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Canon 1D Mark III versus Canon 50D

The Canon EOS-1D Mark III and the Canon EOS 50D are two digital cameras that were announced, respectively, in February 2007 and August 2008. Both are DSLR (Digital Single Lens Reflex) cameras that are based on an APS-H (1D Mark III) and an APS-C (50D) sensor. The 1D Mark III has a resolution of 10.1 megapixel, whereas the 50D provides 15.1 MP. Read on to find out how these two cameras compare with respect to their size, their sensors, their features, and their reception by expert reviewers.

Body comparison: Canon 1D Mark III vs Canon 50D

The side-by-side display below illustrates the physical size and weight of the Canon 1D Mark III and the Canon 50D. Three successive views from the front, the top, and the rear are shown. All width, height and depth dimensions are rounded to the nearest millimeter. You can also use the toggle button to switch to a percentage comparison if you prefer that the measures are being expressed in relative terms (in this case, the camera on the left side – the 1D Mark III – represents the basis for the calculations across all the size and weight measures).

Compare Canon 1D Mark III vs Canon 50D
1D Mark III versus 50D top view
1D Mark III and 50D rear side

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Canon 50D is considerably smaller (35 percent) than the Canon 1D Mark III. Moreover, the 50D is markedly lighter (29 percent) than the 1D Mark III. 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. A larger imaging sensor (as in the 1D Mark III) will tend to go along with bigger and heavier lenses, while more compact options are available for the smaller-sensor camera (50D). You can find a comprehensive overview of suitable optics in the Canon EF Lens Catalog.

Concerning battery life, the 1D Mark III gets 2200 shots out of its LP-E4 battery, while the 50D can take 800 images on a single charge of its BP-511A power pack.

The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. If you want to switch the focus of the display and review another camera pair, just select a new right or left comparator from among the camera models in the table. Alternatively, you can also move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.

Camera Body Specifications
Camera Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
(CIPA)
Weather
Sealing
(y/n)
Camera
Launch
(year)
Launch
Price
(USD)
Street
Price
(amazon)
Used
Price
(ebay)
Canon 1D Mark III (⇒ rgt) 6.1 in 6.2 in 3.1 in 40.7 oz 2200 YES 2007 4,499discont. check
Canon 50D (⇒ lft) 5.7 in 4.3 in 2.9 in 29.0 oz 800 YES 2008 1,299discont. check
Canon 5DS R (⇒ lft | rgt) 6.0 in 4.6 in 3.0 in 32.8 oz 700 YES 2015 3,699 latest check
Canon 7D II (⇒ lft | rgt) 5.9 in 4.4 in 3.1 in 32.1 oz 670 YES 2014 1,799 latest check
Canon 70D (⇒ lft | rgt) 5.5 in 4.1 in 3.1 in 26.6 oz 920 YES 2013 1,199discont. check
Canon 5D Mark III (⇒ lft | rgt) 6.0 in 4.6 in 3.0 in 33.5 oz 950 YES 2012 3,499discont. check
Canon 60D (⇒ lft | rgt) 5.7 in 4.2 in 3.1 in 26.6 oz 1100 YES 2010 1,399discont. check
Canon 7D (⇒ lft | rgt) 5.8 in 4.4 in 2.9 in 30.3 oz 800 YES 2009 1,699discont. check
Canon 1D Mark IV (⇒ lft | rgt) 6.1 in 6.2 in 3.1 in 43.4 oz 1500 YES 2009 4,999discont. check
Canon 5D Mark II (⇒ lft | rgt) 6.0 in 4.5 in 3.0 in 30.0 oz 850 YES 2008 3,499discont. check
Canon 40D (⇒ lft | rgt) 5.7 in 4.3 in 2.9 in 29.0 oz 750 no 2007 1,299discont. check
Canon 1Ds Mark III (⇒ lft | rgt) 5.9 in 6.3 in 3.1 in 48.9 oz 1800 YES 2007 7,999discont. check
Canon 1D Mark II (⇒ lft | rgt) 6.1 in 6.2 in 3.1 in 54.1 oz 1200 YES 2004 4,499discont. check
Canon 1Ds (⇒ lft | rgt) 6.1 in 6.2 in 3.1 in 44.6 oz 600 YES 2002 8,999discont. check
Nikon D3S (⇒ lft | rgt) 6.3 in 6.2 in 3.5 in 43.7 oz 4200 YES 2009 5,199discont. check
Nikon D3 (⇒ lft | rgt) 6.3 in 6.2 in 3.5 in 45.9 oz 4300 YES 2007 4,999discont. check
Nikon D2Xs (⇒ lft | rgt) 6.2 in 5.9 in 3.4 in 44.2 oz 3800 YES 2006 4,699discont. check

