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Canon 100D vs Panasonic G3

The Canon EOS 100D (called Canon SL1 in some regions) and the Panasonic Lumix DMC-G3 are two digital cameras that were announced, respectively, in March 2013 and May 2011. The 100D is a DSLR, while the G3 is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (100D) and a Four Thirds (G3) sensor. The Canon has a resolution of 17.9 megapixels, whereas the Panasonic provides 15.8 MP. Read on to find out how these two cameras compare with respect to their body size, their sensors, their features, their input-output connections, and their reception by expert reviewers.

Headline Specifications
Canon 100D   Panasonic G3
Canon 100D Panasonic G3
Digital single lens reflex Mirrorless system camera
Canon EF mount lenses Micro Four Thirds lenses
17.9 MP, APS-C Sensor 15.8 MP, Four Thirds Sensor
1080/30p Video 1080/60i Video
ISO 100-12800 (100-25600) ISO 160-6400
Optical viewfinder Electronic viewfinder (1440k dots)
3.0" LCD, 1040k dots 3.0" LCD, 460k dots
Fixed touchscreen Swivel touchscreen
4.9 shutter flaps per second 4 shutter flaps per second
380 shots per battery charge270 shots per battery charge
117 x 91 x 69 mm, 407 g 115 x 84 x 47 mm, 336 g

Body comparison: Canon 100D vs Panasonic G3

The side-by-side display below illustrates the physical size and weight of the Canon 100D and the Panasonic G3. 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 width, height and depth dimensions are rounded to the nearest millimeter.

The 100D can be obtained in two different colors (black, white), while the G3 is available in four color-versions (black, brown, red, white).

Compare Canon 100D and Panasonic G3
Compare 100D versus G3 top
Compare 100D or G3 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Panasonic G3 is notably smaller (9 percent) than the Canon 100D. Moreover, the G3 is markedly lighter (17 percent) than the 100D. In this context, it is worth noting that neither the 100D 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 (100D) 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.

Concerning battery life, the 100D gets 380 shots out of its LP-E12 battery, while the G3 can take 270 images on a single charge of its DMW-BLD10 power pack.

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, 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 100D» 4.6 in 3.6 in 2.7 in 14.4 oz 380 n Mar 2013 549- i Canon 100D
 
Panasonic G3« 4.5 in 3.3 in 1.9 in 11.9 oz 270 n May 2011 599- i Panasonic G3
 
Canon 4000D« » 5.1 in 4.0 in 3.0 in 15.4 oz 500 n Feb 2018 399 i i Canon 4000D
 
Canon 200D« » 4.8 in 3.7 in 2.8 in 16.0 oz 650 n Jun 2017 549 i i Canon 200D
 
Canon 7D II« » 5.9 in 4.4 in 3.1 in 32.1 oz 670 Y Sep 2014 1,799 i i Canon 7D II
 
Canon 1200D« » 5.1 in 3.9 in 3.1 in 16.9 oz 500 n Feb 2014 449- i Canon 1200D
 
Canon 700D« » 5.2 in 3.9 in 3.1 in 20.5 oz 440 n Mar 2013 649- i Canon 700D
 
Canon G16« » 4.3 in 3.0 in 1.6 in 12.6 oz 360 n Aug 2013 549 i i Canon G16
 
Canon 650D« » 5.2 in 3.9 in 3.1 in 20.3 oz 440 n Jun 2012 849- i Canon 650D
 
Canon M« » 4.3 in 2.6 in 1.3 in 10.5 oz 230 n Jul 2012 599- i Canon M
 
Canon 600D« » 5.2 in 3.9 in 3.1 in 20.1 oz 440 n Feb 2011 599- i Canon 600D
 
Panasonic G6« » 4.8 in 3.3 in 2.8 in 13.8 oz 340 n Apr 2013 599- i Panasonic G6
 
Panasonic G5« » 4.7 in 3.3 in 2.8 in 14.0 oz 320 n Jul 2012 599- i Panasonic G5
 
Panasonic GX1« » 4.6 in 2.7 in 1.5 in 11.2 oz 320 n Nov 2011 949- i Panasonic GX1
 
Panasonic G2« » 4.9 in 3.3 in 2.9 in 15.1 oz 360 n Mar 2010 599- i Panasonic G2
 
Panasonic GH2« » 4.9 in 3.5 in 3.0 in 15.6 oz 330 n Sep 2010 1,499- i Panasonic GH2

Any camera decision will obviously take relative prices into account. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The 100D was somewhat cheaper (by 8 percent) than the G3 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: Canon 100D vs Panasonic G3

The size of the imaging sensor is a crucial determinant 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. Moreover, a large sensor camera will give the photographer more control over depth-of-field in the image and, thus, the ability to better 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 100D features an APS-C sensor and the Panasonic G3 a Four Thirds sensor. The sensor area in the G3 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 100D has a native 3:2 aspect ratio, while the one in the G3 offers a 4:3 aspect.

