Olympus E-300 vs Pentax K-x
67 Imaging
41 Features
31 Overall
37
69 Imaging
51 Features
47 Overall
49
Olympus E-300 vs Pentax K-x Key Specs
(Full Review)
- 8MP - Four Thirds Sensor
- 1.8" Fixed Screen
- ISO 100 - 400 (Raise to 1600)
- No Video
- Micro Four Thirds Mount
- 624g - 147 x 85 x 64mm
- Introduced January 2005
- Additionally referred to as EVOLT E-300
- Replacement is Olympus E-330
(Full Review)
- 12MP - APS-C Sensor
- 2.7" Fixed Screen
- ISO 100 - 6400 (Push to 12800)
- Sensor based Image Stabilization
- 1/6000s Maximum Shutter
- 1280 x 720 video
- Pentax KAF2 Mount
- 580g - 123 x 92 x 68mm
- Revealed December 2009
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On this page, we will be looking at the Olympus E-300 vs Pentax K-x, former is a Advanced DSLR while the latter is a Entry-Level DSLR by competitors Olympus and Pentax. There exists a large gap between the sensor resolutions of the E-300 (8MP) and K-x (12MP) and the E-300 (Four Thirds) and K-x (APS-C) provide totally different sensor sizing.
Samsung Releases Faster Versions of EVO MicroSD CardsThe E-300 was unveiled 6 years before the K-x which is quite a serious difference as far as technology is concerned. Each of these cameras have different body design with the Olympus E-300 being a Mid-size SLR camera and the Pentax K-x being a Compact SLR camera.
Before diving straight to a more detailed comparison, here is a quick summation of how the E-300 grades against the K-x when it comes to portability, imaging, features and an overall score.
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Following is a preview of the gallery images for Olympus E-300 & Pentax K-x. The full galleries are provided at Olympus E-300 Gallery & Pentax K-x Gallery.
Reasons to pick Olympus E-300 over the Pentax K-x
| E-300 | K-x |
|---|
Reasons to pick Pentax K-x over the Olympus E-300
| K-x | E-300 | |||
|---|---|---|---|---|
| Revealed | December 2009 | January 2005 | More modern by 60 months | |
| Screen dimensions | 2.7" | 1.8" | Bigger screen (+0.9") | |
| Screen resolution | 230k | 134k | Crisper screen (+96k dot) |
Common features in the Olympus E-300 and Pentax K-x
| E-300 | K-x | |||
|---|---|---|---|---|
| Manually focus | Very precise focus | |||
| Screen type | Fixed | Fixed | Fixed screen | |
| Selfie screen | Neither comes with selfie screen | |||
| Touch friendly screen | Missing Touch friendly screen |
Olympus E-300 vs Pentax K-x Physical Comparison
When you are planning to carry around your camera often, you will have to consider its weight and measurements. The Olympus E-300 comes with outside dimensions of 147mm x 85mm x 64mm (5.8" x 3.3" x 2.5") with a weight of 624 grams (1.38 lbs) whilst the Pentax K-x has proportions of 123mm x 92mm x 68mm (4.8" x 3.6" x 2.7") along with a weight of 580 grams (1.28 lbs).
Compare the Olympus E-300 vs Pentax K-x in our completely new Camera plus Lens Size Comparison Tool.
Do not forget, the weight of an ILC will differ dependant on the lens you select at that moment. Following is a front view over all size comparison of the E-300 and the K-x.

Taking into consideration dimensions and weight, the portability score of the E-300 and K-x is 67 and 69 respectively.
Olympus E-300 vs Pentax K-x Sensor Comparison
Normally, its hard to visualise the difference between sensor sizes purely by reading through specs. The image below will help offer you a far better sense of the sensor dimensions in the E-300 and K-x.
All in all, both of these cameras have different megapixels and different sensor sizes. The E-300 with its tinier sensor will make shooting shallower DOF more difficult and the Pentax K-x will give you more detail having an extra 4MP. Higher resolution can also let you crop shots a bit more aggressively. The more aged E-300 is going to be disadvantaged when it comes to sensor technology.
