Olympus E-1 vs Pentax 645D
The Olympus E-1 and the Pentax 645D are two professional cameras that were revealed to the public, respectively, in June 2003 and March 2010. Both are DSLR (Digital Single Lens Reflex) cameras that are based on a Four Thirds (E-1) and a medium format (645D) sensor. The Olympus has a resolution of 4.9 megapixels, whereas the Pentax provides 39.5 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 E-1 and the Pentax 645D? 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
An illustration of the physical size and weight of the Olympus E-1 and the Pentax 645D is provided in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive perspectives from the front, the top, and the back are available. All width, height and depth measures are rounded to the nearest millimeter.
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Pentax 645D is notably larger (24 percent) than the Olympus E-1. Moreover, the 645D is substantially heavier (101 percent) than the E-1. In this context, it is worth noting that both cameras are splash and dust-proof and can, hence, be used in inclement weather conditions or harsh environments.
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-1 gets 750 shots out of its Olympus BLM-1 battery, while the 645D 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-1 | 141 mm | 104 mm | 81 mm | 738 g | 750 | Y | Jun 2003 | 1,699 | ebay.com | |
2. | Pentax 645D | 156 mm | 117 mm | 119 mm | 1480 g | 800 | Y | Mar 2010 | 9,995 | ebay.com | |
3. | Canon 1D Mark IV | 156 mm | 157 mm | 80 mm | 1230 g | 1500 | Y | Oct 2009 | 4,999 | ebay.com | |
4. | Canon 1D X | 158 mm | 168 mm | 83 mm | 1551 g | 1120 | Y | Oct 2011 | 6,799 | ebay.com | |
5. | Canon 6D Mark II | 144 mm | 111 mm | 75 mm | 765 g | 1200 | Y | Jun 2017 | 1,999 | amazon.com | |
6. | Canon 7D | 148 mm | 111 mm | 74 mm | 860 g | 800 | Y | Sep 2009 | 1,699 | ebay.com | |
7. | Leica Digilux 3 | 146 mm | 87 mm | 77 mm | 606 g | 750 | n | Sep 2006 | 1,499 | ebay.com | |
8. | Leica S Typ 006 | 160 mm | 120 mm | 80 mm | 1260 g | .. | Y | Sep 2012 | 21,950 | ebay.com | |
9. | Nikon D3S | 160 mm | 157 mm | 88 mm | 1240 g | 4200 | Y | Oct 2009 | 5,199 | ebay.com | |
10. | Nikon D500 | 147 mm | 115 mm | 81 mm | 860 g | 1240 | Y | Jan 2016 | 1,999 | ebay.com | |
11. | Nikon D610 | 141 mm | 113 mm | 82 mm | 850 g | 900 | Y | Oct 2013 | 1,999 | ebay.com | |
12. | Nikon D7000 | 132 mm | 105 mm | 77 mm | 780 g | 1050 | Y | Sep 2010 | 1,499 | ebay.com | |
13. | Olympus E-3 | 142 mm | 116 mm | 75 mm | 876 g | 750 | Y | Oct 2007 | 1,699 | ebay.com | |
14. | Olympus E-5 | 142 mm | 117 mm | 75 mm | 873 g | 750 | Y | Sep 2010 | 1,699 | ebay.com | |
15. | Olympus E-300 | 147 mm | 85 mm | 64 mm | 624 g | 750 | n | Sep 2004 | 799 | ebay.com | |
16. | Olympus E-330 | 140 mm | 87 mm | 72 mm | 637 g | 750 | n | Jan 2006 | 999 | ebay.com | |
17. | Pentax 645Z | 156 mm | 117 mm | 123 mm | 1550 g | 650 | Y | Apr 2014 | 8,499 | ebay.com | |
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders. | |||||||||||
The price is, of course, an important factor in any camera decision. 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-1 was launched at a markedly lower price (by 83 percent) than the 645D, which puts it into a different market segment. Usually, retail prices stay at first close to the launch price, but after several months, discounts become available. 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. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.
Sensor comparison
The size of the sensor inside a digital camera is one of the key determinants of image quality. All other things equal, a large sensor will have larger individual pixel-units that offer better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixels in a sensor of the same technological generation. Moreover, a large sensor camera will give the photographer more control over depth-of-field in the image and, thus, the ability to better isolate a subject from the background. On the downside, larger sensors tend to be more expensive and lead to bigger and heavier cameras and lenses.