Canon 100D and Panasonic G3 sensor measures

With 17.9MP, the 100D offers a higher resolution than the G3 (15.8MP), but the 100D nevertheless has larger individual pixels (pixel pitch of 4.31μm versus 3.77μm for the G3) due to its larger sensor. Moreover, the 100D is a somewhat more recent model (by 1 year and 10 months) than the G3, and its sensor might have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixels.

The 100D has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during video recording.

The Canon EOS 100D has a native sensitivity range from ISO 100 to ISO 12800, which can be extended to ISO 100-25600. The corresponding ISO settings for the Panasonic Lumix DMC-G3 are ISO 160 to ISO 6400 (no boost).

100D versus G3 MP

Consistent information on actual sensor performance is available from DXO Mark for many cameras. 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 review, the 100D has a notably higher overall DXO score than the G3 (overall score 7 points higher), which gives it an advantage in terms of imaging quality. This advantage is based on 0.8 bits higher color depth, 0.7 EV in additional dynamic range, and 0.3 stops in additional low light sensitivity. The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

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 100D» APS-C 17.9 5184 34561080/30p21.811.384363Canon 100D
 
Panasonic G3« Four Thirds 15.8 4592 34481080/60i21.010.666756Panasonic G3
 
Canon 4000D« » APS-C 17.9 5184 34561080/30p21.911.469563Canon 4000D
 
Canon 200D« » APS-C 24.0 6000 40001080/60p23.613.4104179Canon 200D
 
Canon 7D II« » APS-C 20.0 5472 36481080/60p22.411.8108270Canon 7D II
 
Canon 1200D« » APS-C 17.9 5184 34561080/30p21.911.372463Canon 1200D
 
Canon 700D« » APS-C 17.9 5184 34561080/30p21.711.268161Canon 700D
 
Canon G16« » 1/1.7 12.0 4000 30001080/60p21.011.723054Canon G16
 
Canon 650D« » APS-C 17.9 5184 34561080/30p21.711.272262Canon 650D
 
Canon M« » APS-C 17.9 5184 34561080/30p22.111.282765Canon M
 
Canon 600D« » APS-C 17.9 5184 34561080/30p22.111.579365Canon 600D
 
Panasonic G6« » Four Thirds 15.9 4608 34561080/60p21.311.563961Panasonic G6
 
Panasonic G5« » Four Thirds 15.9 4608 34561080/60p----Panasonic G5
 
Panasonic GX1« » Four Thirds 15.8 4592 34481080/60p20.810.670355Panasonic GX1
 
Panasonic G2« » Four Thirds 12.0 4000 3000720/30p21.210.349353Panasonic G2
 
Panasonic GH2« » Four Thirds 15.9 4608 34561080/60i21.211.365560Panasonic GH2

Many modern cameras cannot only take still pictures, but also record videos. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the G3 provides a faster frame rate than the 100D. It can shoot movie footage at 1080/60i, while the Canon is limited to 1080/30p.

 

Feature comparison: Canon 100D vs Panasonic G3

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 100D 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 100D (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 0.54x), 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 100D, the Panasonic G3, 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)
Shutter
speed
(1/sec)
Shutter
flaps
(1/sec)
Built-in
Flash
(yes/no)
Built-in
Image
Stab
Camera
Model
 
Canon 100D»optical n 3.0 1040 fixed Y 4000 4.9 Y n Canon 100D
 
Panasonic G3«1440 n 3.0 460 swivel Y 4000 4.0 Y n Panasonic G3
 
Canon 4000D« »optical n 2.7 230 fixed n 4000 3.0 Y n Canon 4000D
 
Canon 200D« »optical n 3.0 1040 swivel Y 4000 5.0 Y n Canon 200D
 
Canon 7D II« »optical Y 3.0 1040 fixed n 8000 10.0 Y n Canon 7D II
 
Canon 1200D« »optical n 3.0 460 fixed n 4000 3.0 Y n Canon 1200D
 
Canon 700D« »optical n 3.0 1040 swivel Y 4000 5.0 Y n Canon 700D
 
Canon G16« »optical n 3.0 922 fixed n 4000 2.2 Y Y Canon G16
 
Canon 650D« »optical n 3.0 1040 swivel Y 4000 5.0 Y n Canon 650D
 
Canon M« »- n 3.0 1040 fixed Y 4000 4.3 n n Canon M
 
Canon 600D« »optical n 3.0 1040 swivel n 4000 3.7 Y n Canon 600D
 
Panasonic G6« »1440 n 3.0 1036 swivel Y 4000 7.0 Y n Panasonic G6
 
Panasonic G5« »1440 n 3.0 920 swivel Y 4000 6.0 Y n Panasonic G5
 
Panasonic GX1« »- n 3.0 460 fixed Y 4000 4.2 Y n Panasonic GX1
 
Panasonic G2« »1440 n 3.0 460 swivel Y 4000 2.6 Y n Panasonic G2
 
Panasonic GH2« »1534 n 3.0 460 swivel n 4000 3.0 Y n Panasonic GH2
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 100D does not have a selfie-screen.

