Olympus E-300 vs Pentax K-3 III
The Olympus Evolt E-300 and the Pentax K-3 III are two digital cameras that were announced, respectively, in September 2004 and March 2021. Both are DSLR (Digital Single Lens Reflex) cameras that are based on a Four Thirds (E-300) and an APS-C (K-3 III) sensor. The Olympus has a resolution of 8 megapixels, whereas the Pentax provides 25.6 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.
Going beyond this snapshot of core features and characteristics, what are the differences between the Olympus Evolt E-300 and the Pentax K-3 III? Which one should you buy? Read on to find out how these two cameras compare with respect to their body size, their imaging sensors, their shooting features, their input-output connections, and their reception by expert reviewers.
Body comparison
The side-by-side display below illustrates the physical size and weight of the Olympus E-300 and the Pentax K-3 III. The two cameras are presented according to their relative size. Three consecutive views from the front, the top, and the rear side are shown. All width, height and depth dimensions are rounded to the nearest millimeter.
The K-3 III can be obtained in two different colors (black, silver), while the E-300 is only available in black.
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Pentax K-3 III is notably larger (12 percent) than the Olympus E-300. Moreover, the K-3 III is markedly heavier (31 percent) than the E-300. It is noteworthy in this context that the K-3 III is splash and dust-proof, while the E-300 does not feature any corresponding weather-sealing.
The above size and weight comparisons are to some extent incomplete since they do not consider the interchangeable lenses that both of these cameras require. Hence, you might want to study and compare the specifications of available lenses in order to get the full picture of the size and weight of the two camera systems.
Concerning battery life, the E-300 gets 750 shots out of its Olympus BLM-1 battery, while the K-3 III can take 800 images on a single charge of its Pentax D-LI90 power pack.
The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. If you want to switch the focus of the display and review another camera pair, you can move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.
# | Camera Model |
Camera Width |
Camera Height |
Camera Depth |
Camera Weight |
Battery Life |
Weather Sealing |
Camera Launch |
Launch Price (USD) |
Street Price |
|
---|---|---|---|---|---|---|---|---|---|---|---|
1. | Olympus E-300 | 147 mm | 85 mm | 64 mm | 624 g | 750 | n | Sep 2004 | 799 | ebay.com | |
2. | Pentax K-3 III | 135 mm | 104 mm | 74 mm | 820 g | 800 | Y | Mar 2021 | 1,999 | amazon.com | |
3. | Canon XT | 127 mm | 94 mm | 64 mm | 540 g | 400 | n | Feb 2005 | 899 | ebay.com | |
4. | Fujifilm X-H1 | 140 mm | 97 mm | 86 mm | 673 g | 310 | Y | Feb 2018 | 1,899 | ebay.com | |
5. | Leica Digilux 3 | 146 mm | 87 mm | 77 mm | 606 g | 750 | n | Sep 2006 | 1,499 | ebay.com | |
6. | Olympus E-620 | 130 mm | 94 mm | 60 mm | 521 g | 500 | n | Feb 2009 | 699 | ebay.com | |
7. | Olympus E-520 | 136 mm | 92 mm | 68 mm | 535 g | 750 | n | May 2008 | 699 | ebay.com | |
8. | Olympus E-410 | 130 mm | 91 mm | 53 mm | 435 g | 500 | n | Mar 2007 | 699 | ebay.com | |
9. | Olympus E-510 | 136 mm | 92 mm | 68 mm | 538 g | 750 | n | Mar 2007 | 799 | ebay.com | |
10. | Olympus E-330 | 140 mm | 87 mm | 72 mm | 637 g | 750 | n | Jan 2006 | 999 | ebay.com | |
11. | Olympus E-400 | 130 mm | 91 mm | 53 mm | 435 g | 500 | n | Sep 2006 | 699 | ebay.com | |
12. | Olympus E-500 | 130 mm | 95 mm | 66 mm | 479 g | 750 | n | Sep 2005 | 599 | ebay.com | |
13. | Olympus E-1 | 141 mm | 104 mm | 81 mm | 738 g | 750 | Y | Jun 2003 | 1,699 | ebay.com | |
14. | Pentax KP | 132 mm | 101 mm | 76 mm | 703 g | 390 | Y | Jan 2017 | 1,099 | ebay.com | |
15. | Pentax K-70 | 126 mm | 93 mm | 74 mm | 688 g | 410 | Y | Jun 2016 | 649 | ebay.com | |
16. | Pentax K-3 II | 131 mm | 100 mm | 77 mm | 800 g | 720 | Y | Apr 2015 | 1,099 | ebay.com | |
17. | Pentax K-3 | 131 mm | 100 mm | 77 mm | 800 g | 560 | Y | Oct 2013 | 1,299 | ebay.com | |
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders. | |||||||||||
Any camera decision will naturally be influenced heavily by the price. The retail prices at the time of the camera’s release place the model in the market relative to other models in the producer’s line-up and the competition. The E-300 was launched at a markedly lower price (by 60 percent) than the K-3 III, which puts it into a different market segment. Normally, street prices remain initially close to the MSRP, but after a couple of months, the first discounts appear. Later in the product cycle and, in particular, when the replacement model is about to appear, further discounting and stock clearance sales often push the camera price considerably down.