Of the two cameras under consideration, the Olympus E-1 features a Four Thirds sensor and the Pentax 645D a medium format sensor. The sensor area in the 645D is 545 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 2.0 and 0.79. Both cameras feature a native aspect ratio (sensor width to sensor height) of 4:3.
With 39.5MP, the 645D offers a higher resolution than the E-1 (4.9MP), but the 645D has smaller individual pixels (pixel pitch of 6.06μm versus 6.78μm for the E-1). Yet, the 645D is a much more recent model (by 6 years and 8 months) than the E-1, 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 645D has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The resolution advantage of the Pentax 645D implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the 645D for good quality output (200 dots per inch) amounts to 36.3 x 27.2 inches or 92.3 x 69.1 cm, for very good quality (250 dpi) 29.1 x 21.8 inches or 73.8 x 55.3 cm, and for excellent quality (300 dpi) 24.2 x 18.1 inches or 61.5 x 46.1 cm. The corresponding values for the Olympus E-1 are 12.8 x 9.6 inches or 32.5 x 24.4 cm for good quality, 10.2 x 7.7 inches or 26 x 19.5 cm for very good quality, and 8.5 x 6.4 inches or 21.7 x 16.3 cm for excellent quality prints.
The Olympus E-1 has a native sensitivity range from ISO 100 to ISO 800, which can be extended to ISO 100-3200. The corresponding ISO settings for the Pentax 645D are ISO 100 to ISO 1600 (no boost).
Technology-wise, both cameras are equipped with CCD (Charged Coupled Device) sensors. 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-1 | Four Thirds | 4.9 | 2560 | 1920 | none | 20.0 | 9.7 | -145 | 44 | |
2. | Pentax 645D | Medium Format | 39.5 | 7264 | 5440 | none | 24.6 | 12.6 | 1262 | 82 | |
3. | Canon 1D Mark IV | APS-H | 16.0 | 4896 | 3264 | 1080/30p | 22.8 | 12.0 | 1320 | 74 | |
4. | Canon 1D X | Full Frame | 17.9 | 5184 | 3456 | 1080/30p | 23.8 | 11.8 | 2786 | 82 | |
5. | Canon 6D Mark II | Full Frame | 26.0 | 6240 | 4160 | 1080/60p | 24.4 | 11.9 | 2862 | 85 | |
6. | Canon 7D | APS-C | 17.9 | 5184 | 3456 | 1080/30p | 22.0 | 11.7 | 854 | 66 | |
7. | Leica Digilux 3 | Four Thirds | 7.4 | 3136 | 2352 | none | 21.0 | 10.6 | 127 | 53 | |
8. | Leica S Typ 006 | Medium Format | 37.5 | 7500 | 5000 | none | 23.9 | 12.2 | 824 | 76 | |
9. | Nikon D3S | Full Frame | 12.1 | 4256 | 2832 | 720/24p | 23.5 | 12.0 | 3253 | 82 | |
10. | Nikon D500 | APS-C | 20.7 | 5568 | 3712 | 4K/30p | 24.0 | 14.0 | 1324 | 83 | |
11. | Nikon D610 | Full Frame | 24.2 | 6016 | 4016 | 1080/30p | 25.1 | 14.4 | 2925 | 94 | |
12. | Nikon D7000 | APS-C | 16.1 | 4928 | 3264 | 1080/24p | 23.5 | 13.9 | 1167 | 80 | |
13. | Olympus E-3 | Four Thirds | 10.0 | 3648 | 2736 | none | 21.6 | 10.5 | 571 | 56 | |
14. | Olympus E-5 | Four Thirds | 12.2 | 4032 | 3024 | 720/30p | 21.6 | 10.5 | 519 | 56 | |
15. | Olympus E-300 | Four Thirds | 8.0 | 3264 | 2448 | none | 20.4 | 10.1 | -40 | 48 | |
16. | Olympus E-330 | Four Thirds | 7.4 | 3136 | 2352 | none | 20.8 | 10.4 | 73 | 52 | |
17. | Pentax 645Z | Medium Format | 51.1 | 8256 | 6192 | 1080/60i | 26.0 | 14.7 | 4505 | 101 | |
Note: DXO values in italics represent estimates based on sensor size and age. |
Feature comparison
Beyond body and sensor, cameras can and do differ across a range of features. The E-1 and the 645D 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 E-1 offers a wider field of view (100%) than the one in the 645D (98%), so that a larger proportion of the captured image is visible in the finder. On the other hand, the viewfinder of the 645D has a higher magnification (0.78x vs 0.48x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The table below summarizes some of the other core capabilities of the Olympus E-1 and Pentax 645D in connection with corresponding information for a sample of similar cameras.
