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Canon G7 X Mark III vs Olympus E-3

The Canon PowerShot G7 X Mark III and the Olympus E-3 are two digital cameras that were revealed to the public, respectively, in July 2019 and October 2007. The G7X Mark III is a fixed lens compact, while the E-3 is a DSLR. The cameras are based on an one-inch (G7X Mark III) and a Four Thirds (E-3) sensor. The Canon has a resolution of 20 megapixels, whereas the Olympus provides 10 MP.

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

Headline Specifications
Canon G7 X Mark III
versus
Olympus E-3
Canon G7 X Mark III   Olympus E-3
Fixed lens compact camera Digital single lens reflex
24-100mm f/1.8-2.8 Four Thirds lenses
20 MP – 1" sensor 10 MP – Four Thirds sensor
4K/30p Video no Video
ISO 125-12,800 (125 - 25,600) ISO 100-3,200
No viewfinder, LCD framing Optical viewfinder
3.0" LCD – 1040k dots 2.5" LCD – 230k dots
Tilting touchscreen Swivel screen (not touch-sensitive)
30 shutter flaps per second 5 shutter flaps per second
Lens-based stabilizationIn-body stabilization
not weather sealedWeathersealed body
235 shots per battery charge750 shots per battery charge
105 x 61 x 41 mm, 304 g 142 x 116 x 75 mm, 876 g
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Going beyond this snapshot of core features and characteristics, what are the differences between the Canon PowerShot G7 X Mark III and the Olympus E-3? 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 G7 X Mark III and the Olympus E-3 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 G7X Mark III can be obtained in two different colors (black, silver), while the E-3 is only available in black.

Size Canon G7 X Mark III vs Olympus E-3
Compare G7X Mark III versus E-3 top
Comparison G7X Mark III or E-3 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Olympus E-3 is considerably larger (157 percent) than the Canon G7 X Mark III. It is noteworthy in this context that the E-3 is splash and dust-proof, while the G7X Mark III does not feature any corresponding weather-sealing.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the G7X Mark III has a lens built in, whereas the E-3 is an interchangeable lens camera that requires a separate lens. Attaching the latter will add extra weight and bulk to the setup. You can compare the optics available for the E-3 and their specifications in the Four Thirds Lens Catalog.

Concerning battery life, the G7X Mark III gets 235 shots out of its NB-13L battery, while the E-3 can take 750 images on a single charge of its BLM-1 power pack. The power pack in the G7X Mark III can be charged via the USB port, so that it is not always necessary to take the battery charger along when travelling.

The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. If you would like to visualize and compare a different camera combination, you can navigate to the CAM-parator app and make your selection from a broad list of cameras there.

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Body Specifications
    Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Canon G7 X Mark III 105 mm 61 mm 41 mm 304 g 235 n Jul 2019 749 amazon.com
2.
 
Olympus E-3 142 mm 116 mm 75 mm 876 g 750 Y Oct 2007 1,699ebay.com
3.
 
Canon G5 X Mark II 111 mm 61 mm 46 mm 340 g 230 n Jul 2019 899 amazon.com
4.
 
Canon SX740 110 mm 64 mm 40 mm 299 g 265 n Jul 2018 399 amazon.com
5.
 
Canon G7 X Mark II 106 mm 61 mm 42 mm 319 g 265 n Feb 2016 699ebay.com
6.
 
Canon G5 X 112 mm 76 mm 44 mm 353 g 210 n Oct 2015 799ebay.com
7.
 
Canon G7 X 103 mm 60 mm 40 mm 304 g 210 n Sep 2014 699ebay.com
8.
 
Leica C-LUX 113 mm 67 mm 46 mm 340 g 370 n Jun 2018 1,049 amazon.com
9.
 
Olympus E-5 142 mm 117 mm 75 mm 873 g 750 Y Sep 2010 1,699ebay.com
10.
 
Olympus E-30 142 mm 108 mm 75 mm 701 g 750 n Nov 2008 1,299ebay.com
11.
 
Olympus E-520 136 mm 92 mm 68 mm 535 g 750 n May 2008 699ebay.com
12.
 
Olympus E-510 136 mm 92 mm 68 mm 538 g 750 n Mar 2007 799ebay.com
13.
 
