PW

Canon 20D versus Canon 30D

The Canon EOS 20D and the Canon EOS 30D are two enthusiast cameras that were officially introduced, respectively, in August 2004 and February 2006. Both are DSLR (Digital Single Lens Reflex) cameras that are equipped with an APS-C sensor. Both cameras offer a resolution of 8.2 megapixel. 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 20D vs Canon 30D

The physical size and weight of the Canon 20D and the Canon 30D are illustrated in the side-by-side display below. Three successive views from the front, the top, and the rear are shown. All width, height and depth measures 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 – the 20D – represents the basis or 100 percent across all the size and weight measures).

Compare Canon 20D vs Canon 30D
20D versus 30D top view
20D and 30D rear side
Body view (20D on the left)

In this particular case, the Canon 20D and the Canon 30D have exactly the same width and height, and, thus, have identically-sized bodies. However, the 30D is slightly heavier (2 percent) than the 20D. In this context, it is worth noting that neither the 20D nor the 30D are weather-sealed.

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. In this particular case, both cameras feature the same lens mount, so that they can use the same lenses. You can find an overview of suitable optics in the Canon EF Lens Catalog.

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 20D (⇒ rgt) 144 mm 106 mm 72 mm 770 g 700 no 2004 1,499discont. check
Canon 30D (⇒ lft) 144 mm 106 mm 74 mm 785 g 750 no 2006 1,399discont. check
Canon 7D II (⇒ lft | rgt) 149 mm 112 mm 78 mm 910 g 670 YES 2014 1,799 latest check
Canon 60D (⇒ lft | rgt) 145 mm 106 mm 79 mm 755 g 1100 YES 2010 1,399discont. check
Canon 7D (⇒ lft | rgt) 148 mm 111 mm 74 mm 860 g 800 YES 2009 1,699discont. check
Canon 50D (⇒ lft | rgt) 146 mm 108 mm 74 mm 822 g 800 YES 2008 1,299discont. check
Canon 40D (⇒ lft | rgt) 146 mm 108 mm 74 mm 822 g 750 no 2007 1,299discont. check
Canon XT (⇒ lft | rgt) 127 mm 94 mm 64 mm 540 g 400 no 2005 899discont. check
Canon 10D (⇒ lft | rgt) 150 mm 107 mm 75 mm 850 g 500 no 2003 1,999discont. check
Canon Rebel (⇒ lft | rgt) 142 mm 99 mm 72 mm 649 g 400 no 2003 899discont. check
Nikon D200 (⇒ lft | rgt) 147 mm 113 mm 74 mm 920 g 400 YES 2005 1,699discont. 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 30D was somewhat cheaper (by 7 percent) than the 20D at launch, but both cameras fall into the same price category. 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 20D vs Canon 30D

The size of the imaging sensor is a crucial determinant of image quality. A large sensor will tend to have larger individual pixels that provide better low-light sensitivity, wider dynamic range, and richer color depth than smaller pixel-units 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.

Both cameras under consideration feature an APS-C sensor and have a format factor (sometimes also referred to as "crop factor") of 1.6. Within the spectrum of camera sensors, this places the review cameras among the medium-sized sensor cameras that aim to strike a balance between image quality and portability. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Canon 20D and Canon 30D sensor measures
Sensor size

The two cameras under review do not only share the same sensor size, but also offer an identical resolution of 8.2 megapixel. This similarity in sensor specs implies that both the 20D and the 30D have the same pixel density, as well as the same pixel size. It should, however, be noted that the 30D is a somewhat more recent model (by 1 year and 6 months) than the 20D, and its sensor might have benefitted from technological advances during this time.

20D versus 30D MP
Sensor resolution

For most cameras, data on sensor performance has been reported by DXO Mark. 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"). The Overall DXO ratings for the two cameras under consideration are close, suggesting that they provide similar image quality. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.

Sensor Characteristics
Camera Sensor
Class
Resolution
(Megapixel)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Canon 20D (⇒ rgt) APS-C 8.2 3504 2336 no 21.9 11.0 721 62
Canon 30D (⇒ lft) APS-C 8.2 3504 2336 no 21.5 10.8 736 59
Canon 7D II (⇒ lft | rgt) APS-C 20.0 5472 3648 1080/60p 22.4 11.8 1082 70
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 50D (⇒ lft | rgt) APS-C 15.1 4752 3168 no 21.8 11.4 696 63
Canon 40D (⇒ lft | rgt) APS-C 10.1 3888 2592 no 22.1 11.3 703 64
Canon XT (⇒ lft | rgt) APS-C 8.0 3456 2304 no 21.8 10.8 637 60
Canon 10D (⇒ lft | rgt) APS-C 6.3 3072 2048 no 21.1 10.9 571 57
Canon Rebel (⇒ lft | rgt) APS-C 6.3 3072 2048 no 21.0 10.8 544 55
Nikon D200 (⇒ lft | rgt) APS-C 10.0 3872 2592 no 22.3 11.5 583 64
Neither the 20D nor the 30D offer Live View, so that they cannot project the live image that the sensor receives onto the rear screen. Moreover, both cameras are still-image focused and cannot record videos.

