Canon 40D vs Sony RX100 III
The Canon EOS 40D and the Sony Cyber-shot DSC-RX100 III are two digital cameras that were revealed to the public, respectively, in August 2007 and May 2014. The 40D is a DSLR, while the RX100 III is a fixed lens compact. The cameras are based on an APS-C (40D) and an one-inch (RX100 III) sensor. The Canon has a resolution of 10.1 megapixels, whereas the Sony provides 20 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 Canon EOS 40D and the Sony Cyber-shot DSC-RX100 III? 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.
The physical size and weight of the Canon 40D and the Sony RX100 III are illustrated in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive views from the front, the top, and the rear side are shown. All size dimensions 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 Sony RX100 III is considerably smaller (62 percent) than the Canon 40D. In this context, it is worth noting that neither the 40D nor the RX100 III are weather-sealed.
The above size and weight comparisons are to some extent incomplete and possibly misleading, as the RX100 III has a lens built in, whereas the 40D is an interchangeable lens camera that requires a separate lens. Attaching the latter will add extra weight and bulk to the setup. You can compare the optics available for the 40D and their specifications in the Canon EF Lens Catalog.
Concerning battery life, the 40D gets 750 shots out of its BP-511A battery, while the RX100 III can take 320 images on a single charge of its NP-BX1 power pack. The power pack in the RX100 III can be charged via the USB port, which can be very convenient when travelling.
The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. In case you want to display and compare another camera duo, you can use the CAM-parator app to select your camera combination among a large number of options.
|1.||Canon 40D||146 mm||108 mm||74 mm||822 g||750||n||Aug 2007||1,299|
|2.||Sony RX100 III||102 mm||58 mm||41 mm||290 g||320||n||May 2014||799|
|3.||Canon G7 X||103 mm||60 mm||40 mm||304 g||210||n||Sep 2014||699|
|4.||Canon T3||130 mm||100 mm||78 mm||495 g||700||n||Feb 2011||449|
|5.||Canon 60D||145 mm||106 mm||79 mm||755 g||1100||Y||Aug 2010||1,399|
|6.||Canon 50D||146 mm||108 mm||74 mm||822 g||800||Y||Aug 2008||1,299|
|7.||Canon XS||126 mm||98 mm||65 mm||502 g||500||n||Jun 2008||449|
|8.||Canon XSi||129 mm||98 mm||62 mm||524 g||500||n||Jan 2008||799|
|9.||Canon 30D||144 mm||106 mm||74 mm||785 g||750||n||Feb 2006||1,399|
|10.||Canon XTi||127 mm||84 mm||65 mm||556 g||370||n||Aug 2006||799|
|11.||Canon 20D||144 mm||106 mm||72 mm||770 g||700||n||Aug 2004||1,499|
|12.||Canon 10D||150 mm||107 mm||75 mm||850 g||500||n||Feb 2003||1,999|
|13.||Nikon D90||132 mm||103 mm||77 mm||703 g||850||n||Aug 2008||1,299|
|14.||Sony RX100 VII||102 mm||58 mm||43 mm||302 g||260||n||Jul 2019||1,199|
|15.||Sony RX100 IV||102 mm||58 mm||41 mm||298 g||280||n||Jun 2015||999|
|16.||Sony RX100 II||102 mm||58 mm||38 mm||281 g||350||n||Jun 2013||749|
|17.||Sony RX100||102 mm||58 mm||36 mm||240 g||330||n||Jun 2012||649|
|Notes: Measurements and pricing do not include easily detachable parts, such as add-on or 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 RX100 III was launched at a lower price than the 40D, despite having a lens built in. 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.
