Canon 1D Mark III vs 300D
The Canon EOS-1D Mark III and the Canon EOS 300D (labelled Canon Rebel in some countries) are two digital cameras that were announced, respectively, in February 2007 and August 2003. Both are DSLR (Digital Single Lens Reflex) cameras that are based on an APS-H (1D Mark III) and an APS-C (300D) sensor. The 1D Mark III has a resolution of 10.1 megapixels, whereas the 300D provides 6.3 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 300D? 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 300D. The two cameras are presented according to their relative size. Three consecutive perspectives from the front, the top, and the back are available. 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 300D is considerably smaller (43 percent) than the Canon 1D Mark III. Moreover, the 300D is substantially lighter (44 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 300D 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 (300D). 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 300D can take 400 images on a single charge of its BP-511 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. In order to provide similar functionality for the 300D, Canon provides the BG-E1 vertical grip as an optional accessory (see here on eBay).
The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. If you want to switch the focus of the display and review another camera pair, you can move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.
|1.||Canon 1D Mark III||156 mm||157 mm||80 mm||1155 g||2200||Y||Feb 2007||4,499|
|2.||Canon 300D||142 mm||99 mm||72 mm||649 g||400||n||Aug 2003||899|
|3.||Canon 5DS R||152 mm||116 mm||76 mm||930 g||700||Y||Feb 2015||3,699|
|4.||Canon 5D Mark III||152 mm||116 mm||76 mm||950 g||950||Y||Mar 2012||3,499|
|5.||Canon 650D||133 mm||100 mm||79 mm||575 g||440||n||Jun 2012||849|
|6.||Canon 1D Mark IV||156 mm||157 mm||80 mm||1230 g||1500||Y||Oct 2009||4,999|
|7.||Canon 5D Mark II||152 mm||114 mm||75 mm||850 g||850||Y||Sep 2008||3,499|
|8.||Canon 1Ds Mark III||150 mm||160 mm||80 mm||1385 g||1800||Y||Aug 2007||7,999|
|9.||Canon 400D||127 mm||84 mm||65 mm||556 g||370||n||Aug 2006||799|
|10.||Canon 1D Mark II N||156 mm||158 mm||80 mm||1565 g||1200||Y||Aug 2005||3,999|
|11.||Canon 350D||127 mm||94 mm||64 mm||540 g||400||n||Feb 2005||899|
|12.||Canon 1D Mark II||156 mm||158 mm||80 mm||1535 g||1200||Y||Jan 2004||4,499|
|13.||Canon 20D||144 mm||106 mm||72 mm||770 g||700||n||Aug 2004||1,499|
|14.||Canon 10D||150 mm||107 mm||75 mm||850 g||500||n||Feb 2003||1,999|
|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.|
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. The 300D was launched at a markedly lower price (by 80 percent) than the 1D Mark III, 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. 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. 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 are more costly to manufacture and tend to 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 300D an APS-C sensor. The sensor area in the 300D is 35 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.
In terms of chip-set technology, the 1D Mark III uses a more advanced image processing engine (DIGIC III) than the 300D (DIGIC), with benefits for noise reduction, color accuracy, and processing speed.
With 10.1MP, the 1D Mark III offers a higher resolution than the 300D (6.3MP), but the 1D Mark III has smaller individual pixels (pixel pitch of 7.21μm versus 7.38μm for the 300D). However, the 1D Mark III is a much more recent model (by 3 years and 6 months) than the 300D, and its sensor will have benefitted from technological advances during this time that enhance the light gathering capacity of its pixels.
The resolution advantage of the Canon 1D Mark III implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the 1D Mark III for good quality output (200 dots per inch) amounts to 19.4 x 13 inches or 49.4 x 32.9 cm, for very good quality (250 dpi) 15.6 x 10.4 inches or 39.5 x 26.3 cm, and for excellent quality (300 dpi) 13 x 8.6 inches or 32.9 x 21.9 cm. The corresponding values for the Canon 300D are 15.4 x 10.2 inches or 39 x 26 cm for good quality, 12.3 x 8.2 inches or 31.2 x 20.8 cm for very good quality, and 10.2 x 6.8 inches or 26 x 17.3 cm for excellent quality prints.
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 300D are ISO 100 to ISO 1600 (no boost).