Sensor comparison
The size of the sensor inside a digital camera is one of the key determinants of image quality. A large sensor will generally have larger individual pixels that offer better low-light sensitivity, provide wider dynamic range, and have richer color-depth than smaller pixels in a sensor of the same technological generation. Further, a large sensor camera will give the photographer additional creative options when using shallow depth-of-field to isolate a subject from its background. On the downside, larger sensors are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.
Of the two cameras under consideration, the Olympus E-300 features a Four Thirds sensor and the Pentax K-3 III an APS-C sensor. The sensor area in the K-3 III is 60 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 2.0 and 1.5. The sensor in the E-300 has a native 4:3 aspect ratio, while the one in the K-3 III offers a 3:2 aspect.
With 25.6MP, the K-3 III offers a higher resolution than the E-300 (8MP), but the K-3 III has smaller individual pixels (pixel pitch of 3.76μm versus 5.30μm for the E-300). Yet, the K-3 III is a much more recent model (by 16 years and 6 months) than the E-300, and its sensor will have benefitted from technological advances during this time that enhance the light gathering capacity of its pixel-units. Coming back to sensor resolution, it should be mentioned that the K-3 III has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The resolution advantage of the Pentax K-3 III implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the K-3 III for good quality output (200 dots per inch) amounts to 31 x 20.6 inches or 78.6 x 52.4 cm, for very good quality (250 dpi) 24.8 x 16.5 inches or 62.9 x 41.9 cm, and for excellent quality (300 dpi) 20.6 x 13.8 inches or 52.4 x 35 cm. The corresponding values for the Olympus E-300 are 16.3 x 12.2 inches or 41.5 x 31.1 cm for good quality, 13.1 x 9.8 inches or 33.2 x 24.9 cm for very good quality, and 10.9 x 8.2 inches or 27.6 x 20.7 cm for excellent quality prints.
Unlike the E-300, the K-3 III has the capacity to capture high quality composite images (YESMP) by combining multiple shots after shifting its sensor by miniscule distances. This multi-shot, pixel-shift mode is most suitable for photography of stationary objects (landscapes, studio scenes).
The Olympus Evolt E-300 has a native sensitivity range from ISO 100 to ISO 400, which can be extended to ISO 100-1600. The corresponding ISO settings for the Pentax K-3 III are ISO 100 to ISO 160000 (no boost).
In terms of underlying technology, the E-300 is build around a CCD sensor, while the K-3 III uses a CMOS imager. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.
For many cameras, data on sensor performance has been reported by DXO Mark. This service is based on lab testing and assigns an overall score to each camera sensor, as well as ratings for dynamic range ("DXO Landscape"), color depth ("DXO Portrait"), and low-light sensitivity ("DXO Sports"). The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.
