Canon XTi vs Panasonic G1
The Canon EOS Rebel XTi (called Canon 400D in some regions) and the Panasonic Lumix DMC-G1 are two digital cameras that were officially introduced, respectively, in August 2006 and September 2008. The XTi is a DSLR, while the G1 is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (XTi) and a Four Thirds (G1) sensor. The Canon has a resolution of 10.1 megapixels, whereas the Panasonic provides 12 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 Rebel XTi and the Panasonic Lumix DMC-G1? 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 XTi and the Panasonic G1 are illustrated in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive views from the front, the top, and the rear side are shown. 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 Panasonic G1 is somewhat smaller (2 percent) than the Canon XTi. Moreover, the G1 is substantially lighter (35 percent) than the XTi. In this context, it is worth noting that neither the XTi nor the G1 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 (XTi) and the Micro Four Thirds Lens Catalog (G1). Mirrorless cameras, such as the G1, 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 adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. 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 XTi||5.0 in||3.3 in||2.6 in||19.6 oz||370||n||Aug 2006||799|
|2.||Panasonic G1||4.9 in||3.3 in||1.8 in||12.7 oz||410||n||Sep 2008||599|
|3.||Canon T6i||5.2 in||4.0 in||3.1 in||19.6 oz||440||n||Feb 2015||749|
|4.||Canon T6s||5.2 in||4.0 in||3.1 in||19.9 oz||440||n||Feb 2015||649|
|5.||Canon T4i||5.2 in||3.9 in||3.1 in||20.3 oz||440||n||Jun 2012||849|
|6.||Canon T3||5.1 in||3.9 in||3.1 in||17.5 oz||700||n||Feb 2011||449|
|7.||Canon T2i||5.1 in||3.9 in||2.4 in||18.7 oz||440||n||Feb 2010||699|
|8.||Canon T1i||5.1 in||3.9 in||2.4 in||18.3 oz||400||n||Mar 2009||799|
|9.||Canon XSi||5.1 in||3.9 in||2.4 in||18.5 oz||500||n||Jan 2008||799|
|10.||Canon 40D||5.7 in||4.3 in||2.9 in||29.0 oz||750||n||Aug 2007||1,299|
|11.||Canon XT||5.0 in||3.7 in||2.5 in||19.0 oz||400||n||Feb 2005||899|
|12.||Canon Rebel||5.6 in||3.9 in||2.8 in||22.9 oz||400||n||Aug 2003||899|
|13.||Olympus E-410||5.1 in||3.6 in||2.1 in||15.3 oz||500||n||Mar 2007||699|
|14.||Panasonic G10||4.9 in||3.3 in||2.9 in||13.7 oz||380||n||Mar 2010||499|
|15.||Panasonic G2||4.9 in||3.3 in||2.9 in||15.1 oz||360||n||Mar 2010||599|
|16.||Panasonic GH1||4.9 in||3.5 in||1.8 in||13.6 oz||300||n||Mar 2009||899|
|17.||Panasonic L10||5.3 in||3.8 in||3.1 in||19.6 oz||450||n||Aug 2007||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 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 G1 was launched at a somewhat lower price (by 25 percent) than the XTi, which makes it more attractive for photographers on a tight budget. 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. 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 XTi features an APS-C sensor and the Panasonic G1 a Four Thirds sensor. The sensor area in the G1 is 32 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 XTi has a native 3:2 aspect ratio, while the one in the G1 offers a 4:3 aspect.
Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors.
Despite having a smaller sensor, the G1 offers a higher resolution of 12 megapixels, compared with 10.1 MP of the XTi. 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 4.33μm versus 5.71μm for the XTi). However, it should be noted that the G1 is much more recent (by 2 years) than the XTi, 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 G1 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the G1 for good quality output (200 dots per inch) amounts to 20 x 15 inches or 50.8 x 38.1 cm, for very good quality (250 dpi) 16 x 12 inches or 40.6 x 30.5 cm, and for excellent quality (300 dpi) 13.3 x 10 inches or 33.9 x 25.4 cm. The corresponding values for the Canon XTi 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 Rebel XTi has a native sensitivity range from ISO 100 to ISO 1600. The corresponding ISO settings for the Panasonic Lumix DMC-G1 are ISO 100 to ISO 1600, with the possibility to increase the ISO range to 100-3200.
Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service determines an overall sensor rating, as well as sub-scores for low-light sensitivity ("DXO Sports"), dynamic range ("DXO Landscape"), and color depth ("DXO Portrait"). Of the two cameras under review, the XTi has a notably higher overall DXO score than the G1 (overall score 9 points higher), which gives it an advantage in terms of imaging quality. This advantage is based on 1 bits higher color depth, 0.7 EV in additional dynamic range, and 0.5 stops in additional low light sensitivity. 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 |
|2.||Panasonic G1||Four Thirds||12.0||4000||3000||none||21.1||10.3||463||53|
|13.||Olympus E-410||Four Thirds||10.0||3648||2736||none||21.1||10.0||494||51|
|14.||Panasonic G10||Four Thirds||12.0||4000||3000||720/30p||21.2||10.1||411||52|
|15.||Panasonic G2||Four Thirds||12.0||4000||3000||720/30p||21.2||10.3||493||53|
|16.||Panasonic GH1||Four Thirds||12.0||4000||3000||1080/24p||21.6||11.6||772||64|
|17.||Panasonic L10||Four Thirds||10.0||3648||2736||none||21.3||10.8||429||55|
Beyond body and sensor, cameras can and do differ across a range of features. For example, the G1 has an electronic viewfinder (1440k dots), while the XTi 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 G1 offers a wider field of view (100%) than the one in the XTi (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the G1 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 adjacent table lists some of the other core features of the Canon XTi and Panasonic G1 along with similar information for a selection of comparators.
The XTi writes its imaging data to Compact Flash cards, while the G1 uses SDHC 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 Rebel XTi and Panasonic Lumix DMC-G1 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
| WiFi |
| NFC |
Both the XTi and the G1 have been discontinued, but can regularly be found used on eBay. The XTi was replaced by the Canon Xsi, while the G1 was followed by the Panasonic G2. 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? Which of the two cameras – the Canon XTi or the Panasonic G1 – 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 Rebel XTi:
- Better image quality: Scores markedly higher (9 points) in the DXO overall assessment.
- More dynamic range: Captures a larger spectrum of light and dark details (0.7 EV of extra DR).
- Better low-light sensitivity: Requires less light for good images (0.5 stops ISO advantage).
- Brighter framing: Features an optical viewfinder for clear, lag-free composition.
- More heavily discounted: Has been available for much longer (launched in August 2006).
Arguments in favor of the Panasonic Lumix DMC-G1:
- More detail: Has more megapixels (12 vs 10.1MP), which boosts linear resolution by 7%.
- 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 (460k vs 230k dots).
- More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
- More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
- Less heavy: Has a lower weight (by 196g or 35 percent) and is thus easier to take along.
- Longer lasting: Gets more shots (410 versus 370) out of a single battery charge.
- More legacy lens friendly: Can use many non-native lenses via adapters.
- More affordable: Was released into a lower priced segment (25 percent cheaper at launch).
- More modern: Reflects 2 years of technical progress since the XTi launch.