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. Of the two cameras under review, the 1D Mark III provides substantially higher image quality than the 300D, with an overall score that is 16 points higher. This advantage is based on 1.7 bits higher color depth, 0.9 EV in additional dynamic range, and 1 stops in additional low light sensitivity. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.
|1.||Canon 1D Mark III||APS-H||10.1||3888||2592||none||22.7||11.7||1078||71|
|3.||Canon 5DS R||Full Frame||50.3||8688||5792||1080/30p||24.6||12.4||2308||86|
|4.||Canon 5D Mark III||Full Frame||22.1||5760||3840||1080/30p||24.0||11.7||2293||81|
|6.||Canon 1D Mark IV||APS-H||16.0||4896||3264||1080/30p||22.8||12.0||1320||74|
|7.||Canon 5D Mark II||Full Frame||21.0||5616||3744||1080/30p||23.7||11.9||1815||79|
|8.||Canon 1Ds Mark III||Full Frame||21.0||5616||3744||none||24.0||12.0||1663||80|
|10.||Canon 1D Mark II N||APS-H||8.2||3504||2336||none||22.3||11.2||975||66|
|12.||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|
Apart from body and sensor, cameras can and do differ across a variety of features. The 1D Mark III and the 300D 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 300D (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 0.55x), 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 1D Mark III and Canon 300D in connection with corresponding information for a sample of similar cameras.
|1.||Canon 1D Mark III||optical||Y||3.0 / 230||fixed||n||1/8000s||10.0||n||n|
|2.||Canon 300D||optical||n||1.8 / 118||fixed||n||1/4000s||2.5||Y||n|
|3.||Canon 5DS R||optical||Y||3.2 / 1040||fixed||n||1/8000s||5.0||n||n|
|4.||Canon 5D Mark III||optical||Y||3.2 / 1040||fixed||n||1/8000s||6.0||n||n|
|5.||Canon 650D||optical||n||3.0 / 1040||swivel||Y||1/4000s||5.0||Y||n|
|6.||Canon 1D Mark IV||optical||Y||3.0 / 920||fixed||n||1/8000s||10.0||n||n|
|7.||Canon 5D Mark II||optical||Y||3.0 / 920||fixed||n||1/8000s||3.9||n||n|
|8.||Canon 1Ds Mark III||optical||Y||3.0 / 230||fixed||n||1/8000s||5.0||n||n|
|9.||Canon 400D||optical||n||2.5 / 230||fixed||n||1/4000s||3.0||Y||n|
|10.||Canon 1D Mark II N||optical||Y||2.5 / 230||fixed||n||1/8000s||8.5||n||n|
|11.||Canon 350D||optical||n||1.8 / 115||fixed||n||1/4000s||3.0||Y||n|
|12.||Canon 1D Mark II||optical||Y||2.0 / 230||fixed||n||1/8000s||8.3||n||n|
|13.||Canon 20D||optical||Y||1.8 / 118||fixed||n||1/8000s||5.0||Y||n|
|14.||Canon 10D||optical||Y||1.8 / 118||fixed||n||1/4000s||3.0||Y||n|
|15.||Canon 1Ds||optical||Y||2.0 / 120||fixed||n||1/8000s||3.0||n||n|
|16.||Nikon D3||optical||Y||3.0 / 922||fixed||n||1/8000s||11.0||n||n|
|17.||Nikon D2Xs||optical||Y||2.5 / 230||fixed||n||1/8000s||5.0||n||n|
One feature that is present on the 1D Mark III, but is missing on the 300D 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 1D Mark III writes its imaging data to Compact Flash or SDHC cards, while the 300D uses Compact Flash cards. The 1D Mark III features dual card slots, which can be very useful in case a memory card fails. In contrast, the 300D only has one slot.