Olympus E-1 141 mm 104 mm 81 mm 738 g 750 Y Jun 2003 1,699ebay.com
14.
 
Panasonic FZ1000 II 136 mm 97 mm 131 mm 810 g 350 n Feb 2019 899 amazon.com
15.
 
Panasonic ZS200 111 mm 65 mm 45 mm 340 g 370 n Feb 2018 799 amazon.com
16.
 
Sony ZV-1 105 mm 60 mm 44 mm 294 g 260 n May 2020 799 amazon.com
17.
 
Sony RX100 VI 102 mm 58 mm 43 mm 301 g 240 n Jun 2018 1,199ebay.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 naturally be influenced heavily by the price. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The G7X Mark III was launched at a lower price than the E-3, despite having a lens built in. Normally, street prices remain initially close to the MSRP, but after a couple of months, the first discounts appear. 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 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 G7 X Mark III features an one-inch sensor and the Olympus E-3 a Four Thirds sensor. The sensor area in the E-3 is 94 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 2.7 and 2.0. The sensor in the G7X Mark III has a native 3:2 aspect ratio, while the one in the E-3 offers a 4:3 aspect.

Canon G7 X Mark III and Olympus E-3 sensor measures

Despite having a smaller sensor, the Canon G7 X Mark III offers a higher resolution of 20 megapixels, compared with 10 MP of the Olympus E-3. 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 2.41μm versus 4.74μm for the E-3). However, it should be noted that the G7X Mark III is much more recent (by 11 years and 8 months) than the E-3, 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 Canon G7 X Mark III implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the G7X Mark III for good quality output (200 dots per inch) amounts to 27.4 x 18.2 inches or 69.5 x 46.3 cm, for very good quality (250 dpi) 21.9 x 14.6 inches or 55.6 x 37.1 cm, and for excellent quality (300 dpi) 18.2 x 12.2 inches or 46.3 x 30.9 cm. The corresponding values for the Olympus E-3 are 18.2 x 13.7 inches or 46.3 x 34.7 cm for good quality, 14.6 x 10.9 inches or 37.1 x 27.8 cm for very good quality, and 12.2 x 9.1 inches or 30.9 x 23.2 cm for excellent quality prints.

The Canon PowerShot G7 X Mark III has a native sensitivity range from ISO 125 to ISO 12800, which can be extended to ISO 125-25600. The corresponding ISO settings for the Olympus E-3 are ISO 100 to ISO 3200 (no boost).

In terms of underlying technology, the G7X Mark III is build around a BSI-CMOS sensor, while the E-3 uses a CMOS imager. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.

G7X Mark III versus E-3 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"). The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.

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Sensor Characteristics
    Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Canon G7 X Mark III 1-inch 20.0 5472 36484K/30p22.212.458365
2.
 
Olympus E-3 Four Thirds 10.0 3648 2736none21.610.557156
3.
 
Canon G5 X Mark II 1-inch 20.0 5472 36484K/30p22.212.458365
4.
 
Canon SX740 1/2.3 20.2 5184 38884K/30p20.612.1105051
5.
 
Canon G7 X Mark II 1-inch 20.0 5472 36481080/60p21.811.926062
6.
 
Canon G5 X 1-inch 20.0 5472 36481080/60p21.811.922761
7.
 
Canon G7 X 1-inch 20.0 5472 36481080/60p23.012.755671
8.
 
Leica C-LUX 1-inch 20.0 5472 36484K/30p22.112.348164
9.
 
Olympus E-5 Four Thirds 12.2 4032 3024720/30p21.610.551956
10.
 
Olympus E-30 Four Thirds 12.2 4032 3024none21.310.453055
11.
 
Olympus E-520 Four Thirds 10.0 3648 2736none21.410.454855
12.
 
Olympus E-510 Four Thirds 10.0 3648 2736none21.210.044252
13.
 
Olympus E-1 Four Thirds 4.9 2560 1920none20.09.7-14544
14.
 
Panasonic FZ1000 II 1-inch 20.0 5472 36484K/30p22.112.454665
15.
 
Panasonic ZS200 1-inch 20.0 5472 36484K/30p22.012.244964
16.
 
Sony ZV-1 1-inch 20.0 5472 36484K/30p22.212.666966
17.
 