The price is, of course, an important factor in any camera decision. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The 50D was launched at a markedly lower price (by 71 percent) than the 1D Mark III, 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: Canon 1D Mark III vs Canon 50D

The imaging sensor is at the core of digital cameras and its size is one of the main determining factors 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. 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 tend to be associated with larger, more expensive camera bodies and lenses.

Of the two cameras under consideration, the Canon 1D Mark III features an APS-H sensor and the Canon 50D an APS-C sensor. The sensor area in the 50D is 37 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.3 and 1.6. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Canon 1D Mark III and Canon 50D sensor measures

Despite having a smaller sensor, the 50D offers a higher resolution of 15.1 megapixel, compared with 10.1 MP of the 1D Mark III. This megapixel advantage comes at the cost of a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 4.69μm versus 7.21μm for the 1D Mark III). However, it should be noted that the 50D is a somewhat more recent model (by 1 year and 6 months) than the 1D Mark III, and its sensor might have benefitted from technological advances during this time that partly offset its pixel-size disadvantage.

1D Mark III versus 50D MP

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service determines an overall sensor rating, as well as sub-scores for low-light sensitivity ("DXO Sports"), dynamic range ("DXO Landscape"), and color depth ("DXO Portrait"). Of the two cameras under review, the 1D Mark III has a notably higher overall DXO score than the 50D (overall score 8 points higher), which gives it an advantage in terms of imaging quality. This advantage is based on 0.9 bits higher color depth, 0.3 EV in additional dynamic range, and 0.6 stops in additional low light sensitivity. The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.

Sensor Characteristics
Camera Sensor
Class
Resolution
(Megapixel)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Canon 1D Mark III (⇒ rgt) APS-H 10.1 3888 2592 no 22.7 11.7 1078 71
Canon 50D (⇒ lft) APS-C 15.1 4752 3168 no 21.8 11.4 696 63
Canon 5DS R (⇒ lft | rgt) Full Frame 50.3 8688 5792 1080/60p 24.6 12.4 2308 86
Canon 7D II (⇒ lft | rgt) APS-C 20.0 5472 3648 1080/60p 22.4 11.8 1082 70
Canon 70D (⇒ lft | rgt) APS-C 20.0 5472 3648 1080/30p 22.5 11.6 926 68
Canon 5D Mark III (⇒ lft | rgt) Full Frame 22.1 5760 3840 1080/30p 24 11.7 2293 81
Canon 60D (⇒ lft | rgt) APS-C 17.9 5184 3456 1080/30p 22.2 11.5 813 66
Canon 7D (⇒ lft | rgt) APS-C 17.9 5184 3456 1080/30p 22.0 11.7 854 66
Canon 1D Mark IV (⇒ lft | rgt) APS-H 16.0 4896 3264 1080/30p 22.8 12.0 1320 74
Canon 5D Mark II (⇒ lft | rgt) Full Frame 21.0 5616 3744 1080/30p 23.7 11.9 1815 79
Canon 40D (⇒ lft | rgt) APS-C 10.1 3888 2592 no 22.1 11.3 703 64
Canon 1Ds Mark III (⇒ lft | rgt) Full Frame 21.0 5616 3744 no 24.0 12.0 1663 80
Canon 1D Mark II (⇒ lft | rgt) APS-H 8.2 3504 2336 no 22.3 11.1 1003 66
Canon 1Ds (⇒ lft | rgt) Full Frame 11.0 4064 2704 no 21.8 11.0 954 63
Nikon D3S (⇒ lft | rgt) Full Frame 12.1 4256 2832 720/24p 23.5 12.0 3253 82
Nikon D3 (⇒ lft | rgt) Full Frame 12.1 4256 2832 no 23.5 12.2 2290 81
Nikon D2Xs (⇒ lft | rgt) APS-C 12.2 4288 2848 no 22.2 10.9 489 59
The 50D offers Live View, so that it can project the live image that the sensor receives onto the rear screen for framing. The 1D Mark III lacks this capability. Both cameras are still-image focused and cannot record videos.

