Canon 40D versus Canon SL1
The Canon EOS 40D and the Canon EOS Rebel SL1 (labelled Canon 100D in some countries) are two digital cameras that were revealed to the public, respectively, in August 2007 and March 2013. Both are DSLR (Digital Single Lens Reflex) cameras that are equipped with an APS-C sensor. The 40D has a resolution of 10.1 megapixel, whereas the SL1 provides 17.9 MP.
The side-by-side display below illustrates the physical size and weight of the Canon 40D and the Canon SL1. Three consecutive views from the front, the top, and the rear side are shown. All width, height and depth measures are rounded to the nearest millimeter. You can also toggle the display 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 40D – represents the basis or 100 percent across all the size and weight measures).
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Canon SL1 is notably smaller (32 percent) than the Canon 40D. Moreover, the SL1 is substantially lighter (50 percent) than the 40D. In this context, it is worth noting that neither the 40D nor the SL1 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 comparisons there.
|Camera Body Specifications
|Canon 40D (⇒ rgt)||5.7 in||4.3 in||2.9 in||29.0 oz||750||no||2007||1,299||discont.||check|
|Canon SL1 (⇒ lft)||4.6 in||3.6 in||2.7 in||14.4 oz||380||no||2013||549||discont.||check|
|Canon SL2 (⇒ lft | rgt)||4.8 in||3.7 in||2.8 in||16.0 oz||650||no||2017||549||latest||check|
|Canon T6i (⇒ lft | rgt)||5.2 in||4.0 in||3.1 in||19.6 oz||440||no||2015||749||discont.||check|
|Canon T6s (⇒ lft | rgt)||5.2 in||4.0 in||3.1 in||19.9 oz||440||no||2015||849||discont.||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 T5i (⇒ lft | rgt)||5.2 in||3.9 in||3.1 in||20.5 oz||440||no||2013||649||discont.||check|
|Canon 70D (⇒ lft | rgt)||5.5 in||4.1 in||3.1 in||26.6 oz||920||YES||2013||1,199||discont.||check|
|Canon G16 (⇒ lft | rgt)||4.3 in||3.0 in||1.6 in||12.6 oz||360||no||2013||549||latest||check|
|Canon 50D (⇒ lft | rgt)||5.7 in||4.3 in||2.9 in||29.0 oz||800||YES||2008||1,299||discont.||check|
|Canon 30D (⇒ lft | rgt)||5.7 in||4.2 in||2.9 in||27.7 oz||750||no||2006||1,399||discont.||check|
|Canon 20D (⇒ lft | rgt)||5.7 in||4.2 in||2.8 in||27.2 oz||700||no||2004||1,499||discont.||check|
|Panasonic GH1 (⇒ lft | rgt)||4.9 in||3.5 in||1.8 in||13.6 oz||..||no||2009||1,499||discont.||check|
The listed prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The SL1 was launched at a markedly lower price (by 58 percent) than the 40D, 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.
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. 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.
While the two cameras under review share the same sensor size, the SL1 offers a higher resolution of 17.9 megapixel, compared with 10.1 MP of the 40D. This megapixel advantage translates into a 33 percent gain in linear resolution. On the other hand, these sensor specs imply that the SL1 has a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 4.31μm versus 5.73μm for the 40D). However, it should be noted that the SL1 is much more recent (by 5 years and 7 months) than the 40D, and its sensor will have benefitted from technological advances during this time that compensate for the smaller pixel size.
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"). 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.
|Canon 40D (⇒ rgt)||APS-C||10.1||3888||2592||no||22.1||11.3||703||64|
|Canon SL1 (⇒ lft)||APS-C||17.9||5184||3456||1080/30p||21.8||11.3||843||63|
|Canon SL2 (⇒ lft | rgt)||APS-C||24.0||6000||4000||1080/60p||23.6||13.4||1041||79|
|Canon T6i (⇒ lft | rgt)||APS-C||24.0||6000||4000||1080/60p||22.7||12.0||919||71|
|Canon T6s (⇒ lft | rgt)||APS-C||24.0||6000||4000||1080/30p||22.6||12.0||915||70|
|Canon 7D II (⇒ lft | rgt)||APS-C||20.0||5472||3648||1080/60p||22.4||11.8||1082||70|
|Canon T5i (⇒ lft | rgt)||APS-C||17.9||5184||3456||1080/30p||21.7||11.2||681||61|
|Canon 70D (⇒ lft | rgt)||APS-C||20.0||5472||3648||1080/30p||22.5||11.6||926||68|
|Canon G16 (⇒ lft | rgt)||1/1.7||12.0||4000||3000||1080/60p||21.0||11.7||230||54|
|Canon 50D (⇒ lft | rgt)||APS-C||15.1||4752||3168||no||21.8||11.4||696||63|
|Canon 30D (⇒ lft | rgt)||APS-C||8.2||3504||2336||no||21.5||10.8||736||59|
|Canon 20D (⇒ lft | rgt)||APS-C||8.2||3504||2336||no||21.9||11.0||721||62|
|Panasonic GH1 (⇒ lft | rgt)||Four Thirds||12.0||4000||3000||1080/24p||21.6||11.6||772||64|
Many modern cameras cannot only take still pictures, but also record videos. The SL1 indeed provides for movie recording, while the 40D does not. The highest resolution format that the SL1 can use is 1080/30p.