Concerning the storage of imaging data, both the 100D and the G3 write their files to SDXC cards. The 100D supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while G3 cannot take advantage of Ultra High Speed SD cards.

 

Connectivity comparison: Canon 100D vs Panasonic G3

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 100D and Panasonic Lumix DMC-G3 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 100D»YmonomonoY-mini2.0---Canon 100D
 
Panasonic G3«Ystereomono--mini2.0---Panasonic G3
 
Canon 4000D« »Ymonomono--mini2.0YY-Canon 4000D
 
Canon 200D« »YstereomonoY-mini2.0YYYCanon 200D
 
Canon 7D II« »YstereomonoYYmini3.0---Canon 7D II
 
Canon 1200D« »Ymonomono--mini2.0---Canon 1200D
 
Canon 700D« »YstereomonoY-mini2.0---Canon 700D
 
Canon G16« »Ystereomono--mini2.0Y--Canon G16
 
Canon 650D« »YstereomonoY-mini2.0---Canon 650D
 
Canon M« »YstereomonoY-mini2.0---Canon M
 
Canon 600D« »YmonomonoY-mini2.0---Canon 600D
 
Panasonic G6« »YstereomonoY-mini2.0YY-Panasonic G6
 
Panasonic G5« »Ystereomono--mini2.0---Panasonic G5
 
Panasonic GX1« »Ystereomono--mini2.0---Panasonic GX1
 
Panasonic G2« »Ystereomono--mini2.0---Panasonic G2
 
Panasonic GH2« »YstereomonoY-mini2.0---Panasonic GH2

It is notable that the 100D has a microphone port, which is missing on the G3. Such an external microphone input can help to substantially improve the quality of audio recordings when a good external microphone is used.

Both the 100D and the G3 have been discontinued, but can regularly be found used on eBay. The G3 was replaced by the Panasonic G5, while the 100D was followed by the Canon 200D.


Review summary: Canon 100D vs Panasonic G3

So what is the bottom line? Is the Canon 100D better than the Panasonic G3 or vice versa? Below is a summary of the relative strengths of each of the two contestants.

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Arguments in favor of the Canon EOS 100D:

  • More detail: Offers more megapixels (17.9 vs 15.8MP) with a 8% higher linear resolution.
  • Better image quality: Scores markedly higher (7 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 (0.3 stops ISO advantage).
  • Better video autofocus: Features on-sensor phase-detection for more confident movie autofocus.
  • Better sound: Can connect to an external microphone for higher quality sound recording.
  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • More detailed LCD: Has a higher resolution rear screen (1040k vs 460k dots).
  • Faster burst: Shoots at higher frequency (4.9 vs 4 flaps/sec) to capture the decisive moment.
  • Longer lasting: Can take more shots (380 versus 270) on a single battery charge.
  • Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
  • More modern: Is somewhat more recent (announced 1 year and 10 months after the G3).

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Reasons to prefer the Panasonic Lumix DMC-G3:

  • Better video: Provides higher movie framerates (1080/60i versus 1080/30p).
  • 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 0.54x).
  • More flexible LCD: Has 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 71g or 17 percent) and is thus easier to take along.
  • More legacy lens friendly: Can use many non-native lenses via adapters.
  • More heavily discounted: Has been on the market for longer (launched in May 2011).

If the number of relative strengths (bullet points above) is taken as a guide, the 100D emerges as the winner of the contest (12 : 9 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.

100D 12:09 G3

In any case, while the specs-based evaluation of cameras can be instructive in revealing their potential as photographic tools, it remains incomplete and does no justice, for example, to the way the 100D or the G3 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.

Expert reviews: Canon 100D vs Panasonic G3

This is why expert reviews are important. The adjacent table relays the overall verdicts of several of the most popular camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, photographyblog).

