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Canon 1D Mark III vs Olympus E-P1

The Canon EOS-1D Mark III and the Olympus PEN E-P1 are two digital cameras that were announced, respectively, in February 2007 and June 2009. The 1D Mark III is a DSLR, while the E-P1 is a mirrorless interchangeable lens camera. The cameras are based on an APS-H (1D Mark III) and a Four Thirds (E-P1) sensor. The Canon has a resolution of 10.1 megapixels, whereas the Olympus provides 12.2 MP.

Below is an overview of the main specs of the two cameras as a starting point for the comparison.

Headline Specifications
Canon 1D Mark III   Olympus E-P1
Canon 1D Mark III Olympus E-P1
Digital single lens reflex Mirrorless system camera
Canon EF mount lenses Micro Four Thirds lenses
10.1 MP, APS-H Sensor 12.2 MP, Four Thirds Sensor
no Video 720/30p Video
ISO 100-3200 (50-6400) ISO 100-6400
Optical viewfinder No viewfinder, LCD framing
3.0" LCD, 230k dots 3.0" LCD, 230k dots
Fixed screen (not touch-sensitive) Fixed screen (not touch-sensitive)
10 shutter flaps per second 3 shutter flaps per second
Lens stabilization onlyIn-body stabilization
Weathersealed bodyNot weather sealed
2200 shots per battery charge300 shots per battery charge
156 x 157 x 80 mm, 1155 g 121 x 70 x 36 mm, 355 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS-1D Mark III and the Olympus PEN E-P1? 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 Canon 1D Mark III and the Olympus E-P1. 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.

The E-P1 can be obtained in three different colors (black, silver, white), while the 1D Mark III is only available in black.

Size Canon 1D Mark III vs Olympus E-P1
Compare 1D Mark III versus E-P1 top
Comparison 1D Mark III or E-P1 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Olympus E-P1 is considerably smaller (65 percent) than the Canon 1D Mark III. Moreover, the E-P1 is substantially lighter (69 percent) than the 1D Mark III. It is worth mentioning in this context that the 1D Mark III is splash and dust resistant, while the E-P1 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. A larger imaging sensor will tend to go along with bigger and heavier lenses, although exceptions exist. You can compare the optics available for the two cameras in the Canon EF Lens Catalog (1D Mark III) and the Micro Four Thirds Lens Catalog (E-P1). Mirrorless cameras, such as the E-P1, have moreover the advantage that they can use many lenses from other systems via adapters, as they have a relatively short flange to focal plane distance.

Concerning battery life, the 1D Mark III gets 2200 shots out of its LP-E4 battery, while the E-P1 can take 300 images on a single charge of its BLS-1 power pack. As can be seen in the images above, the 1D Mark III has a battery grip built in. This facilitates image-taking in portrait orientation and gives it additional battery power.

The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. In case you want to display and compare another camera duo, just click on the right or left arrow next to the camera that you would like to inspect. Alternatively, you can also use the CAM-parator to select your camera combination among a larger number of options.

Camera Body Specifications
  Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
(CIPA)
Weather
Sealing
(yes/no)
Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Camera
Model
 
Canon 1D Mark III» 6.1 in 6.2 in 3.1 in 40.7 oz 2200 Y Feb 2007 4,499- i Canon 1D Mark III
 
Olympus E-P1« 4.8 in 2.8 in 1.4 in 12.5 oz 300 n Jun 2009 799- i Olympus E-P1
 
Canon 5DS R« » 6.0 in 4.6 in 3.0 in 32.8 oz 700 Y Feb 2015 3,699 i i Canon 5DS R
 
Canon 5D Mark III« » 6.0 in 4.6 in 3.0 in 33.5 oz 950 Y Mar 2012 3,499- i Canon 5D Mark III
 
Canon 1D Mark IV« » 6.1 in 6.2 in 3.1 in 43.4 oz 1500 Y Oct 2009 4,999- i Canon 1D Mark IV
 
Canon 5D Mark II« » 6.0 in 4.5 in 3.0 in 30.0 oz 850 Y Sep 2008 3,499- i Canon 5D Mark II
 