Feature comparison: Canon 1D Mark III vs Canon 50D

Apart from body and sensor, cameras can and do differ across a range of features. The 1D Mark III and the 50D 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 following table reports on some other key feature differences and similarities of the Canon 1D Mark III, the Canon 50D, and comparable cameras. The full specs-sheets can be found in the camera manual or, for example, in the dpreview camera hub.

Core Features
Camera Viewfinder
(Type or
'000 dots)
Control
Panel
(Y/n)
LCD
Size
(inch)
LCD
Resolution
('000 dots)
LCD
Attach-
ment
Touch
Screen
(Y/n)
Shutter
speed
(1/sec)
Shutter
flaps
(1/sec))
Build-in
Flash
(GN)
Build-in
Image
Stab
Canon 1D Mark III (⇒ rgt) optical YES 3.0 230 fixed no 8000 10.0 no no
Canon 50D (⇒ lft) optical YES 3.0 920 fixed no 8000 6.3 13 no
Canon 5DS R (⇒ lft | rgt) optical YES 3.2 1040 fixed no 8000 5.0 no no
Canon 7D II (⇒ lft | rgt) optical YES 3.0 1040 fixed no 8000 10.0 11 no
Canon 70D (⇒ lft | rgt) optical YES 3.0 1040 swivel YES 8000 7.0 12 no
Canon 5D Mark III (⇒ lft | rgt) optical YES 3.2 1040 fixed no 8000 6.0 no no
Canon 60D (⇒ lft | rgt) optical YES 3.0 1040 swivel no 8000 5.3 13 no
Canon 7D (⇒ lft | rgt) optical YES 3.0 920 fixed no 8000 8.0 12 no
Canon 1D Mark IV (⇒ lft | rgt) optical YES 3.0 920 fixed no 8000 10.0 no no
Canon 5D Mark II (⇒ lft | rgt) optical YES 3.0 920 fixed no 8000 3.9 no no
Canon 40D (⇒ lft | rgt) optical YES 3.0 230 fixed no 8000 6.5 12 no
Canon 1Ds Mark III (⇒ lft | rgt) optical YES 3.0 230 fixed no 8000 5.0 no no
Canon 1D Mark II (⇒ lft | rgt) optical YES 2.0 230 fixed no 8000 8.3 no no
Canon 1Ds (⇒ lft | rgt) optical YES 2.0 120 fixed no 8000 3.0 no no
Nikon D3S (⇒ lft | rgt) optical YES 3.0 921 fixed no 8000 11.0 no no
Nikon D3 (⇒ lft | rgt) optical YES 3.0 922 fixed no 8000 11.0 no no
Nikon D2Xs (⇒ lft | rgt) optical YES 2.5 230 fixed no 8000 5.0 no no

Both the 1D Mark III and the 50D 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 50D was followed by the Canon 60D.

Review summary: Canon 1D Mark III vs Canon 50D

So how do things add up? Is the Canon 1D Mark III better than the Canon 50D or vice versa? The listing below highlights the relative strengths of the two models.


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

  • Better image quality: Scores markedly higher (8 points) in the DXO overall assessment.
  • Better low-light sensitivity: Requires less light for good images (0.6 stops ISO advantage).
  • Faster burst: Shoots at higher frequency (10 vs 6.3 flaps/sec) to capture the decisive moment.
  • Longer lasting: Can take more shots (2200 versus 800) on a single battery charge.
  • More heavily discounted: Has been on the market for longer (launched in February 2007).