Feature comparison: Canon 20D vs Canon 30D

Beyond body and sensor, cameras can and do differ across a range of features. The 20D and the 30D 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 table below summarizes some of the other core capabilities of the Canon 20D and Canon 30D in connection with corresponding information for a sample of similar cameras. If needed, the dpreview camera hub, for example, contains further detail on the cameras' specs.

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 20D (⇒ rgt) optical YES 1.8 118 fixed no 8000 5.0 13 no
Canon 30D (⇒ lft) optical YES 2.5 230 fixed no 8000 5.0 13 no
Canon 7D II (⇒ lft | rgt) optical YES 3.0 1040 fixed no 8000 10.0 11 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 50D (⇒ lft | rgt) optical YES 3.0 920 fixed no 8000 6.3 13 no
Canon 40D (⇒ lft | rgt) optical YES 3.0 230 fixed no 8000 6.5 12 no
Canon XT (⇒ lft | rgt) optical no 1.8 115 fixed no 4000 3.0 13 no
Canon 10D (⇒ lft | rgt) optical YES 1.8 118 fixed no 4000 3.0 13 no
Canon Rebel (⇒ lft | rgt) optical no 1.8 118 fixed no 4000 2.5 13 no
Nikon D200 (⇒ lft | rgt) optical YES 2.5 230 fixed no 8000 5.0 12 no

Both the 20D and the 30D have been discontinued, but can regularly be found used on eBay. The 20D was replaced by the Canon 30D, while the 30D was followed by the Canon 40D.

Review summary: Canon 20D vs Canon 30D

So what is the bottom line? Which of the two cameras – the Canon 20D or the Canon 30D – has the upper hand? The listing below highlights the relative strengths of the two models.


Reasons to prefer the Canon EOS 20D:

  • More heavily discounted: Has been on the market for longer (launched in August 2004).

Advantages of the Canon EOS 30D:

  • Larger screen: Has a bigger rear LCD (2.5" vs 1.8") for image review and settings control.
  • More detailed LCD: Has a higher resolution rear screen (230k vs 118k dots).
  • More modern: Was introduced somewhat (1 year and 6 months) more recently.

If the number of relative strengths (bullet points above) is taken as a guide, the 30D emerges as the winner of the match-up (3 : 1 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.

20D 01:03 30D

In any case, while the specs-based evaluation of cameras is instructive in revealing their potential as photographic tools, it remains incomplete and does no justice, for example, to the way the 20D or the 30D handle or 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. 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. The detailed reviews can be accessed, respectively, on the websites of cameralabs.com, dpreview.com, ephotozine.com, imaging-resource.com, and photographyblog.com.

Review scores
Camera camera
labs
.com
dp
review
.com
ephoto
zine
.com
imaging
resource
.com
photography
blog
.com
Camera
Launch
(year)
Launch
Price
(USD)
Street
Price
(amazon)
Used
Price
(ebay)
Canon 20D (⇒ rgt) - HiRec - reviewed - 2004 1,499discont. check
Canon 30D (⇒ lft) 87/100 HiRec HiRec reviewed reviewed - 2006 1,399discont. check
Canon 7D II (⇒ lft | rgt) Rec 84/100 Silver 4/5 5/5 4.5/5 2014 1,799 latest 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 50D (⇒ lft | rgt) 90/100 HiRec HiRec 4.5/5 5/5 4.5/5 2008 1,299discont. check
Canon 40D (⇒ lft | rgt) 90/100 HiRec HiRec 4.5/5 reviewed 4.5/5 2007 1,299discont. check
Canon XT (⇒ lft | rgt) 80/100 HiRec reviewed reviewed - 2005 899discont. check
Canon 10D (⇒ lft | rgt) - HiRec - reviewed - 2003 1,999discont. check
Canon Rebel (⇒ lft | rgt) - HiRec - reviewed - 2003 899discont. check
Nikon D200 (⇒ lft | rgt) 91/100 HiRec HiRec reviewed 5/5 - 2005 1,699discont. check

Care should be taken when interpreting the review scores above, though. The ratings are only valid when refering to cameras in the same category and of the same age. 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. It should also be noted that some of the review sites have over time altered the way they render their verdicts.


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. If the camera you are interested in is not available, kindly get in touch, and I will try to update the database with the necessary infos.

vs

    You are here  »   »