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Canon G7 X Mark III vs Olympus E-300

The Canon PowerShot G7 X Mark III and the Olympus Evolt E-300 are two digital cameras that were announced, respectively, in July 2019 and September 2004. The G7X Mark III is a fixed lens compact, while the E-300 is a DSLR. The cameras are based on an one-inch (G7X Mark III) and a Four Thirds (E-300) sensor. The Canon has a resolution of 20 megapixels, whereas the Olympus provides 8 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-300
Canon G7 X Mark III   Olympus E-300
Fixed lens compact camera Digital single lens reflex
24-100mm f/1.8-2.8 Four Thirds lenses
20 MP – 1" sensor 8 MP – Four Thirds sensor
4K/30p Video no Video
ISO 125-12,800 (125 - 25,600) ISO 100-400 (100 - 1,600)
No viewfinder, LCD framing Optical viewfinder
3.0" LCD – 1040k dots 1.8" LCD – 134k dots
Tilting touchscreen Fixed screen (not touch-sensitive)
30 shutter flaps per second 2.5 shutter flaps per second
235 shots per battery charge750 shots per battery charge
105 x 61 x 41 mm, 304 g 147 x 85 x 64 mm, 624 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 Evolt E-300? 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 physical size and weight of the Canon G7 X Mark III and the Olympus E-300 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-300 is only available in black.

Size Canon G7 X Mark III vs Olympus E-300
Compare G7X Mark III versus E-300 top
Comparison G7X Mark III or E-300 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Olympus E-300 is considerably larger (95 percent) than the Canon G7 X Mark III. In this context, it is worth noting that neither the G7X Mark III nor the E-300 are weather-sealed.

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-300 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-300 and their specifications in the Four Thirds Lens Catalog.

Concerning battery life, the G7X Mark III gets 235 shots out of its Canon NB-13L battery, while the E-300 can take 750 images on a single charge of its Olympus 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
  empty Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price
Street
Price
1.
 
Canon G7 X Mark III 105 mm 61 mm 41 mm 304 g 235 n Jul 2019 US$ 749 amazon.com
2.
 
Olympus E-300 147 mm 85 mm 64 mm 624 g 750 n Sep 2004 US$ 799ebay.com
3.
 
Canon 350D 127 mm 94 mm 64 mm 540 g 400 n Feb 2005 US$ 899ebay.com
4.
 
Canon G5 X 112 mm 76 mm 44 mm 353 g 210 n Oct 2015 US$ 799ebay.com
5.
 
Canon G5 X Mark II 111 mm 61 mm 46 mm 340 g 230 n Jul 2019 US$ 899ebay.com
6.
 
Canon G7 X 103 mm 60 mm 40 mm 304 g 210 n Sep 2014 US$ 699ebay.com
7.
 
Canon G7 X Mark II 106 mm 61 mm 42 mm 319 g 265 n Feb 2016 US$ 699ebay.com
8.
 
Canon M50 116 mm 88 mm 59 mm 390 g 235 n Feb 2018 US$ 779ebay.com
9.
 
Canon SX740 110 mm 64 mm 40 mm 299 g 265 n Jul 2018 US$ 399 amazon.com
10.
 
Fujifilm XF10 113 mm 64 mm 41 mm 279 g 330 n Jul 2018 US$ 499ebay.com
11.
 
Leica Digilux 3 146 mm 87 mm 77 mm 606 g 750 n Sep 2006 US$ 1 499ebay.com
12.
 
Olympus E-330 140 mm 87 mm 72 mm 637 g 750 n Jan 2006 US$ 999ebay.com
13.
 
Olympus E-500 130 mm 95 mm 66 mm 479 g 750 n Sep 2005 US$ 599ebay.com
14.
 
Panasonic L1 146 mm 87 mm 64 mm 606 g 750 n Feb 2006 US$ 999ebay.com
15.
 
Panasonic TZ200 111 mm 65 mm 45 mm 340 g 370 n Feb 2018 US$ 799 amazon.com
16.
 
Sony RX100 VI 102 mm 58 mm 43 mm 301 g 240 n Jun 2018 US$ 1 199ebay.com
17.
 