If the count of individual advantages (bullet points above) is taken as a guide, the G1 is the clear winner of the contest (13 : 5 points). However, the relative importance of the various individual camera aspects will vary according to personal preferences and needs, so that you might like to apply corresponding weights to the particular features before making a decision 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 XTi and the Panasonic G1 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 remains incomplete and does no justice, for example, to the way the XTi or the G1 perform in practice. 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 table below provides a synthesis of the camera assessments of some of the best known photo-gear 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 XTi||..||+ +||+ +||o||4/5||Aug 2006||799|
|2.||Panasonic G1||..||+ +||70/100||4/5||4.5/5||Sep 2008||599|
|3.||Canon T6i||5/5||..||75/100||4.5/5||4.5/5||Feb 2015||749|
|4.||Canon T6s||5/5||+||77/100||4.5/5||4.5/5||Feb 2015||649|
|5.||Canon T4i||4/5||+ +||77/100||4.5/5||4.5/5||Jun 2012||849|
|6.||Canon T3||..||80/100||69/100||4/5||4.5/5||Feb 2011||449|
|7.||Canon T2i||..||+ +||77/100||4/5||4.5/5||Feb 2010||699|
|8.||Canon T1i||..||+ +||74/100||4.5/5||4.5/5||Mar 2009||799|
|9.||Canon XSi||..||+ +||+ +||4/5||4.5/5||Jan 2008||799|
|10.||Canon 40D||..||+ +||+ +||4.5/5||4.5/5||Aug 2007||1,299|
|11.||Canon XT||..||80/100||+ +||o||..||Feb 2005||899|
|12.||Canon Rebel||..||..||+ +||..||..||Aug 2003||899|
|13.||Olympus E-410||..||86/100||+ +||4/5||4.5/5||Mar 2007||699|
|14.||Panasonic G10||3/5||..||70/100||4/5||4/5||Mar 2010||499|
|15.||Panasonic G2||..||..||72/100||4/5||4.5/5||Mar 2010||599|
|16.||Panasonic GH1||..||+ +||72/100||4.5/5||4.5/5||Mar 2009||899|
|17.||Panasonic L10||..||85/100||+||3.5/5||4/5||Aug 2007||599|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
Care should be taken when interpreting the review scores above, though. The assessments were made in relation to similar cameras of the same technological generation. 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. 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? 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.
Specifications: Canon XTi vs Panasonic G1
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 XTi||Panasonic G1|
|Camera Type||Digital single lens reflex||Mirrorless system camera|
|Camera Lens||Canon EF mount lenses||Micro Four Thirds lenses|
|Launch Date||August 2006||September 2008|
|Launch Price||USD 799||USD 599|
|Sensor Specs||Canon XTi||Panasonic G1|
|Sensor Format||APS-C Sensor||Four Thirds Sensor|
|Sensor Size||22.2 x 14.8 mm||17.3 x 13.0 mm|
|Sensor Area||328.56 mm2||224.9 mm2|
|Sensor Diagonal||26.7 mm||21.6 mm|
|Sensor Resolution||10.1 Megapixels||12 Megapixels|
|Image Resolution||3888 x 2592 pixels||4000 x 3000 pixels|
|Pixel Pitch||5.71 μm||4.33 μm|
|Pixel Density||3.07 MP/cm2||5.34 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||no Video||no Video|
|ISO Setting||100 - 1,600 ISO||100 - 1,600 ISO|
|ISO Boost||no Enhancement||100 - 3,200 ISO|
|Image Processor||DIGIC II||Venus HD|
|DXO Sensor Quality (score)||62||53|
|DXO Color Depth (bits)||22.1||21.1|
|DXO Dynamic Range (EV)||11.0||10.3|
|DXO Low Light (ISO)||664||463|
|Screen Specs||Canon XTi||Panasonic G1|
|Viewfinder Type||Optical viewfinder||Electronic viewfinder|
|Viewfinder Field of View||95%||100%|
|Viewfinder Resolution||1440k dots|
|LCD Framing||Live View|
|Rear LCD Size||2.5inch||3.0inch|
|LCD Resolution||230k dots||460k dots|
|LCD Attachment||Fixed screen||Swivel screen|
|Shooting Specs||Canon XTi||Panasonic G1|
|Focus System||Phase-detect AF||Contrast-detect AF|
|Continuous Shooting||3 shutter flaps/s||3 shutter flaps/s|
|Fill Flash||Build-in Flash||Build-in Flash|
|Storage Medium||CF cards||SDHC cards|
|Second Storage Option||Single card slot||Single card slot|
|Connectivity Specs||Canon XTi||Panasonic G1|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||no HDMI||mini HDMI|
|Wifi Support||no Wifi||no Wifi|
|Body Specs||Canon XTi||Panasonic G1|
|Battery Life (CIPA)||370 shots per charge||410 shots per charge|
127 x 84 x 65 mm
(5.0 x 3.3 x 2.6 in)
124 x 84 x 45 mm
(4.9 x 3.3 x 1.8 in)
|Camera Weight||556 g (19.6 oz)||360 g (12.7 oz)|
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