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 300D and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
Mic / Speaker
|1.||Canon 1D Mark III||Y||- / -||-||-||-||2.0||-||-||-|
|2.||Canon 300D||Y||- / -||-||-||-||1.1||-||-||-|
|3.||Canon 5DS R||Y||mono / mono||Y||-||mini||3.0||-||-||-|
|4.||Canon 5D Mark III||Y||mono / mono||Y||Y||mini||2.0||-||-||-|
|5.||Canon 650D||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
|6.||Canon 1D Mark IV||Y||stereo / -||Y||-||mini||2.0||-||-||-|
|7.||Canon 5D Mark II||Y||mono / mono||Y||-||mini||2.0||-||-||-|
|8.||Canon 1Ds Mark III||Y||mono / -||-||-||-||2.0||-||-||-|
|9.||Canon 400D||Y||- / -||-||-||-||2.0||-||-||-|
|10.||Canon 1D Mark II N||Y||- / -||-||-||-||1.1||-||-||-|
|11.||Canon 350D||Y||- / -||-||-||-||2.0||-||-||-|
|12.||Canon 1D Mark II||Y||- / -||-||-||-||1.1||-||-||-|
|13.||Canon 20D||Y||- / -||-||-||-||1.1||-||-||-|
|14.||Canon 10D||Y||- / -||-||-||-||1.1||-||-||-|
|15.||Canon 1Ds||Y||- / -||-||-||-||FW||-||-||-|
|16.||Nikon D3||Y||- / -||-||-||mini||2.0||-||-||-|
|17.||Nikon D2Xs||Y||- / -||-||-||-||2.0||-||-||-|
Studio photographers will appreciate that the Canon 1D Mark III (unlike the 300D) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
Both the 1D Mark III and the 300D have been discontinued, but can regularly be found used on eBay. The 300D was replaced by the Canon 350D, while the 1D Mark III was followed 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 is the bottom line? Which of the two cameras – the Canon 1D Mark III or the Canon 300D – has the upper hand? Is one clearly better than the other? Below is a summary of the relative strengths of each of the two contestants.
Advantages of the Canon EOS-1D Mark III:
- More detail: Offers more megapixels (10.1 vs 6.3MP) with a 27% higher linear resolution.
- Better image quality: Scores substantially higher (16 points) in the DXO overall assessment.
- Richer colors: Generates images with noticeably better colors (1.7 bits more color depth).
- More dynamic range: Captures a larger spectrum of light and dark details (0.9 EV of extra DR).
- Better low-light sensitivity: Requires less light for good images (1 stops ISO advantage).
- Better jpgs: Has a more modern image processing engine (DIGIC III vs DIGIC).
- 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 0.55x).
- Easier setting verification: Features an LCD display on top to control shooting parameters.
- Larger screen: Has a bigger rear LCD (3.0" vs 1.8") for image review and settings control.
- More detailed LCD: Has a higher resolution rear screen (230k vs 118k dots).
- Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
- Faster burst: Shoots at higher frequency (10 vs 2.5 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 400) on a single battery charge.
- Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
- Faster data transfer: Supports a more advanced USB protocol (2.0 vs 1.1).
- 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 modern: Reflects 3 years and 6 months of technical progress since the 300D launch.
Reasons to prefer the Canon EOS 300D:
- More compact: Is smaller (142x99mm vs 156x157mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight (by 506g or 44 percent) and is thus easier to take along.
- Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
- More affordable: Was introduced into a lower priced category (80 percent cheaper at launch).
- More heavily discounted: Has been around for much longer (launched in August 2003).
If the count of individual advantages (bullet points above) is taken as a guide, the 1D Mark III is the clear winner of the match-up (20 : 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 1D Mark III and the Canon 300D 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 technical specifications can provide a useful overview of the capabilities of different cameras, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the 1D Mark III or the 300D. User reviews that are available, for instance, at amazon can sometimes shed light on these issues, but such feedback is all too often partial, inconsistent, and inaccurate.
This is why expert reviews are important. The following table reports the overall ratings of the cameras as published by some of the major 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 1D Mark III||..||..||..||..||..||..||Feb 2007||4,499|
|2.||Canon 300D||..||..||..||+ +||..||..||Aug 2003||899|
|3.||Canon 5DS R||5/5||+||..||83/100||5/5||4.5/5||Feb 2015||3,699|
|4.||Canon 5D Mark III||..||+ +||..||82/100||4.5/5||4.5/5||Mar 2012||3,499|
|5.||Canon 650D||4/5||+ +||..||77/100||4.5/5||4.5/5||Jun 2012||849|
|6.||Canon 1D Mark IV||5/5||..||..||89/100||..||..||Oct 2009||4,999|
|7.||Canon 5D Mark II||4/5||91/100||..||79/100||4/5||..||Sep 2008||3,499|
|8.||Canon 1Ds Mark III||..||..||..||+ +||4.5/5||..||Aug 2007||7,999|
|9.||Canon 400D||..||+ +||..||+ +||o||4/5||Aug 2006||799|
|10.||Canon 1D Mark II N||..||..||..||..||..||..||Aug 2005||3,999|
|11.||Canon 350D||..||80/100||..||+ +||o||..||Feb 2005||899|
|12.||Canon 1D Mark II||..||..||..||+ +||..||..||Jan 2004||4,499|
|13.||Canon 20D||..||..||..||+ +||..||..||Aug 2004||1,499|
|14.||Canon 10D||..||..||..||+ +||..||..||Feb 2003||1,999|
|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.|
The above review scores should be interpreted 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 comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. It should also be noted that some of the review sites have over time altered the way they render their verdicts.