Canon 1Ds Mark III« » 5.9 in 6.3 in 3.1 in 48.9 oz 1800 Y Aug 2007 7,999- i Canon 1Ds Mark III
 
Canon 1D Mark II N« » 6.1 in 6.2 in 3.1 in 55.2 oz 1200 Y Aug 2005 3,999- i Canon 1D Mark II N
 
Canon 1D Mark II« » 6.1 in 6.2 in 3.1 in 54.1 oz 1200 Y Jan 2004 4,499- i Canon 1D Mark II
 
Canon 1Ds« » 6.1 in 6.2 in 3.1 in 44.6 oz 600 Y Sep 2002 8,999- i Canon 1Ds
 
Nikon D3« » 6.3 in 6.2 in 3.5 in 45.9 oz 4300 Y Aug 2007 4,999- i Nikon D3
 
Nikon D2Xs« » 6.2 in 5.9 in 3.4 in 44.2 oz 3800 Y Jun 2006 4,699- i Nikon D2Xs
 
Olympus E-P3« » 4.8 in 2.7 in 1.3 in 13.0 oz 330 n Jun 2011 799- i Olympus E-P3
 
Olympus E-PL2« » 4.5 in 2.8 in 1.7 in 12.8 oz 280 n Jan 2011 599- i Olympus E-PL2
 
Olympus E-PL3« » 4.3 in 2.5 in 1.5 in 11.0 oz 300 n Jun 2011 599- i Olympus E-PL3
 
Olympus E-P2« » 4.8 in 2.8 in 1.4 in 12.5 oz 300 n Nov 2009 799- i Olympus E-P2
 
Panasonic GH1« » 4.9 in 3.5 in 1.8 in 13.6 oz 300 n Mar 2009 899- i Panasonic GH1
Note: Measurements and pricing do not include easily detachable parts, such as 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-P1 was launched at a markedly lower price (by 82 percent) than the 1D Mark 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. 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. Furthermore, a large sensor camera will give the photographer more possibilities to use shallow depth-of-field in order to 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 Canon 1D Mark III features an APS-H sensor and the Olympus E-P1 a Four Thirds sensor. The sensor area in the E-P1 is 57 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.3 and 2.0. The sensor in the 1D Mark III has a native 3:2 aspect ratio, while the one in the E-P1 offers a 4:3 aspect.

In terms of underlying technology, both cameras are build around CMOS sensors.

Canon 1D Mark III and Olympus E-P1 sensor measures

Despite having a smaller sensor, the E-P1 offers a higher resolution of 12.2 megapixels, compared with 10.1 MP of the 1D Mark III. This megapixels advantage comes at the cost of a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 4.29μm versus 7.21μm for the 1D Mark III). However, it should be noted that the E-P1 is much more recent (by 2 years and 3 months) than the 1D Mark III, and its sensor will have benefitted from technological advances during this time that make it possible to gather light more efficiently.

The resolution advantage of the Olympus E-P1 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the E-P1 for good quality output (200 dots per inch) amounts to 20.2 x 15.1 inch or 51.2 x 38.4 cm, for very good quality (250 dpi) 16.1 x 12.1 inch or 41 x 30.7 cm, and for excellent quality (300 dpi) 13.4 x 10.1 inch or 34.1 x 25.6 cm. The corresponding values for the Canon 1D Mark III are 19.4 x 13 inch or 49.4 x 32.9 cm for good quality, 15.6 x 10.4 inch or 39.5 x 26.3 cm for very good quality, and 13 x 8.6 inch or 32.9 x 21.9 cm for excellent quality prints.

The Canon EOS-1D Mark III has a native sensitivity range from ISO 100 to ISO 3200, which can be extended to ISO 50-6400. The corresponding ISO settings for the Olympus PEN E-P1 are ISO 100 to ISO 6400 (no boost).