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-1 | optical | Y | 1.8 / 134 | fixed | n | 1/4000s | 3.0/s | n | n | |
2. | Pentax 645D | optical | Y | 3.0 / 921 | fixed | n | 1/4000s | 1.1/s | n | n | |
3. | Canon 1D Mark IV | optical | Y | 3.0 / 920 | fixed | n | 1/8000s | 10.0/s | n | n | |
4. | Canon 1D X | optical | Y | 3.2 / 1040 | fixed | n | 1/8000s | 14.0/s | n | n | |
5. | Canon 6D Mark II | optical | Y | 3.0 / 1040 | swivel | Y | 1/4000s | 6.5/s | n | n | |
6. | Canon 7D | optical | Y | 3.0 / 920 | fixed | n | 1/8000s | 8.0/s | Y | n | |
7. | Leica Digilux 3 | optical | n | 2.5 / 207 | fixed | n | 1/4000s | 3.0/s | Y | n | |
8. | Leica S Typ 006 | optical | Y | 3.0 / 922 | fixed | n | 1/4000s | 1.5/s | n | n | |
9. | Nikon D3S | optical | Y | 3.0 / 921 | fixed | n | 1/8000s | 11.0/s | n | n | |
10. | Nikon D500 | optical | Y | 3.2 / 2359 | tilting | Y | 1/8000s | 10.0/s | n | n | |
11. | Nikon D610 | optical | Y | 3.2 / 921 | fixed | n | 1/4000s | 6.0/s | Y | n | |
12. | Nikon D7000 | optical | Y | 3.0 / 921 | fixed | n | 1/8000s | 6.0/s | Y | n | |
13. | Olympus E-3 | optical | Y | 2.5 / 230 | swivel | n | 1/8000s | 5.0/s | Y | Y | |
14. | Olympus E-5 | optical | Y | 3.0 / 920 | swivel | n | 1/8000s | 5.0/s | Y | Y | |
15. | Olympus E-300 | optical | n | 1.8 / 134 | fixed | n | 1/4000s | 2.5/s | Y | n | |
16. | Olympus E-330 | optical | n | 2.5 / 215 | tilting | n | 1/4000s | 3.0/s | Y | n | |
17. | Pentax 645Z | optical | Y | 3.2 / 1037 | tilting | n | 1/4000s | 3.0/s | n | n | |
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one. |
The Pentax 645D 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-1 writes its imaging data to Compact Flash or xD Picture cards, while the 645D 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 E-1 and Pentax 645D 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-1 | Y | - / - | - | - | - | 2.0 | - | - | - | |
2. | Pentax 645D | Y | stereo / - | - | - | - | 2.0 | - | - | - | |
3. | Canon 1D Mark IV | Y | stereo / - | Y | - | mini | 2.0 | - | - | - | |
4. | Canon 1D X | Y | mono / - | Y | - | mini | 2.0 | - | - | - | |
5. | Canon 6D Mark II | Y | stereo / mono | Y | - | mini | 2.0 | Y | Y | Y | |
6. | Canon 7D | Y | mono / - | Y | - | mini | 2.0 | - | - | - | |
7. | Leica Digilux 3 | Y | stereo / mono | - | - | - | 2.0 | - | - | - | |
8. | Leica S Typ 006 | Y | - / - | - | - | mini | 2.0 | - | - | - | |
9. | Nikon D3S | Y | stereo / - | - | - | mini | 2.0 | - | - | - | |
10. | Nikon D500 | Y | stereo / mono | Y | Y | mini | 3.0 | Y | Y | Y | |
11. | Nikon D610 | Y | mono / mono | Y | Y | mini | 2.0 | - | - | - | |
12. | Nikon D7000 | Y | mono / mono | Y | - | mini | 2.0 | - | - | - | |
13. | Olympus E-3 | Y | - / - | - | - | - | 2.0 | - | - | - | |
14. | Olympus E-5 | Y | stereo / - | - | - | mini | 2.0 | - | - | - | |
15. | Olympus E-300 | Y | - / - | - | - | - | 2.0 | - | - | - | |
16. | Olympus E-330 | Y | - / - | - | - | - | 2.0 | - | - | - | |
17. | Pentax 645Z | Y | stereo / mono | Y | - | mini | 3.0 | - | - | - |
Both cameras feature a PC Sync terminal to control professional strobe lights, which will be appreciated by studio photographers.
