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Canon XTi vs Panasonic GH3

The Canon EOS Rebel XTi (called Canon 400D in some regions) and the Panasonic Lumix DMC-GH3 are two digital cameras that were announced, respectively, in August 2006 and September 2012. The XTi is a DSLR, while the GH3 is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (XTi) and a Four Thirds (GH3) sensor. The Canon has a resolution of 10.1 megapixels, whereas the Panasonic provides 15.9 MP.

Below is an overview of the main specs of the two cameras as a starting point for the comparison.

Headline Specifications
Canon XTi
versus
Panasonic GH3
Canon XTi   Panasonic GH3
Digital single lens reflex Mirrorless system camera
Canon EF mount lenses Micro Four Thirds lenses
10.1 MP – APS-C sensor 15.9 MP – Four Thirds sensor
no Video 1080/60p Video
ISO 100-1,600 ISO 200-12,800 (125 - 25,600)
Optical viewfinder Electronic viewfinder (1746k dots)
2.5" LCD – 230k dots 3.0" LCD – 614k dots
Fixed screen (not touch-sensitive) Swivel touchscreen
3 shutter flaps per second 6 shutter flaps per second
not weather sealedWeathersealed body
370 shots per battery charge540 shots per battery charge
127 x 84 x 65 mm, 556 g 133 x 93 x 82 mm, 550 g
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Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS Rebel XTi and the Panasonic Lumix DMC-GH3? 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.

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Body comparison

The side-by-side display below illustrates the physical size and weight of the Canon XTi and the Panasonic GH3. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All size dimensions are rounded to the nearest millimeter.

Size Canon XTi vs Panasonic GH3
Compare XTi versus GH3 top
Comparison XTi or GH3 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Panasonic GH3 is notably larger (16 percent) than the Canon XTi. However, the GH3 is slightly lighter (1 percent) than the XTi. It is noteworthy in this context that the GH3 is splash and dust-proof, while the XTi 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 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 (GH3). Mirrorless cameras, such as the GH3, 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 Canon NB-2LH battery, while the GH3 can take 540 images on a single charge of its Panasonic DMW-BLF19 power pack.

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. 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.

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Body Specifications
  empty Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price
Street
Price
1.
 
Canon XTi 127 mm 84 mm 65 mm 556 g 370 n Aug 2006 US$ 799ebay.com
2.
 
Panasonic GH3 133 mm 93 mm 82 mm 550 g 540 Y Sep 2012 US$ 1 299ebay.com
3.
 
Canon 40D 146 mm 108 mm 74 mm 822 g 750 n Aug 2007 US$ 1 299ebay.com
4.
 
Canon Rebel 142 mm 99 mm 72 mm 649 g 400 n Aug 2003 US$ 899ebay.com
5.
 
Canon T1i 129 mm 98 mm 62 mm 520 g 400 n Mar 2009 US$ 799ebay.com
6.
 
Canon T2i 129 mm 98 mm 62 mm 530 g 440 n Feb 2010 US$ 699ebay.com
7.
 
Canon T3 130 mm 100 mm 78 mm 495 g 700 n Feb 2011 US$ 449ebay.com
8.
 
Canon T4i 133 mm 100 mm 79 mm 575 g 440 n Jun 2012 US$ 849ebay.com
9.
 
Canon T6i 132 mm 101 mm 78 mm 555 g 440 n Feb 2015 US$ 749ebay.com
10.
 
Canon XS 126 mm 98 mm 65 mm 502 g 500 n Jun 2008 US$ 449ebay.com
11.
 
Canon XSi 129 mm 98 mm 62 mm 524 g 500 n Jan 2008 US$ 799ebay.com
12.
 
Canon XT 127 mm 94 mm 64 mm 540 g 400 n Feb 2005 US$ 899ebay.com
13.
 
Olympus E-M1 130 mm 94 mm 63 mm 497 g 350 Y Sep 2013 US$ 1 399ebay.com
14.
 
Olympus E-M5 II 124 mm 85 mm 45 mm 469 g 310 Y Feb 2015 US$ 1 099ebay.com
15.
 
Panasonic G5 120 mm 83 mm 71 mm 396 g 320 n Jul 2012 US$ 599ebay.com
16.
 
Panasonic GH2 124 mm 90 mm 76 mm 442 g 330 n Sep 2010 US$ 899ebay.com
17.
 
Panasonic GH4 133 mm 93 mm 84 mm 560 g 500 Y Feb 2014 US$ 1 499ebay.com
Note: 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 manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The XTi was launched at a markedly lower price (by 38 percent) than the GH3, 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.

Sensor comparison

The size of the imaging sensor is a crucial determinant 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 tend to be associated with larger, more expensive camera bodies and lenses.

