.60 m (at ISO 200) | 10.00 m (at ISO 100) |
| Flash options | Auto, manual, redeye reduction, slow sync w/redeye reduction, slow sync , slow sync 2nd-curtain, fill-in, off | Auto, auto + redeye, on, on + redeye reduction, slow sync, trailing curtain sync, manual |
| External flash | ||
| AEB | ||
| White balance bracketing | ||
| Exposure | ||
| Multisegment metering | ||
| Average metering | ||
| Spot metering | ||
| Partial metering | ||
| AF area metering | ||
| Center weighted metering | ||
| Video features | ||
| Video resolutions | 3840 x 2160 @ 30p / 102 Mbps, MOV, H.264, Linear PCM | 1920 x 1080 (30,25,24 fps), 1280 x 720 (60,50 fps) |
| Max video resolution | 3840x2160 | 1920x1080 |
| Video data format | MPEG-4, H.264 | H.264 |
| Mic jack | ||
| Headphone jack | ||
| Connectivity | ||
| Wireless | Built-In | Eye-Fi Connected |
| Bluetooth | ||
| NFC | ||
| HDMI | ||
| USB | USB 2.0 (480 Mbit/sec) | USB 2.0 (480 Mbit/sec) |
| GPS | None | Optional |
| Physical | ||
| Environment seal | ||
| Water proofing | ||
| Dust proofing | ||
| Shock proofing | ||
| Crush proofing | ||
| Freeze proofing | ||
| Weight | 380 grams (0.84 pounds) | 558 grams (1.23 pounds) |
| Physical dimensions | 117 x 68 x 39mm (4.6" x 2.7" x 1.5") | 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 | 350 photos | 410 photos |
| Battery form | Battery Pack | Battery Pack |
| Battery ID | - | D-LI109 |
| Self timer | Yes (2 or 12 secs, custom) | Yes ( 2 or 12 seconds) |
| Time lapse feature | ||
| Type of storage | SD/SDHC/SDXC card (UHS-I supported) | SD/SDHC/SDXC |
| Storage slots | Single | Single |
| Price at release | $599 | $339 |