Both the E-1 and the 645D have been discontinued, but can regularly be found used on ebay. The E-1 was replaced by the Olympus E-3, while the 645D was followed by the Pentax 645Z. Further information on the features and operation of the E-1 and 645D can be found, respectively, in the Olympus E-1 Manual (free pdf) or the online Pentax 645D Manual.
Review summary
So what is the bottom line? Is there a clear favorite between the Olympus E-1 and the Pentax 645D? Which camera is better? The listing below highlights the relative strengths of the two models.
Reasons to prefer the Olympus E-1:
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- More complete view: Has a viewfinder with a larger field of view (100% vs 98%).
- Faster burst: Shoots at higher frequency (3 vs 1.1 flaps/sec) to capture the decisive moment.
- More compact: Is smaller (141x104mm vs 156x117mm) and thus needs less room in the bag.
- Less heavy: Is lighter (by 742g or 50 percent) and hence easier to carry around.
- More affordable: Was introduced into a lower priced category (83 percent cheaper at launch).
- More heavily discounted: Has been available for much longer (launched in June 2003).
Advantages of the Pentax 645D:
- More detail: Has more megapixels (39.5 vs 4.9MP), which boosts linear resolution by 184%.
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- 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.
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.78x vs 0.48x).
- Larger screen: Has a bigger rear LCD (3.0" vs 1.8") for image review and settings control.
- More detailed LCD: Has a higher resolution rear screen (921k vs 134k dots).
- Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
- More modern: Reflects 6 years and 8 months of technical progress since the E-1 launch.
If the number of relative strengths (bullet points above) is taken as a guide, the 645D is the clear winner of the contest (11 : 7 points). However, the pertinence of the various camera strengths will differ across photographers, so that you might want to weigh individual camera traits according to their importance for your own imaging needs before making a camera decision. A professional wedding photographer will view the differences between cameras in a way that diverges from the perspective of a travel photog, and a person interested in cityscapes has distinct needs from a macro 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-1 and the Pentax 645D 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 comparison of technical specifications can provide a useful overview of the capabilities of different cameras, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the E-1 or the 645D. 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 why hands-on reviews by experts are important. The adjacent summary-table relays the overall verdicts of several of the most popular 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-1 | .. | .. | .. | + | o | .. | Jun 2003 | 1,699 | ebay.com | |
2. | Pentax 645D | 5/5 | .. | .. | .. | .. | .. | Mar 2010 | 9,995 | ebay.com | |
3. | Canon 1D Mark IV | 5/5 | .. | .. | 89/100 | .. | .. | Oct 2009 | 4,999 | ebay.com | |
4. | Canon 1D X | 5/5 | .. | .. | .. | 4.5/5 | 4.5/5 | Oct 2011 | 6,799 | ebay.com | |
5. | Canon 6D Mark II | 4/5 | + | 4/5 | 80/100 | 4.5/5 | 4/5 | Jun 2017 | 1,999 | amazon.com | |
6. | Canon 7D | 5/5 | + + | .. | 84/100 | 4.5/5 | 4.5/5 | Sep 2009 | 1,699 | ebay.com | |
7. | Leica Digilux 3 | .. | .. | .. | .. | .. | .. | Sep 2006 | 1,499 | ebay.com | |
8. | Leica S Typ 006 | .. | .. | .. | .. | .. | .. | Sep 2012 | 21,950 | ebay.com | |
9. | Nikon D3S | 5/5 | .. | .. | 89/100 | 4.5/5 | 5/5 | Oct 2009 | 5,199 | ebay.com | |
10. | Nikon D500 | 5/5 | + + | 4.7/5 | 91/100 | 4.5/5 | 5/5 | Jan 2016 | 1,999 | ebay.com | |
11. | Nikon D610 | 4/5 | + + | .. | 87/100 | 4.5/5 | 4.5/5 | Oct 2013 | 1,999 | ebay.com | |
12. | Nikon D7000 | 4/5 | .. | .. | 80/100 | 4.5/5 | 4.5/5 | Sep 2010 | 1,499 | ebay.com | |
13. | Olympus E-3 | .. | 88/100 | .. | + + | o | 4/5 | Oct 2007 | 1,699 | ebay.com | |
14. | Olympus E-5 | 4/5 | .. | .. | 75/100 | 4/5 | 4.5/5 | Sep 2010 | 1,699 | ebay.com | |
15. | Olympus E-300 | .. | .. | .. | + | o | 4.5/5 | Sep 2004 | 799 | ebay.com | |
16. | Olympus E-330 | .. | .. | .. | + | o | .. | Jan 2006 | 999 | ebay.com | |
17. | Pentax 645Z | 5/5 | .. | 3.5/5 | .. | 4.5/5 | 5/5 | Apr 2014 | 8,499 | ebay.com | |
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available. |
The above review scores should be interpreted with care, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. Hence, a score should always be seen in the context of the camera's market launch date and its price, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. 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 use the search menu below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.
