Canon 400D vs Sigma fp
The Canon EOS 400D (called Canon XTi in some regions) and the Sigma fp are two digital cameras that were announced, respectively, in August 2006 and July 2019. The 400D is a DSLR, while the fp is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (400D) and a full frame (fp) sensor. The Canon has a resolution of 10.1 megapixels, whereas the Sigma provides 24 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 400D and the Sigma fp? 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 Sigma fp 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 Sigma fp is notably smaller (26 percent) than the Canon 400D. Moreover, the fp is markedly lighter (24 percent) than the 400D. It is noteworthy in this context that the fp is splash and dust-proof, while the 400D does not feature any corresponding weather-sealing.
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 fp can take 280 images on a single charge of its BP-51 power pack. The power pack in the fp 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. 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 400D||127 mm||84 mm||65 mm||556 g||370||n||Aug 2006||799||ebay.com|
|2.||Sigma fp||113 mm||70 mm||45 mm||422 g||280||Y||Jul 2019||1,899||amazon.com|
|3.||Canon 750D||132 mm||101 mm||78 mm||555 g||440||n||Feb 2015||749||ebay.com|
|4.||Canon 760D||132 mm||101 mm||78 mm||565 g||440||n||Feb 2015||649||ebay.com|
|5.||Canon 650D||133 mm||100 mm||79 mm||575 g||440||n||Jun 2012||849||ebay.com|
|6.||Canon 1100D||130 mm||100 mm||78 mm||495 g||700||n||Feb 2011||449||ebay.com|
|7.||Canon 550D||129 mm||98 mm||62 mm||530 g||440||n||Feb 2010||699||ebay.com|
|8.||Canon 500D||129 mm||98 mm||62 mm||520 g||400||n||Mar 2009||799||ebay.com|
|9.||Canon 450D||129 mm||98 mm||62 mm||524 g||500||n||Jan 2008||799||ebay.com|
|10.||Canon 40D||146 mm||108 mm||74 mm||822 g||750||n||Aug 2007||1,299||ebay.com|
|11.||Canon 350D||127 mm||94 mm||64 mm||540 g||400||n||Feb 2005||899||ebay.com|
|12.||Fujifilm X-Pro3||141 mm||83 mm||46 mm||497 g||440||Y||Oct 2019||1,799||amazon.com|
|13.||Nikon D780||144 mm||116 mm||76 mm||840 g||2260||Y||Jan 2020||2,299||amazon.com|
|14.||Nikon D40X||124 mm||94 mm||64 mm||522 g||520||n||Mar 2007||729||ebay.com|
|15.||Panasonic S5||133 mm||98 mm||82 mm||714 g||440||Y||Sep 2020||1,999||amazon.com|
|16.||Panasonic S1||149 mm||110 mm||97 mm||1017 g||400||Y||Feb 2019||2,499||amazon.com|
|17.||Panasonic S1H||151 mm||114 mm||110 mm||1052 g||400||Y||May 2019||3,999||amazon.com|
|Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.|
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 58 percent) than the fp, which puts it into a different market segment. 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. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.
The imaging sensor is at the core of digital cameras and its size is one of the main determining factors 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 associated with larger, more expensive camera bodies and lenses.
Of the two cameras under consideration, the Canon 400D features an APS-C sensor and the Sigma fp a full frame sensor. The sensor area in the fp is 161 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.
With 24MP, the fp offers a higher resolution than the 400D (10.1MP), but the fp nevertheless has larger individual pixels (pixel pitch of 5.98μm versus 5.71μm for the 400D) due to its larger sensor. Moreover, the fp is a much more recent model (by 12 years and 10 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. Coming back to sensor resolution, it should be mentioned that the fp has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The resolution advantage of the Sigma fp implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the fp for good quality output (200 dots per inch) amounts to 30 x 20 inches or 76.2 x 50.8 cm, for very good quality (250 dpi) 24 x 16 inches or 61 x 40.6 cm, and for excellent quality (300 dpi) 20 x 13.3 inches or 50.8 x 33.9 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 EOS 400D has a native sensitivity range from ISO 100 to ISO 1600. The corresponding ISO settings for the Sigma fp are ISO 100 to ISO 25600, with the possibility to increase the ISO range to 6-102400.
In terms of underlying technology, the 400D is build around a CMOS sensor, while the fp uses a BSI-CMOS imager. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.
Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. 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 adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.
|2.||Sigma fp||Full Frame||24.0||6000||4000||4K/30p||25.2||14.2||2829||94|
|13.||Nikon D780||Full Frame||24.3||6048||4024||4K/30p||25.3||14.3||2877||95|
|15.||Panasonic S5||Full Frame||24.0||6000||4000||4K/60p||25.1||14.5||2697||94|
|16.||Panasonic S1||Full Frame||24.0||6000||4000||4K/60p||25.2||14.5||3333||95|
|17.||Panasonic S1H||Full Frame||24.0||6000||4000||6K/30p||25.2||14.2||2805||94|
|Note: DXO values in italics represent estimates based on sensor size and age.|
Many modern cameras cannot only take still pictures, but also record videos. The fp indeed provides for movie recording, while the 400D does not. The highest resolution format that the fp can use is 4K/30p.
Apart from body and sensor, cameras can and do differ across a variety of features. For example, the 400D has an optical viewfinder, which can be very useful when shooting in bright sunlight. In contrast, the fp relies on live view and the rear LCD for framing. That said, the fp can be equipped with an optional viewfinder – the EVF-11. The adjacent table lists some of the other core features of the Canon 400D and Sigma fp along with similar information for a selection of comparators.
|1.||Canon 400D||optical||n||2.5 / 230||fixed||n||1/4000s||3.0/s||Y||n|
|2.||Sigma fp||optional||n||3.2 / 2100||fixed||Y||1/8000s||12.0/s||n||n|
|3.||Canon 750D||optical||n||3.0 / 1040||swivel||Y||1/4000s||5.0/s||Y||n|
|4.||Canon 760D||optical||Y||3.0 / 1040||swivel||Y||1/4000s||5.0/s||Y||n|
|5.||Canon 650D||optical||n||3.0 / 1040||swivel||Y||1/4000s||5.0/s||Y||n|
|6.||Canon 1100D||optical||n||2.7 / 230||fixed||n||1/4000s||3.0/s||Y||n|
|7.||Canon 550D||optical||n||3.0 / 1040||fixed||n||1/4000s||3.7/s||Y||n|
|8.||Canon 500D||optical||n||3.0 / 920||fixed||n||1/4000s||3.4/s||Y||n|
|9.||Canon 450D||optical||n||3.0 / 230||fixed||n||1/4000s||3.5/s||Y||n|
|10.||Canon 40D||optical||Y||3.0 / 230||fixed||n||1/8000s||6.5/s||Y||n|
|11.||Canon 350D||optical||n||1.8 / 115||fixed||n||1/4000s||3.0/s||Y||n|
|12.||Fujifilm X-Pro3||3690||n||3.0 / 1620||tilting||Y||1/8000s||8.0/s||n||n|
|13.||Nikon D780||optical||Y||3.2 / 2359||tilting||Y||1/8000s||12.0/s||n||n|
|14.||Nikon D40X||optical||n||2.5 / 230||fixed||n||1/4000s||3.0/s||Y||n|
|15.||Panasonic S5||2360||n||3.0 / 1840||swivel||Y||1/8000s||7.0/s||n||Y|
|16.||Panasonic S1||5760||Y||3.2 / 2100||full-flex||Y||1/8000s||9.0/s||n||Y|
|17.||Panasonic S1H||5760||Y||3.2 / 2330||swivel||Y||1/8000s||9.0/s||n||Y|
|Notes: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.|
One difference between the cameras concerns the presence of an on-board flash. The 400D has one, while the fp 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 reported shutter speed information refers to the use of the mechanical shutter. Yet, some cameras only have an electronic shutter, while others have an electronic shutter in addition to a mechanical one. In fact, the fp is one of those camera that have an additional electronic shutter, which makes completely silent shooting possible. However, this mode is less suitable for photographing moving objects (risk of rolling shutter) or shooting under artificial light sources (risk of flickering).
