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Sony RX10 IV versus Canon 40D

The Sony Cyber-shot DSC-RX10 IV and the Canon EOS 40D are two enthusiast cameras that were officially introduced, respectively, in September 2017 and August 2007. The RX10 IV is a fixed lens compact, while the 40D is a DSLR. The cameras are based on an one-inch (RX10 IV) and an APS-C (40D) sensor. The Sony has a resolution of 20 megapixel, whereas the Canon provides 10.1 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: Sony RX10 IV vs Canon 40D

An illustration of the physical size and weight of the Sony RX10 IV and the Canon 40D is provided 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. 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 RX10 IV – represents the basis or 100 percent across all the size and weight measures).

Compare Sony RX10 IV vs Canon 40D
Compare RX10 IV versus 40D top
Compare RX10 IV and 40D rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Canon 40D is notably larger (26 percent) than the Sony RX10 IV. It is worth mentioning in this context that the RX10 IV is splash and dust resistant, while the 40D does not feature any corresponding weather-sealing.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the RX10 IV has a lens build 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 find an overview of optics for the 40D and their specifications in the Canon EF Lens Catalog.

Concerning battery life, the RX10 IV gets 400 shots out of its NP-FW50 battery, while the 40D can take 750 images on a single charge of its BP-511A power pack.

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. 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
Sony RX10 IV» 5.2 in 3.7 in 5.7 in 38.6 oz 400 Y Sep 2017 1,699 i i Sony RX10 IV
Canon 40D« 5.7 in 4.3 in 2.9 in 29.0 oz 750 n Aug 2007 1,299- i Canon 40D
Canon G1 X Mark III« » 4.5 in 3.1 in 2.0 in 14.1 oz 200 Y Oct 2017 1,299 i i Canon G1 X Mark III
Canon 50D« » 5.7 in 4.3 in 2.9 in 29.0 oz 800 Y Aug 2008 1,299- i Canon 50D
Canon 30D« » 5.7 in 4.2 in 2.9 in 27.7 oz 750 n Feb 2006 1,399- i Canon 30D
Canon 20D« » 5.7 in 4.2 in 2.8 in 27.2 oz 700 n Aug 2004 1,499- i Canon 20D
Canon 10D« » 5.9 in 4.2 in 3.0 in 30.0 oz 500 n Feb 2003 1,999- i Canon 10D
Fujifilm X-Pro2« » 5.6 in 3.3 in 1.8 in 17.5 oz 350 Y Jan 2016 1,699 i i Fujifilm X-Pro2
Nikon D90« » 5.2 in 4.1 in 3.0 in 24.8 oz 850 n Aug 2008 1,299- i Nikon D90
Panasonic FZ2500« » 5.4 in 4.0 in 5.3 in 32.3 oz 350 n Sep 2016 1,199 i i Panasonic FZ2500
Sony A7 III« » 5.0 in 3.8 in 2.9 in 22.9 oz 610 Y Feb 2018 1,999 i i Sony A7 III
Sony A6300« » 4.7 in 2.6 in 1.9 in 14.3 oz 400 Y Feb 2016 999- i Sony A6300
Sony A6500« » 4.7 in 2.6 in 2.1 in 16.0 oz 350 Y Oct 2016 1,399 i i Sony A6500
Sony RX10 III« » 5.2 in 3.7 in 5.0 in 37.1 oz 420 Y Mar 2016 1,499- i Sony RX10 III
Sony RX100 V« » 4.0 in 2.3 in 1.6 in 10.5 oz 220 n Oct 2016 999 i i Sony RX100 V
Sony RX10 II« » 5.1 in 3.5 in 4.0 in 28.7 oz 400 Y Jun 2015 1,299- i Sony RX10 II
Sony RX10« » 5.1 in 3.5 in 4.0 in 28.7 oz 420 Y Oct 2013 1,299- i Sony RX10

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. 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.

 

Sensor comparison: Sony RX10 IV vs Canon 40D

The size of the sensor inside a digital camera is one of the key determinants 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. 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 more expensive and lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Sony RX10 IV features an one-inch sensor and the Canon 40D an APS-C sensor. The sensor area in the 40D is 186 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 2.7 and 1.6. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Sony RX10 IV and Canon 40D sensor measures

Despite having a smaller sensor, the Sony RX10 IV offers a higher resolution of 20 megapixel, compared with 10.1 MP of the Canon 40D. 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 2.41μm versus 5.73μm for the 40D). However, it should be noted that the RX10 IV is much more recent (by 10 years) than the 40D, and its sensor will have benefitted from technological advances during this time that make it possible to gather light more efficiently.