1D Mark III versus E-P1 MP

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service assesses and scores the color depth ("DXO Portrait"), dynamic range ("DXO Landscape"), and low-light sensitivity ("DXO Sports") of camera sensors, and also publishes an overall camera score. Of the two cameras under review, the 1D Mark III provides substantially higher image quality than the E-P1, with an overall score that is 16 points higher. This advantage is based on 1.3 bits higher color depth, 1.3 EV in additional dynamic range, and 1 stops in additional low light sensitivity. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.

Sensor Characteristics
  Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Camera
Model
 
Canon 1D Mark III» APS-H 10.1 3888 2592-22.711.7107871Canon 1D Mark III
 
Olympus E-P1« Four Thirds 12.2 4032 3024720/30p21.410.453655Olympus E-P1
 
Canon 5DS R« » Full Frame 50.3 8688 57921080/30p24.612.4230886Canon 5DS R
 
Canon 5D Mark III« » Full Frame 22.1 5760 38401080/30p24.011.7229381Canon 5D Mark III
 
Canon 1D Mark IV« » APS-H 16.0 4896 32641080/30p22.812.0132074Canon 1D Mark IV
 
Canon 5D Mark II« » Full Frame 21.0 5616 37441080/30p23.711.9181579Canon 5D Mark II
 
Canon 1Ds Mark III« » Full Frame 21.0 5616 3744-24.012.0166380Canon 1Ds Mark III
 
Canon 1D Mark II N« » APS-H 8.2 3504 2336-22.311.297566Canon 1D Mark II N
 
Canon 1D Mark II« » APS-H 8.2 3504 2336-22.311.1100366Canon 1D Mark II
 
Canon 1Ds« » Full Frame 11.0 4064 2704-21.811.095463Canon 1Ds
 
Nikon D3« » Full Frame 12.1 4256 2832-23.512.2229081Nikon D3
 
Nikon D2Xs« » APS-C 12.2 4288 2848-22.210.948959Nikon D2Xs
 
Olympus E-P3« » Four Thirds 12.2 4032 30241080/60i20.810.153651Olympus E-P3
 
Olympus E-PL2« » Four Thirds 12.2 4032 3024720/30p21.410.257355Olympus E-PL2
 
Olympus E-PL3« » Four Thirds 12.2 4032 30241080/60i20.910.349952Olympus E-PL3
 
Olympus E-P2« » Four Thirds 12.2 4032 3024720/30p21.510.450556Olympus E-P2
 
Panasonic GH1« » Four Thirds 12.0 4000 30001080/24p21.611.677264Panasonic GH1

Many modern cameras are not only capable of taking still images, but also of capturing video footage. The E-P1 indeed provides for movie recording, while the 1D Mark III does not. The highest resolution format that the E-P1 can use is 720/30p.

 

Feature comparison

Apart from body and sensor, cameras can and do differ across a range of features. For example, the 1D Mark III has an optical viewfinder, which can be very useful when shooting in bright sunlight. In contrast, the E-P1 relies on live view and the rear LCD for framing. The following table reports on some other key feature differences and similarities of the Canon 1D Mark III, the Olympus E-P1, and comparable cameras.

Core Features
  Camera
Model
Viewfinder
(Type or
'000 dots)
Control
Panel
(yes/no)
LCD
Size
(inch)
LCD
Resolution
('000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Mech
Shutter
Speed
Shutter
Flaps
(1/sec)
Built-in
Flash
(yes/no)
Built-in
Image
Stab
Camera
Model
 
Canon 1D Mark III»optical Y 3.0 230 fixed n 1/8000s 10.0 n n Canon 1D Mark III
 
Olympus E-P1«- n 3.0 230 fixed n 1/4000s 3.0 n Y Olympus E-P1
 
Canon 5DS R« »optical Y 3.2 1040 fixed n 1/8000s 5.0 n n Canon 5DS R
 
Canon 5D Mark III« »optical Y 3.2 1040 fixed n 1/8000s 6.0 n n Canon 5D Mark III
 
Canon 1D Mark IV« »optical Y 3.0 920 fixed n 1/8000s 10.0 n n Canon 1D Mark IV
 
Canon 5D Mark II« »optical Y 3.0 920 fixed n 1/8000s 3.9 n n Canon 5D Mark II
 
Canon 1Ds Mark III« »optical Y 3.0 230 fixed n 1/8000s 5.0 n n Canon 1Ds Mark III
 