The Sigma fp 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 fp 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 Sigma fp and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
Mic / Speaker
|1.||Canon 400D||Y||- / -||-||-||-||2.0||-||-||-|
|2.||Sigma fp||Y||stereo / mono||Y||-||micro||3.1||-||-||-|
|3.||Canon 750D||Y||stereo / mono||Y||-||mini||2.0||Y||Y||-|
|4.||Canon 760D||Y||stereo / mono||Y||-||mini||2.0||Y||Y||-|
|5.||Canon 650D||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
|6.||Canon 1100D||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|7.||Canon 550D||Y||stereo / -||Y||-||mini||2.0||-||-||-|
|8.||Canon 500D||Y||mono / mono||-||-||mini||2.0||-||-||-|
|9.||Canon 450D||Y||- / -||-||-||mini||2.0||-||-||-|
|10.||Canon 40D||Y||- / -||-||-||-||2.0||-||-||-|
|11.||Canon 350D||Y||- / -||-||-||-||2.0||-||-||-|
|12.||Fujifilm X-Pro3||Y||stereo / mono||Y||-||-||3.1||Y||-||Y|
|13.||Nikon D780||Y||stereo / mono||Y||Y||mini||3.1||Y||-||Y|
|14.||Nikon D40X||Y||- / -||-||-||-||2.0||-||-||-|
|15.||Panasonic S5||Y||stereo / mono||Y||Y||micro||3.2||Y||-||Y|
|16.||Panasonic S1||Y||stereo / mono||Y||Y||full||3.1||Y||-||Y|
|17.||Panasonic S1H||Y||stereo / mono||Y||Y||full||3.1||Y||-||Y|
The fp is a recent model that features in the current product line-up of Sigma. 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 and Sigma websites.
So what conclusions can be drawn? Is there a clear favorite between the Canon 400D and the Sigma fp? Which camera is better? Below is a summary of the relative strengths of each of the two contestants.
Arguments in favor of the Canon EOS 400D:
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- Easier framing: Has an optical viewfinder for image composition and settings control.
- Longer lasting: Can take more shots (370 versus 280) 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 (58 percent cheaper at launch).
- More heavily discounted: Has been available for much longer (launched in August 2006).
Advantages of the Sigma fp:
- More detail: Has more megapixels (24 vs 10.1MP), which boosts linear resolution by 54%.
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- 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.
- Broader imaging potential: Can capture not only stills but also 4K/30p video.
- Larger screen: Has a bigger rear LCD (3.2" vs 2.5") for image review and settings control.
- More detailed LCD: Has a higher resolution rear screen (2100k vs 230k dots).
- Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
- Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
- Faster burst: Shoots at higher frequency (12 vs 3 flaps/sec) to capture the decisive moment.
- Less disturbing: Has an electronic shutter option for completely silent shooting.
- Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
- More compact: Is smaller (113x70mm vs 127x84mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight (by 134g or 24 percent) and is thus easier to take along.
- Easier travel charging: Can be conveniently charged via its USB port.
- Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
- More legacy lens friendly: Can use many non-native lenses via adapters.
- Faster data transfer: Supports a more advanced USB protocol (3.1 vs 2.0).
- More modern: Reflects 12 years and 10 months of technical progress since the 400D launch.
If the count of individual advantages (bullet points above) is taken as a guide, the fp is the clear winner of the contest (21 : 6 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 Sigma fp 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 comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it says little about, for example, the shooting experience and imaging performance of the 400D and the fp 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 where reviews by experts come in. 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 400D||..||+ +||..||+ +||o||4/5||Aug 2006||799||ebay.com|
|2.||Sigma fp||4/5||..||4/5||..||4/5||4.5/5||Jul 2019||1,899||amazon.com|
|3.||Canon 750D||5/5||..||..||75/100||4.5/5||4.5/5||Feb 2015||749||ebay.com|
|4.||Canon 760D||5/5||+||..||77/100||4.5/5||4.5/5||Feb 2015||649||ebay.com|
|5.||Canon 650D||4/5||+ +||..||77/100||4.5/5||4.5/5||Jun 2012||849||ebay.com|
|6.||Canon 1100D||..||80/100||..||69/100||4/5||4.5/5||Feb 2011||449||ebay.com|
|7.||Canon 550D||..||+ +||..||77/100||4/5||4.5/5||Feb 2010||699||ebay.com|
|8.||Canon 500D||..||+ +||..||74/100||4.5/5||4.5/5||Mar 2009||799||ebay.com|
|9.||Canon 450D||..||+ +||..||+ +||4/5||4.5/5||Jan 2008||799||ebay.com|
|10.||Canon 40D||..||+ +||..||+ +||4.5/5||4.5/5||Aug 2007||1,299||ebay.com|
|11.||Canon 350D||..||80/100||..||+ +||o||..||Feb 2005||899||ebay.com|
|12.||Fujifilm X-Pro3||4/5||+||4/5||85/100||4/5||..||Oct 2019||1,799||amazon.com|
|13.||Nikon D780||5/5||..||5/5||87/100||4.5/5||4.5/5||Jan 2020||2,299||amazon.com|
|14.||Nikon D40X||..||79/100||..||+ +||4/5||4/5||Mar 2007||729||ebay.com|
|15.||Panasonic S5||4.5/5||+ +||4.5/5||88/100||4.5/5||4.5/5||Sep 2020||1,999||amazon.com|
|16.||Panasonic S1||4.5/5||+ +||4.5/5||88/100||4.5/5||4/5||Feb 2019||2,499||amazon.com|
|17.||Panasonic S1H||..||..||4/5||90/100||..||..||May 2019||3,999||amazon.com|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
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. 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.
