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Canon XTi vs Panasonic GM1

The Canon EOS Rebel XTi (called Canon 400D in some regions) and the Panasonic Lumix DMC-GM1 are two digital cameras that were announced, respectively, in August 2006 and October 2013. The XTi is a DSLR, while the GM1 is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (XTi) and a Four Thirds (GM1) sensor. The Canon has a resolution of 10.1 megapixels, whereas the Panasonic provides 15.8 MP.

As their names suggest, both the Canon EOS Rebel XTi and the Panasonic Lumix DMC-GM1 belong to Canon's Rebel line of DSLR cameras. This range of APS-C cameras, which started out with the Canon EOS Digital Rebel in 2003, has been a big commercial success and the backbone of Canon's dominance in the digital camera market. The popularity of the Rebel cameras is the result of them inheriting much of the sensor and shooting technology from earlier released professional DSLRs, while being sold at a much more budget-friendly price point. The strong brand reputation of Canon and the comprehensive EOS system of compatible lenses and accessories further contributes to the appeal of the Rebel cams, including the Canon XTi and Panasonic GM1. Below is an overview of the main specs of the two cameras as a starting point for the comparison.

Headline Specifications
Canon XTi   Panasonic GM1
Canon XTi Panasonic GM1
Digital single lens reflex Mirrorless system camera
Canon EF mount lenses Micro Four Thirds lenses
10.1 MP, APS-C Sensor 15.8 MP, Four Thirds Sensor
no Video 1080/60i Video
ISO 100-1600 ISO 200-25600
Optical viewfinder No viewfinder, LCD framing
2.5" LCD, 230k dots 3.0" LCD, 1036k dots
Fixed screen (not touch-sensitive) Fixed touchscreen
3 shutter flaps per second 5 shutter flaps per second
370 shots per battery charge230 shots per battery charge
127 x 84 x 65 mm, 556 g 99 x 55 x 30 mm, 204 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS Rebel XTi and the Panasonic Lumix DMC-GM1? 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.

Body comparison

The physical size and weight of the Canon XTi and the Panasonic GM1 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 width, height and depth dimensions are rounded to the nearest millimeter.

The GM1 can be obtained in three different colors (black, silver, red), while the XTi is only available in black.

Size Canon XTi vs Panasonic GM1
Compare XTi versus GM1 top
Comparison XTi or GM1 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Panasonic GM1 is considerably smaller (49 percent) than the Canon XTi. Moreover, the GM1 is substantially lighter (63 percent) than the XTi. In this context, it is worth noting that neither the XTi nor the GM1 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 (GM1). Mirrorless cameras, such as the GM1, 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.

Concerning battery life, the XTi gets 370 shots out of its NB-2LH battery, while the GM1 can take 230 images on a single charge of its DMW-BLH7 power pack.

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, just click on the right or left arrow next to the camera that you would like to inspect. Alternatively, you can also use the CAM-parator to select your camera combination among a larger number of options.

Camera Body Specifications
  Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
(CIPA)
Weather
Sealing
(yes/no)
Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Camera
Model
 