Of the two cameras under consideration, the Canon XTi features an APS-C sensor and the Panasonic GH3 a Four Thirds sensor. The sensor area in the GH3 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 GH3 offers a 4:3 aspect.

Canon XTi and Panasonic GH3 sensor measures

Despite having a smaller sensor, the GH3 offers a higher resolution of 15.9 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 3.76μm versus 5.71μm for the XTi). However, it should be noted that the GH3 is much more recent (by 6 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 GH3 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the GH3 for good quality output (200 dots per inch) amounts to 23 x 17.3 inches or 58.5 x 43.9 cm, for very good quality (250 dpi) 18.4 x 13.8 inches or 46.8 x 35.1 cm, and for excellent quality (300 dpi) 15.4 x 11.5 inches or 39 x 29.3 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-GH3 are ISO 200 to ISO 12800, with the possibility to increase the ISO range to 125-25600.

Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.

XTi versus GH3 MP

Consistent information on actual sensor performance is available from DXO Mark for many cameras. 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 consideration, the GH3 has a markedly higher DXO score than the XTi (overall score 9 points higher), which will translate into better image quality. The advantage is based on 0.6 bits higher color depth, 1.4 EV in additional dynamic range, and 0.3 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.

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Sensor Characteristics
  empty Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Canon XTi APS-C 10.1 3888 2592none22.111.066462
2.
 
Panasonic GH3 Four Thirds 15.9 4608 34561080/60p22.712.481271
3.
 
Canon 40D APS-C 10.1 3888 2592none22.111.370364
4.
 
Canon Rebel APS-C 6.3 3072 2048none21.010.854455
5.
 
Canon T1i APS-C 15.1 4752 31681080/20p21.711.566363
6.
 
Canon T2i APS-C 17.9 5184 34561080/30p22.111.578466
7.
 
Canon T3 APS-C 12.2 4272 2848720/30p21.911.075562
8.
 
Canon T4i APS-C 17.9 5184 34561080/30p21.711.272262
9.
 
Canon T6i APS-C 24.0 6000 40001080/30p22.712.091971
10.
 
Canon XS APS-C 10.1 3888 2592none22.010.971962
11.
 
Canon XSi APS-C 12.2 4272 2848none21.910.869261
12.
 
Canon XT APS-C 8.0 3456 2304none21.810.863760
13.
 
Olympus E-M1 Four Thirds 15.9 4608 34561080/30p23.012.775773
14.
 
Olympus E-M5 II Four Thirds 15.9 4608 34561080/60p23.012.584273
15.
 
Panasonic G5 Four Thirds 15.9 4608 34561080/60p21.411.661861
16.
 
Panasonic GH2 Four Thirds 15.9 4608 34561080/60i21.211.365560
17.
 
Panasonic GH4 Four Thirds 15.9 4608 34564K/30p23.212.879174

Many modern cameras cannot only take still pictures, but also record videos. The GH3 indeed provides for movie recording, while the XTi does not. The highest resolution format that the GH3 can use is 1080/60p.

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Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. For example, the GH3 has an electronic viewfinder (1746k 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 GH3 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 GH3 has a higher magnification (0.67x 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 GH3 along with similar information for a selection of comparators.

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Core Features
  empty Camera
Model
Viewfinder
(Type or
000 dots)
Control
Panel
(yes/no)
LCD
Specifications
(inch/000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Max
Shutter
Speed *
Max
Shutter
Flaps *
Built-in
Flash
(yes/no)
Built-in
Image
Stab
1.
 
Canon XTioptical n2.5 / 230 fixed n 1/4000s 3.0/s Y n
2.
 
Panasonic GH31746 n3.0 / 614 swivel Y 1/4000s 6.0/s Y n
3.
 
Canon 40Doptical Y3.0 / 230 fixed n 1/8000s 6.5/s Y n
4.
 
Canon Rebeloptical n1.8 / 118 fixed n 1/4000s 2.5/s Y n
5.
 
Canon T1ioptical n3.0 / 920 fixed n 1/4000s 3.4/s Y n
6.
 
Canon T2ioptical n3.0 / 1040 fixed n 1/4000s 3.7/s Y n
7.
 
Canon T3optical n2.7 / 230 fixed n 1/4000s 3.0/s Y n
8.
 
Canon T4ioptical n3.0 / 1040 swivel Y 1/4000s 5.0/s Y n
9.
 
Canon T6ioptical n3.0 / 1040 swivel Y 1/4000s 5.0/s Y n
10.
 
Canon XSoptical n2.5 / 230 fixed n 1/4000s 3.0/s Y n
11.
 
Canon XSioptical n3.0 / 230 fixed n 1/4000s 3.5/s Y n
12.
 
Canon XToptical n1.8 / 115 fixed n 1/4000s 3.0/s Y n
13.
 
