Canon 400D vs Canon RP
The Canon EOS 400D (called Canon XTi in some regions) and the Canon EOS RP are two digital cameras that were officially introduced, respectively, in August 2006 and February 2019. The 400D is a DSLR, while the Canon RP is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (400D) and a full frame (Canon RP) sensor. The 400D has a resolution of 10.1 megapixels, whereas the Canon RP provides 26.2 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.
|Canon 400D||Canon RP|
|Digital single lens reflex||Mirrorless system camera|
|Canon EF mount lenses||Canon RF mount lenses|
|10.1 MP, APS-C Sensor||26.2 MP, Full Frame Sensor|
|no Video||4K/30p Video|
|ISO 100-1,600||ISO 100-40,000 (50 - 102,400)|
|Optical viewfinder||Electronic viewfinder (2360k dots)|
|2.5 LCD, 230k dots||3.0 LCD, 1040k dots|
|Fixed screen (not touch-sensitive)||Swivel touchscreen|
|3 shutter flaps per second||5 shutter flaps per second|
|370 shots per battery charge||250 shots per battery charge|
|127 x 84 x 65 mm, 556 g||133 x 85 x 70 mm, 485 g|
Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS 400D and the Canon EOS RP? 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 400D and the Canon RP are illustrated in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive perspectives from the front, the top, and the back are available. 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 Canon RP is notably larger (6 percent) than the Canon 400D. However, the Canon RP is markedly lighter (13 percent) than the 400D. In this context, it is worth noting that neither the 400D nor the Canon RP 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. Hence, you might want to study and compare the specifications of available lenses in order to get the full picture of the size and weight of the two camera systems.
Concerning battery life, the 400D gets 370 shots out of its NB-2LH battery, while the Canon RP can take 250 images on a single charge of its LP-E17 power pack. The power pack in the Canon RP can be charged via the USB port, which can be very convenient when travelling.
The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. If you would like to visualize and compare a different camera combination, just use the right or left arrows in the table to switch to the respective camera. Alternatively, you can also navigate to the CAM-parator app and make your selection from the full list of cameras there.
|Canon 400D||5.0 in||3.3 in||2.6 in||19.6 oz||370||n||Aug 2006||799|
|Canon RP||5.2 in||3.3 in||2.8 in||17.1 oz||250||n||Feb 2019||1,299|
|Canon T8i||5.2 in||4.1 in||3.0 in||18.2 oz||800||n||Feb 2020||749|
|Canon SL3||4.8 in||3.7 in||2.8 in||15.8 oz||1070||n||Apr 2019||599|
|Canon R||5.5 in||3.9 in||3.3 in||23.3 oz||370||Y||Sep 2018||2,299|
|Canon 77D||5.2 in||3.9 in||3.0 in||19.0 oz||600||n||Feb 2017||899|
|Canon M5||4.6 in||3.5 in||2.4 in||15.1 oz||295||n||Sep 2016||979|
|Canon 750D||5.2 in||4.0 in||3.1 in||19.6 oz||440||n||Feb 2015||749|
|Canon 760D||5.2 in||4.0 in||3.1 in||19.9 oz||440||n||Feb 2015||649|
|Canon 650D||5.2 in||3.9 in||3.1 in||20.3 oz||440||n||Jun 2012||849|
|Canon 1100D||5.1 in||3.9 in||3.1 in||17.5 oz||700||n||Feb 2011||449|
|Canon 550D||5.1 in||3.9 in||2.4 in||18.7 oz||440||n||Feb 2010||699|
|Canon 500D||5.1 in||3.9 in||2.4 in||18.3 oz||400||n||Mar 2009||799|
|Canon 450D||5.1 in||3.9 in||2.4 in||18.5 oz||500||n||Jan 2008||799|
|Canon 40D||5.7 in||4.3 in||2.9 in||29.0 oz||750||n||Aug 2007||1,299|
|Canon 350D||5.0 in||3.7 in||2.5 in||19.0 oz||400||n||Feb 2005||899|
|Nikon D40X||4.9 in||3.7 in||2.5 in||18.4 oz||520||n||Mar 2007||729|
Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
(1) Number of images that can be taken on a full battery charge according to the CIPA-standard; (2) Official announcement.
The price is, of course, an important factor in any camera decision. 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 400D was launched at a markedly lower price (by 38 percent) than the Canon RP, 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.
Of the two cameras under consideration, the Canon 400D features an APS-C sensor and the Canon RP a full frame sensor. The sensor area in the Canon RP is 162 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.6 and 1.0. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
Technology-wise, the Canon RP uses a more advanced image processing engine (DIGIC 8) than the 400D (DIGIC II), with benefits for noise reduction, color accuracy, and processing speed.
With 26.2MP, the Canon RP offers a higher resolution than the 400D (10.1MP), but the Canon RP nevertheless has marginally larger individual pixels (pixel pitch of 5.74μm versus 5.71μm for the 400D) due to its larger sensor. Moreover, the Canon RP is a much more recent model (by 12 years and 5 months) than the 400D, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixel-units.