# | Camera Model |
Sensor Class |
Resolution (MP) |
Horiz. Pixels |
Vert. Pixels |
Video Format |
DXO Portrait |
DXO Landscape |
DXO Sports |
DXO Overall |
|
---|---|---|---|---|---|---|---|---|---|---|---|
1. | Olympus E-300 | Four Thirds | 8.0 | 3264 | 2448 | none | 20.4 | 10.1 | -40 | 48 | |
2. | Pentax K-3 III | APS-C | 25.6 | 6192 | 4128 | 4K/30p | 24.2 | 13.7 | 2083 | 85 | |
3. | Canon XT | APS-C | 8.0 | 3456 | 2304 | none | 21.8 | 10.8 | 637 | 60 | |
4. | Fujifilm X-H1 | APS-C | 24.0 | 6000 | 4000 | 4K/30p | 24.0 | 13.3 | 1806 | 82 | |
5. | Leica Digilux 3 | Four Thirds | 7.4 | 3136 | 2352 | none | 21.0 | 10.6 | 127 | 53 | |
6. | Olympus E-620 | Four Thirds | 12.2 | 4032 | 3024 | none | 21.3 | 10.3 | 536 | 55 | |
7. | Olympus E-520 | Four Thirds | 10.0 | 3648 | 2736 | none | 21.4 | 10.4 | 548 | 55 | |
8. | Olympus E-410 | Four Thirds | 10.0 | 3648 | 2736 | none | 21.1 | 10.0 | 494 | 51 | |
9. | Olympus E-510 | Four Thirds | 10.0 | 3648 | 2736 | none | 21.2 | 10.0 | 442 | 52 | |
10. | Olympus E-330 | Four Thirds | 7.4 | 3136 | 2352 | none | 20.8 | 10.4 | 73 | 52 | |
11. | Olympus E-400 | Four Thirds | 10.0 | 3648 | 2736 | none | 21.0 | 10.6 | 127 | 53 | |
12. | Olympus E-500 | Four Thirds | 8.0 | 3264 | 2448 | none | 20.7 | 10.3 | 45 | 51 | |
13. | Olympus E-1 | Four Thirds | 4.9 | 2560 | 1920 | none | 20.0 | 9.7 | -145 | 44 | |
14. | Pentax KP | APS-C | 24.1 | 6016 | 4000 | 1080/60i | 23.9 | 13.2 | 1699 | 81 | |
15. | Pentax K-70 | APS-C | 24.0 | 6000 | 4000 | 1080/60i | 23.8 | 13.1 | 1639 | 80 | |
16. | Pentax K-3 II | APS-C | 24.1 | 6016 | 4000 | 1080/60i | 23.6 | 13.6 | 1106 | 80 | |
17. | Pentax K-3 | APS-C | 24.1 | 6016 | 4000 | 1080/60i | 23.7 | 13.4 | 1216 | 80 | |
Note: DXO values in italics represent estimates based on sensor size and age. |
Many modern cameras are not only capable of taking still images, but also of capturing video footage. The K-3 III indeed provides for movie recording, while the E-300 does not. The highest resolution format that the K-3 III can use is 4K/30p.
Feature comparison
Apart from body and sensor, cameras can and do differ across a range of features. The E-300 and the K-3 III are similar in the sense that both have an optical viewfinder. The latter is useful for getting a clear image for framing even in brightly lit environments. The viewfinder in the K-3 III offers a wider field of view (100%) than the one in the E-300 (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the K-3 III has a higher magnification (0.70x vs 0.5x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The adjacent table lists some of the other core features of the Olympus E-300 and Pentax K-3 III along with similar information for a selection of comparators.
