Canon 10D vs Panasonic G3
The Canon EOS 10D and the Panasonic Lumix DMC-G3 are two digital cameras that were officially introduced, respectively, in February 2003 and May 2011. The 10D is a DSLR, while the G3 is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (10D) and a Four Thirds (G3) sensor. The Canon has a resolution of 6.3 megapixels, whereas the Panasonic provides 15.8 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 10D and the Panasonic Lumix DMC-G3? 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 10D and the Panasonic G3 are illustrated in the side-by-side display below. 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 dimensions are rounded to the nearest millimeter.
The G3 can be obtained in four different colors (black, brown, red, white), while the 10D is only available in black.
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Panasonic G3 is considerably smaller (40 percent) than the Canon 10D. Moreover, the G3 is substantially lighter (60 percent) than the 10D. In this context, it is worth noting that neither the 10D nor the G3 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. A larger imaging sensor will tend to go along with bigger and heavier lenses, although exceptions exist. You can compare the optics available for the two cameras in the Canon EF Lens Catalog (10D) and the Micro Four Thirds Lens Catalog (G3). Mirrorless cameras, such as the G3, have moreover the advantage that they can use many lenses from other systems via adapters, as they have a relatively short flange to focal plane distance.
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 10D||150 mm||107 mm||75 mm||850 g||500||n||Feb 2003||1,999|
|2.||Panasonic G3||115 mm||84 mm||47 mm||336 g||270||n||May 2011||599|
|3.||Canon 7D II||149 mm||112 mm||78 mm||910 g||670||Y||Sep 2014||1,799|
|4.||Canon 70D||139 mm||104 mm||79 mm||755 g||920||Y||Jul 2013||1,199|
|5.||Canon 60D||145 mm||106 mm||79 mm||755 g||1100||Y||Aug 2010||1,399|
|6.||Canon 7D||148 mm||111 mm||74 mm||860 g||800||Y||Sep 2009||1,699|
|7.||Canon 40D||146 mm||108 mm||74 mm||822 g||750||n||Aug 2007||1,299|
|8.||Canon 30D||144 mm||106 mm||74 mm||785 g||750||n||Feb 2006||1,399|
|9.||Canon 20D||144 mm||106 mm||72 mm||770 g||700||n||Aug 2004||1,499|
|10.||Canon 300D||142 mm||99 mm||72 mm||649 g||400||n||Aug 2003||899|
|11.||Canon D60||150 mm||107 mm||75 mm||855 g||620||n||Feb 2002||2,999|
|12.||Nikon D100||144 mm||116 mm||81 mm||780 g||370||n||Feb 2002||1,999|
|13.||Panasonic G6||122 mm||85 mm||71 mm||390 g||340||n||Apr 2013||599|
|14.||Panasonic G5||120 mm||83 mm||71 mm||396 g||320||n||Jul 2012||599|
|15.||Panasonic GX1||116 mm||68 mm||39 mm||318 g||320||n||Nov 2011||699|
|16.||Panasonic G10||124 mm||84 mm||74 mm||388 g||380||n||Mar 2010||499|
|17.||Panasonic G2||124 mm||84 mm||74 mm||428 g||360||n||Mar 2010||599|
|Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.|
Any camera decision will naturally be influenced heavily by the price. The manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The G3 was launched at a markedly lower price (by 70 percent) than the 10D, 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.
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 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 are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.
Of the two cameras under consideration, the Canon 10D features an APS-C sensor and the Panasonic G3 a Four Thirds sensor. The sensor area in the G3 is 34 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.6 and 2.0. The sensor in the 10D has a native 3:2 aspect ratio, while the one in the G3 offers a 4:3 aspect.
Despite having a smaller sensor, the G3 offers a higher resolution of 15.8 megapixels, compared with 6.3 MP of the 10D. 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 3.77μm versus 7.38μm for the 10D). However, it should be noted that the G3 is much more recent (by 8 years and 2 months) than the 10D, 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 Panasonic G3 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the G3 for good quality output (200 dots per inch) amounts to 23 x 17.2 inches or 58.3 x 43.8 cm, for very good quality (250 dpi) 18.4 x 13.8 inches or 46.7 x 35 cm, and for excellent quality (300 dpi) 15.3 x 11.5 inches or 38.9 x 29.2 cm. The corresponding values for the Canon 10D 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 10D has a native sensitivity range from ISO 100 to ISO 3200. The corresponding ISO settings for the Panasonic Lumix DMC-G3 are ISO 160 to ISO 6400 (no boost).