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. 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 40D features an APS-C sensor and the Sony RX100 III an one-inch sensor. The sensor area in the RX100 III is 65 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.6 and 2.7. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
Despite having a smaller sensor, the RX100 III offers a higher resolution of 20 megapixels, compared with 10.1 MP of the 40D. 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 2.41μm versus 5.73μm for the 40D). However, it should be noted that the RX100 III is much more recent (by 6 years and 8 months) than the 40D, 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 Sony RX100 III implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the RX100 III for good quality output (200 dots per inch) amounts to 27.4 x 18.2 inches or 69.5 x 46.3 cm, for very good quality (250 dpi) 21.9 x 14.6 inches or 55.6 x 37.1 cm, and for excellent quality (300 dpi) 18.2 x 12.2 inches or 46.3 x 30.9 cm. The corresponding values for the Canon 40D are 19.4 x 13 inches or 49.4 x 32.9 cm for good quality, 15.6 x 10.4 inches or 39.5 x 26.3 cm for very good quality, and 13 x 8.6 inches or 32.9 x 21.9 cm for excellent quality prints.
The Canon EOS 40D has a native sensitivity range from ISO 100 to ISO 1600, which can be extended to ISO 100-3200. The corresponding ISO settings for the Sony Cyber-shot DSC-RX100 III are ISO 100 to ISO 12800, with the possibility to increase the ISO range to 80-25600.
Consistent information on actual sensor performance is available from DXO Mark for many cameras. 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. The Overall DXO ratings for the two cameras under consideration are close, suggesting that they provide similar imaging performance. The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.
|2.||Sony RX100 III||1-inch||20.0||5472||3648||1080/60p||22.4||12.3||495||67|
|3.||Canon G7 X||1-inch||20.0||5472||3648||1080/60p||23.0||12.7||556||71|
|14.||Sony RX100 VII||1-inch||20.0||5472||3648||4K/30p||21.8||12.4||418||63|
|15.||Sony RX100 IV||1-inch||20.0||5472||3648||4K/30p||22.8||12.6||591||70|
|16.||Sony RX100 II||1-inch||20.0||5472||3648||1080/60p||22.5||12.4||483||67|
Many modern cameras are not only capable of taking still images, but can also record movies. The RX100 III indeed provides for movie recording, while the 40D does not. The highest resolution format that the RX100 III can use is 1080/60p.
Apart from body and sensor, cameras can and do differ across a variety of features. For example, the RX100 III has an electronic viewfinder (1440k dots), while the 40D has an optical one. Both systems have their advantages, with the electronic viewfinder making it possible to project supplementary shooting information into the framing view, whereas the optical viewfinder offers lag-free viewing and a very clear framing image. The viewfinders of both cameras offer the same magnification (0.59x), but the one in the RX100 III has a wider field of view (100%) than the finder in the 40D (95%), so that a larger proportion of the captured image is visible. The table below summarizes some of the other core capabilities of the Canon 40D and Sony RX100 III in connection with corresponding information for a sample of similar cameras.
|1.||Canon 40D||optical||Y||3.0 / 230||fixed||n||1/8000s||6.5||Y||n|
|2.||Sony RX100 III||1440||n||3.0 / 1229||tilting||n||1/2000s||10.0||Y||Y|
|3.||Canon G7 X||none||n||3.0 / 1040||tilting||Y||1/2000s||6.5||Y||Y|
|4.||Canon T3||optical||n||2.7 / 230||fixed||n||1/4000s||3.0||Y||n|
|5.||Canon 60D||optical||Y||3.0 / 1040||swivel||n||1/8000s||5.3||Y||n|
|6.||Canon 50D||optical||Y||3.0 / 920||fixed||n||1/8000s||6.3||Y||n|
|7.||Canon XS||optical||n||2.5 / 230||fixed||n||1/4000s||3.0||Y||n|
|8.||Canon XSi||optical||n||3.0 / 230||fixed||n||1/4000s||3.5||Y||n|
|9.||Canon 30D||optical||Y||2.5 / 230||fixed||n||1/8000s||5.0||Y||n|
|10.||Canon XTi||optical||n||2.5 / 230||fixed||n||1/4000s||3.0||Y||n|
|11.||Canon 20D||optical||Y||1.8 / 118||fixed||n||1/8000s||5.0||Y||n|
|12.||Canon 10D||optical||Y||1.8 / 118||fixed||n||1/4000s||3.0||Y||n|
|13.||Nikon D90||optical||Y||3.0 / 920||fixed||n||1/4000s||4.5||Y||n|
|14.||Sony RX100 VII||2359||n||3.0 / 921||tilting||Y||1/2000s||90.0||Y||Y|
|15.||Sony RX100 IV||2359||n||3.0 / 1228||tilting||n||1/2000s||16.0||Y||Y|
|16.||Sony RX100 II||optional||n||3.0 / 1229||tilting||n||1/2000s||10.0||Y||Y|
|17.||Sony RX100||none||n||3.0 / 1229||fixed||n||1/2000s||10.0||Y||Y|
One feature that is present on the 40D, but is missing on the RX100 III 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 RX100 III has an articulated screen that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in taking selfies. In contrast, the 40D does not have a selfie-screen.