# | Camera Model |
Viewfinder (Type or 000 dots) |
Control Panel (yes/no) |
LCD Specifications (inch/000 dots) |
LCD Attach- ment |
Touch Screen (yes/no) |
Max Shutter Speed * |
Max Shutter Flaps * |
Built-in Flash (yes/no) |
Built-in Image Stab |
|
---|---|---|---|---|---|---|---|---|---|---|---|
1. | Olympus E-300 | optical | n | 1.8 / 134 | fixed | n | 1/4000s | 2.5/s | Y | n | |
2. | Pentax K-3 III | optical | Y | 3.2 / 1620 | fixed | Y | 1/8000s | 12.0/s | n | Y | |
3. | Canon XT | optical | n | 1.8 / 115 | fixed | n | 1/4000s | 3.0/s | Y | n | |
4. | Fujifilm X-H1 | 3690 | Y | 3.0 / 1040 | full-flex | Y | 1/8000s | 14.0/s | n | Y | |
5. | Leica Digilux 3 | optical | n | 2.5 / 207 | fixed | n | 1/4000s | 3.0/s | Y | n | |
6. | Olympus E-620 | optical | n | 2.7 / 230 | swivel | n | 1/4000s | 4.0/s | Y | Y | |
7. | Olympus E-520 | optical | n | 2.7 / 215 | fixed | n | 1/4000s | 3.5/s | Y | Y | |
8. | Olympus E-410 | optical | n | 2.5 / 215 | fixed | n | 1/4000s | 3.0/s | Y | n | |
9. | Olympus E-510 | optical | n | 2.5 / 215 | fixed | n | 1/4000s | 3.0/s | Y | Y | |
10. | Olympus E-330 | optical | n | 2.5 / 215 | tilting | n | 1/4000s | 3.0/s | Y | n | |
11. | Olympus E-400 | optical | n | 2.5 / 215 | fixed | n | 1/4000s | 3.0/s | Y | n | |
12. | Olympus E-500 | optical | n | 2.5 / 215 | fixed | n | 1/4000s | 2.5/s | Y | n | |
13. | Olympus E-1 | optical | Y | 1.8 / 134 | fixed | n | 1/4000s | 3.0/s | n | n | |
14. | Pentax KP | optical | n | 3.0 / 921 | tilting | n | 1/6000s | 7.0/s | Y | Y | |
15. | Pentax K-70 | optical | n | 3.0 / 921 | swivel | n | 1/6000s | 6.0/s | Y | Y | |
16. | Pentax K-3 II | optical | Y | 3.2 / 1037 | fixed | n | 1/8000s | 8.3/s | n | Y | |
17. | Pentax K-3 | optical | Y | 3.2 / 1037 | fixed | n | 1/8000s | 8.3/s | Y | Y | |
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one. |
One difference between the cameras concerns the presence of an on-board flash. The E-300 has one, while the K-3 III does not. While the built-in flash of the E-300 is not very powerful, it can at times be useful as a fill-in light.
The Pentax K-3 III has an intervalometer built-in. This enables the photographer to capture time lapse sequences, such as flower blooming, a sunset or moon rise, without purchasing an external camera trigger and related software.
The E-300 writes its imaging data to Compact Flash or xD Picture cards, while the K-3 III uses SDXC cards. Both cameras feature dual card slots, which can be very useful in case a memory card fails.
Connectivity comparison
For some imaging applications, the extent to which a camera can communicate with its environment can be an important aspect in the camera decision process. The table below provides an overview of the connectivity of the Olympus Evolt E-300 and Pentax K-3 III and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
# | Camera Model |
Hotshoe Port |
Internal Mic / Speaker |
Microphone Port |
Headphone Port |
HDMI Port |
USB Port |
WiFi Support |
NFC Support |
Bluetooth Support |
|
---|---|---|---|---|---|---|---|---|---|---|---|
1. | Olympus E-300 | Y | - / - | - | - | - | 2.0 | - | - | - | |
2. | Pentax K-3 III | Y | stereo / mono | Y | Y | micro | 3.2 | Y | - | Y | |
3. | Canon XT | Y | - / - | - | - | - | 2.0 | - | - | - | |
4. | Fujifilm X-H1 | Y | stereo / mono | Y | - | micro | 3.0 | Y | - | - | |
5. | Leica Digilux 3 | Y | stereo / mono | - | - | - | 2.0 | - | - | - | |
6. | Olympus E-620 | Y | - / - | - | - | - | 2.0 | - | - | - | |
7. | Olympus E-520 | Y | - / - | - | - | - | 2.0 | - | - | - | |
8. | Olympus E-410 | Y | - / - | - | - | - | 2.0 | - | - | - | |
9. | Olympus E-510 | Y | - / - | - | - | - | 2.0 | - | - | - | |
10. | Olympus E-330 | Y | - / - | - | - | - | 2.0 | - | - | - | |
11. | Olympus E-400 | Y | - / - | - | - | - | 2.0 | - | - | - | |
12. | Olympus E-500 | Y | - / - | - | - | - | 2.0 | - | - | - | |
13. | Olympus E-1 | Y | - / - | - | - | - | 2.0 | - | - | - | |
14. | Pentax KP | Y | stereo / mono | Y | - | - | 2.0 | Y | - | - | |
15. | Pentax K-70 | Y | stereo / mono | Y | - | mini | 2.0 | Y | - | - | |
16. | Pentax K-3 II | Y | mono / mono | Y | Y | mini | 3.0 | - | - | - | |
17. | Pentax K-3 | Y | mono / mono | Y | Y | mini | 3.0 | - | - | - |
It is notable that the K-3 III offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the E-300 does not provide wifi capability.