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. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.
- Canon 400D vs Canon SX730
- Canon 400D vs Leica Digilux 3
- Canon 400D vs Leica V-LUX 4
- Canon 400D vs Olympus E-M5 II
- Canon 400D vs Olympus E-PL8
- Canon 400D vs Sony A99 II
- Fujifilm XP130 vs Sigma fp
- Olympus XZ-1 vs Sigma fp
- Panasonic GF7 vs Sigma fp
- Sigma fp vs Sony A77
- Sigma fp vs Sony A7C
- Sigma fp vs Sony RX10 IV
Specifications: Canon 400D vs Sigma fp
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||Sigma fp|
|Camera Type||Digital single lens reflex||Mirrorless system camera|
|Camera Lens||Canon EF mount lenses||Leica L mount lenses|
|Launch Date||August 2006||July 2019|
|Launch Price||USD 799||USD 1,899|
|Sensor Specs||Canon 400D||Sigma fp|
|Sensor Format||APS-C Sensor||Full Frame Sensor|
|Sensor Size||22.2 x 14.8 mm||35.9 x 23.9 mm|
|Sensor Area||328.56 mm2||858.01 mm2|
|Sensor Diagonal||26.7 mm||43.1 mm|
|Sensor Resolution||10.1 Megapixels||24 Megapixels|
|Image Resolution||3888 x 2592 pixels||6000 x 4000 pixels|
|Pixel Pitch||5.71 μm||5.98 μm|
|Pixel Density||3.07 MP/cm2||2.80 MP/cm2|
|Moiré control||Anti-Alias filter||no AA filter|
|Movie Capability||no Video||4K/30p Video|
|ISO Setting||100 - 1,600 ISO||100 - 25,600 ISO|
|ISO Boost||no Enhancement||6 - 102,400 ISO|
|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||Sigma fp|
|Viewfinder Type||Optical viewfinder||Viewfinder optional|
|Viewfinder Field of View||95%|
|LCD Framing||Live View|
|Rear LCD Size||2.5inch||3.2inch|
|LCD Resolution||230k dots||2100k dots|
|LCD Attachment||Fixed screen||Fixed screen|
|Touch Input||no Touchscreen||Touchscreen|
|Shooting Specs||Canon 400D||Sigma fp|
|Focus System||Phase-detect AF||Contrast-detect AF|
|Manual Focusing Aid||no Peaking Feature||Focus Peaking|
|Max Shutter Speed (mechanical)||1/4000s||1/8000s|
|Continuous Shooting||3 shutter flaps/s||12 shutter flaps/s|
|Electronic Shutter||no E-Shutter||up to 1/8000s|
|Time-Lapse Photography||no Intervalometer||Intervalometer built-in|
|Fill Flash||Built-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||Sigma fp|
|USB Connector||USB 2.0||USB 3.1|
|HDMI Port||no HDMI||micro HDMI|
|Microphone Port||no MIC socket||External MIC port|
|Wifi Support||no Wifi||no Wifi|
|Body Specs||Canon 400D||Sigma fp|
|Environmental Sealing||not weather sealed||Weathersealed body|
|Battery Life (CIPA)||370 shots per charge||280 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)
113 x 70 x 45 mm
(4.4 x 2.8 x 1.8 in)
|Camera Weight||556 g (19.6 oz)||422 g (14.9 oz)|
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