Olympus E-300 vs Pentax K-x Screen and ViewFinder
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Olympus E-300 vs Pentax K-x Specifications
| Olympus E-300 | Pentax K-x | |
|---|---|---|
| General Information | ||
| Make | Olympus | Pentax |
| Model | Olympus E-300 | Pentax K-x |
| Also called | EVOLT E-300 | - |
| Class | Advanced DSLR | Entry-Level DSLR |
| Introduced | 2005-01-10 | 2009-12-23 |
| Physical type | Mid-size SLR | Compact SLR |
| Sensor Information | ||
| Chip | - | Prime |
| Sensor type | CCD | CMOS |
| Sensor size | Four Thirds | APS-C |
| Sensor measurements | 17.3 x 13mm | 23.6 x 15.8mm |
| Sensor area | 224.9mm² | 372.9mm² |
| Sensor resolution | 8 megapixel | 12 megapixel |
| Anti aliasing filter | ||
| Aspect ratio | 4:3 | 3:2 |
| Max resolution | 3264 x 2448 | 4288 x 2848 |
| Max native ISO | 400 | 6400 |
| Max enhanced ISO | 1600 | 12800 |
| Minimum native ISO | 100 | 100 |
| RAW support | ||
| Autofocusing | ||
| Manual focus | ||
| AF touch | ||
| Continuous AF | ||
| AF single | ||
| AF tracking | ||
| Selective AF | ||
| AF center weighted | ||
| AF multi area | ||
| AF live view | ||
| Face detection AF | ||
| Contract detection AF | ||
| Phase detection AF | ||
| Number of focus points | 3 | 11 |
| Lens | ||
| Lens mount | Micro Four Thirds | Pentax KAF2 |
| Amount of lenses | 45 | 151 |
| Focal length multiplier | 2.1 | 1.5 |
| Screen | ||
| Type of screen | Fixed Type | Fixed Type |
| Screen size | 1.8 inches | 2.7 inches |
| Screen resolution | 134 thousand dots | 230 thousand dots |
| Selfie friendly | ||
| Liveview | ||
| Touch screen | ||
| Screen tech | - | TFT LCD monitor |
| Viewfinder Information | ||
| Viewfinder type | Optical (pentamirror) | Optical (pentamirror) |
| Viewfinder coverage | - | 96% |
| Viewfinder magnification | - | 0.57x |
| Features | ||
| Minimum shutter speed | 60 seconds | 30 seconds |
| Fastest shutter speed | 1/4000 seconds | 1/6000 seconds |
| Continuous shutter rate | 3.0fps | 5.0fps |
| Shutter priority | ||
| Aperture priority | ||
| Manually set exposure | ||
| Exposure compensation | Yes | Yes |
| Change WB | ||
| Image stabilization | ||
| Inbuilt flash | ||
| Flash range | - | 16.00 m |
| Flash modes | Auto, Auto FP, Manual, Red-Eye | Auto, On, Off, Red-Eye, Slow Sync, Rear curtain, Wireless |
| Hot shoe | ||
| AE bracketing | ||
| White balance bracketing | ||
| Fastest flash synchronize | 1/180 seconds | 1/180 seconds |
| Exposure | ||
| Multisegment | ||
| Average | ||
| Spot | ||
| Partial | ||
| AF area | ||
| Center weighted | ||
| Video features | ||
| Supported video resolutions | - | 1280 x 720 (24 fps), 640 x 416 (24 fps) |
| Max video resolution | None | 1280x720 |
| Video file format | - | Motion JPEG |
| Microphone support | ||
| Headphone support | ||
| Connectivity | ||
| Wireless | None | None |
| Bluetooth | ||
| NFC | ||
| HDMI | ||
| USB | USB 1.0 (1.5 Mbit/sec) | USB 2.0 (480 Mbit/sec) |
| GPS | None | None |
| Physical | ||
| Environmental sealing | ||
| Water proof | ||
| Dust proof | ||
| Shock proof | ||
| Crush proof | ||
| Freeze proof | ||
| Weight | 624 gr (1.38 pounds) | 580 gr (1.28 pounds) |
| Physical dimensions | 147 x 85 x 64mm (5.8" x 3.3" x 2.5") | 123 x 92 x 68mm (4.8" x 3.6" x 2.7") |
| DXO scores | ||
| DXO Overall score | not tested | 72 |
| DXO Color Depth score | not tested | 22.8 |
| DXO Dynamic range score | not tested | 12.5 |
| DXO Low light score | not tested | 811 |
| Other | ||
| Battery life | - | 1900 pictures |
| Battery style | - | Battery Pack |
| Battery model | - | 4 x AA |
| Self timer | Yes (2 or 12 sec) | Yes (2 or 12 sec) |
| Time lapse shooting | ||
| Storage type | Compact Flash (Type I or II) | SD/SDHC card |
| Card slots | Single | Single |
| Launch price | $800 | $600 |