- Canon 650D vs Pentax 645D
- Canon 800D vs Olympus E-1
- Canon M3 vs Pentax 645D
- Canon T7 vs Olympus E-1
- Fujifilm X-A3 vs Olympus E-1
- Nikon D1 vs Olympus E-1
- Olympus E-1 vs Panasonic GX7
- Olympus E-1 vs Ricoh GR II
- Olympus E-PL3 vs Pentax 645D
- Panasonic G5 vs Pentax 645D
- Pentax 645D vs Pentax K-5 II
- Pentax 645D vs Sony A7R III
Specifications: Olympus E-1 vs Pentax 645D
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-1 | Pentax 645D |
---|---|---|
Camera Type | Digital single lens reflex | Digital single lens reflex |
Camera Lens | Four Thirds lenses | Pentax 645 mount lenses |
Launch Date | June 2003 | March 2010 |
Launch Price | USD 1,699 | USD 9,995 |
Sensor Specs | Olympus E-1 | Pentax 645D |
Sensor Technology | CCD | CCD |
Sensor Format | Four Thirds Sensor | Medium Format Sensor |
Sensor Size | 17.3 x 13.0 mm | 44.0 x 33.0 mm |
Sensor Area | 224.9 mm2 | 1452 mm2 |
Sensor Diagonal | 21.6 mm | 55 mm |
Crop Factor | 2.0x | 0.79x |
Sensor Resolution | 4.9 Megapixels | 39.5 Megapixels |
Image Resolution | 2560 x 1920 pixels | 7264 x 5440 pixels |
Pixel Pitch | 6.78 μm | 6.06 μm |
Pixel Density | 2.19 MP/cm2 | 2.72 MP/cm2 |
Moiré control | Anti-Alias filter | no AA filter |
Movie Capability | no Video | no Video |
ISO Setting | 100 - 800 ISO | 100 - 1,600 ISO |
ISO Boost | 100 - 3,200 ISO | no Enhancement |
Image Processor | TruePic | PRIME II |
DXO Sensor Quality (score) | .. | 82 |
DXO Color Depth (bits) | .. | 24.6 |
DXO Dynamic Range (EV) | .. | 12.6 |
DXO Low Light (ISO) | .. | 1262 |
Screen Specs | Olympus E-1 | Pentax 645D |
Viewfinder Type | Optical viewfinder | Optical viewfinder |
Viewfinder Field of View | 100% | 98% |
Viewfinder Magnification | 0.48x | 0.78x |
Top-Level Screen | Control Panel | Control Panel |
Rear LCD Size | 1.8inch | 3.0inch |
LCD Resolution | 134k dots | 921k dots |
LCD Attachment | Fixed screen | Fixed screen |
Shooting Specs | Olympus E-1 | Pentax 645D |
Focus System | Phase-detect AF | Phase-detect AF |
Continuous Shooting | 3 shutter flaps/s | 1.1 shutter flaps/s |
Shutter Life Expectancy | 150 000 actuations | 50 000 actuations |
Time-Lapse Photography | no Intervalometer | Intervalometer built-in |
Fill Flash | no On-Board 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-1 | Pentax 645D |
External Flash | Hotshoe | Hotshoe |
Studio Flash | PC Sync socket | PC Sync socket |
USB Connector | USB 2.0 | USB 2.0 |
HDMI Port | no HDMI | no HDMI |
Wifi Support | no Wifi | no Wifi |
Body Specs | Olympus E-1 | Pentax 645D |
Environmental Sealing | Weathersealed body | Weathersealed body |
Battery Type | Olympus BLM-1 | Pentax D-LI90 |
Battery Life (CIPA) | 750 shots per charge | 800 shots per charge |
Body Dimensions |
141 x 104 x 81 mm (5.6 x 4.1 x 3.2 in) |
156 x 117 x 119 mm (6.1 x 4.6 x 4.7 in) |
Camera Weight | 738 g (26.0 oz) | 1480 g (52.2 oz) |
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