Sony ZV-1 105 mm 60 mm 44 mm 294 g 260 n May 2020 US$ 799ebay.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-300, 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 imaging sensor is at the core of digital cameras and its size is one of the main determining factors 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. 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 G7 X Mark III features an one-inch sensor and the Olympus E-300 a Four Thirds sensor. The sensor area in the E-300 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-300 offers a 4:3 aspect.

Canon G7 X Mark III and Olympus E-300 sensor measures

Despite having a smaller sensor, the Canon G7 X Mark III offers a higher resolution of 20 megapixels, compared with 8 MP of the Olympus E-300. 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 5.30μm for the E-300). However, it should be noted that the G7X Mark III is much more recent (by 14 years and 9 months) than the E-300, 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-300 are 16.3 x 12.2 inches or 41.5 x 31.1 cm for good quality, 13.1 x 9.8 inches or 33.2 x 24.9 cm for very good quality, and 10.9 x 8.2 inches or 27.6 x 20.7 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 Evolt E-300 are ISO 100 to ISO 400, with the possibility to increase the ISO range to 100-1600.

In terms of underlying technology, the G7X Mark III is build around a BSI-CMOS sensor, while the E-300 uses a CCD 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-300 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"). 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 G7 X Mark III 1-inch 20.0 5472 36484K/30p22.212.458365
2.
 
Olympus E-300 Four Thirds 8.0 3264 2448none20.410.1-4048
3.
 
Canon 350D APS-C 8.0 3456 2304none21.810.863760
4.
 
Canon G5 X 1-inch 20.0 5472 36481080/60p21.412.347162
5.
 
Canon G5 X Mark II 1-inch 20.0 5472 36484K/30p22.212.458365
6.
 
Canon G7 X 1-inch 20.0 5472 36481080/60p23.012.755671
7.
 
Canon G7 X Mark II 1-inch 20.0 5472 36481080/60p21.811.926062
8.
 
Canon M50 APS-C 24.0 6000 40004K/24p23.813.3168481
9.
 
Canon SX740 1/2.3 20.2 5184 38884K/30p20.612.1105051
10.
 
Fujifilm XF10 APS-C 24.0 6000 40004K/15p24.013.4184483
11.
 
Leica Digilux 3 Four Thirds 7.4 3136 2352none21.010.612753
12.
 
Olympus E-330 Four Thirds 7.4 3136 2352none20.810.47352
13.
 
Olympus E-500 Four Thirds 8.0 3264 2448none20.710.34551
14.
 
Panasonic L1 Four Thirds 7.4 3136 2352none20.810.48052
15.
 
Panasonic TZ200 1-inch 20.0 5472 36484K/30p22.012.244964
16.
 
Sony RX100 VI 1-inch 20.0 5472 36484K/30p22.112.347864
17.
 
Sony ZV-1 1-inch 20.0 5472 36484K/30p22.212.666966
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-300 does not. The highest resolution format that the G7X Mark III can use is 4K/30p.

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Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. For example, the E-300 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 adjacent table lists some of the other core features of the Canon G7 X Mark III and Olympus E-300 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 G7 X Mark IIInone n3.0 / 1040 tilting Y 1/2000s 30/s Y Y
2.
 
Olympus E-300optical n1.8 / 134 fixed n 1/4000s 2.5/s Y n
3.
 
Canon 350Doptical n1.8 / 115 fixed n 1/4000s 3.0/s Y n
4.
 
Canon G5 X2360 n3.0 / 1040 swivel Y 1/2000s 5.9/s Y Y
5.
 
Canon G5 X Mark II2360 n3.0 / 1040 tilting Y 1/2000s 30/s Y Y
6.
 
Canon G7 Xnone n3.0 / 1040 tilting Y 1/2000s 6.5/s Y Y
7.
 
Canon G7 X Mark IInone n3.0 / 1040 tilting Y 1/2000s 8.0/s Y Y
8.
 
Canon M502360 n3.0 / 1040 swivel Y 1/4000s 10.0/s Y n
9.
 
Canon SX740none n3.0 / 922 tilting n 1/3200s 10.0/s Y Y
10.
 
Fujifilm XF10none n3.0 / 1040 fixed Y 1/4000s 6.0/s Y n
11.
 
Leica Digilux 3optical n2.5 / 207 fixed n 1/4000s 3.0/s Y n
12.
 