Reasons to prefer the Canon EOS 50D:

  • More detail: Has more megapixels (15.1 vs 10.1MP), which boosts linear resolution by 22%.
  • More detailed LCD: Has a higher resolution rear screen (920k vs 230k dots).
  • More compact: Is smaller (146x108mm vs 156x156.6mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 333g or 29 percent) and is thus easier to take along.
  • Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
  • More affordable: Was introduced into a lower priced category (71 percent cheaper at launch).
  • More modern: Was introduced somewhat (1 year and 6 months) more recently.

If the count of individual advantages (bullet points above) is taken as a guide, the 50D emerges as the winner of the match-up (7 : 5 points). However, the relative importance of the various individual camera aspects will vary according to personal preferences and needs, so that you might like to apply corresponding weights to the particular features before making a decision on a new camera.

1D Mark III 05:07 50D

In any case, while the comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it says nothing about, for example, the handling, responsiveness, and overall imaging quality of the 1D Mark III and the 50D 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. This is why expert reviews are important. The following table reports the overall rankings of the cameras as published by some of the major camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, photographyblog). The full reviews are available by clicking on the site logo in the table header.

Review scores
Camera cameralabs dpreview ephotozine imaging-resource photographyblog Camera
Launch
(year)
Launch
Price
(USD)
Street
Price
(amazon)
Used
Price
(ebay)
Canon 1D Mark III (⇒ rgt) - - - reviewed - 2007 4,499discont. check
Canon 50D (⇒ lft) 90/100 HiRec HiRec 4.5/5 5/5 4.5/5 2008 1,299discont. check
Canon 5DS R (⇒ lft | rgt) Rec 83/100 Silver 5/5 5/5 4.5/5 2015 3,699 latest check
Canon 7D II (⇒ lft | rgt) Rec 84/100 Silver 4/5 5/5 4.5/5 2014 1,799 latest check
Canon 70D (⇒ lft | rgt) HiRec 83/100 Gold 4.5/5 4.5/5 5/5 2013 1,199discont. check
Canon 5D Mark III (⇒ lft | rgt) HiRec 82/100 Gold 4.5/5 5/5 4.5/5 2012 3,499discont. check
Canon 60D (⇒ lft | rgt) 87/100 Rec 79/100 Silver 4/5 5/5 4.5/5 2010 1,399discont. check
Canon 7D (⇒ lft | rgt) 93/100 HiRec 84/100 4.5/5 5/5 4.5/5 2009 1,699discont. check
Canon 1D Mark IV (⇒ lft | rgt) - 89/100 Gold - 5/5 - 2009 4,999discont. check
Canon 5D Mark II (⇒ lft | rgt) 91/100 79/100 HiRec 4/5 5/5 - 2008 3,499discont. check
Canon 40D (⇒ lft | rgt) 90/100 HiRec HiRec 4.5/5 reviewed 4.5/5 2007 1,299discont. check
Canon 1Ds Mark III (⇒ lft | rgt) - HiRec 4.5/5 - - 2007 7,999discont. check
Canon 1D Mark II (⇒ lft | rgt) - HiRec - reviewed - 2004 4,499discont. check
Canon 1Ds (⇒ lft | rgt) - HiRec - - - 2002 8,999discont. check
Nikon D3S (⇒ lft | rgt) - 89/100 Gold 4.5/5 5/5 5/5 2009 5,199discont. check
Nikon D3 (⇒ lft | rgt) - HiRec 5/5 reviewed 4.5/5 2007 4,999discont. check
Nikon D2Xs (⇒ lft | rgt) - - - reviewed - 2006 4,699discont. check

The above review scores should be interpreted with care, though. The ratings are only valid when refering to cameras in the same category and of the same age. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. Also, please note that some of the review sites have changed their methodology and reporting over time.

Other camera comparisons

Did this review help to inform your camera decision process? In case you are interested in seeing how other cameras pair up, just make your choice using the following search menu. An an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool. If the camera you are interested in is not available, please send me an email, and I will try to update the database with the necessary infos.

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