The 40D writes its imaging data to Compact Flash cards, while the RX100 III uses SDXC or Memory Stick PRO Duo cards.
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 40D and Sony Cyber-shot DSC-RX100 III and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
Mic / Speaker
|1.||Canon 40D||Y||- / -||-||-||-||2.0||-||-||-|
|2.||Sony RX100 III||-||stereo / mono||-||-||micro||2.0||Y||Y||-|
|3.||Canon G7 X||-||stereo / mono||-||-||micro||2.0||Y||Y||-|
|4.||Canon T3||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|5.||Canon 60D||Y||mono / mono||Y||-||mini||2.0||-||-||-|
|6.||Canon 50D||Y||- / -||-||-||mini||2.0||-||-||-|
|7.||Canon XS||Y||- / -||-||-||-||2.0||-||-||-|
|8.||Canon XSi||Y||- / -||-||-||mini||2.0||-||-||-|
|9.||Canon 30D||Y||- / -||-||-||-||2.0||-||-||-|
|10.||Canon XTi||Y||- / -||-||-||-||2.0||-||-||-|
|11.||Canon 20D||Y||- / -||-||-||-||1.1||-||-||-|
|12.||Canon 10D||Y||- / -||-||-||-||1.1||-||-||-|
|13.||Nikon D90||Y||mono / mono||-||-||mini||2.0||-||-||-|
|14.||Sony RX100 VII||-||stereo / mono||Y||-||micro||2.0||Y||Y||Y|
|15.||Sony RX100 IV||-||stereo / mono||-||-||micro||2.0||Y||Y||-|
|16.||Sony RX100 II||Y||stereo / mono||-||-||micro||2.0||Y||Y||-|
|17.||Sony RX100||-||stereo / mono||-||-||micro||2.0||-||-||-|
It is notable that the 40D has a hotshoe, while the RX100 III does not. This socket makes it possible to easily attach optional accessories, such as an external flash gun.
Studio photographers will appreciate that the Canon 40D (unlike the RX100 III) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
Both the 40D and the RX100 III have been discontinued, but can regularly be found used on eBay. The 40D was replaced by the Canon 50D, while the RX100 III was followed by the Sony RX100 IV. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Canon and Sony websites.
So what conclusions can be drawn? Is the Canon 40D better than the Sony RX100 III or vice versa? A synthesis of the relative strong points of each of the models is listed below.
Reasons to prefer the Canon EOS 40D:
- Better low-light sensitivity: Requires less light for good images (0.5 stops ISO advantage).
- Brighter framing: Features an optical viewfinder for clear, lag-free composition.
- Easier setting verification: Features an LCD display on top to control shooting parameters.
- Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/2000s) to freeze action.
- More flexible: Can take a variety of interchangeable lenses, including specialty optics.
- Longer lasting: Can take more shots (750 versus 320) on a single battery charge.
- Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
- Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
- More heavily discounted: Has been available for much longer (launched in August 2007).
Advantages of the Sony Cyber-shot DSC-RX100 III:
- More detail: Has more megapixels (20 vs 10.1MP), which boosts linear resolution by 41%.
- More dynamic range: Captures a broader range of light and dark details (1 EV of extra DR).
- Broader imaging potential: Can capture not only stills but also 1080/60p video.
- More framing info: Has an electronic viewfinder that displays shooting data.
- More complete view: Has a viewfinder with a larger field of view (100% vs 95%).
- More detailed LCD: Has a higher resolution rear screen (1229k vs 230k dots).
- More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
- More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
- Faster burst: Shoots at higher frequency (10 vs 6.5 flaps/sec) to capture the decisive moment.
- Ready to shoot: Comes with an integrated lens, while the 40D requires a separate lens.
- More compact: Is smaller (102x58mm vs 146x108mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight even though it has a lens built in (unlike the 40D).
- Easier travel charging: Can be conveniently charged via its USB port.
- Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
- Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
- Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
- More affordable: Was introduced at a lower price, despite coming with a built-in lens.
- More modern: Reflects 6 years and 8 months of technical progress since the 40D launch.
If the number of relative strengths (bullet points above) is taken as a guide, the RX100 III is the clear winner of the contest (19 : 9 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. A professional sports photographer will view the differences between cameras in a way that diverges from the perspective of a street photog, and a person interested in family portraits has distinct needs from a landscape 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 Canon 40D and the Sony RX100 III place the cameras among the top in their class? Find out in the latest Best DSLR Camera and Best Travel-Zoom Camera listings whether the two cameras rank among the cream of the crop.
In any case, while the specs-based evaluation of cameras can be instructive in revealing their potential as photographic tools, it says little about, for example, the shooting experience and imaging performance of the 40D and the RX100 III in practical situations. At times, user reviews, such as those published at amazon, address these issues in a useful manner, but such feedback is on many occasions incomplete, inconsistent, and unreliable.
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.
|1.||Canon 40D||..||+ +||..||+ +||4.5/5||4.5/5||Aug 2007||1,299|
|2.||Sony RX100 III||5/5||+ +||..||82/100||4.5/5||5/5||May 2014||799|
|3.||Canon G7 X||4/5||+ +||..||77/100||4.5/5||4.5/5||Sep 2014||699|
|4.||Canon T3||..||80/100||..||69/100||4/5||4.5/5||Feb 2011||449|
|5.||Canon 60D||5/5||+||..||79/100||4/5||4.5/5||Aug 2010||1,399|
|6.||Canon 50D||..||+ +||..||+ +||4.5/5||4.5/5||Aug 2008||1,299|
|7.||Canon XS||..||82/100||..||+ +||3.5/5||4.5/5||Jun 2008||449|
|8.||Canon XSi||..||+ +||..||+ +||4/5||4.5/5||Jan 2008||799|
|9.||Canon 30D||..||+ +||..||+ +||o||..||Feb 2006||1,399|
|10.||Canon XTi||..||+ +||..||+ +||o||4/5||Aug 2006||799|
|11.||Canon 20D||..||..||..||+ +||..||..||Aug 2004||1,499|
|12.||Canon 10D||..||..||..||+ +||..||..||Feb 2003||1,999|
|13.||Nikon D90||..||+ +||..||+ +||4/5||4.5/5||Aug 2008||1,299|
|14.||Sony RX100 VII||4.5/5||..||4/5||..||4/5||5/5||Jul 2019||1,199|
|15.||Sony RX100 IV||4.5/5||+ +||..||85/100||4/5||4.5/5||Jun 2015||999|
|16.||Sony RX100 II||5/5||+ +||..||79/100||4.5/5||4.5/5||Jun 2013||749|
|17.||Sony RX100||5/5||+ +||..||78/100||4/5||5/5||Jun 2012||649|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
The review scores listed above should be treated with care, though. The ratings are only valid when referring to cameras in the same category and of the same age. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, 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 are interested in seeing how other cameras pair up, 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.