Canon 1D Mark II N« »optical Y 2.5 230 fixed n 1/8000s 8.5 n n Canon 1D Mark II N
 
Canon 1D Mark II« »optical Y 2.0 230 fixed n 1/8000s 8.3 n n Canon 1D Mark II
 
Canon 1Ds« »optical Y 2.0 120 fixed n 1/8000s 3.0 n n Canon 1Ds
 
Nikon D3« »optical Y 3.0 922 fixed n 1/8000s 11.0 n n Nikon D3
 
Nikon D2Xs« »optical Y 2.5 230 fixed n 1/8000s 5.0 n n Nikon D2Xs
 
Olympus E-P3« »- n 3.0 614 fixed Y 1/4000s 3.0 Y Y Olympus E-P3
 
Olympus E-PL2« »- n 3.0 460 fixed n 1/4000s 3.0 Y Y Olympus E-PL2
 
Olympus E-PL3« »- n 3.0 460 tilting n 1/4000s 5.5 n Y Olympus E-PL3
 
Olympus E-P2« »- n 3.0 230 fixed n 1/4000s 3.0 n Y Olympus E-P2
 
Panasonic GH1« »1440 n 3.0 460 swivel n 1/4000s 3.0 Y n Panasonic GH1

One feature that is present on the 1D Mark III, but is missing on the E-P1 is a top-level LCD. While being, of course, smaller than the rear screen, the control panel conveys some of the essential shooting information and can be convenient for quick and easy settings verification.

The 1D Mark III writes its imaging data to Compact Flash or SDHC cards, while the E-P1 uses SDHC cards. The 1D Mark III features dual card slots, which can be very useful in case a memory card fails. In contrast, the E-P1 only has one slot.

 

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 Canon EOS-1D Mark III and Olympus PEN E-P1 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

Input-Output Connections
  Camera
Model
Hotshoe
Port
Internal
Microphone
Internal
Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Type
WiFi
Support
NFC
Support
Bluetooth
Support
Camera
Model
 
Canon 1D Mark III»Y-----2.0---Canon 1D Mark III
 
Olympus E-P1«Ystereo---mini2.0---Olympus E-P1
 
Canon 5DS R« »YmonomonoY-mini3.0---Canon 5DS R
 
Canon 5D Mark III« »YmonomonoYYmini2.0---Canon 5D Mark III
 
Canon 1D Mark IV« »Ystereo-Y-mini2.0---Canon 1D Mark IV
 
Canon 5D Mark II« »YmonomonoY-mini2.0---Canon 5D Mark II
 
Canon 1Ds Mark III« »Y-----2.0---Canon 1Ds Mark III
 
Canon 1D Mark II N« »Y-----1.1---Canon 1D Mark II N
 
Canon 1D Mark II« »Y-----1.1---Canon 1D Mark II
 
Canon 1Ds« »Y-----FW---Canon 1Ds
 
Nikon D3« »Y----mini2.0---Nikon D3
 
Nikon D2Xs« »Y-----2.0---Nikon D2Xs
 
Olympus E-P3« »Ystereo---mini2.0---Olympus E-P3
 
Olympus E-PL2« »Ystereo---mini2.0---Olympus E-PL2
 
Olympus E-PL3« »Ystereo---mini2.0---Olympus E-PL3
 
Olympus E-P2« »Ystereo---mini2.0---Olympus E-P2
 
Panasonic GH1« »Ystereo-Y-mini2.0---Panasonic GH1

Studio photographers will appreciate that the Canon 1D Mark III (unlike the E-P1) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the 1D Mark III and the E-P1 have been discontinued, but can regularly be found used on eBay. The 1D Mark III was replaced by the Canon 1D Mark IV, while the E-P1 was followed by the Olympus E-P2. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Canon and Olympus websites.