Studio photographers will appreciate that the Pentax K-3 III (unlike the E-300) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
Travel and landscape photographers will find it useful that the K-3 III has an internal geolocalization sensor and can record GPS coordinates in its EXIF data.
The K-3 III is a recent model that features in the current product line-up of Pentax. In contrast, the E-300 has been discontinued (but can be found pre-owned on ebay). As a replacement in the same line of cameras, the E-300 was succeeded by the Olympus E-330. Further information on the features and operation of the E-300 and K-3 III can be found, respectively, in the Olympus E-300 Manual (free pdf) or the online Pentax K-3 III Manual.
Review summary
So what is the bottom line? Which of the two cameras – the Olympus E-300 or the Pentax K-3 III – has the upper hand? Is one clearly better than the other? The listing below highlights the relative strengths of the two models.
Arguments in favor of the Olympus Evolt E-300:
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- More compact: Is smaller (147x85mm vs 135x104mm) and thus needs less room in the bag.
- Less heavy: Is lighter (by 196g or 24 percent) and hence easier to carry around.
- Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
- More affordable: Was introduced into a lower priced category (60 percent cheaper at launch).
- More heavily discounted: Has been available for much longer (launched in September 2004).
Advantages of the Pentax K-3 III:
- More detail: Has more megapixels (25.6 vs 8MP), which boosts linear resolution by 82%.
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- High quality composites: Can combine several shots after pixel-shifting its sensor.
- Better image quality: Is equipped with a larger and more technologically advanced sensor.
- Richer colors: The sensor size advantage translates into images with better, more accurate colors.
- More dynamic range: Larger sensor captures a wider spectrum of light and dark details.
- Better low-light sensitivity: Larger sensor produces good images even in poorly lit environments.
- Broader imaging potential: Can capture not only stills but also 4K/30p video.
- More complete view: Has a viewfinder with a larger field of view (100% vs 95%).
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.70x vs 0.5x).
- Easier setting verification: Features a control panel on top to check shooting parameters.
- Larger screen: Has a bigger rear LCD (3.2" vs 1.8") for image review and settings control.
- More detailed LCD: Has a higher resolution rear screen (1620k vs 134k dots).
- Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
- Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
- Faster burst: Shoots at higher frequency (12 vs 2.5 flaps/sec) to capture the decisive moment.
- Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
- Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
- Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
- Easier geotagging: Features an internal GPS sensor to log localization data.
- Faster data transfer: Supports a more advanced USB protocol (3.2 vs 2.0).
- Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
- Easier wireless transfer: Supports Bluetooth for image sharing without cables.
- Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
- More modern: Reflects 16 years and 6 months of technical progress since the E-300 launch.
If the number of relative strengths (bullet points above) is taken as a guide, the K-3 III is the clear winner of the contest (25 : 6 points). However, the relevance of individual strengths will vary across photographers, so that you might want to apply your own weighing scheme to the summary points when reflecting and deciding on a new camera. A professional wildlife photographer will view the differences between cameras in a way that diverges from the perspective of a family photog, and a person interested in architecture has distinct needs from a sports shooter. Hence, the decision which camera is best and worth buying is often a very personal one.
How about other alternatives? Do the specifications of the Olympus E-300 and the Pentax K-3 III place the cameras among the top in their class? Find out in the latest Best DSLR Camera listing whether the two cameras rank among the cream of the crop.
In any case, while the specs-based evaluation of cameras can be instructive in revealing their potential as photographic tools, it says little about, for example, the shooting experience and imaging performance of the E-300 and the K-3 III in practical situations. User reviews that are available, for instance, at amazon can sometimes shed light on these issues, but such feedback is all too often partial, inconsistent, and inaccurate.