Sony RX100 VI 1-inch 20.0 5472 36484K/30p22.112.347864
Note: DXO values in italics represent estimates based on sensor size and age.

Many modern cameras are not only capable of taking still images, but also of capturing video footage. The G7X Mark III indeed provides movie recording capabilities, while the E-3 does not. The highest resolution format that the G7X Mark III can use is 4K/30p.

Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. For example, the E-3 has an optical viewfinder, which can be very useful when shooting in bright sunlight. In contrast, the G7X Mark III 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 G7 X Mark III, the Olympus E-3, and comparable cameras.

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Core Features
    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 G7 X Mark IIInone n3.0 / 1040 tilting Y 1/2000s 30/s Y Y
2.
 
Olympus E-3optical Y2.5 / 230 swivel n 1/8000s 5.0/s Y Y
3.
 
Canon G5 X Mark II2360 n3.0 / 1040 tilting Y 1/2000s 30/s Y Y
4.
 
Canon SX740none n3.0 / 922 tilting n 1/3200s 10.0/s Y Y
5.
 
Canon G7 X Mark IInone n3.0 / 1040 tilting Y 1/2000s 8.0/s Y Y
6.
 
Canon G5 X2360 n3.0 / 1040 swivel Y 1/2000s 5.9/s Y Y
7.
 
Canon G7 Xnone n3.0 / 1040 tilting Y 1/2000s 6.5/s Y Y
8.
 
Leica C-LUX2330 n3.0 / 1240 fixed Y 1/2000s 10.0/s Y Y
9.
 
Olympus E-5optical Y3.0 / 920 swivel n 1/8000s 5.0/s Y Y
10.
 
Olympus E-30optical Y2.7 / 230 swivel n 1/8000s 5.0/s Y Y
11.
 
Olympus E-520optical n2.7 / 215 fixed n 1/4000s 3.5/s Y Y
12.
 
Olympus E-510optical n2.5 / 215 fixed n 1/4000s 3.0/s Y Y
13.
 
Olympus E-1optical Y1.8 / 134 fixed n 1/4000s 3.0/s n n
14.
 
Panasonic FZ1000 II2360 n3.0 / 1240 swivel Y 1/4000s 12.0/s Y Y
15.
 
Panasonic ZS2002330 n3.0 / 1240 fixed Y 1/2000s 10.0/s Y Y
16.
 
Sony ZV-1none n3.0 / 922 swivel Y 1/2000s 24.0/s n Y
17.
 
Sony RX100 VI2359 n3.0 / 1229 tilting Y 1/2000s 24.0/s Y Y
Notes: *) 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 G7X Mark III has a touchscreen, while the E-3 has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.

Both cameras have an articulated rear screen that can be turned to be front-facing. This feature will be particularly appreciated by vloggers and photographers who are interested in taking selfies.

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 G7X Mark III 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 Canon G7 X Mark III 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 G7X Mark III writes its imaging data to SDXC cards, while the E-3 uses Compact Flash or xD Picture cards. The E-3 features dual card slots, which can be very useful in case a memory card fails. In contrast, the G7X Mark III only has one slot.

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 PowerShot G7 X Mark III and Olympus E-3 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
    Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Canon G7 X Mark III-stereo / monoY-micro3.1Y-Y
2.
 
Olympus E-3Y- / ----2.0---
3.
 
Canon G5 X Mark II-stereo / mono--micro3.1Y-Y
4.
 
Canon SX740-stereo / mono--micro2.0Y-Y
5.
 
Canon G7 X Mark II-stereo / mono--micro2.0YY-
6.
 
Canon G5 XYstereo / mono--mini2.0YY-
7.
 
Canon G7 X-stereo / mono--micro2.0YY-
8.
 
Leica C-LUX-stereo / mono--micro2.0Y--
9.
 
Olympus E-5Ystereo / ---mini2.0---
10.
 
Olympus E-30Y- / ----2.0---
11.
 
Olympus E-520Y- / ----2.0---
12.
 
Olympus E-510Y- / ----2.0---
13.
 
Olympus E-1Y- / ----2.0---
14.
 
Panasonic FZ1000 IIYstereo / monoY-micro2.0Y-Y
15.
 
Panasonic ZS200-stereo / mono--micro2.0Y-Y
16.
 