- Canon 1200D vs Canon 40D
- Canon 40D vs Canon G1 X Mark II
- Canon 40D vs Leica CL
- Canon 40D vs Panasonic G1
- Canon 40D vs Panasonic ZS80
- Canon 40D vs Sony NEX-3
- Leica M10 vs Sony RX100 III
- Leica T vs Sony RX100 III
- Nikon D2Xs vs Sony RX100 III
- Sigma fp vs Sony RX100 III
- Sony A7C vs Sony RX100 III
- Sony A900 vs Sony RX100 III
Specifications: Canon 40D vs Sony RX100 III
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||Canon 40D||Sony RX100 III|
|Camera Type||Digital single lens reflex||Fixed lens compact camera|
|Camera Lens||Canon EF mount lenses||24-70mm f/1.8-2.8|
|Launch Date||August 2007||May 2014|
|Launch Price||USD 1,299||USD 799|
|Sensor Specs||Canon 40D||Sony RX100 III|
|Sensor Format||APS-C Sensor||1" Sensor|
|Sensor Size||22.3 x 14.9 mm||13.2 x 8.8 mm|
|Sensor Area||332.27 mm2||116.16 mm2|
|Sensor Diagonal||26.8 mm||15.9 mm|
|Sensor Resolution||10.1 Megapixels||20 Megapixels|
|Image Resolution||3888 x 2592 pixels||5472 x 3648 pixels|
|Pixel Pitch||5.73 μm||2.41 μm|
|Pixel Density||3.03 MP/cm2||17.18 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||no Video||1080/60p Video|
|ISO Setting||100 - 1,600 ISO||100 - 12,800 ISO|
|ISO Boost||100 - 3,200 ISO||80 - 25,600 ISO|
|Image Processor||DIGIC 3||BIONZ X|
|DXO Sensor Quality (score)||64||67|
|DXO Color Depth (bits)||22.1||22.4|
|DXO Dynamic Range (EV)||11.3||12.3|
|DXO Low Light (ISO)||703||495|
|Screen Specs||Canon 40D||Sony RX100 III|
|Viewfinder Type||Optical viewfinder||Electronic viewfinder|
|Viewfinder Field of View||95%||100%|
|Viewfinder Resolution||1440k dots|
|Top-Level Screen||Control Panel||no Top Display|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0inch||3.0inch|
|LCD Resolution||230k dots||1229k dots|
|LCD Attachment||Fixed screen||Tilting screen|
|Shooting Specs||Canon 40D||Sony RX100 III|
|Focus System||Phase-detect AF||Contrast-detect AF|
|Manual Focusing Aid||no Peaking Feature||Focus Peaking|
|Max Shutter Speed (mechanical)||1/8000s||1/2000s|
|Continuous Shooting||6.5 shutter flaps/s||10 shutter flaps/s|
|Fill Flash||Built-in Flash||Built-in Flash|
|Storage Medium||CF cards||MS or SDXC cards|
|Second Storage Option||Single card slot||Single card slot|
|Connectivity Specs||Canon 40D||Sony RX100 III|
|External Flash||Hotshoe||no Hotshoe|
|Studio Flash||PC Sync socket||no PC Sync|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||no HDMI||micro HDMI|
|Wifi Support||no Wifi||Wifi built-in|
|Near-Field Communication||no NFC||NFC built-in|
|Body Specs||Canon 40D||Sony RX100 III|
|Battery Life (CIPA)||750 shots per charge||320 shots per charge|
|In-Camera Charging||no USB charging||USB charging|
146 x 108 x 74 mm
(5.7 x 4.3 x 2.9 in)
102 x 58 x 41 mm
(4.0 x 2.3 x 1.6 in)
|Camera Weight||822 g (29.0 oz)||290 g (10.2 oz)|
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