Apart from body and sensor, cameras can and do differ across a range of features. The 40D and the SL1 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 40D and Canon SL1 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.
|Canon 40D (⇒ rgt)||optical||YES||3.0||230||fixed||no||8000||6.5||12||no|
|Canon SL1 (⇒ lft)||optical||no||3.0||1040||fixed||YES||4000||4.9||9.4||no|
|Canon SL2 (⇒ lft | rgt)||optical||no||3.0||1040||swivel||YES||4000||5.0||9.8||no|
|Canon T6i (⇒ lft | rgt)||optical||no||3.0||1040||swivel||YES||4000||5.0||12||no|
|Canon T6s (⇒ lft | rgt)||optical||YES||3.0||1040||swivel||YES||4000||5.0||12||no|
|Canon 7D II (⇒ lft | rgt)||optical||YES||3.0||1040||fixed||no||8000||10.0||11||no|
|Canon T5i (⇒ lft | rgt)||optical||no||3.0||1040||swivel||YES||4000||5.0||13||no|
|Canon 70D (⇒ lft | rgt)||optical||YES||3.0||1040||swivel||YES||8000||7.0||12||no|
|Canon G16 (⇒ lft | rgt)||optical||no||3.0||922||fixed||no||4000||2.2||7||no|
|Canon 50D (⇒ lft | rgt)||optical||YES||3.0||920||fixed||no||8000||6.3||13||no|
|Canon 30D (⇒ lft | rgt)||optical||YES||2.5||230||fixed||no||8000||5.0||13||no|
|Canon 20D (⇒ lft | rgt)||optical||YES||1.8||118||fixed||no||8000||5.0||13||no|
|Panasonic GH1 (⇒ lft | rgt)||1440||no||3.0||460||swivel||no||4000||3.0||10.5||no|
Both the 40D and the SL1 have been discontinued, but can regularly be found used on ebay. The 40D was replaced by the Canon 50D, while the SL1 was followed by the Canon SL2.
So what is the bottom line? Is there a clear favorite between the Canon 40D and the Canon 40D? The listing below highlights the relative strengths of the two models.
Reasons to prefer the Canon EOS 40D:
- Easier setting verification: Has an LCD display on top to control shooting parameters.
- Faster shutter: Has a higher mechanical shutter speed (8000/sec vs 4000/sec) to freeze action.
- Faster burst: Shoots at higher frequency (6.5 vs 4.9 flaps/sec) to capture the decisive moment.
- Longer lasting: Can take more shots (750 versus 380) on a single battery charge.
- More heavily discounted: Has been available for much longer (launched in August 2007).
Advantages of the Canon EOS Rebel SL1:
- More detail: Has more megapixels (17.9 vs 10.1MP), which boosts linear resolution by 33%.
- Broader imaging potential: Can capture not only stills but also 1080/30p video.
- More detailed LCD: Has a higher resolution rear screen (1040k vs 230k dots).
- Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
- More compact: Is smaller (117x91mm vs 146x108mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight (by 415g or 50 percent) and is thus easier to take along.
- More affordable: Was introduced into a lower priced category (58 percent cheaper at launch).
- More modern: Reflects 5 years and 7 months of technical progress since the 40D launch.
If the count of relative strengths (bullet points above) is taken as a measure, the SL1 emerges as the winner of the match-up (8 : 5 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.
In any case, while the comparison of technical specifications can provide a useful overview of the capabilities of different cameras, it says nothing about, for example, the handling, responsiveness, and overall imaging quality of the 40D and the SL1 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 where reviews by experts come in. The table below summarizes the assessments of some of the best known 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.
|Canon 40D (⇒ rgt)||90/100 HiRec||HiRec||4.5/5||reviewed||4.5/5||2007||1,299||discont.||check|
|Canon SL1 (⇒ lft)||Rec||78/100 Gold||4/5||4/5||4/5||2013||549||discont.||check|
|Canon SL2 (⇒ lft | rgt)||HiRec||78/100 Silver||4.5/5||-||4.5/5||2017||549||latest||check|
|Canon T6i (⇒ lft | rgt)||-||75/100||4.5/5||4.5/5||4.5/5||2015||749||discont.||check|
|Canon T6s (⇒ lft | rgt)||Rec||77/100 Silver||4.5/5||4.5/5||4.5/5||2015||849||discont.||check|
|Canon 7D II (⇒ lft | rgt)||Rec||84/100 Silver||4/5||5/5||4.5/5||2014||1,799||latest||check|
|Canon T5i (⇒ lft | rgt)||-||76/100 Silver||4.5/5||4.5/5||4.5/5||2013||649||discont.||check|
|Canon 70D (⇒ lft | rgt)||HiRec||83/100 Gold||4.5/5||4.5/5||5/5||2013||1,199||discont.||check|
|Canon G16 (⇒ lft | rgt)||Rec||-||4.5/5||4.5/5||4.5/5||2013||549||latest||check|
|Canon 50D (⇒ lft | rgt)||90/100 HiRec||HiRec||4.5/5||5/5||4.5/5||2008||1,299||discont.||check|
|Canon 30D (⇒ lft | rgt)||87/100 HiRec||HiRec||reviewed||reviewed||-||2006||1,399||discont.||check|
|Canon 20D (⇒ lft | rgt)||-||HiRec||-||reviewed||-||2004||1,499||discont.||check|
|Panasonic GH1 (⇒ lft | rgt)||89/100 HiRec||72/100 HiRec||4.5/5||5/5||4.5/5||2009||1,499||discont.||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 comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.
If you would like to see a different side-by-side camera review, just make a corresponding selection in the search boxes below. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored. If you cannot find the camera you are interested in, kindly get in touch, and I will try to locate and add the respective data to the application.
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