Canon D30 vs G7X
The Canon EOS-D30 and the Canon PowerShot G7 X are two digital cameras that were announced, respectively, in May 2000 and September 2014. The D30 is a DSLR, while the G7X is a fixed lens compact. The cameras are based on an APS-C (D30) and an one-inch (G7X) sensor. The D30 has a resolution of 3.1 megapixels, whereas the G7X provides 20 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.
Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS-D30 and the Canon PowerShot G7 X? 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.
The physical size and weight of the Canon D30 and the Canon G7 X are illustrated in the side-by-side display below. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All width, height and depth dimensions are rounded to the nearest millimeter.
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Canon G7 X is considerably smaller (61 percent) than the Canon D30. In this context, it is worth noting that neither the D30 nor the G7X are weather-sealed.
The above size and weight comparisons are to some extent incomplete and possibly misleading, as the G7X has a lens built in, whereas the D30 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 D30 and their specifications in the Canon EF Lens Catalog.
The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. 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.
|1.||Canon D30||150 mm||107 mm||75 mm||750 g||540||n||May 2000||2,999|
|2.||Canon G7 X||103 mm||60 mm||40 mm||304 g||210||n||Sep 2014||699|
|3.||Canon T7||129 mm||101 mm||78 mm||475 g||500||n||Feb 2018||449|
|4.||Canon SL2||122 mm||93 mm||70 mm||453 g||650||n||Jun 2017||549|
|5.||Canon T7i||131 mm||100 mm||76 mm||532 g||600||n||Feb 2017||749|
|6.||Canon 80D||139 mm||105 mm||79 mm||730 g||960||Y||Feb 2016||1,199|
|7.||Canon G7 X Mark II||106 mm||61 mm||42 mm||319 g||265||n||Feb 2016||699|
|8.||Canon G5 X||112 mm||76 mm||44 mm||353 g||210||n||Oct 2015||799|
|9.||Canon G9 X||98 mm||58 mm||31 mm||209 g||220||n||Oct 2015||529|
|10.||Canon M3||111 mm||68 mm||44 mm||366 g||250||n||Feb 2015||679|
|11.||Canon 40D||146 mm||108 mm||74 mm||822 g||750||n||Aug 2007||1,299|
|12.||Canon 30D||144 mm||106 mm||74 mm||785 g||750||n||Feb 2006||1,399|
|13.||Canon 20D||144 mm||106 mm||72 mm||770 g||700||n||Aug 2004||1,499|
|14.||Canon 10D||150 mm||107 mm||75 mm||850 g||500||n||Feb 2003||1,999|
|15.||Canon Rebel||142 mm||99 mm||72 mm||649 g||400||n||Aug 2003||899|
|16.||Canon D60||150 mm||107 mm||75 mm||855 g||620||n||Feb 2002||2,999|
|17.||Sony RX100 II||102 mm||58 mm||38 mm||281 g||350||n||Jun 2013||749|
|Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.|
The price is, of course, an important factor in any camera decision. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The G7X was launched at a lower price than the D30, despite having a lens built in. 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.
The size of the sensor inside a digital camera is one of the key determinants 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. 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 more expensive and lead to bigger and heavier cameras and lenses.
Of the two cameras under consideration, the Canon D30 features an APS-C sensor and the Canon G7 X an one-inch sensor. The sensor area in the G7X is 65 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.6 and 2.7. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
Despite having a smaller sensor, the G7X offers a higher resolution of 20 megapixels, compared with 3.1 MP of the D30. 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 10.29μm for the D30). However, it should be noted that the G7X is much more recent (by 14 years and 4 months) than the D30, 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 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the G7X 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 Canon D30 are 10.8 x 7.2 inches or 27.4 x 18.3 cm for good quality, 8.6 x 5.8 inches or 21.9 x 14.6 cm for very good quality, and 7.2 x 4.8 inches or 18.3 x 12.2 cm for excellent quality prints.
The Canon EOS-D30 has a native sensitivity range from ISO 100 to ISO 1600. The corresponding ISO settings for the Canon PowerShot G7 X are ISO 125 to ISO 12800 (no boost).
Consistent information on actual sensor performance is available from DXO Mark for many cameras. This service assesses and scores the color depth ("DXO Portrait"), dynamic range ("DXO Landscape"), and low-light sensitivity ("DXO Sports") of camera sensors, and also publishes an overall camera score. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.
| DXO |
|2.||Canon G7 X||1-inch||20.0||5472||3648||1080/60p||23.0||12.7||556||71|
|7.||Canon G7 X Mark II||1-inch||20.0||5472||3648||1080/60p||..||..||..||..|
|8.||Canon G5 X||1-inch||20.0||5472||3648||1080/60p||..||..||..||..|
|9.||Canon G9 X||1-inch||20.0||5472||3648||1080/60p||21.5||12.3||495||63|
|17.||Sony RX100 II||1-inch||20.0||5472||3648||1080/60p||22.5||12.4||483||67|
Many modern cameras cannot only take still pictures, but also record videos. The G7X indeed provides for movie recording, while the D30 does not. The highest resolution format that the G7X can use is 1080/60p.