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 Overall DXO ratings for the two cameras under consideration are close, suggesting that they provide similar imaging performance. 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.||Panasonic G3||Four Thirds||15.8||4592||3448||1080/60i||21.0||10.6||667||56|
|3.||Canon 7D II||APS-C||20.0||5472||3648||1080/60p||22.4||11.8||1082||70|
|13.||Panasonic G6||Four Thirds||15.9||4608||3456||1080/60p||21.3||11.5||639||61|
|14.||Panasonic G5||Four Thirds||15.9||4608||3456||1080/60p||22.3||11.9||643||66|
|15.||Panasonic GX1||Four Thirds||15.8||4592||3448||1080/60p||20.8||10.6||703||55|
|16.||Panasonic G10||Four Thirds||12.0||4000||3000||720/30p||21.2||10.1||411||52|
|17.||Panasonic G2||Four Thirds||12.0||4000||3000||720/30p||21.2||10.3||493||53|
|Note: DXO values in italics represent estimates based on sensor size and age.|
Many modern cameras are not only capable of taking still images, but can also record movies. The G3 indeed provides for movie recording, while the 10D does not. The highest resolution format that the G3 can use is 1080/60i.
Apart from body and sensor, cameras can and do differ across a variety of features. For example, the G3 has an electronic viewfinder (1440k dots), while the 10D 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 G3 offers a wider field of view (100%) than the one in the 10D (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the G3 has a higher magnification (0.70x vs 0.55x), 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 10D, the Panasonic G3, and comparable cameras.
|1.||Canon 10D||optical||Y||1.8 / 118||fixed||n||1/4000s||3.0||Y||n|
|2.||Panasonic G3||1440||n||3.0 / 460||swivel||Y||1/4000s||4.0||Y||n|
|3.||Canon 7D II||optical||Y||3.0 / 1040||fixed||n||1/8000s||10.0||Y||n|
|4.||Canon 70D||optical||Y||3.0 / 1040||swivel||Y||1/8000s||7.0||Y||n|
|5.||Canon 60D||optical||Y||3.0 / 1040||swivel||n||1/8000s||5.3||Y||n|
|6.||Canon 7D||optical||Y||3.0 / 920||fixed||n||1/8000s||8.0||Y||n|
|7.||Canon 40D||optical||Y||3.0 / 230||fixed||n||1/8000s||6.5||Y||n|
|8.||Canon 30D||optical||Y||2.5 / 230||fixed||n||1/8000s||5.0||Y||n|
|9.||Canon 20D||optical||Y||1.8 / 118||fixed||n||1/8000s||5.0||Y||n|
|10.||Canon 300D||optical||n||1.8 / 118||fixed||n||1/4000s||2.5||Y||n|
|11.||Canon D60||optical||Y||1.8 / 114||fixed||n||1/4000s||3.0||Y||n|
|12.||Nikon D100||optical||Y||1.8 / 118||fixed||n||1/4000s||3.0||Y||n|
|13.||Panasonic G6||1440||n||3.0 / 1036||swivel||Y||1/4000s||7.0||Y||n|
|14.||Panasonic G5||1440||n||3.0 / 920||swivel||Y||1/4000s||6.0||Y||n|
|15.||Panasonic GX1||optional||n||3.0 / 460||fixed||Y||1/4000s||4.2||Y||n|
|16.||Panasonic G10||202||n||3.0 / 460||fixed||n||1/4000s||2.6||Y||n|
|17.||Panasonic G2||1440||n||3.0 / 460||swivel||Y||1/4000s||2.6||Y||n|
One feature that is present on the 10D, but is missing on the G3 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 G3 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 10D does not have a selfie-screen.