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 100D»+78/1004/54/54/5 Mar 2013 549- i Canon 100D
 
Panasonic G3«++75/1004.5/54.5/55/5 May 2011 599- i Panasonic G3
 
Canon 4000D« »o-3.5/5-3.5/5 Feb 2018 399 i i Canon 4000D
 
Canon 200D« »++78/1004.5/54.5/54.5/5 Jun 2017 549 i i Canon 200D
 
Canon 7D II« »+84/1004/55/54.5/5 Sep 2014 1,799 i i Canon 7D II
 
Canon 1200D« »+-4/54/54.5/5 Feb 2014 449- i Canon 1200D
 
Canon 700D« »-76/1004.5/54.5/54.5/5 Mar 2013 649- i Canon 700D
 
Canon G16« »+-4.5/54.5/54.5/5 Aug 2013 549 i i Canon G16
 
Canon 650D« »++77/1004.5/54.5/54.5/5 Jun 2012 849- i Canon 650D
 
Canon M« »+-4/53.5/54/5 Jul 2012 599- i Canon M
 
Canon 600D« »o77/1004.5/55/54.5/5 Feb 2011 599- i Canon 600D
 
Panasonic G6« »++-5/5-4.5/5 Apr 2013 599- i Panasonic G6
 
Panasonic G5« »++-4.5/54.5/54.5/5 Jul 2012 599- i Panasonic G5
 
Panasonic GX1« »+77/1004.5/54.5/54.5/5 Nov 2011 949- i Panasonic GX1
 
Panasonic G2« »-72/1004/54/54.5/5 Mar 2010 599- i Panasonic G2
 
Panasonic GH2« »++79/1004.5/54.5/55/5 Sep 2010 1,499- i Panasonic GH2
Notes: ++) highly recommended; +) recommended; o) reviewed; -) not available.

Care should be taken when interpreting the review scores above, though. The ratings are only valid when referring to cameras in the same category and of the same age. Hence, a score should always be seen in the context of the camera's market launch date and its price, 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.

Canon 100D:
Check Ebay offers
Panasonic G3:
Check Ebay offers

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 a corresponding selection in the search boxes below. An 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 100D vs Panasonic G3

    Camera Specifications
    Camera Model Canon 100D Panasonic G3
    Camera Type Digital single lens reflex Mirrorless system camera
    Camera Lens Canon EF mount lenses Micro Four Thirds lenses
    Launch Date March 2013 May 2011
    Launch Price USD 549 USD 599
    Sensor Specs Canon 100D Panasonic G3
    Sensor Technology CMOS CMOS
    Sensor Format APS-C Sensor Four Thirds Sensor
    Sensor Size 22.3 x 14.9 mm 17.3 x 14.9 mm
    Sensor Area 332.27 mm2 224.9 mm2
    Sensor Diagonal 26.8 mm 21.6 mm
    Crop Factor 1.6x 2.0x
    Sensor Resolution 17.9 Megapixels 15.8 Megapixels
    Image Resolution 5184 x 3456 pixels 4592 x 3448 pixels
    Pixel Pitch 4.31 μm 3.77 μm
    Pixel Density 5.39 MP/cm2 7.04 MP/cm2
    Moiré control Anti-Alias filter Anti-Alias filter
    Movie Capability 1080/30p Video 1080/60i Video
    ISO Setting 100-12800 ISO 160-6400 ISO
    ISO Boost 100-25600 ISO no Enhancement
    Image Processor DIGIC 5 Venus FHD
    DXO Sensor Quality (score) 63 56
    DXO Color Depth (bits) 21.8 21.0
    DXO Dynamic Range (EV) 11.3 10.6
    DXO Low Light (ISO) 843 667
    Screen Specs Canon 100D Panasonic G3
    Viewfinder Type Optical viewfinder Electronic viewfinder
    Viewfinder Field of View 95% 100%
    Viewfinder Magnification 0.54x 0.70x
    Viewfinder Resolution 1440k dots
    LCD Framing Live View Live View
    Rear LCD Size 3.0 inch 3.0 inch
    LCD Resolution 1040k dots 460k dots
    LCD Attachment Fixed screen Swivel screen
    Touch Input Touchscreen Touchscreen
    Shooting Specs Canon 100D Panasonic G3
    Autofocus System Phase-detect AF Contrast-detect AF
    Maximum Shutter Speed 1/4000s 1/4000s
    Continuous Shooting 4.9 shutter flaps/s 4 shutter flaps/s
    Fill Flash Build-in Flash Build-in Flash
    Storage Medium SDXC cards SDXC cards
    Second Storage Option Single card slot Single card slot
    UHS card support UHS-I no
    Connectivity Specs Canon 100D Panasonic G3
    External Flash Hotshoe Hotshoe
    USB Connector USB 2.0 USB 2.0
    HDMI Port mini HDMI mini HDMI
    Microphone Port External MIC port no MIC socket
    Wifi Support no Wifi no Wifi
    Body Specs Canon 100D Panasonic G3
    Battery Type LP-E12 power pack DMW-BLD10 power pack
    Battery Life (CIPA)380 shots per charge270 shots per charge
    Body Dimensions 117 x 91 x 69 mm
    (4.6 x 3.6 x 2.7 in)
    115 x 84 x 47 mm
    (4.5 x 3.3 x 1.9 in)
    Camera Weight 407 g (14.4 oz) 336 g (11.9 oz)

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