Olympus E-M12360 n3.0 / 1037 tilting Y 1/8000s 10.0/s n Y
14.
 
Olympus E-M5 II2360 n3.0 / 1037 swivel Y 1/8000s 10.0/s n Y
15.
 
Panasonic G51440 n3.0 / 920 swivel Y 1/4000s 6.0/s Y n
16.
 
Panasonic GH21534 n3.0 / 460 swivel n 1/4000s 3.0/s Y n
17.
 
Panasonic GH42359 n3.0 / 1036 swivel Y 1/8000s 12.0/s Y n
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The GH3 has a touchscreen, while the XTi has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.

The GH3 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 XTi does not have a selfie-screen.

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 GH3 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 GH3 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 GH3 uses SDXC cards.

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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-GH3 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
  empty Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Canon XTiY- / ----2.0---
2.
 
Panasonic GH3Ystereo / monoYYmini2.0Y--
3.
 
Canon 40DY- / ----2.0---
4.
 
Canon RebelY- / ----1.1---
5.
 
Canon T1iYmono / mono--mini2.0---
6.
 
Canon T2iYstereo / -Y-mini2.0---
7.
 
Canon T3Ystereo / mono--mini2.0---
8.
 
Canon T4iYstereo / monoY-mini2.0---
9.
 
Canon T6iYstereo / monoY-mini2.0YY-
10.
 
Canon XSY- / ----2.0---
11.
 
Canon XSiY- / ---mini2.0---
12.
 
Canon XTY- / ----2.0---
13.
 
Olympus E-M1Ystereo / monoY-micro2.0Y--
14.
 
Olympus E-M5 IIYstereo / monoY-micro2.0Y--
15.
 
Panasonic G5Ystereo / mono--mini2.0---
16.
 
Panasonic GH2Ystereo / monoY-mini2.0---
17.
 
Panasonic GH4Ystereo / monoYYmicro2.0YY-

It is notable that the GH3 offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the XTi does not provide wifi capability.

Studio photographers will appreciate that the Panasonic GH3 (unlike the XTi) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the XTi and the GH3 have been discontinued, but can regularly be found used on ebay. The XTi was replaced by the Canon Xsi, while the GH3 was followed by the Panasonic GH4. Further information on the features and operation of the XTi and GH3 can be found, respectively, in the Canon XTi Manual (free pdf) or the online Panasonic GH3 Manual.

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Review summary

So how do things add up? Which of the two cameras – the Canon XTi or the Panasonic GH3 – has the upper hand? Is one clearly better than the other? A synthesis of the relative strong points of each of the models is listed below.

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Arguments in favor of the Canon EOS Rebel XTi:

  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • More compact: Is smaller (127x84mm vs 133x93mm) and thus needs less room in the bag.
  • More affordable: Was introduced into a lower priced category (38 percent cheaper at launch).
  • More heavily discounted: Has been available for much longer (launched in August 2006).

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Advantages of the Panasonic Lumix DMC-GH3:

  • More detail: Has more megapixels (15.9 vs 10.1MP), which boosts linear resolution by 23%.
  • Better image quality: Scores markedly higher (9 points) in the DXO overall evaluation.
  • More dynamic range: Captures a broader range of light and dark details (1.4 EV of extra DR).
  • Broader imaging potential: Can capture not only stills but also 1080/60p 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 (0.67x 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 (614k 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.
  • Faster burst: Shoots at higher frequency (6 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.
  • Longer lasting: Gets more shots (540 versus 370) out of a single battery charge.
  • Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
  • 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.
  • Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
  • More modern: Reflects 6 years of technical progress since the XTi launch.

If the count of individual advantages (bullet points above) is taken as a guide, the GH3 is the clear winner of the contest (21 : 4 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 wedding photographer will view the differences between cameras in a way that diverges from the perspective of a travel photog, and a person interested in cityscapes has distinct needs from a macro shooter. Hence, the decision which camera is best and worth buying is often a very personal one.

XTi 04:21 GH3

How about other alternatives? Do the specifications of the Canon XTi and the Panasonic GH3 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 specs-based evaluation of cameras can be instructive in revealing their potential as photographic tools, it says little about, for example, the shooting experience and imaging performance of the XTi and the GH3 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.

Expert reviews

This is why expert reviews 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.

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Expert Camera Reviews
  empty  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price
Street
Price
1.
 
Canon XTi..+ +..+ +o4/5 Aug 2006 US$ 799ebay.com
2.
 
Panasonic GH35/5+ +..79/1004.5/54.5/5 Sep 2012 US$ 1 299ebay.com
3.
 
Canon 40D..+ +..+ +4.5/54.5/5 Aug 2007 US$ 1 299ebay.com
4.
 