The resolution advantage of the Canon RP implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the Canon RP for good quality output (200 dots per inch) amounts to 31.2 x 20.8 inches or 79.2 x 52.8 cm, for very good quality (250 dpi) 25 x 16.6 inches or 63.4 x 42.3 cm, and for excellent quality (300 dpi) 20.8 x 13.9 inches or 52.8 x 35.2 cm. The corresponding values for the Canon 400D 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 RP has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
The Canon EOS 400D has a native sensitivity range from ISO 100 to ISO 1600. The corresponding ISO settings for the Canon EOS RP are ISO 100 to ISO 40000, with the possibility to increase the ISO range to 50-102400.
Consistent information on actual sensor performance is available from DXO Mark for many cameras. This service is based on lab testing and assigns an overall score to each camera sensor, as well as ratings for dynamic range ("DXO Landscape"), color depth ("DXO Portrait"), and low-light sensitivity ("DXO Sports"). The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.
|Canon RP||Full Frame||26.2||6240||4160||4K/30p||..||..||..||..|
|Canon R||Full Frame||30.1||6720||4480||4K/30p||24.5||13.5||2742||89|
Many modern cameras cannot only take still pictures, but also record videos. The Canon RP indeed provides for movie recording, while the 400D does not. The highest resolution format that the Canon RP can use is 4K/30p.
Beyond body and sensor, cameras can and do differ across a range of features. For example, the Canon RP has an electronic viewfinder (2360k dots), while the 400D 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 viewfinder in the Canon RP offers a wider field of view (100%) than the one in the 400D (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the Canon RP has a higher magnification (0.70x vs 0.49x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The table below summarizes some of the other core capabilities of the Canon 400D and Canon RP in connection with corresponding information for a sample of similar cameras.
One difference between the cameras concerns the presence of an on-board flash. The 400D has one, while the Canon RP does not. While the built-in flash of the 400D is not very powerful, it can at times be useful as a fill-in light.The Canon RP 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 400D does not have a selfie-screen.
The Canon RP has an intervalometer built-in. This enables the photographer to capture time lapse sequences, such as flower blooming, a sunset or moon rise, without purchasing an external camera trigger and related software.
The 400D writes its imaging data to Compact Flash cards, while the Canon RP uses SDXC 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 400D and Canon EOS RP and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
| WiFi |
It is notable that the Canon RP offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the 400D does not provide wifi capability.
The Canon RP is a recent model that features in the current product line-up of Canon. In contrast, the 400D has been discontinued (but can be found pre-owned on eBay). As a replacement in the same line of cameras, the 400D was succeeded by the Canon 450D. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Canon website.
So what is the bottom line? Is there a clear favorite between the Canon 400D and the Canon RP? Which camera is better? A synthesis of the relative strong points of each of the models is listed below.
Advantages of the Canon EOS 400D:
- Brighter framing: Features an optical viewfinder for clear, lag-free composition.
- Longer lasting: Can take more shots (370 versus 250) on a single battery charge.
- Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
- More affordable: Was introduced into a lower priced category (38 percent cheaper at launch).
- More heavily discounted: Has been available for much longer (launched in August 2006).
Reasons to prefer the Canon EOS RP:
- More detail: Has more megapixels (26.2 vs 10.1MP), which boosts linear resolution by 60%.
- Better image quality: Is equipped with a larger and more technologically advanced sensor.
- Richer colors: The sensor size advantage translates into images with better, more accurate colors.
- More dynamic range: Larger sensor captures a wider spectrum of light and dark details.
- Better low-light sensitivity: Larger sensor produces good images even in poorly lit environments.
- Better jpgs: Has a more modern image processing engine (DIGIC 8 vs DIGIC II).
- Broader imaging potential: Can capture not only stills but also 4K/30p video.
- Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
- 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%).
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.70x vs 0.49x).
- Larger screen: Has a bigger rear LCD (3.0" vs 2.5") for image review and settings control.
- More detailed LCD: Has a higher resolution rear screen (1040k vs 230k dots).
- More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
- Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
- More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
- Faster burst: Shoots at higher frequency (5 vs 3 flaps/sec) to capture the decisive moment.
- Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
- Less heavy: Has a lower weight (by 71g or 13 percent) and is thus easier to take along.
- Easier travel charging: Can be conveniently charged via its USB port.
- More legacy lens friendly: Can use many non-native lenses via adapters.
- Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
- Easier wireless transfer: Supports Bluetooth for image sharing without cables.
- More modern: Reflects 12 years and 5 months of technical progress since the 400D launch.