Canon XTi» 5.0 in 3.3 in 2.6 in 19.6 oz 370 n Aug 2006 799- i Canon XTi
 
Panasonic GM1« 3.9 in 2.2 in 1.2 in 7.2 oz 230 n Oct 2013 749- i Panasonic GM1
 
Canon T6i« » 5.2 in 4.0 in 3.1 in 19.6 oz 440 n Feb 2015 749- i Canon T6i
 
Canon T6s« » 5.2 in 4.0 in 3.1 in 19.9 oz 440 n Feb 2015 649- i Canon T6s
 
Canon T4i« » 5.2 in 3.9 in 3.1 in 20.3 oz 440 n Jun 2012 849- i Canon T4i
 
Canon T3« » 5.1 in 3.9 in 3.1 in 17.5 oz 700 n Feb 2011 449- i Canon T3
 
Canon T2i« » 5.1 in 3.9 in 2.4 in 18.7 oz 440 n Feb 2010 699- i Canon T2i
 
Canon T1i« » 5.1 in 3.9 in 2.4 in 18.3 oz 400 n Mar 2009 799- i Canon T1i
 
Canon XSi« » 5.1 in 3.9 in 2.4 in 18.5 oz 500 n Jan 2008 799- i Canon XSi
 
Canon 40D« » 5.7 in 4.3 in 2.9 in 29.0 oz 750 n Aug 2007 1,299- i Canon 40D
 
Canon XT« » 5.0 in 3.7 in 2.5 in 19.0 oz 400 n Feb 2005 899- i Canon XT
 
Canon Rebel« » 5.6 in 3.9 in 2.8 in 22.9 oz 400 n Aug 2003 899- i Canon Rebel
 
Panasonic GM5« » 3.9 in 2.4 in 1.4 in 7.4 oz 220 n Sep 2014 749- i Panasonic GM5
 
Panasonic G6« » 4.8 in 3.3 in 2.8 in 13.8 oz 340 n Apr 2013 599- i Panasonic G6
 
Panasonic GX7« » 4.8 in 2.8 in 2.2 in 14.2 oz 350 n Aug 2013 999- i Panasonic GX7
 
Panasonic GX1« » 4.6 in 2.7 in 1.5 in 11.2 oz 320 n Nov 2011 699- i Panasonic GX1
 
Panasonic GH2« » 4.9 in 3.5 in 3.0 in 15.6 oz 330 n Sep 2010 899- i Panasonic GH2
Note: Measurements and pricing do not include easily detachable parts, such as interchangeable lenses or optional viewfinders.

The price is, of course, an important factor in any camera decision. 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 GM1 was somewhat cheaper (by 6 percent) than the XTi at launch, but both cameras fall into the same price category. 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.

 

Sensor comparison

The size of the sensor inside a digital camera is one of the key determinants 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. 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 XTi features an APS-C sensor and the Panasonic GM1 a Four Thirds sensor. The sensor area in the GM1 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 GM1 offers a 4:3 aspect.

In terms of underlying technology, both cameras are build around CMOS sensors.

Canon XTi and Panasonic GM1 sensor measures

Despite having a smaller sensor, the GM1 offers a higher resolution of 15.8 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 3.77μm versus 5.71μm for the XTi). However, it should be noted that the GM1 is much more recent (by 7 years and 1 month) 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 GM1 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the GM1 for good quality output (200 dots per inch) amounts to 23 x 17.2 inch or 58.3 x 43.8 cm, for very good quality (250 dpi) 18.4 x 13.8 inch or 46.7 x 35 cm, and for excellent quality (300 dpi) 15.3 x 11.5 inch or 38.9 x 29.2 cm. The corresponding values for the Canon XTi are 19.4 x 13 inch or 49.4 x 32.9 cm for good quality, 15.6 x 10.4 inch or 39.5 x 26.3 cm for very good quality, and 13 x 8.6 inch 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-GM1 are ISO 200 to ISO 25600, with the possibility to increase the ISO range to 125-25600.

XTi versus GM1 MP

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service is based on lab testing and assigns an overall score to each camera sensor, as well as ratings for dynamic range ("DXO Landscape"), color depth ("DXO Portrait"), and low-light sensitivity ("DXO Sports"). Of the two cameras under consideration, the GM1 has a markedly higher DXO score than the XTi (overall score 4 points higher), which will translate into better image quality. The advantage is based on 0.2 bits higher color depth, 0.7 EV in additional dynamic range, and 0 stops of reduced 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.

Sensor Characteristics
  Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Camera
Model
 