Expert reviews
This is where reviews by experts come in. The following table reports the overall ratings of the cameras as published by some of the major camera review sites (amateurphotographer [AP], cameralabs [CL], digitalcameraworld [DCW], dpreview [DPR], ephotozine [EPZ], photographyblog [PB]). As can be seen, the professional reviewers agree in many cases on the quality of different cameras, but sometimes their assessments diverge, reinforcing the earlier point that a camera decision is often a very personal choice.
# | Camera Model |
AP score |
CL score |
DCW score |
DPR score |
EPZ score |
PB score |
Camera Launch |
Launch Price (USD) |
Street Price |
|
---|---|---|---|---|---|---|---|---|---|---|---|
1. | Olympus E-300 | .. | .. | .. | + | o | 4.5/5 | Sep 2004 | 799 | ebay.com | |
2. | Pentax K-3 III | 4/5 | .. | 3/5 | .. | 4.5/5 | .. | Mar 2021 | 1,999 | amazon.com | |
3. | Canon XT | .. | 80/100 | .. | + + | o | .. | Feb 2005 | 899 | ebay.com | |
4. | Fujifilm X-H1 | .. | + | 5/5 | 86/100 | 4.5/5 | 4.5/5 | Feb 2018 | 1,899 | ebay.com | |
5. | Leica Digilux 3 | .. | .. | .. | .. | .. | .. | Sep 2006 | 1,499 | ebay.com | |
6. | Olympus E-620 | 3/5 | 88/100 | .. | 72/100 | 4.5/5 | 5/5 | Feb 2009 | 699 | ebay.com | |
7. | Olympus E-520 | .. | 87/100 | .. | + + | 4.5/5 | 4.5/5 | May 2008 | 699 | ebay.com | |
8. | Olympus E-410 | .. | 86/100 | .. | + + | 4/5 | 4.5/5 | Mar 2007 | 699 | ebay.com | |
9. | Olympus E-510 | .. | 89/100 | .. | + + | 3.5/5 | 4.5/5 | Mar 2007 | 799 | ebay.com | |
10. | Olympus E-330 | .. | .. | .. | + | o | .. | Jan 2006 | 999 | ebay.com | |
11. | Olympus E-400 | .. | 85/100 | .. | .. | 4/5 | 4/5 | Sep 2006 | 699 | ebay.com | |
12. | Olympus E-500 | .. | 76/100 | .. | + + | .. | .. | Sep 2005 | 599 | ebay.com | |
13. | Olympus E-1 | .. | .. | .. | + | o | .. | Jun 2003 | 1,699 | ebay.com | |
14. | Pentax KP | 4/5 | .. | 3/5 | 82/100 | 5/5 | 4.5/5 | Jan 2017 | 1,099 | ebay.com | |
15. | Pentax K-70 | 4.5/5 | .. | 4/5 | 79/100 | 4.5/5 | 4.5/5 | Jun 2016 | 649 | ebay.com | |
16. | Pentax K-3 II | 4.5/5 | .. | .. | .. | 5/5 | 5/5 | Apr 2015 | 1,099 | ebay.com | |
17. | Pentax K-3 | 4/5 | .. | .. | 83/100 | 5/5 | 5/5 | Oct 2013 | 1,299 | ebay.com | |
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available. |
Care should be taken when interpreting the review scores above, though. The assessments were made in relation to similar cameras of the same technological generation. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and comparisons of ratings among very different cameras or across long time periods have little meaning. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.
Other camera comparisons
Did this review help to inform your camera decision process? In case you would like to check on the differences and similarities of other camera models, just make your choice using the following search menu. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.
- Canon 6D Mark II vs Olympus E-300
- Canon M6 Mark II vs Pentax K-3 III
- Canon SX70 vs Pentax K-3 III
- Canon T6i vs Pentax K-3 III
- Canon XTi vs Olympus E-300
- Fujifilm X-A7 vs Pentax K-3 III
- Fujifilm X-H1 vs Olympus E-300
- Fujifilm X-Pro2 vs Olympus E-300
- Fujifilm XP140 vs Olympus E-300
- Leica Q3 vs Pentax K-3 III
- Nikon D700 vs Pentax K-3 III
- Nikon P7800 vs Olympus E-300
Specifications: Olympus E-300 vs Pentax K-3 III
Below is a side-by-side comparison of the specs of the two cameras to facilitate a quick review of their differences and common features.