Sony ZV-1Ystereo / monoY-micro2.0YYY
17.
 
Sony RX100 VI-stereo / mono--micro2.0YYY

It is notable that the G7X Mark III offers wifi support, while the E-3 does not. Wifi can be a very convenient means to transfer image data to an off-camera location.

Studio photographers will appreciate that the Olympus E-3 (unlike the G7X Mark III) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

The G7X Mark III is a recent model that features in the current product line-up of Canon. In contrast, the E-3 has been discontinued (but can be found pre-owned on ebay). As a replacement in the same line of cameras, the E-3 was succeeded by the Olympus E-5. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Canon and Olympus websites.

Review summary

So how do things add up? Which of the two cameras – the Canon G7 X Mark III or the Olympus E-3 – 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 PowerShot G7 X Mark III:

  • More detail: Offers more megapixels (20 vs 10MP) with a 44% higher linear resolution.
  • Broader imaging potential: Can record not only still images but also 4K/30p movies.
  • 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 (1040k vs 230k dots).
  • Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
  • Faster burst: Shoots at higher frequency (30 vs 5 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.
  • Ready to shoot: Comes with a built-in lens, while the E-3 requires a separate lens.
  • More compact: Is smaller (105x61mm vs 142x116mm) and thus needs less room in the bag.
  • Less heavy: Is lighter even though it comes with a built-in lens (unlike the E-3).
  • Easier travel charging: Can be conveniently charged via its USB port.
  • Faster data transfer: Supports a more advanced USB protocol (3.1 vs 2.0).
  • Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
  • Easier wireless transfer: Supports Bluetooth for image sharing without cables.
  • More affordable: Was introduced at a lower price, despite coming with a built-in lens.
  • More modern: Reflects 11 years and 8 months of technical progress since the E-3 launch.

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Reasons to prefer the Olympus E-3:

  • Easier framing: Has an optical viewfinder for image composition and settings control.
  • Easier setting verification: Features a control panel on top to check shooting parameters.
  • More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/2000s) to freeze action.
  • More flexible: Makes it possible to change lenses and thus to use specialty optics.
  • Longer lasting: Gets more shots (750 versus 235) out of a single battery charge.
  • Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
  • Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
  • Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
  • Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
  • More heavily discounted: Has been around for much longer (launched in October 2007).

If the count of individual advantages (bullet points above) is taken as a guide, the G7X Mark III is the clear winner of the match-up (17 : 11 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 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.

G7X Mark III 17:11 E-3

How about other alternatives? Do the specifications of the Canon G7 X Mark III and the Olympus E-3 place the cameras among the top in their class? Find out in the latest Best Travel-Zoom Camera and Best DSLR 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 remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the G7X Mark III or the E-3. 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

This is where reviews by experts come in. The adjacent summary-table relays the overall verdicts of several of the most popular camera 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
     Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Canon G7 X Mark III..+ +4/581/1004/5.. Jul 2019 749 amazon.com
2.
 
Olympus E-3..88/100..+ +o4/5 Oct 2007 1,699ebay.com
3.
 
Canon G5 X Mark II4/5+4/582/100..4/5 Jul 2019 899 amazon.com
4.
 
Canon SX740..+3.5/5..4/54/5 Jul 2018 399 amazon.com
5.
 
Canon G7 X Mark II4.5/5+ +..81/1004.5/54.5/5 Feb 2016 699ebay.com
6.
 
Canon G5 X5/5+ +..78/1004.5/54.5/5 Oct 2015 799ebay.com
7.
 
Canon G7 X4/5+ +..77/1004.5/54.5/5 Sep 2014 699ebay.com
8.
 
Leica C-LUX....3.5/5..4.5/54/5 Jun 2018 1,049 amazon.com
9.
 
Olympus E-54/5....75/1004/54.5/5 Sep 2010 1,699ebay.com
10.
 
Olympus E-30......71/1004.5/54/5 Nov 2008 1,299ebay.com
11.
 
Olympus E-520..87/100..+ +4.5/54.5/5 May 2008 699ebay.com
12.
 
Olympus E-510..89/100..+ +3.5/54.5/5 Mar 2007 799ebay.com
13.
 
Olympus E-1......+o.. Jun 2003 1,699ebay.com
14.
 