Review summary

So how do things add up? Which of the two cameras – the Canon 1D Mark III or the Olympus E-P1 – has the upper hand? Is one clearly better than the other? The listing below highlights the relative strengths of the two models.

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Arguments in favor of the Canon EOS-1D Mark III:

  • Better image quality: Scores substantially higher (16 points) in the DXO overall assessment.
  • Richer colors: Generates images with noticeably better colors (1.3 bits more color depth).
  • More dynamic range: Captures a larger spectrum of light and dark details (1.3 EV of extra DR).
  • Better low-light sensitivity: Requires less light for good images (1 stops ISO advantage).
  • Easier framing: Has an optical viewfinder for image composition and settings control.
  • Easier setting verification: Features an LCD display on top to control shooting parameters.
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • Faster burst: Shoots at higher frequency (10 vs 3 flaps/sec) to capture the decisive moment.
  • More portrait friendly: Features an integrated vertical grip for easier portrait shooting.
  • Longer lasting: Can take more shots (2200 versus 300) on a single battery charge.
  • Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
  • Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
  • Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
  • More heavily discounted: Has been available for much longer (launched in February 2007).

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Reasons to prefer the Olympus PEN E-P1:

  • More detail: Has more megapixels (12.2 vs 10.1MP), which boosts linear resolution by 8%.
  • Broader imaging potential: Can capture not only stills but also 720/30p video.
  • More compact: Is smaller (121x70mm vs 156x157mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 800g or 69 percent) and is thus easier to take along.
  • Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
  • More legacy lens friendly: Can use many non-native lenses via adapters.
  • More affordable: Was introduced into a lower priced category (82 percent cheaper at launch).
  • More modern: Reflects 2 years and 3 months of technical progress since the 1D Mark III launch.

If the count of relative strengths (bullet points above) is taken as a measure, the 1D Mark III is the clear winner of the match-up (14 : 8 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.

1D Mark III 14:08 E-P1

How about other alternatives? Do the specifications of the Canon 1D Mark III and the Olympus E-P1 place the cameras among the top in their class? Find out in the latest Best DSLR Camera and Best Mirrorless Interchangeable Lens Camera listings whether the two cameras rank among the cream of the crop.

In any case, while the comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it remains incomplete and does no justice, for example, to the way the 1D Mark III or the E-P1 perform in practice. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased.

Expert reviews

This is why expert reviews are important. The following table reports the overall ratings of the cameras as published by some of the major camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, and photographyblog). 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.

Review Scores
  Camera
Model
cameralabs dpreview ephotozine imaging-resource photographyblog Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Camera
Model
 