The 10D writes its imaging data to Compact Flash cards, while the G3 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 10D and Panasonic Lumix DMC-G3 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
Mic / Speaker
|1.||Canon 10D||Y||- / -||-||-||-||1.1||-||-||-|
|2.||Panasonic G3||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|3.||Canon 7D II||Y||stereo / mono||Y||Y||mini||3.0||-||-||-|
|4.||Canon 70D||Y||stereo / mono||Y||-||mini||2.0||Y||-||-|
|5.||Canon 60D||Y||mono / mono||Y||-||mini||2.0||-||-||-|
|6.||Canon 7D||Y||mono / -||Y||-||mini||2.0||-||-||-|
|7.||Canon 40D||Y||- / -||-||-||-||2.0||-||-||-|
|8.||Canon 30D||Y||- / -||-||-||-||2.0||-||-||-|
|9.||Canon 20D||Y||- / -||-||-||-||1.1||-||-||-|
|10.||Canon 300D||Y||- / -||-||-||-||1.1||-||-||-|
|11.||Canon D60||Y||- / -||-||-||-||1.1||-||-||-|
|12.||Nikon D100||Y||- / -||-||-||-||1.1||-||-||-|
|13.||Panasonic G6||Y||stereo / mono||Y||-||mini||2.0||Y||Y||-|
|14.||Panasonic G5||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|15.||Panasonic GX1||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|16.||Panasonic G10||Y||mono / -||-||-||mini||2.0||-||-||-|
|17.||Panasonic G2||Y||stereo / mono||-||-||mini||2.0||-||-||-|
Studio photographers will appreciate that the Canon 10D (unlike the G3) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
Both the 10D and the G3 have been discontinued, but can regularly be found used on eBay. The 10D was replaced by the Canon 20D, while the G3 was followed by the Panasonic G5. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Canon and Panasonic websites.
So how do things add up? Is the Canon 10D better than the Panasonic G3 or vice versa? Below is a summary of the relative strengths of each of the two contestants.
Arguments in favor of the Canon EOS 10D:
- Brighter framing: Features an optical viewfinder for clear, lag-free composition.
- Easier setting verification: Features an LCD display on top to control shooting parameters.
- Longer lasting: Can take more shots (500 versus 270) on a single battery charge.
- Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
- More heavily discounted: Has been available for much longer (launched in February 2003).
Reasons to prefer the Panasonic Lumix DMC-G3:
- More detail: Has more megapixels (15.8 vs 6.3MP), which boosts linear resolution by 56%.
- Broader imaging potential: Can capture not only stills but also 1080/60i video.
- 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 0.55x).
- 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 (460k vs 118k 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 (4 vs 3 flaps/sec) to capture the decisive moment.
- More compact: Is smaller (115x84mm vs 150x107mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight (by 514g or 60 percent) and is thus easier to take along.
- More legacy lens friendly: Can use many non-native lenses via adapters.
- Faster data transfer: Supports a more advanced USB protocol (2.0 vs 1.1).
- More affordable: Was introduced into a lower priced category (70 percent cheaper at launch).
- More modern: Reflects 8 years and 2 months of technical progress since the 10D launch.
If the count of relative strengths (bullet points above) is taken as a measure, the G3 is the clear winner of the contest (17 : 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 wildlife photographer will view the differences between cameras in a way that diverges from the perspective of a family photog, and a person interested in architecture has distinct needs from a sports 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 10D and the Panasonic G3 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 technical specifications can provide a useful overview of the capabilities of different cameras, it says little about, for example, the shooting experience and imaging performance of the 10D and the G3 in practical situations. 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 table below provides a synthesis of the camera assessments of some of the best known photo-gear 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 10D||..||..||..||+ +||..||..||Feb 2003||1,999|
|2.||Panasonic G3||3/5||+ +||..||75/100||4.5/5||5/5||May 2011||599|
|3.||Canon 7D II||4.5/5||+||3.5/5||84/100||4/5||4.5/5||Sep 2014||1,799|
|4.||Canon 70D||5/5||+ +||..||83/100||4.5/5||5/5||Jul 2013||1,199|
|5.||Canon 60D||5/5||+||..||79/100||4/5||4.5/5||Aug 2010||1,399|
|6.||Canon 7D||5/5||+ +||..||84/100||4.5/5||4.5/5||Sep 2009||1,699|
|7.||Canon 40D||..||+ +||..||+ +||4.5/5||4.5/5||Aug 2007||1,299|
|8.||Canon 30D||..||+ +||..||+ +||o||..||Feb 2006||1,399|
|9.||Canon 20D||..||..||..||+ +||..||..||Aug 2004||1,499|
|10.||Canon 300D||..||..||..||+ +||..||..||Aug 2003||899|
|11.||Canon D60||..||..||..||+ +||o||..||Feb 2002||2,999|
|12.||Nikon D100||..||..||..||+ +||o||..||Feb 2002||1,999|
|13.||Panasonic G6||4/5||+ +||..||..||5/5||4.5/5||Apr 2013||599|
|14.||Panasonic G5||3/5||+ +||..||..||4.5/5||4.5/5||Jul 2012||599|
|15.||Panasonic GX1||3/5||+||..||77/100||4.5/5||4.5/5||Nov 2011||699|
|16.||Panasonic G10||3/5||..||..||70/100||4/5||4/5||Mar 2010||499|
|17.||Panasonic G2||..||..||..||72/100||4/5||4.5/5||Mar 2010||599|
|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. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. 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 would like to check on the differences and similarities of other camera models, just make your choice using the following search menu. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.