RX10 IV versus 40D MP

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 following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

Sensor Characteristics
  Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Camera
Model
Sony RX10 IV» 1-inch 20.0 5472 36484K/30p----Sony RX10 IV
Canon 40D« APS-C 10.1 3888 2592-22.111.370364Canon 40D
Canon G1 X Mark III« » APS-C 24.0 6000 40001080/60p----Canon G1 X Mark III
Canon 50D« » APS-C 15.1 4752 3168-21.811.469663Canon 50D
Canon 30D« » APS-C 8.2 3504 2336-21.510.873659Canon 30D
Canon 20D« » APS-C 8.2 3504 2336-21.911.072162Canon 20D
Canon 10D« » APS-C 6.3 3072 2048-21.110.957157Canon 10D
Fujifilm X-Pro2« » APS-C 24.0 6000 40001080/60p----Fujifilm X-Pro2
Nikon D90« » APS-C 12.2 4288 2848720/24p22.712.597773Nikon D90
Panasonic FZ2500« » 1-inch 20.0 5472 36484K/30p----Panasonic FZ2500
Sony A7 III« » Full Frame 24.0 6000 40004K/30p25.014.7373096Sony A7 III
Sony A6300« » APS-C 24.0 6000 40004K/30p24.413.7143785Sony A6300
Sony A6500« » APS-C 24.0 6000 40004K/30p24.513.7140585Sony A6500
Sony RX10 III« » 1-inch 20.0 5472 36484K/30p23.112.647270Sony RX10 III
Sony RX100 V« » 1-inch 20.0 5472 36484K/30p22.812.458670Sony RX100 V
Sony RX10 II« » 1-inch 20.0 5472 36484K/30p23.012.653170Sony RX10 II
Sony RX10« » 1-inch 20.0 5472 36481080/60p22.912.647469Sony RX10

Many modern cameras are not only capable of taking still images, but also of capturing video footage. The RX10 IV indeed provides movie recording capabilities, while the 40D does not. The highest resolution format that the RX10 IV can use is 4K/30p.

 

Feature comparison: Sony RX10 IV vs Canon 40D

Beyond body and sensor, cameras can and do differ across a range of features. For example, the RX10 IV has an electronic viewfinder (2359k 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 adjacent table lists some of the other core features of the Sony RX10 IV and Canon 40D along with similar information for a selection of comparators. If needed, the dpreview camera hub, for example, contains further detail on the cameras' specs.

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)
Shutter
speed
(1/sec)
Shutter
flaps
(1/sec)
Build-in
Flash
(yes/no)
Build-in
Image
Stab
Camera
Model
Sony RX10 IV»2359 Y 3.0 1440 tilting Y 2000 24.0 Y Y Sony RX10 IV
Canon 40D«optical Y 3.0 230 fixed n 8000 6.5 Y n Canon 40D
Canon G1 X Mark III« »2360 n 3.0 1040 swivel Y 2000 9.0 Y Y Canon G1 X Mark III
Canon 50D« »optical Y 3.0 920 fixed n 8000 6.3 Y n Canon 50D
Canon 30D« »optical Y 2.5 230 fixed n 8000 5.0 Y n Canon 30D
Canon 20D« »optical Y 1.8 118 fixed n 8000 5.0 Y n Canon 20D
Canon 10D« »optical Y 1.8 118 fixed n 4000 3.0 Y n Canon 10D
Fujifilm X-Pro2« »2360 n 3.0 1620 fixed n 8000 8.0 n n Fujifilm X-Pro2
Nikon D90« »optical Y 3.0 920 fixed n 4000 4.5 Y n Nikon D90
Panasonic FZ2500« »2360 n 3.0 1040 swivel Y 4000 12.0 Y Y Panasonic FZ2500
Sony A7 III« »2359 n 3.0 922 tilting Y 8000 10.0 n Y Sony A7 III
Sony A6300« »2300 n 3.0 922 tilting n 4000 11.0 Y n Sony A6300
Sony A6500« »2300 n 3.0 922 tilting Y 4000 11.0 Y Y Sony A6500
Sony RX10 III« »2359 Y 3.0 1229 tilting n 2000 14.0 Y Y Sony RX10 III
Sony RX100 V« »2359 n 3.0 1229 tilting n 2000 24.0 Y Y Sony RX100 V
Sony RX10 II« »2359 Y 3.0 1229 tilting n 3200 14.0 Y Y Sony RX10 II
Sony RX10« »1440 Y 3.0 1229 tilting n 3200 10.0 Y Y Sony RX10

One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The RX10 IV has a touchscreen, while the 40D has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.

The RX10 IV writes its imaging data to SDXC or Memory Stick PRO Duo cards, while the 40D uses Compact Flash cards.

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
Sony RX10 IV»YstereomonoYYmicro2.0YY-Sony RX10 IV
Canon 40D«Y-----2.0---Canon 40D
Canon G1 X Mark III« »Ystereomono--micro2.0YYYCanon G1 X Mark III
Canon 50D« »Y----mini2.0---Canon 50D
Canon 30D« »Y-----2.0---Canon 30D
Canon 20D« »Y-----1.1---Canon 20D
Canon 10D« »Y-----1.1---Canon 10D
Fujifilm X-Pro2« »YstereomonoY-micro2.0Y--Fujifilm X-Pro2
Nikon D90« »Ymonomono--mini2.0---Nikon D90
Panasonic FZ2500« »YstereomonoYYmicro2.0Y--Panasonic FZ2500
Sony A7 III« »YstereomonoYYmicro3.1YYYSony A7 III
Sony A6300« »YstereomonoY-micro2.0YY-Sony A6300
Sony A6500« »YstereomonoY-micro2.0YY-Sony A6500
Sony RX10 III« »YstereomonoYYmicro2.0YY-Sony RX10 III
Sony RX100 V« »-stereomono--micro2.0YY-Sony RX100 V
Sony RX10 II« »YstereomonoYYmicro2.0YY-Sony RX10 II
Sony RX10« »YstereomonoYYmicro2.0YY-Sony RX10