Camera Model | Olympus E-300 | Pentax K-3 III |
---|---|---|
Camera Type | Digital single lens reflex | Digital single lens reflex |
Camera Lens | Four Thirds lenses | Pentax K mount lenses |
Launch Date | September 2004 | March 2021 |
Launch Price | USD 799 | USD 1,999 |
Sensor Specs | Olympus E-300 | Pentax K-3 III |
Sensor Technology | CCD | CMOS |
Sensor Format | Four Thirds Sensor | APS-C Sensor |
Sensor Size | 17.3 x 13.0 mm | 23.3 x 15.5 mm |
Sensor Area | 224.9 mm2 | 361.15 mm2 |
Sensor Diagonal | 21.6 mm | 28 mm |
Crop Factor | 2.0x | 1.5x |
Sensor Resolution | 8 Megapixels | 25.6 Megapixels |
Image Resolution | 3264 x 2448 pixels | 6192 x 4128 pixels |
Pixel Pitch | 5.30 μm | 3.76 μm |
Pixel Density | 3.55 MP/cm2 | 7.08 MP/cm2 |
Moiré control | Anti-Alias filter | no AA filter |
Movie Capability | no Video | 4K/30p Video |
ISO Setting | 100 - 400 ISO | 100 - 160,000 ISO |
ISO Boost | 100 - 1,600 ISO | no Enhancement |
Image Processor | TruePic | PRIME V |
Screen Specs | Olympus E-300 | Pentax K-3 III |
Viewfinder Type | Optical viewfinder | Optical viewfinder |
Viewfinder Field of View | 95% | 100% |
Viewfinder Magnification | 0.5x | 0.70x |
Top-Level Screen | no Top Display | Control Panel |
LCD Framing | Live View | |
Rear LCD Size | 1.8inch | 3.2inch |
LCD Resolution | 134k dots | 1620k dots |
LCD Attachment | Fixed screen | Fixed screen |
Touch Input | no Touchscreen | Touchscreen |
Shooting Specs | Olympus E-300 | Pentax K-3 III |
Focus System | Phase-detect AF | Phase-detect AF |
Manual Focusing Aid | no Peaking Feature | Focus Peaking |
Max Shutter Speed (mechanical) | 1/4000s | 1/8000s |
Continuous Shooting | 2.5 shutter flaps/s | 12 shutter flaps/s |
Time-Lapse Photography | no Intervalometer | Intervalometer built-in |
Image Stabilization | Lens stabilization only | In-body stabilization |
Fill Flash | Built-in Flash | no On-Board Flash |
Storage Medium | CF or XD cards | SDXC cards |
Single or Dual Card Slots | Dual card slots | Dual card slots |
Connectivity Specs | Olympus E-300 | Pentax K-3 III |
External Flash | Hotshoe | Hotshoe |
Studio Flash | no PC Sync | PC Sync socket |
USB Connector | USB 2.0 | USB 3.2 |
HDMI Port | no HDMI | micro HDMI |
Microphone Port | no MIC socket | External MIC port |
Headphone Socket | no Headphone port | Headphone port |
Wifi Support | no Wifi | Wifi built-in |
Bluetooth Support | no Bluetooth | Bluetooth built-in |
Geotagging | no internal GPS | GPS built-in |
Body Specs | Olympus E-300 | Pentax K-3 III |
Environmental Sealing | not weather sealed | Weathersealed body |
Battery Type | Olympus BLM-1 | Pentax D-LI90 |
Battery Life (CIPA) | 750 shots per charge | 800 shots per charge |
Body Dimensions |
147 x 85 x 64 mm (5.8 x 3.3 x 2.5 in) |
135 x 104 x 74 mm (5.3 x 4.1 x 2.9 in) |
Camera Weight | 624 g (22.0 oz) | 820 g (28.9 oz) |
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