Olympus E-330optical n2.5 / 215 tilting n 1/4000s 3.0/s Y n
13.
 
Olympus E-500optical n2.5 / 215 fixed n 1/4000s 2.5/s Y n
14.
 
Panasonic L1optical n2.5 / 207 fixed n 1/4000s 3.0/s Y n
15.
 
Panasonic TZ2002330 n3.0 / 1240 fixed Y 1/2000s 10.0/s Y Y
16.
 
Sony RX100 VI2359 n3.0 / 1229 tilting Y 1/2000s 24.0/s Y Y
17.
 
Sony ZV-1none n3.0 / 922 swivel Y 1/2000s 24.0/s n 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 G7X Mark III has a touchscreen, while the E-300 has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.

The G7X Mark III has an articulated LCD that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in snapping selfies. In contrast, the E-300 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 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-300 uses Compact Flash or xD Picture cards. The E-300 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.

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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 PowerShot G7 X Mark III and Olympus Evolt E-300 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 G7 X Mark III-stereo / monoY-micro3.1Y-Y
2.
 
Olympus E-300Y- / ----2.0---
3.
 
Canon 350DY- / ----2.0---
4.
 
Canon G5 XYstereo / mono--mini2.0YY-
5.
 
Canon G5 X Mark II-stereo / mono--micro3.1Y-Y
6.
 
Canon G7 X-stereo / mono--micro2.0YY-
7.
 
Canon G7 X Mark II-stereo / mono--micro2.0YY-
8.
 
Canon M50Ystereo / monoY-micro2.0Y-Y
9.
 
Canon SX740-stereo / mono--micro2.0Y-Y
10.
 
Fujifilm XF10-stereo / monoY-micro2.0Y-Y
11.
 
Leica Digilux 3Ystereo / mono---2.0---
12.
 
Olympus E-330Y- / ----2.0---
13.
 
Olympus E-500Y- / ----2.0---
14.
 
Panasonic L1Y- / ----2.0---
15.
 
Panasonic TZ200-stereo / mono--micro2.0Y-Y
16.
 
Sony RX100 VI-stereo / mono--micro2.0YYY
17.
 
Sony ZV-1Ystereo / monoY-micro2.0Y-Y

It is notable that the G7X Mark III offers wifi support, while the E-300 does not. Wifi can be a very convenient means to transfer image data to an off-camera location.

The G7X Mark III is a recent model that features in the current product line-up of Canon. In contrast, the E-300 has been discontinued (but can be found pre-owned on ebay). As a replacement in the same line of cameras, the E-300 was succeeded by the Olympus E-330. Further information on the features and operation of the G7X Mark III and E-300 can be found, respectively, in the Canon G7 X Mark III Manual (free pdf) or the online Olympus E-300 Manual.

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Review summary

So what conclusions can be drawn? Is the Canon G7 X Mark III better than the Olympus E-300 or vice versa? The listing below highlights the relative strengths of the two models.

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Advantages of the Canon PowerShot G7 X Mark III:

  • More detail: Offers more megapixels (20 vs 8MP) with a 61% 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 1.8") for image review and settings control.
  • More detailed LCD: Has a higher resolution rear screen (1040k vs 134k dots).
  • More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
  • Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
  • More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
  • Faster burst: Shoots at higher frequency (30 vs 2.5 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-300 requires a separate lens.
  • More compact: Is smaller (105x61mm vs 147x85mm) and thus needs less room in the bag.
  • Less heavy: Is lighter even though it comes with a built-in lens (unlike the E-300).
  • Easier travel charging: Can be conveniently charged via its USB port.
  • Sharper images: Has hand-shake reducing image stabilization built-in.
  • 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 14 years and 9 months of technical progress since the E-300 launch.

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Arguments in favor of the Olympus Evolt E-300:

  • Easier framing: Has an optical viewfinder for image composition and settings control.
  • Faster shutter: Has higher mechanical shutter speed (1/4000s 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 lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
  • 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 September 2004).

If the number of relative strengths (bullet points above) is taken as a guide, the G7X Mark III is the clear winner of the match-up (20 : 7 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 20:07 E-300

How about other alternatives? Do the specifications of the Canon G7 X Mark III and the Olympus E-300 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 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 G7X Mark III or the E-300 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

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 G7 X Mark III..+ +4/581/1004/5.. Jul 2019 US$ 749 amazon.com
2.
 