Beyond body and sensor, cameras can and do differ across a range of features. For example, the D30 has an optical viewfinder, which can be very useful when shooting in bright sunlight. In contrast, the G7X relies on live view and the rear LCD for framing. The adjacent table lists some of the other core features of the Canon D30 and Canon G7 X along with similar information for a selection of comparators.
|2.||Canon G7 X||none||n||3.0||1040||tilting||Y||1/2000s||6.5||Y||Y|
|7.||Canon G7 X Mark II||none||n||3.0||1040||tilting||Y||1/2000s||8.0||Y||Y|
|8.||Canon G5 X||2360||n||3.0||1040||swivel||Y||1/2000s||5.9||Y||Y|
|9.||Canon G9 X||none||n||3.0||1040||fixed||Y||1/2000s||6.0||Y||Y|
|17.||Sony RX100 II||optional||n||3.0||1229||tilting||n||1/2000s||10.0||Y||Y|
One feature that is present on the D30, but is missing on the G7X is a top-level LCD. While being, of course, smaller than the rear screen, the control panel conveys some of the essential shooting information and can be convenient for quick and easy settings verification.The G7X 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 D30 does not have a selfie-screen.
The Canon G7 X 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 D30 writes its imaging data to Compact Flash cards, while the G7X uses SDXC cards.
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-D30 and Canon PowerShot G7 X and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
| WiFi |
| NFC |
|2.||Canon G7 X||-||stereo||mono||-||-||micro||2.0||Y||Y||-|
|7.||Canon G7 X Mark II||-||stereo||mono||-||-||micro||2.0||Y||Y||-|
|8.||Canon G5 X||Y||stereo||mono||-||-||mini||2.0||Y||Y||-|
|9.||Canon G9 X||-||stereo||mono||-||-||micro||2.0||Y||Y||-|
|17.||Sony RX100 II||Y||stereo||mono||-||-||micro||2.0||Y||Y||-|
It is notable that the D30 has a hotshoe, while the G7X does not. This socket makes it possible to easily attach optional accessories, such as an external flash gun.
Studio photographers will appreciate that the Canon D30 (unlike the G7X) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
Both the D30 and the G7X have been discontinued, but can regularly be found used on eBay. The D30 was replaced by the Canon D60, while the G7X was followed by the Canon G7 X Mark II. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Canon website.
So what is the bottom line? Is the Canon D30 better than the Canon G7 X or vice versa? Below is a summary of the relative strengths of each of the two contestants.
Advantages of the Canon EOS-D30:
- Easier framing: Has an optical viewfinder for image composition and settings control.
- Easier setting verification: Features an LCD display on top to control shooting parameters.
- Faster shutter: Has higher mechanical shutter speed (1/4000s vs 1/2000s) to freeze action.
- More flexible: Can take a variety of interchangeable lenses, including specialty optics.
- Longer lasting: Can take more shots (540 versus 210) on a single battery charge.
- 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.
- More heavily discounted: Has been available for much longer (launched in May 2000).
Arguments in favor of the Canon PowerShot G7 X:
- More detail: Has more megapixels (20 vs 3.1MP), which boosts linear resolution by 153%.
- Broader imaging potential: Can capture not only stills but also 1080/60p video.
- 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 114k dots).
- More flexible LCD: Has a tilting screen for odd-angle shots in 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 (6.5 vs 3 flaps/sec) to capture the decisive moment.
- Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
- Ready to shoot: Comes with an integrated lens, while the D30 requires a separate lens.
- More compact: Is smaller (103x60mm vs 150x107mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight even though it has a lens built in (unlike the D30).
- Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
- Faster data transfer: Supports a more advanced USB protocol (2.0 vs 1.0).
- Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
- Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
- More affordable: Was introduced at a lower price, despite coming with a built-in lens.
- More modern: Reflects 14 years and 4 months of technical progress since the D30 launch.
If the count of individual advantages (bullet points above) is taken as a guide, the G7X is the clear winner of the contest (18 : 8 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.
How about other alternatives? Do the specifications of the Canon D30 and the Canon G7 X place the cameras among the top in their class? Find out in the latest Best DSLR Camera and Best Travel-Zoom 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 D30 and the G7X in practical situations. User reviews that are available, for instance, at amazon can sometimes shed light on these issues, but such feedback is all too often partial, inconsistent, and inaccurate.
