Canon 1D Mark III vs T8i
The Canon EOS-1D Mark III and the Canon EOS Rebel T8i (labelled Canon 850D in some countries) are two digital cameras that were revealed to the public, respectively, in February 2007 and February 2020. Both are DSLR (Digital Single Lens Reflex) cameras that are based on an APS-H (1D Mark III) and an APS-C (T8i) sensor. The 1D Mark III has a resolution of 10.1 megapixels, whereas the T8i 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-1D Mark III and the Canon EOS Rebel T8i? 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 side-by-side display below illustrates the physical size and weight of the Canon 1D Mark III and the Canon T8i. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All width, height and depth measures 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 T8i is considerably smaller (45 percent) than the Canon 1D Mark III. Moreover, the T8i is substantially lighter (55 percent) than the 1D Mark III. It is worth mentioning in this context that the 1D Mark III is splash and dust resistant, while the T8i 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. A larger imaging sensor (as in the 1D Mark III) will tend to go along with bigger and heavier lenses, while more compact options are available for the smaller-sensor camera (T8i). You can compare the optics available in the Canon EF Lens Catalog.
Concerning battery life, the 1D Mark III gets 2200 shots out of its LP-E4 battery, while the T8i can take 800 images on a single charge of its LP-E17 power pack. As can be seen in the images above, the 1D Mark III has a battery grip built in. This facilitates image-taking in portrait orientation and gives it additional battery power.
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 1D Mark III||156 mm||157 mm||80 mm||1155 g||2200||Y||Feb 2007||4,499|
|2.||Canon T8i||131 mm||103 mm||76 mm||515 g||800||n||Feb 2020||749|
|3.||Canon SL3||122 mm||93 mm||70 mm||449 g||1070||n||Apr 2019||599|
|4.||Canon 77D||131 mm||100 mm||76 mm||540 g||600||n||Feb 2017||899|
|5.||Canon T7i||131 mm||100 mm||76 mm||532 g||600||n||Feb 2017||749|
|6.||Canon 5DS R||152 mm||116 mm||76 mm||930 g||700||Y||Feb 2015||3,699|
|7.||Canon T6i||132 mm||101 mm||78 mm||555 g||440||n||Feb 2015||749|
|8.||Canon T6s||132 mm||101 mm||78 mm||565 g||440||n||Feb 2015||649|
|9.||Canon 5D Mark III||152 mm||116 mm||76 mm||950 g||950||Y||Mar 2012||3,499|
|10.||Canon 1D Mark IV||156 mm||157 mm||80 mm||1230 g||1500||Y||Oct 2009||4,999|
|11.||Canon 5D Mark II||152 mm||114 mm||75 mm||850 g||850||Y||Sep 2008||3,499|
|12.||Canon 1Ds Mark III||150 mm||160 mm||80 mm||1385 g||1800||Y||Aug 2007||7,999|
|13.||Canon 1D Mark II N||156 mm||158 mm||80 mm||1565 g||1200||Y||Aug 2005||3,999|
|14.||Canon 1D Mark II||156 mm||158 mm||80 mm||1535 g||1200||Y||Jan 2004||4,499|
|15.||Canon 1Ds||156 mm||158 mm||80 mm||1265 g||600||Y||Sep 2002||8,999|
|16.||Nikon D3||160 mm||157 mm||88 mm||1300 g||4300||Y||Aug 2007||4,999|
|17.||Nikon D2Xs||158 mm||150 mm||86 mm||1252 g||3800||Y||Jun 2006||4,699|
|Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.|
Any camera decision will obviously take relative prices into account. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The T8i was launched at a markedly lower price (by 83 percent) than the 1D Mark III, 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.
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. 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 Canon 1D Mark III features an APS-H sensor and the Canon T8i an APS-C sensor. The sensor area in the T8i is 37 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.3 and 1.6. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
Technology-wise, the T8i uses a more advanced image processing engine (DIGIC 8) than the 1D Mark III (DIGIC III), with benefits for noise reduction, color accuracy, and processing speed.