Panasonic FZ1000 II......83/1004.5/54.5/5 Feb 2019 899 amazon.com
15.
 
Panasonic ZS200..+ +4.5/581/1004.5/54.5/5 Feb 2018 799 amazon.com
16.
 
Sony ZV-14/5..4.5/585/1004/54.5/5 May 2020 799 amazon.com
17.
 
Sony RX100 VI4.5/5+ +..83/1004/54.5/5 Jun 2018 1,199ebay.com
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

Care should be taken when interpreting the review scores above, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. Also, please note that some of the review sites have changed their methodology and reporting over time.

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Other camera comparisons

Did this review help to inform your camera decision process? If you would like to see a different side-by-side camera review, 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 G7 X Mark III vs Olympus E-3

    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 G7 X Mark III Olympus E-3
    Camera Type Fixed lens compact camera Digital single lens reflex
    Camera Lens 24-100mm f/1.8-2.8 Four Thirds lenses
    Launch Date July 2019 October 2007
    Launch Price USD 749 USD 1,699
    Sensor Specs Canon G7 X Mark III Olympus E-3
    Sensor Technology BSI-CMOS CMOS
    Sensor Format 1" Sensor Four Thirds Sensor
    Sensor Size 13.2 x 8.8 mm 17.3 x 13.0 mm
    Sensor Area 116.16 mm2 224.9 mm2
    Sensor Diagonal 15.9 mm 21.6 mm
    Crop Factor 2.7x 2.0x
    Sensor Resolution 20 Megapixels 10 Megapixels
    Image Resolution 5472 x 3648 pixels 3648 x 2736 pixels
    Pixel Pitch 2.41 μm 4.74 μm
    Pixel Density 17.18 MP/cm2 4.44 MP/cm2
    Moiré control Anti-Alias filter Anti-Alias filter
    Movie Capability 4K/30p Video no Video
    ISO Setting 125 - 12,800 ISO 100 - 3,200 ISO
    ISO Boost 125 - 25,600 ISO no Enhancement
    Image Processor DIGIC 8 TruePic III
    DXO Sensor Quality (score) .. 56
    DXO Color Depth (bits) .. 21.6
    DXO Dynamic Range (EV) .. 10.5
    DXO Low Light (ISO) .. 571
    Screen Specs Canon G7 X Mark III Olympus E-3
    Viewfinder Type no viewfinder Optical viewfinder
    Viewfinder Field of View 100%
    Viewfinder Magnification 0.58x
    Top-Level Screen no Top Display Control Panel
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 2.5inch
    LCD Resolution 1040k dots 230k dots
    LCD Attachment Tilting screen Swivel screen
    Touch Input Touchscreen no Touchscreen
    Shooting Specs Canon G7 X Mark III Olympus E-3
    Focus System Contrast-detect AF Phase-detect AF
    Manual Focusing AidFocus Peakingno Peaking Feature
    Continuous Shooting 30 shutter flaps/s 5 shutter flaps/s
    Electronic Shutterup to 1/25600sno E-Shutter
    Time-Lapse PhotographyIntervalometer built-inno Intervalometer
    Image StabilizationLens-based stabilizationIn-body stabilization
    Fill Flash Built-in Flash Built-in Flash
    Storage Medium SDXC cards CF or XD cards
    Second Storage Option Single card slot Dual card slots
    Connectivity Specs Canon G7 X Mark III Olympus E-3
    External Flash no Hotshoe Hotshoe
    Studio Flash no PC Sync PC Sync socket
    USB Connector USB 3.1 USB 2.0
    HDMI Port micro HDMI no HDMI
    Microphone Port External MIC port no MIC socket
    Wifi Support Wifi built-in no Wifi
    Bluetooth Support Bluetooth built-in no Bluetooth
    Body Specs Canon G7 X Mark III Olympus E-3
    Environmental Sealingnot weather sealedWeathersealed body
    Battery Type NB-13L BLM-1
    Battery Life (CIPA)235 shots per charge750 shots per charge
    In-Camera Charging USB charging no USB charging
    Body Dimensions 105 x 61 x 41 mm
    (4.1 x 2.4 x 1.6 in)
    142 x 116 x 75 mm
    (5.6 x 4.6 x 3.0 in)
    Camera Weight 304 g (10.7 oz) 876 g (30.9 oz)
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