Canon Rebel......+ +.... Aug 2003 US$ 899ebay.com
5.
 
Canon T1i..+ +..74/1004.5/54.5/5 Mar 2009 US$ 799ebay.com
6.
 
Canon T2i..+ +..77/1004/54.5/5 Feb 2010 US$ 699ebay.com
7.
 
Canon T3..80/100..69/1004/54.5/5 Feb 2011 US$ 449ebay.com
8.
 
Canon T4i4/5+ +..77/1004.5/54.5/5 Jun 2012 US$ 849ebay.com
9.
 
Canon T6i5/5....75/1004.5/54.5/5 Feb 2015 US$ 749ebay.com
10.
 
Canon XS..82/100..+ +3.5/54.5/5 Jun 2008 US$ 449ebay.com
11.
 
Canon XSi..+ +..+ +4/54.5/5 Jan 2008 US$ 799ebay.com
12.
 
Canon XT..80/100..+ +o.. Feb 2005 US$ 899ebay.com
13.
 
Olympus E-M15/5+ +..84/1004.5/54.5/5 Sep 2013 US$ 1 399ebay.com
14.
 
Olympus E-M5 II5/5+ +4.5/581/1005/55/5 Feb 2015 US$ 1 099ebay.com
15.
 
Panasonic G53/5+ +....4.5/54.5/5 Jul 2012 US$ 599ebay.com
16.
 
Panasonic GH25/5+ +..79/1004.5/55/5 Sep 2010 US$ 899ebay.com
17.
 
Panasonic GH45/5+ +..85/1005/55/5 Feb 2014 US$ 1 499ebay.com
Note: (+ +) 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. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and comparisons of ratings among very different cameras or across long time periods have little meaning. It should also be noted that some of the review sites have over time altered the way they render their verdicts.

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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 GH3

    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 GH3
    Camera Type Digital single lens reflex Mirrorless system camera
    Camera Lens Canon EF mount lenses Micro Four Thirds lenses
    Launch Date August 2006 September 2012
    Launch Price USD 799 USD 1,299
    Sensor Specs Canon XTi Panasonic GH3
    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 15.9 Megapixels
    Image Resolution 3888 x 2592 pixels 4608 x 3456 pixels
    Pixel Pitch 5.71 μm 3.76 μm
    Pixel Density 3.07 MP/cm2 7.08 MP/cm2
    Moiré control Anti-Alias filter Anti-Alias filter
    Movie Capability no Video 1080/60p Video
    ISO Setting 100 - 1,600 ISO 200 - 12,800 ISO
    ISO Boost no Enhancement 125 - 25,600 ISO
    Image Processor DIGIC II Venus VII FHD
    DXO Sensor Quality (score) 62 71
    DXO Color Depth (bits) 22.1 22.7
    DXO Dynamic Range (EV) 11.0 12.4
    DXO Low Light (ISO) 664 812
    Screen Specs Canon XTi Panasonic GH3
    Viewfinder Type Optical viewfinder Electronic viewfinder
    Viewfinder Field of View 95% 100%
    Viewfinder Magnification 0.49x 0.67x
    Viewfinder Resolution 1746k dots
    LCD Framing Live View
    Rear LCD Size 2.5inch 3.0inch
    LCD Resolution 230k dots 614k dots
    LCD Attachment Fixed screen Swivel screen
    Touch Input no Touchscreen Touchscreen
    Shooting Specs Canon XTi Panasonic GH3
    Focus System Phase-detect AF Contrast-detect AF
    Continuous Shooting 3 shutter flaps/s 6 shutter flaps/s
    Electronic Shutterno E-ShutterYES
    Time-Lapse Photographyno IntervalometerIntervalometer built-in
    Fill Flash Built-in Flash Built-in Flash
    Storage Medium CF cards SDXC cards
    Single or Dual Card Slots Single card slot Single card slot
    Connectivity Specs Canon XTi Panasonic GH3
    External Flash Hotshoe Hotshoe
    Studio Flash no PC Sync PC Sync socket
    USB Connector USB 2.0 USB 2.0
    HDMI Port no HDMI mini HDMI
    Microphone Port no MIC socket External MIC port
    Headphone Socket no Headphone port Headphone port
    Wifi Support no Wifi Wifi built-in
    Body Specs Canon XTi Panasonic GH3
    Environmental Sealingnot weather sealedWeathersealed body
    Battery Type Canon NB-2LH Panasonic DMW-BLF19
    Battery Life (CIPA)370 shots per charge540 shots per charge
    Body Dimensions 127 x 84 x 65 mm
    (5.0 x 3.3 x 2.6 in)
    133 x 93 x 82 mm
    (5.2 x 3.7 x 3.2 in)
    Camera Weight 556 g (19.6 oz) 550 g (19.4 oz)
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