Despite having a smaller sensor, the T8i offers a higher resolution of 24 megapixels, compared with 10.1 MP of the 1D Mark III. 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 3.72μm versus 7.21μm for the 1D Mark III). However, it should be noted that the T8i is much more recent (by 12 years and 11 months) than the 1D Mark III, 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 Canon T8i implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the T8i 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 1D Mark III 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 T8i has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
The Canon EOS-1D Mark III has a native sensitivity range from ISO 100 to ISO 3200, which can be extended to ISO 50-6400. The corresponding ISO settings for the Canon EOS Rebel T8i are ISO 100 to ISO 25600, with the possibility to increase the ISO range to 100-51200.
For many cameras, data on sensor performance has been reported by DXO Mark. 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.
| DXO |
|1.||Canon 1D Mark III||APS-H||10.1||3888||2592||none||22.7||11.7||1078||71|
|6.||Canon 5DS R||Full Frame||50.3||8688||5792||1080/30p||24.6||12.4||2308||86|
|9.||Canon 5D Mark III||Full Frame||22.1||5760||3840||1080/30p||24.0||11.7||2293||81|
|10.||Canon 1D Mark IV||APS-H||16.0||4896||3264||1080/30p||22.8||12.0||1320||74|
|11.||Canon 5D Mark II||Full Frame||21.0||5616||3744||1080/30p||23.7||11.9||1815||79|
|12.||Canon 1Ds Mark III||Full Frame||21.0||5616||3744||none||24.0||12.0||1663||80|
|13.||Canon 1D Mark II N||APS-H||8.2||3504||2336||none||22.3||11.2||975||66|
|14.||Canon 1D Mark II||APS-H||8.2||3504||2336||none||22.3||11.1||1003||66|
|15.||Canon 1Ds||Full Frame||11.0||4064||2704||none||21.8||11.0||954||63|
|16.||Nikon D3||Full Frame||12.1||4256||2832||none||23.5||12.2||2290||81|
Many modern cameras are not only capable of taking still images, but can also record movies. The T8i indeed provides for movie recording, while the 1D Mark III does not. The highest resolution format that the T8i can use is 4K/24p.
Apart from body and sensor, cameras can and do differ across a variety of features. The 1D Mark III and the T8i 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 viewfinder in the 1D Mark III offers a wider field of view (100%) than the one in the T8i (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the 1D Mark III has a higher magnification (0.58x vs 0.51x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The following table reports on some other key feature differences and similarities of the Canon 1D Mark III, the Canon T8i, and comparable cameras.
|1.||Canon 1D Mark III||optical||Y||3.0||230||fixed||n||1/8000s||10.0||n||n|
|6.||Canon 5DS R||optical||Y||3.2||1040||fixed||n||1/8000s||5.0||n||n|
|9.||Canon 5D Mark III||optical||Y||3.2||1040||fixed||n||1/8000s||6.0||n||n|
|10.||Canon 1D Mark IV||optical||Y||3.0||920||fixed||n||1/8000s||10.0||n||n|
|11.||Canon 5D Mark II||optical||Y||3.0||920||fixed||n||1/8000s||3.9||n||n|
|12.||Canon 1Ds Mark III||optical||Y||3.0||230||fixed||n||1/8000s||5.0||n||n|
|13.||Canon 1D Mark II N||optical||Y||2.5||230||fixed||n||1/8000s||8.5||n||n|
|14.||Canon 1D Mark II||optical||Y||2.0||230||fixed||n||1/8000s||8.3||n||n|
One feature that is present on the 1D Mark III, but is missing on the T8i 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 T8i 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 1D Mark III does not have a selfie-screen.