The RX10 IV is a current model that online retailers, such as amazon, will have in stock. In contrast, the 40D has been discontinued (but it can be found pre-owned on eBay). As a replacement in the same line of cameras, the 40D was succeeded by the Canon 50D.

Review summary: Sony RX10 IV vs Canon 40D

So what is the bottom line? Is the Sony RX10 IV better than the Canon 40D or vice versa? A synthesis of the relative strong points of each of the models is listed below.

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Arguments in favor of the Sony Cyber-shot DSC-RX10 IV:

  • More detail: Offers more megapixels (20 vs 10.1MP) with a 41% higher linear resolution.
  • Broader imaging potential: Can record not only still images but also 4K/30p movies.
  • More framing info: Has an electronic viewfinder that displays shooting data.
  • More detailed LCD: Has a higher resolution rear screen (1440k vs 230k dots).
  • More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
  • Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
  • Faster burst: Shoots at higher frequency (24 vs 6.5 flaps/sec) to capture the decisive moment.
  • Ready to shoot: Comes with a build-in lens, while the 40D requires a separate lens.
  • More compact: Is smaller (133x94mm vs 146x108mm) and thus needs less room in the bag.
  • Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
  • Sharper images: Has hand-shake reducing image stabilization build-in.
  • Easier file upload: Has wifi build in for automatic backup or image transfer to the web.
  • Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
  • More modern: Reflects 10 years of technical progress since the 40D launch.

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Advantages of the Canon EOS 40D:

  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • Faster shutter: Has higher mechanical shutter speed (8000/sec vs 2000/sec) to freeze action.
  • More flexible: Makes it possible to change lenses and thus to use specialty optics.
  • Longer lasting: Gets more shots (750 versus 400) out of a single battery charge.
  • More heavily discounted: Has been around for much longer (launched in August 2007).

If the count of individual advantages (bullet points above) is taken as a guide, the RX10 IV is the clear winner of the match-up (14 : 5 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.

RX10 IV 14:05 40D

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 RX10 IV or the 40D 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 hands-on reviews by experts 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). You can find the full text of the reviews by clicking on the site logo in the table header.

Review Scores
  Camera
Model
cameralabs dpreview ephotozine imaging-resource photographyblog Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Camera
Model
Sony RX10 IV»Rec84/1004.5/5-5/5 Sep 2017 1,699 i i Sony RX10 IV
Canon 40D«HiRecHiRec4.5/5rev4.5/5 Aug 2007 1,299- i Canon 40D
Canon G1 X Mark III« »Rec79/1004.5/5-4.5/5 Oct 2017 1,299 i i Canon G1 X Mark III
Canon 50D« »HiRecHiRec4.5/55/54.5/5 Aug 2008 1,299- i Canon 50D
Canon 30D« »HiRecHiRecrevrev- Feb 2006 1,399- i Canon 30D
Canon 20D« »-HiRec-rev- Aug 2004 1,499- i Canon 20D
Canon 10D« »-HiRec-rev- Feb 2003 1,999- i Canon 10D
Fujifilm X-Pro2« »Rec83/1004.5/54.5/54.5/5 Jan 2016 1,699 i i Fujifilm X-Pro2
Nikon D90« »HiRecHiRec4/55/54.5/5 Aug 2008 1,299- i Nikon D90
Panasonic FZ2500« »Rec82/1004.5/54.5/55/5 Sep 2016 1,199 i i Panasonic FZ2500
Sony A7 III« »HiRec89/1005/55/55/5 Feb 2018 1,999 i i Sony A7 III
Sony A6300« »Rec85/1005/55/55/5 Feb 2016 999- i Sony A6300
Sony A6500« »HiRec85/1004.5/55/54.5/5 Oct 2016 1,399 i i Sony A6500
Sony RX10 III« »Rec84/1004.5/54.5/54.5/5 Mar 2016 1,499- i Sony RX10 III
Sony RX100 V« »HiRec83/1004/55/54.5/5 Oct 2016 999 i i Sony RX100 V
Sony RX10 II« »HiRec82/1004.5/54.5/54/5 Jun 2015 1,299- i Sony RX10 II
Sony RX10« »Rec80/1004.5/54.5/54.5/5 Oct 2013 1,299- i Sony RX10

Care should be taken when interpreting the review scores above, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. Hence, a score should always be seen in the context of the camera's market launch date and its price, 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.

 

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. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting. If the camera you are interested in is not available, please send me an email, and I will try to add information on that model to the database.

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