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 1D Mark III vs Canon 20D
- Canon 1D Mark III vs Canon R6
- Canon 1D Mark III vs Nikon D5500
- Canon 1D Mark III vs Ricoh GR II
- Canon 1D Mark III vs Sony A77
- Canon 1D Mark III vs Sony ZV-E10
- Canon 300D vs Canon SX730
- Canon 300D vs Fujifilm X-A7
- Canon 300D vs Leica X Vario
- Canon 300D vs Nikon D5100
- Canon 300D vs Olympus E-400
- Canon 300D vs Panasonic L10
Specifications: Canon 1D Mark III vs Canon 300D
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 300D|
|Camera Type||Digital single lens reflex||Digital single lens reflex|
|Camera Lens||Canon EF mount lenses||Canon EF mount lenses|
|Launch Date||February 2007||August 2003|
|Launch Price||USD 4,499||USD 899|
|Sensor Specs||Canon 1D Mark III||Canon 300D|
|Sensor Format||APS-H Sensor||APS-C Sensor|
|Sensor Size||28.1 x 18.7 mm||22.7 x 15.1 mm|
|Sensor Area||525.47 mm2||342.77 mm2|
|Sensor Diagonal||33.8 mm||27.3 mm|
|Sensor Resolution||10.1 Megapixels||6.3 Megapixels|
|Image Resolution||3888 x 2592 pixels||3072 x 2048 pixels|
|Pixel Pitch||7.21 μm||7.38 μm|
|Pixel Density||1.92 MP/cm2||1.84 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||no Video||no Video|
|ISO Setting||100 - 3,200 ISO||100 - 1,600 ISO|
|ISO Boost||50 - 6,400 ISO||no Enhancement|
|Image Processor||DIGIC III||DIGIC|
|DXO Sensor Quality (score)||71||55|
|DXO Color Depth (bits)||22.7||21.0|
|DXO Dynamic Range (EV)||11.7||10.8|
|DXO Low Light (ISO)||1078||544|
|Screen Specs||Canon 1D Mark III||Canon 300D|
|Viewfinder Type||Optical viewfinder||Optical viewfinder|
|Viewfinder Field of View||100%||95%|
|Top-Level Screen||Control Panel||no Top Display|
|LCD Framing||Live View|
|Rear LCD Size||3.0inch||1.8inch|
|LCD Resolution||230k dots||118k dots|
|LCD Attachment||Fixed screen||Fixed screen|
|Shooting Specs||Canon 1D Mark III||Canon 300D|
|Focus System||Phase-detect AF||Phase-detect AF|
|Continuous Shooting||10 shutter flaps/s||2.5 shutter flaps/s|
|Shutter Life Expectancy||300 000 actuations||50 000 actuations|
|Fill Flash||no On-Board Flash||Built-in Flash|
|Storage Medium||CF or SDHC cards||CF cards|
|Second Storage Option||Dual card slots||Single card slot|
|Connectivity Specs||Canon 1D Mark III||Canon 300D|
|Studio Flash||PC Sync socket||no PC Sync|
|USB Connector||USB 2.0||USB 1.1|
|HDMI Port||no HDMI||no HDMI|
|Wifi Support||no Wifi||no Wifi|
|Body Specs||Canon 1D Mark III||Canon 300D|
|Environmental Sealing||Weathersealed body||not weather sealed|
|Battery Life (CIPA)||2200 shots per charge||400 shots per charge|
156 x 157 x 80 mm
(6.1 x 6.2 x 3.1 in)
142 x 99 x 72 mm
(5.6 x 3.9 x 2.8 in)
|Camera Weight||1155 g (40.7 oz)||649 g (22.9 oz)|
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