If the number of relative strengths (bullet points above) is taken as a guide, the Canon RP is the clear winner of the contest (23 : 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 when reflecting and deciding 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 400D and the Canon RP place the cameras among the top in their class? Find out in the latest Best DSLR Camera and Best Mirrorless Interchangeable Lens 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 remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the 400D or the Canon RP. 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 table below provides a synthesis of the camera assessments of some of the best known photo-gear review sites (cameralabs, dpreview, ephotozine, imaging-resource, and photographyblog). 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.
|Canon 400D||+ +||+ +||o||4.5/5||4/5||Aug 2006||799|
|Canon RP||+||..||4.5/5||4.5/5||4/5||Feb 2019||1,299|
|Canon T8i||..||..||..||..||..||Feb 2020||749|
|Canon SL3||o||79/100||4/5||..||4/5||Apr 2019||599|
|Canon R||o||79/100||4.5/5||4/5||4/5||Sep 2018||2,299|
|Canon 77D||..||82/100||4.5/5||4.5/5||4/5||Feb 2017||899|
|Canon M5||+||82/100||4/5||4.5/5||4/5||Sep 2016||979|
|Canon 750D||..||75/100||4.5/5||4.5/5||4.5/5||Feb 2015||749|
|Canon 760D||+||77/100||4.5/5||4.5/5||4.5/5||Feb 2015||649|
|Canon 650D||+ +||77/100||4.5/5||4.5/5||4.5/5||Jun 2012||849|
|Canon 1100D||80/100||69/100||4/5||4/5||4.5/5||Feb 2011||449|
|Canon 550D||+ +||77/100||4/5||5/5||4.5/5||Feb 2010||699|
|Canon 500D||+ +||74/100||4.5/5||5/5||4.5/5||Mar 2009||799|
|Canon 450D||+ +||+ +||4/5||5/5||4.5/5||Jan 2008||799|
|Canon 40D||+ +||+ +||4.5/5||o||4.5/5||Aug 2007||1,299|
|Canon 350D||80/100||+ +||o||o||..||Feb 2005||899|
|Nikon D40X||79/100||+ +||4/5||o||4/5||Mar 2007||729|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
The review scores listed above should be treated with care, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and comparisons of ratings among very different cameras or across long time periods 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? If you would like to see a different side-by-side camera review, just make a corresponding selection in the search boxes below. As an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.
Specifications: Canon 400D vs Canon RP
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 400D||Canon RP|
|Camera Type||Digital single lens reflex||Mirrorless system camera|
|Camera Lens||Canon EF mount lenses||Canon RF mount lenses|
|Launch Date||August 2006||February 2019|
|Launch Price||USD 799||USD 1,299|
|Sensor Specs||Canon 400D||Canon RP|
|Sensor Format||APS-C Sensor||Full Frame Sensor|
|Sensor Size||22.2 x 14.8 mm||35.9 x 24.0 mm|
|Sensor Area||328.56 mm2||861.6 mm2|
|Sensor Diagonal||26.7 mm||43.2 mm|
|Sensor Resolution||10.1 Megapixels||26.2 Megapixels|
|Image Resolution||3888 x 2592 pixels||6240 x 4160 pixels|
|Pixel Pitch||5.71 μm||5.74 μm|
|Pixel Density||3.07 MP/cm2||3.01 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||no Video||4K/30p Video|
|ISO Setting||100 - 1,600 ISO||100 - 40,000 ISO|
|ISO Boost||no Enhancement||50 - 102,400 ISO|
|Image Processor||DIGIC II||DIGIC 8|
|DXO Sensor Quality (score)||62||..|
|DXO Color Depth (bits)||22.1||..|
|DXO Dynamic Range (EV)||11.0||..|
|DXO Low Light (ISO)||664||..|
|Screen Specs||Canon 400D||Canon RP|
|Viewfinder Type||Optical viewfinder||Electronic viewfinder|
|Viewfinder Field of View||95%||100%|
|Viewfinder Resolution||2360k dots|
|LCD Framing||Live View|
|Rear LCD Size||2.5inch||3.0inch|
|LCD Resolution||230k dots||1040k dots|
|LCD Attachment||Fixed screen||Swivel screen|
|Touch Input||no Touchscreen||Touchscreen|
|Shooting Specs||Canon 400D||Canon RP|
|Focus System||Phase-detect AF||On-Sensor Phase-detect|
|Continuous Shooting||3 shutter flaps/s||5 shutter flaps/s|
|Shutter Life Expectancy||50 000 actuations||100 000 actuations|
|Time-Lapse Photography||no Intervalometer||Intervalometer built-in|
|Fill Flash||Build-in Flash||no On-Board Flash|
|Storage Medium||CF cards||SDXC cards|
|Second Storage Option||Single card slot||Single card slot|
|Connectivity Specs||Canon 400D||Canon RP|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||no HDMI||micro HDMI|
|Microphone Port||no MIC socket||External MIC port|
|Headphone Socket||no Headphone port||Headphone port|
|Wifi Support||no Wifi||Wifi built-in|
|Bluetooth Support||no Bluetooth||Bluetooth built-in|
|Body Specs||Canon 400D||Canon RP|
|Battery Life (CIPA)||370 shots per charge||250 shots per charge|
|In-Camera Charging||no USB charging||USB charging|
127 x 84 x 65 mm
(5.0 x 3.3 x 2.6 in)
133 x 85 x 70 mm
(5.2 x 3.3 x 2.8 in)
|Camera Weight||556 g (19.6 oz)||485 g (17.1 oz)|
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