This is why hands-on reviews by experts are important. The adjacent summary-table relays the overall verdicts of several of the most popular camera review sites (amateurphotographer [AP], cameralabs [CL], 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.
|1.||Canon D30||..||..||+ +||..||..||May 2000||2,999|
|2.||Canon G7 X||4/5||+ +||77/100||4.5/5||4.5/5||Sep 2014||699|
|3.||Canon T7||..||o||..||3.5/5||3.5/5||Feb 2018||449|
|4.||Canon SL2||4/5||+ +||78/100||4.5/5||4.5/5||Jun 2017||549|
|5.||Canon T7i||4.5/5||..||80/100||4.5/5||4/5||Feb 2017||749|
|6.||Canon 80D||4/5||+ +||84/100||4.5/5||4.5/5||Feb 2016||1,199|
|7.||Canon G7 X Mark II||4.5/5||+ +||81/100||4.5/5||4.5/5||Feb 2016||699|
|8.||Canon G5 X||5/5||+ +||78/100||4.5/5||4.5/5||Oct 2015||799|
|9.||Canon G9 X||3.5/5||+ +||..||4.5/5||4.5/5||Oct 2015||529|
|10.||Canon M3||4/5||o||75/100||4.5/5||4/5||Feb 2015||679|
|11.||Canon 40D||..||+ +||+ +||4.5/5||4.5/5||Aug 2007||1,299|
|12.||Canon 30D||..||+ +||+ +||o||..||Feb 2006||1,399|
|13.||Canon 20D||..||..||+ +||..||..||Aug 2004||1,499|
|14.||Canon 10D||..||..||+ +||..||..||Feb 2003||1,999|
|15.||Canon Rebel||..||..||+ +||..||..||Aug 2003||899|
|16.||Canon D60||..||..||+ +||o||..||Feb 2002||2,999|
|17.||Sony RX100 II||5/5||+ +||79/100||4.5/5||4.5/5||Jun 2013||749|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
Care should be taken when interpreting the review scores above, 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 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.
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 use the search menu below. As an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.
Specifications: Canon D30 vs Canon G7 X
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 Model||Canon D30||Canon G7 X|
|Camera Type||Digital single lens reflex||Fixed lens compact camera|
|Camera Lens||Canon EF mount lenses||24-100mm f/1.8-2.8|
|Launch Date||May 2000||September 2014|
|Launch Price||USD 2,999||USD 699|
|Sensor Specs||Canon D30||Canon G7 X|
|Sensor Format||APS-C Sensor||1" Sensor|
|Sensor Size||22.0 x 14.9 mm||13.2 x 8.8 mm|
|Sensor Area||327.8 mm2||116.16 mm2|
|Sensor Diagonal||26.6 mm||15.9 mm|
|Sensor Resolution||3.1 Megapixels||20 Megapixels|
|Image Resolution||2160 x 1440 pixels||5472 x 3648 pixels|
|Pixel Pitch||10.29 μm||2.41 μm|
|Pixel Density||0.95 MP/cm2||17.18 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||no Video||1080/60p Video|
|ISO Setting||100 - 1,600 ISO||125 - 12,800 ISO|
|DXO Sensor Quality (score)||..||71|
|DXO Color Depth (bits)||..||23.0|
|DXO Dynamic Range (EV)||..||12.7|
|DXO Low Light (ISO)||..||556|
|Screen Specs||Canon D30||Canon G7 X|
|Viewfinder Type||Optical viewfinder||no viewfinder|
|Viewfinder Field of View||95%|
|Top-Level Screen||Control Panel||no Top Display|
|LCD Framing||Live View|
|Rear LCD Size||1.8inch||3.0inch|
|LCD Resolution||114k dots||1040k dots|
|LCD Attachment||Fixed screen||Tilting screen|
|Touch Input||no Touchscreen||Touchscreen|
|Shooting Specs||Canon D30||Canon G7 X|
|Focus System||Phase-detect AF||Contrast-detect AF|
|Manual Focusing Aid||no Peaking Feature||Focus Peaking|
|Max Shutter Speed (mechanical)||1/4000s||1/2000s|
|Continuous Shooting||3 shutter flaps/s||6.5 shutter flaps/s|
|Time-Lapse Photography||no Intervalometer||Intervalometer built-in|
|Fill Flash||Built-in Flash||Built-in Flash|
|Storage Medium||CF cards||SDXC cards|
|Second Storage Option||Single card slot||Single card slot|
|Connectivity Specs||Canon D30||Canon G7 X|
|External Flash||Hotshoe||no Hotshoe|
|Studio Flash||PC Sync socket||no PC Sync|
|USB Connector||USB 1.0||USB 2.0|
|HDMI Port||no HDMI||micro HDMI|
|Wifi Support||no Wifi||Wifi built-in|
|Near-Field Communication||no NFC||NFC built-in|
|Body Specs||Canon D30||Canon G7 X|
|Battery Life (CIPA)||540 shots per charge||210 shots per charge|
150 x 107 x 75 mm
(5.9 x 4.2 x 3.0 in)
103 x 60 x 40 mm
(4.1 x 2.4 x 1.6 in)
|Camera Weight||750 g (26.5 oz)||304 g (10.7 oz)|
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