Olympus E-300......+o4.5/5 Sep 2004 US$ 799ebay.com
3.
 
Canon 350D..80/100..+ +o.. Feb 2005 US$ 899ebay.com
4.
 
Canon G5 X5/5+ +..78/1004.5/54.5/5 Oct 2015 US$ 799ebay.com
5.
 
Canon G5 X Mark II4/5+4/582/100..4/5 Jul 2019 US$ 899ebay.com
6.
 
Canon G7 X4/5+ +..77/1004.5/54.5/5 Sep 2014 US$ 699ebay.com
7.
 
Canon G7 X Mark II4.5/5+ +..81/1004.5/54.5/5 Feb 2016 US$ 699ebay.com
8.
 
Canon M50..+4/579/100..3.5/5 Feb 2018 US$ 779ebay.com
9.
 
Canon SX740..+3.5/5..4/54/5 Jul 2018 US$ 399 amazon.com
10.
 
Fujifilm XF10....4/575/1004/54.5/5 Jul 2018 US$ 499ebay.com
11.
 
Leica Digilux 3............ Sep 2006 US$ 1 499ebay.com
12.
 
Olympus E-330......+o.. Jan 2006 US$ 999ebay.com
13.
 
Olympus E-500..76/100..+ +.... Sep 2005 US$ 599ebay.com
14.
 
Panasonic L1..85/100..+..3.5/5 Feb 2006 US$ 999ebay.com
15.
 
Panasonic TZ200..+ +4.5/581/1004.5/54.5/5 Feb 2018 US$ 799 amazon.com
16.
 
Sony RX100 VI4.5/5+ +..83/1004/54.5/5 Jun 2018 US$ 1 199ebay.com
17.
 
Sony ZV-14/5+4/585/1004/54.5/5 May 2020 US$ 799ebay.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. 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. 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 use the search menu below. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.

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    Specifications: Canon G7 X Mark III vs Olympus E-300

    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-300
    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 September 2004
    Launch Price USD 749 USD 799
    Sensor Specs Canon G7 X Mark III Olympus E-300
    Sensor Technology BSI-CMOS CCD
    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 8 Megapixels
    Image Resolution 5472 x 3648 pixels 3264 x 2448 pixels
    Pixel Pitch 2.41 μm 5.30 μm
    Pixel Density 17.18 MP/cm2 3.55 MP/cm2
    Moiré control Anti-Alias filter Anti-Alias filter
    Movie Capability 4K/30p Video no Video
    ISO Setting 125 - 12,800 ISO 100 - 400 ISO
    ISO Boost 125 - 25,600 ISO 100 - 1,600 ISO
    Image Processor DIGIC 8 TruePic
    Screen Specs Canon G7 X Mark III Olympus E-300
    Viewfinder Type no viewfinder Optical viewfinder
    Viewfinder Field of View 95%
    Viewfinder Magnification 0.5x
    LCD Framing Live View
    Rear LCD Size 3.0inch 1.8inch
    LCD Resolution 1040k dots 134k dots
    LCD Attachment Tilting screen Fixed screen
    Touch Input Touchscreen no Touchscreen
    Shooting Specs Canon G7 X Mark III Olympus E-300
    Focus System Contrast-detect AF Phase-detect AF
    Manual Focusing AidFocus Peakingno Peaking Feature
    Continuous Shooting 30 shutter flaps/s 2.5 shutter flaps/s
    Electronic Shutterup to 1/25600sno E-Shutter
    Time-Lapse PhotographyIntervalometer built-inno Intervalometer
    Fill Flash Built-in Flash Built-in Flash
    Storage Medium SDXC cards CF or XD cards
    Single or Dual Card Slots Single card slot Dual card slots
    Connectivity Specs Canon G7 X Mark III Olympus E-300
    External Flash no Hotshoe Hotshoe
    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-300
    Battery Type Canon NB-13L Olympus 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)
    147 x 85 x 64 mm
    (5.8 x 3.3 x 2.5 in)
    Camera Weight 304 g (10.7 oz) 624 g (22.0 oz)
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