- Canon 10D vs Canon 400D
- Canon 10D vs Canon M3
- Canon 10D vs Canon RP
- Canon 10D vs Fujifilm X-A10
- Canon 10D vs Nikon D750
- Canon 10D vs Sony A7S II
- Hasselblad X1D II vs Panasonic G3
- Nikon D1X vs Panasonic G3
- Panasonic G3 vs Panasonic TZ100
- Panasonic G3 vs Sony A7
- Panasonic G3 vs Sony A7R II
- Panasonic G3 vs Sony NEX-5T
Specifications: Canon 10D vs Panasonic G3
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 10D||Panasonic G3|
|Camera Type||Digital single lens reflex||Mirrorless system camera|
|Camera Lens||Canon EF mount lenses||Micro Four Thirds lenses|
|Launch Date||February 2003||May 2011|
|Launch Price||USD 1,999||USD 599|
|Sensor Specs||Canon 10D||Panasonic G3|
|Sensor Format||APS-C Sensor||Four Thirds Sensor|
|Sensor Size||22.7 x 15.1 mm||17.3 x 13.0 mm|
|Sensor Area||342.77 mm2||224.9 mm2|
|Sensor Diagonal||27.3 mm||21.6 mm|
|Sensor Resolution||6.3 Megapixels||15.8 Megapixels|
|Image Resolution||3072 x 2048 pixels||4592 x 3448 pixels|
|Pixel Pitch||7.38 μm||3.77 μm|
|Pixel Density||1.84 MP/cm2||7.04 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||no Video||1080/60i Video|
|ISO Setting||100 - 3,200 ISO||160 - 6,400 ISO|
|Image Processor||DIGIC||Venus FHD|
|DXO Sensor Quality (score)||57||56|
|DXO Color Depth (bits)||21.1||21.0|
|DXO Dynamic Range (EV)||10.9||10.6|
|DXO Low Light (ISO)||571||667|
|Screen Specs||Canon 10D||Panasonic G3|
|Viewfinder Type||Optical viewfinder||Electronic viewfinder|
|Viewfinder Field of View||95%||100%|
|Viewfinder Resolution||1440k dots|
|Top-Level Screen||Control Panel||no Top Display|
|LCD Framing||Live View|
|Rear LCD Size||1.8inch||3.0inch|
|LCD Resolution||118k dots||460k dots|
|LCD Attachment||Fixed screen||Swivel screen|
|Touch Input||no Touchscreen||Touchscreen|
|Shooting Specs||Canon 10D||Panasonic G3|
|Focus System||Phase-detect AF||Contrast-detect AF|
|Continuous Shooting||3 shutter flaps/s||4 shutter flaps/s|
|Fill Flash||Built-in Flash||Built-in Flash|
|Storage Medium||CF cards||SDXC cards|
|Second Storage Option||Single card slot||Single card slot|
|Connectivity Specs||Canon 10D||Panasonic G3|
|Studio Flash||PC Sync socket||no PC Sync|
|USB Connector||USB 1.1||USB 2.0|
|HDMI Port||no HDMI||mini HDMI|
|Wifi Support||no Wifi||no Wifi|
|Body Specs||Canon 10D||Panasonic G3|
|Battery Life (CIPA)||500 shots per charge||270 shots per charge|
150 x 107 x 75 mm
(5.9 x 4.2 x 3.0 in)
115 x 84 x 47 mm
(4.5 x 3.3 x 1.9 in)
|Camera Weight||850 g (30.0 oz)||336 g (11.9 oz)|
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