The Canon T8i 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 1D Mark III writes its imaging data to Compact Flash or SDHC cards, while the T8i uses SDXC cards. The 1D Mark III features dual card slots, which can be very useful in case a memory card fails. In contrast, the T8i only has one slot. The T8i supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the 1D Mark III cannot take advantage of Ultra High Speed SD 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-1D Mark III and Canon EOS Rebel T8i and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
| WiFi |
| NFC |
|1.||Canon 1D Mark III||Y||-||-||-||-||-||2.0||-||-||-|
|6.||Canon 5DS R||Y||mono||mono||Y||-||mini||3.0||-||-||-|
|9.||Canon 5D Mark III||Y||mono||mono||Y||Y||mini||2.0||-||-||-|
|10.||Canon 1D Mark IV||Y||stereo||-||Y||-||mini||2.0||-||-||-|
|11.||Canon 5D Mark II||Y||mono||mono||Y||-||mini||2.0||-||-||-|
|12.||Canon 1Ds Mark III||Y||mono||-||-||-||-||2.0||-||-||-|
|13.||Canon 1D Mark II N||Y||-||-||-||-||-||1.1||-||-||-|
|14.||Canon 1D Mark II||Y||-||-||-||-||-||1.1||-||-||-|
It is notable that the T8i offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the 1D Mark III does not provide wifi capability.
Studio photographers will appreciate that the Canon 1D Mark III (unlike the T8i) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
The T8i is a recent model that features in the current product line-up of Canon. In contrast, the 1D Mark III has been discontinued (but can be found pre-owned on eBay). As a replacement in the same line of cameras, the 1D Mark III was succeeded by the Canon 1D Mark IV. 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 conclusions can be drawn? Is there a clear favorite between the Canon 1D Mark III and the Canon T8i? 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-1D Mark III:
- 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 (0.58x vs 0.51x).
- Easier setting verification: Features an LCD display on top to control shooting parameters.
- Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
- Faster burst: Shoots at higher frequency (10 vs 7.5 flaps/sec) to capture the decisive moment.
- More portrait friendly: Features an integrated vertical grip for easier portrait shooting.
- Longer lasting: Can take more shots (2200 versus 800) on a single battery charge.
- Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
- Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
- Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
- More heavily discounted: Has been available for much longer (launched in February 2007).
Reasons to prefer the Canon EOS Rebel T8i:
- More detail: Has more megapixels (24 vs 10.1MP), which boosts linear resolution by 54%.
- Better jpgs: Has a more modern image processing engine (DIGIC 8 vs DIGIC III).
- Broader imaging potential: Can capture not only stills but also 4K/24p video.
- Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
- 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.
- Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
- More compact: Is smaller (131x103mm vs 156x157mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight (by 640g or 55 percent) and is thus easier to take along.
- Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
- 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.
- Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
- More affordable: Was introduced into a lower priced category (83 percent cheaper at launch).
- More modern: Reflects 12 years and 11 months of technical progress since the 1D Mark III launch.
If the number of relative strengths (bullet points above) is taken as a guide, the T8i is the clear winner of the contest (17 : 11 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. 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 1D Mark III and the Canon T8i place the cameras among the top in their class? Find out in the latest Best DSLR Camera listing 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 remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the 1D Mark III or the T8i. 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 where reviews by experts come in. The following table reports the overall ratings of the cameras as published by some of the major camera review sites (amateurphotographer [AP], cameralabs [CL], 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 1D Mark III||..||..||..||..||..||Feb 2007||4,499|
|2.||Canon T8i||4.5/5||+||80/100||4/5||3.5/5||Feb 2020||749|
|3.||Canon SL3||..||o||79/100||4/5||4/5||Apr 2019||599|
|4.||Canon 77D||4.5/5||..||82/100||4.5/5||4/5||Feb 2017||899|
|5.||Canon T7i||4.5/5||..||80/100||4.5/5||4/5||Feb 2017||749|
|6.||Canon 5DS R||5/5||+||83/100||5/5||4.5/5||Feb 2015||3,699|
|7.||Canon T6i||5/5||..||75/100||4.5/5||4.5/5||Feb 2015||749|
|8.||Canon T6s||5/5||+||77/100||4.5/5||4.5/5||Feb 2015||649|
|9.||Canon 5D Mark III||..||+ +||82/100||4.5/5||4.5/5||Mar 2012||3,499|
|10.||Canon 1D Mark IV||5/5||..||89/100||..||..||Oct 2009||4,999|
|11.||Canon 5D Mark II||4/5||91/100||79/100||4/5||..||Sep 2008||3,499|
|12.||Canon 1Ds Mark III||..||..||+ +||4.5/5||..||Aug 2007||7,999|
|13.||Canon 1D Mark II N||..||..||..||..||..||Aug 2005||3,999|
|14.||Canon 1D Mark II||..||..||+ +||..||..||Jan 2004||4,499|
|15.||Canon 1Ds||..||..||+ +||..||..||Sep 2002||8,999|
|16.||Nikon D3||..||..||+ +||5/5||4.5/5||Aug 2007||4,999|
|17.||Nikon D2Xs||..||..||..||..||..||Jun 2006||4,699|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
Care should be taken when interpreting the review scores above, though. The ratings are only valid when referring to cameras in the same category and of the same age. 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, please note that some of the review sites have changed their methodology and reporting over time.