Canon XTi» APS-C 10.1 3888 2592-22.111.066462Canon XTi
 
Panasonic GM1« Four Thirds 15.8 4592 34481080/60i22.311.766066Panasonic GM1
 
Canon T6i« » APS-C 24.0 6000 40001080/60p22.712.091971Canon T6i
 
Canon T6s« » APS-C 24.0 6000 40001080/30p22.612.091570Canon T6s
 
Canon T4i« » APS-C 17.9 5184 34561080/30p21.711.272262Canon T4i
 
Canon T3« » APS-C 12.2 4272 2848720/30p21.911.075562Canon T3
 
Canon T2i« » APS-C 17.9 5184 34561080/30p22.111.578466Canon T2i
 
Canon T1i« » APS-C 15.1 4752 31681080/20p21.711.566363Canon T1i
 
Canon XSi« » APS-C 12.2 4272 2848-21.910.869261Canon XSi
 
Canon 40D« » APS-C 10.1 3888 2592-22.111.370364Canon 40D
 
Canon XT« » APS-C 8.0 3456 2304-21.810.863760Canon XT
 
Canon Rebel« » APS-C 6.3 3072 2048-21.010.854455Canon Rebel
 
Panasonic GM5« » Four Thirds 15.8 4592 34481080/60p22.111.772166Panasonic GM5
 
Panasonic G6« » Four Thirds 15.9 4608 34561080/60p21.311.563961Panasonic G6
 
Panasonic GX7« » Four Thirds 15.8 4592 34481080/60p22.612.271870Panasonic GX7
 
Panasonic GX1« » Four Thirds 15.8 4592 34481080/60p20.810.670355Panasonic GX1
 
Panasonic GH2« » Four Thirds 15.9 4608 34561080/60i21.211.365560Panasonic GH2

Many modern cameras cannot only take still pictures, but also record videos. The GM1 indeed provides for movie recording, while the XTi does not. The highest resolution format that the GM1 can use is 1080/60i.

 

Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. For example, the XTi has an optical viewfinder, which can be very useful when shooting in bright sunlight. In contrast, the GM1 relies on live view and the rear LCD for framing. The following table reports on some other key feature differences and similarities of the Canon XTi, the Panasonic GM1, and comparable cameras.

Core Features
  Camera
Model
Viewfinder
(Type or
'000 dots)
Control
Panel
(yes/no)
LCD
Size
(inch)
LCD
Resolution
('000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Mech
Shutter
Speed
Shutter
Flaps
(1/sec)
Built-in
Flash
(yes/no)
Built-in
Image
Stab
Camera
Model
 
Canon XTi»optical n 2.5 230 fixed n 1/4000s 3.0 Y n Canon XTi
 
Panasonic GM1«- n 3.0 1036 fixed Y 1/500s 5.0 Y n Panasonic GM1
 
Canon T6i« »optical n 3.0 1040 swivel Y 1/4000s 5.0 Y n Canon T6i
 
Canon T6s« »optical Y 3.0 1040 swivel Y 1/4000s 5.0 Y n Canon T6s
 
Canon T4i« »optical n 3.0 1040 swivel Y 1/4000s 5.0 Y n Canon T4i
 
Canon T3« »optical n 2.7 230 fixed n 1/4000s 3.0 Y n Canon T3
 
Canon T2i« »optical n 3.0 1040 fixed n 1/4000s 3.7 Y n Canon T2i
 
Canon T1i« »optical n 3.0 920 fixed n 1/4000s 3.4 Y n Canon T1i
 
Canon XSi« »optical n 3.0 230 fixed n 1/4000s 3.5 Y n Canon XSi
 
Canon 40D« »optical Y 3.0 230 fixed n 1/8000s 6.5 Y n Canon 40D
 
Canon XT« »optical n 1.8 115 fixed n 1/4000s 3.0 Y n Canon XT
 
Canon Rebel« »optical n 1.8 118 fixed n 1/4000s 2.5 Y n Canon Rebel
 
Panasonic GM5« »1166 n 3.0 921 fixed Y 1/500s 5.8 n n Panasonic GM5
 
Panasonic G6« »1440 n 3.0 1036 swivel Y 1/4000s 7.0 Y n Panasonic G6
 
Panasonic GX7« »2760 n 3.0 1040 tilting Y 1/8000s 5.0 Y Y Panasonic GX7
 
Panasonic GX1« »- n 3.0 460 fixed Y 1/4000s 4.2 Y n Panasonic GX1
 
Panasonic GH2« »1534 n 3.0 460 swivel n 1/4000s 3.0 Y n Panasonic GH2

One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The GM1 has a touchscreen, while the XTi has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.

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 GM1 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 Panasonic GM1 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 XTi writes its imaging data to Compact Flash cards, while the GM1 uses SDXC cards.