Canon 1D Mark III»---o- Feb 2007 4,499- i Canon 1D Mark III
 
Olympus E-P1«+66/1004/54/54.5/5 Jun 2009 799- i Olympus E-P1
 
Canon 5DS R« »+83/1005/55/54.5/5 Feb 2015 3,699 i i Canon 5DS R
 
Canon 5D Mark III« »+ +82/1004.5/55/54.5/5 Mar 2012 3,499- i Canon 5D Mark III
 
Canon 1D Mark IV« »-89/100-5/5- Oct 2009 4,999- i Canon 1D Mark IV
 
Canon 5D Mark II« »91/10079/1004/55/5- Sep 2008 3,499- i Canon 5D Mark II
 
Canon 1Ds Mark III« »-+ +4.5/5-- Aug 2007 7,999- i Canon 1Ds Mark III
 
Canon 1D Mark II N« »----- Aug 2005 3,999- i Canon 1D Mark II N
 
Canon 1D Mark II« »-+ +-o- Jan 2004 4,499- i Canon 1D Mark II
 
Canon 1Ds« »-+ +--- Sep 2002 8,999- i Canon 1Ds
 
Nikon D3« »-+ +5/5o4.5/5 Aug 2007 4,999- i Nikon D3
 
Nikon D2Xs« »---o- Jun 2006 4,699- i Nikon D2Xs
 
Olympus E-P3« »83/10074/1004.5/54.5/54.5/5 Jun 2011 799- i Olympus E-P3
 
Olympus E-PL2« »83/10071/1004.5/54.5/54.5/5 Jan 2011 599- i Olympus E-PL2
 
Olympus E-PL3« »+ +72/1004.5/5-4/5 Jun 2011 599- i Olympus E-PL3
 
Olympus E-P2« »+69/1004/54.5/54.5/5 Nov 2009 799- i Olympus E-P2
 
Panasonic GH1« »+ +72/1004.5/55/54.5/5 Mar 2009 899- i Panasonic GH1
Notes: (+ +) 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. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. It should also be noted that some of the review sites have over time altered the way they render their verdicts.

Canon 1D Mark III:
Check Ebay offers
Olympus E-P1:
Check Ebay offers

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.

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    Specifications: Canon 1D Mark III vs Olympus E-P1

    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 Specifications
    Camera Model Canon 1D Mark III Olympus E-P1
    Camera Type Digital single lens reflex Mirrorless system camera
    Camera Lens Canon EF mount lenses Micro Four Thirds lenses
    Launch Date February 2007 June 2009
    Launch Price USD 4499 USD 799
    Sensor Specs Canon 1D Mark III Olympus E-P1
    Sensor Technology CMOS CMOS
    Sensor Format APS-H Sensor Four Thirds Sensor
    Sensor Size 28.1 x 18.7 mm 17.3 x 13.0 mm
    Sensor Area 525.47 mm2 224.9 mm2
    Sensor Diagonal 33.8 mm 21.6 mm
    Crop Factor 1.3x 2.0x
    Sensor Resolution 10.1 Megapixels 12.2 Megapixels
    Image Resolution 3888 x 2592 pixels 4032 x 3024 pixels
    Pixel Pitch 7.21 μm 4.29 μm
    Pixel Density 1.92 MP/cm2 5.42 MP/cm2
    Moiré control Anti-Alias filter Anti-Alias filter
    Movie Capability no Video 720/30p Video
    ISO Setting 100-3200 ISO 100-6400 ISO
    ISO Boost 50-6400 ISO no Enhancement
    Image Processor DIGIC III TruePic V
    DXO Sensor Quality (score) 71 55
    DXO Color Depth (bits) 22.7 21.4
    DXO Dynamic Range (EV) 11.7 10.4
    DXO Low Light (ISO) 1078 536
    Screen Specs Canon 1D Mark III Olympus E-P1
    Viewfinder Type Optical viewfinder No viewfinder
    Viewfinder Field of View 100%
    Viewfinder Magnification 0.58x
    Top-Level Screen Control Panel no Top Display
    LCD Framing Live View Live View
    Rear LCD Size 3.0 inch 3.0 inch
    LCD Resolution 230k dots 230k dots
    LCD Attachment Fixed screen Fixed screen
    Shooting Specs Canon 1D Mark III Olympus E-P1
    Autofocus System Phase-detect AF Contrast-detect AF
    Continuous Shooting 10 shutter flaps/s 3 shutter flaps/s
    Image StabilizationLens stabilization onlyIn-body stabilization
    Fill Flash no On-Board Flash no On-Board Flash
    Storage Medium CF or SDHC cards SDHC cards
    Second Storage Option Dual card slots Single card slot
    UHS card support no no
    Connectivity Specs Canon 1D Mark III Olympus E-P1
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket no PC Sync
    USB Connector USB 2.0 USB 2.0
    HDMI Port no HDMI mini HDMI
    Wifi Support no Wifi no Wifi
    Body Specs Canon 1D Mark III Olympus E-P1
    Environmental SealingWeathersealed bodyNot weather sealed
    Battery Type LP-E4 BLS-1
    Battery Life (CIPA)2200 shots per charge300 shots per charge
    Body Dimensions 156 x 157 x 80 mm
    (6.1 x 6.2 x 3.1 in)
    121 x 70 x 36 mm
    (4.8 x 2.8 x 1.4 in)
    Camera Weight 1155 g (40.7 oz) 355 g (12.5 oz)

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