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.
Specifications: Canon 1D Mark III vs Canon T8i
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 1D Mark III||Canon T8i|
|Camera Type||Digital single lens reflex||Digital single lens reflex|
|Camera Lens||Canon EF mount lenses||Canon EF mount lenses|
|Launch Date||February 2007||February 2020|
|Launch Price||USD 4,499||USD 749|
|Sensor Specs||Canon 1D Mark III||Canon T8i|
|Sensor Format||APS-H Sensor||APS-C Sensor|
|Sensor Size||28.1 x 18.7 mm||22.3 x 14.9 mm|
|Sensor Area||525.47 mm2||332.27 mm2|
|Sensor Diagonal||33.8 mm||26.8 mm|
|Sensor Resolution||10.1 Megapixels||24 Megapixels|
|Image Resolution||3888 x 2592 pixels||6000 x 4000 pixels|
|Pixel Pitch||7.21 μm||3.72 μm|
|Pixel Density||1.92 MP/cm2||7.22 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||no Video||4K/24p Video|
|ISO Setting||100 - 3,200 ISO||100 - 25,600 ISO|
|ISO Boost||50 - 6,400 ISO||100 - 51,200 ISO|
|Image Processor||DIGIC III||DIGIC 8|
|DXO Sensor Quality (score)||71||..|
|DXO Color Depth (bits)||22.7||..|
|DXO Dynamic Range (EV)||11.7||..|
|DXO Low Light (ISO)||1078||..|
|Screen Specs||Canon 1D Mark III||Canon T8i|
|Viewfinder Type||Optical viewfinder||Optical viewfinder|
|Viewfinder Field of View||100%||95%|
|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||1040k dots|
|LCD Attachment||Fixed screen||Swivel screen|
|Touch Input||no Touchscreen||Touchscreen|
|Shooting Specs||Canon 1D Mark III||Canon T8i|
|Focus System||Phase-detect AF||Phase-detect AF|
|Manual Focusing Aid||no Peaking Feature||Focus Peaking|
|Max Shutter Speed (mechanical)||1/8000s||1/4000s|
|Continuous Shooting||10 shutter flaps/s||7.5 shutter flaps/s|
|Shutter Life Expectancy||300 000 actuations||100 000 actuations|
|Time-Lapse Photography||no Intervalometer||Intervalometer built-in|
|Fill Flash||no On-Board Flash||Build-in Flash|
|Storage Medium||CF or SDHC cards||SDXC cards|
|Second Storage Option||Dual card slots||Single card slot|
|UHS card support||no||UHS-I|
|Connectivity Specs||Canon 1D Mark III||Canon T8i|
|Studio Flash||PC Sync socket||no PC Sync|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||no HDMI||mini HDMI|
|Microphone Port||no MIC socket||External MIC port|
|Wifi Support||no Wifi||Wifi built-in|
|Bluetooth Support||no Bluetooth||Bluetooth built-in|
|Body Specs||Canon 1D Mark III||Canon T8i|
|Environmental Sealing||Weathersealed body||not weather sealed|
|Battery Life (CIPA)||2200 shots per charge||800 shots per charge|
156 x 157 x 80 mm
(6.1 x 6.2 x 3.1 in)
131 x 103 x 76 mm
(5.2 x 4.1 x 3.0 in)
|Camera Weight||1155 g (40.7 oz)||515 g (18.2 oz)|
Did you notice an error on this page? If so, please get in touch, so that we can correct the information.