 

Connectivity comparison

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-GM1 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

Input-Output Connections
  Camera
Model
Hotshoe
Port
Internal
Microphone
Internal
Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Type
WiFi
Support
NFC
Support
Bluetooth
Support
Camera
Model
 
Canon XTi»Y-----2.0---Canon XTi
 
Panasonic GM1«-stereomono--micro2.0Y--Panasonic GM1
 
Canon T6i« »YstereomonoY-mini2.0YY-Canon T6i
 
Canon T6s« »YstereomonoY-mini2.0YY-Canon T6s
 
Canon T4i« »YstereomonoY-mini2.0---Canon T4i
 
Canon T3« »Ystereomono--mini2.0---Canon T3
 
Canon T2i« »Ystereo-Y-mini2.0---Canon T2i
 
Canon T1i« »Ymonomono--mini2.0---Canon T1i
 
Canon XSi« »Y----mini2.0---Canon XSi
 
Canon 40D« »Y-----2.0---Canon 40D
 
Canon XT« »Y-----2.0---Canon XT
 
Canon Rebel« »Y-----1.1---Canon Rebel
 
Panasonic GM5« »Ystereomono--micro2.0Y--Panasonic GM5
 
Panasonic G6« »YstereomonoY-mini2.0YY-Panasonic G6
 
Panasonic GX7« »Ystereomono--mini2.0YY-Panasonic GX7
 
Panasonic GX1« »Ystereomono--mini2.0---Panasonic GX1
 
Panasonic GH2« »YstereomonoY-mini2.0---Panasonic GH2

It is notable that the XTi has a hotshoe, while the GM1 does not. This socket makes it possible to easily attach optional accessories, such as an external flash gun.

Both the XTi and the GM1 have been discontinued, but can regularly be found used on eBay. The XTi was replaced by the Canon Xsi, while the GM1 was followed by the Panasonic GM5. 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.


Review summary

So what conclusions can be drawn? Is there a clear favorite between the Canon XTi and the Panasonic GM1? Which camera is better? Below is a summary of the relative strengths of each of the two contestants.

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Reasons to prefer the Canon EOS Rebel XTi:

  • Easier framing: Has an optical viewfinder for image composition and settings control.
  • Faster shutter: Has higher mechanical shutter speed (1/4000s vs 1/500s) to freeze action.
  • Longer lasting: Can take more shots (370 versus 230) on a single battery charge.
  • Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
  • More heavily discounted: Has been available for much longer (launched in August 2006).

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Arguments in favor of the Panasonic Lumix DMC-GM1:

  • More detail: Has more megapixels (15.8 vs 10.1MP), which boosts linear resolution by 23%.
  • Better image quality: Scores markedly higher (4 points) in the DXO overall evaluation.
  • More dynamic range: Captures a broader range of light and dark details (0.7 EV of extra DR).
  • Broader imaging potential: Can capture not only stills but also 1080/60i video.
  • 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 (1036k vs 230k dots).
  • Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
  • Faster burst: Shoots at higher frequency (5 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 (99x55mm vs 127x84mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 352g or 63 percent) and is thus easier to take along.
  • More legacy lens friendly: Can use many non-native lenses via adapters.
  • Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
  • More modern: Reflects 7 years and 1 month of technical progress since the XTi launch.

If the count of relative strengths (bullet points above) is taken as a measure, the GM1 is the clear winner of the contest (15 : 5 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 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.

XTi 05:15 GM1

How about other alternatives? Do the specifications of the Canon XTi and the Panasonic GM1 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 remains incomplete and does no justice, for example, to the way the XTi or the GM1 perform in practice. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased.

Expert reviews

This is why hands-on reviews by experts are important. The following table reports the overall ratings of the cameras as published by some of the major camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, and photographyblog). 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.

Review Scores
  Camera
Model
cameralabs dpreview ephotozine imaging-resource photographyblog Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Camera
Model
 
Canon XTi»+ ++ +o4.5/54/5 Aug 2006 799- i Canon XTi
 
Panasonic GM1«+78/1005/54.5/54.5/5 Oct 2013 749- i Panasonic GM1
 
Canon T6i« »-75/1004.5/54.5/54.5/5 Feb 2015 749- i Canon T6i
 
Canon T6s« »+77/1004.5/54.5/54.5/5 Feb 2015 649- i Canon T6s
 
Canon T4i« »+ +77/1004.5/54.5/54.5/5 Jun 2012 849- i Canon T4i
 
Canon T3« »80/10069/1004/54/54.5/5 Feb 2011 449- i Canon T3
 
Canon T2i« »+ +77/1004/55/54.5/5 Feb 2010 699- i Canon T2i
 
Canon T1i« »+ +74/1004.5/55/54.5/5 Mar 2009 799- i Canon T1i
 
Canon XSi« »+ ++ +4/55/54.5/5 Jan 2008 799- i Canon XSi
 
Canon 40D« »+ ++ +4.5/5o4.5/5 Aug 2007 1,299- i Canon 40D
 
Canon XT« »80/100+ +oo- Feb 2005 899- i Canon XT
 
Canon Rebel« »-+ +-o- Aug 2003 899- i Canon Rebel
 
Panasonic GM5« »+77/1005/55/54.5/5 Sep 2014 749- i Panasonic GM5
 
Panasonic G6« »+ +-5/5-4.5/5 Apr 2013 599- i Panasonic G6
 
Panasonic GX7« »+79/1005/54.5/55/5 Aug 2013 999- i Panasonic GX7
 
Panasonic GX1« »+77/1004.5/54.5/54.5/5 Nov 2011 699- i Panasonic GX1
 
Panasonic GH2« »+ +79/1004.5/54.5/55/5 Sep 2010 899- i Panasonic GH2
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (-) not available.

The review scores listed above should be treated with care, though. The assessments were made in relation to similar cameras of the same technological generation. 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. It should also be noted that some of the review sites have over time altered the way they render their verdicts.

Canon XTi:
Check Ebay offers
Panasonic GM1:
Check Ebay offers

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 your choice using the following search menu. As an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.

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    Specifications: Canon XTi vs Panasonic GM1

    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 Specifications
    Camera Model Canon XTi Panasonic GM1
    Camera Type Digital single lens reflex Mirrorless system camera
    Camera Lens Canon EF mount lenses Micro Four Thirds lenses
    Launch Date August 2006 October 2013
    Launch Price USD 799 USD 749
    Sensor Specs Canon XTi Panasonic GM1
    Sensor Technology CMOS CMOS
    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
    Crop Factor 1.6x 2.0x
    Sensor Resolution 10.1 Megapixels 15.8 Megapixels
    Image Resolution 3888 x 2592 pixels 4592 x 3448 pixels
    Pixel Pitch 5.71 μm 3.77 μm
    Pixel Density 3.07 MP/cm2 7.04 MP/cm2
    Moiré control Anti-Alias filter Anti-Alias filter
    Movie Capability no Video 1080/60i Video
    ISO Setting 100-1600 ISO 200-25600 ISO
    ISO Boost no Enhancement 125-25600 ISO
    Image Processor DIGIC II Venus IX
    DXO Sensor Quality (score) 62 66
    DXO Color Depth (bits) 22.1 22.3
    DXO Dynamic Range (EV) 11.0 11.7
    DXO Low Light (ISO) 664 660
    Screen Specs Canon XTi Panasonic GM1
    Viewfinder Type Optical viewfinder No viewfinder
    Viewfinder Field of View 95%
    Viewfinder Magnification 0.49x
    LCD Framing Live View
    Rear LCD Size 2.5 inch 3.0 inch
    LCD Resolution 230k dots 1036k dots
    LCD Attachment Fixed screen Fixed screen
    Touch Input no Touchscreen Touchscreen
    Shooting Specs Canon XTi Panasonic GM1
    Autofocus System Phase-detect AF Contrast-detect AF
    Manual Focusing AidNo Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) 1/4000/s 1/500/s
    Continuous Shooting 3 shutter flaps/s 5 shutter flaps/s
    Electronic Shutterno E-Shutterup to 1/16000s
    Time-Lapse Photographyno IntervalometerIntervalometer built-in
    Fill Flash Build-in Flash Build-in Flash
    Storage Medium CF cards SDXC cards
    Second Storage Option Single card slot Single card slot
    Connectivity Specs Canon XTi Panasonic GM1
    External Flash Hotshoe no Hotshoe
    USB Connector USB 2.0 USB 2.0
    HDMI Port no HDMI micro HDMI
    Wifi Support no Wifi Wifi built-in
    Body Specs Canon XTi Panasonic GM1
    Battery Type NB-2LH DMW-BLH7
    Battery Life (CIPA)370 shots per charge230 shots per charge
    Body Dimensions 127 x 84 x 65 mm
    (5.0 x 3.3 x 2.6 in)
    99 x 55 x 30 mm
    (3.9 x 2.2 x 1.2 in)
    Camera Weight 556 g (19.6 oz) 204 g (7.2 oz)

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