Sony RX100 III versus Canon G7 X
The Sony Cyber-shot DSC-RX100 III and the Canon PowerShot G7 X are two digital cameras that were announced, respectively, in May 2014 and September 2014. Both the RX100 III and the G7X are fixed lens compact cameras that are equipped with an one-inch sensor. Both cameras offer a resolution of 20 megapixel.
An illustration of the physical size and weight of the Sony RX100 III and the Canon G7 X is provided in the side-by-side display below. Three consecutive perspectives from the front, the top, and the back are presented. All width, height and depth dimensions are rounded to the nearest millimeter. If you prefer, you can also use the toggle button to switch to a comparison in percentage terms (in this case, the camera on the left – the RX100 III – represents 100 percent across all the size and weight measures).
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 somewhat larger (4 percent) than the Sony RX100 III. Moreover, the G7X is slightly heavier (5 percent) than the RX100 III. Cameras that are intended for semi-professional or professional use are sometimes a bit bulkier in order to provide them with the necessary ruggedness. In this context, it is worth noting that neither the RX100 III nor the G7X are weather-sealed.
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, just select a new right or left comparator from among the camera models in the table. Alternatively, you can also move across to the CAM-parator tool and choose from the broad selection of possible comparisons there.
|Camera Body Specifications
|Sony RX100 III (⇒ rgt)||102 mm||58 mm||41 mm||290 g||320||no||2014||799||discont.||check|
|Canon G7 X (⇒ lft)||103 mm||60 mm||40 mm||304 g||210||no||2014||699||discont.||check|
|Canon G7 X Mark II (⇒ lft | rgt)||106 mm||61 mm||42 mm||319 g||265||no||2016||699||latest||check|
|Canon G9 X (⇒ lft | rgt)||98 mm||58 mm||31 mm||209 g||220||no||2015||529||discont.||check|
|Canon M3 (⇒ lft | rgt)||111 mm||68 mm||44 mm||366 g||250||no||2015||679||discont.||check|
|Canon G5 X (⇒ lft | rgt)||112 mm||76 mm||44 mm||353 g||210||no||2015||799||latest||check|
|Canon G1 X Mark II (⇒ lft | rgt)||116 mm||74 mm||66 mm||553 g||240||no||2014||799||latest||check|
|Panasonic FZ1000 (⇒ lft | rgt)||137 mm||99 mm||131 mm||831 g||360||no||2014||899||discont.||check|
|Panasonic LX100 (⇒ lft | rgt)||115 mm||66 mm||55 mm||393 g||300||no||2014||899||latest||check|
|Sony RX10 II (⇒ lft | rgt)||129 mm||88 mm||102 mm||813 g||400||YES||2015||1,299||discont.||check|
|Sony RX100 IV (⇒ lft | rgt)||102 mm||58 mm||41 mm||298 g||280||no||2015||999||discont.||check|
|Sony RX100 II (⇒ lft | rgt)||102 mm||58 mm||38 mm||281 g||350||no||2013||749||discont.||check|
The listed prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The G7X was launched at a somewhat lower price (by 13 percent) than the RX100 III, which makes it more attractive for photographers on a tight budget. 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.
The size of the sensor inside a digital camera is one of the key determinants of image quality. A large sensor will tend to have larger individual pixels that provide better low-light sensitivity, wider dynamic range, and richer color depth than smaller pixel-units 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.
Both cameras under consideration feature an one-inch sensor and have a format factor (sometimes also referred to as "crop factor") of 2.7. Within the spectrum of camera sensors, this places the review cameras among the medium-sized sensor cameras that aim to strike a balance between image quality and portability. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
The two cameras under review do not only share the same sensor size, but also offer an identical resolution of 20 megapixel. This similarity in sensor specs implies that both the RX100 III and the G7X have the same pixel density, as well as the same pixel size. It should, however, be noted that the G7X is a somewhat more recent model (by 4 months) than the RX100 III, and its sensor might have benefitted from technological advances during this time.
For most cameras, data on sensor performance has been reported by DXO Mark. 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 consideration, the G7X has a markedly higher DXO score than the RX100 III (overall score 4 points higher), which will translate into better image quality. The advantage is based on 0.6 bits higher color depth, 0.4 EV in additional dynamic range, and 0.2 stops in additional low light sensitivity. The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.
|Sony RX100 III (⇒ rgt)||1-inch||20.0||5472||3648||1080/60p||22.4||12.3||495||67|
|Canon G7 X (⇒ lft)||1-inch||20.0||5472||3648||1080/60p||23.0||12.7||556||71|
|Canon G7 X Mark II (⇒ lft | rgt)||1-inch||20.0||5472||3648||1080/60p||-||-||-||-|
|Canon G9 X (⇒ lft | rgt)||1-inch||20.0||5472||3648||1080/60p||21.5||12.3||495||63|
|Canon M3 (⇒ lft | rgt)||APS-C||24.0||6000||4000||1080/30p||22.8||11.8||1169||72|
|Canon G5 X (⇒ lft | rgt)||1-inch||20.0||5472||3648||1080/60p||-||-||-||-|
|Canon G1 X Mark II (⇒ lft | rgt)||1.5-inch||13.0||4160||3120||1080/30p||21.5||10.8||581||58|
|Panasonic FZ1000 (⇒ lft | rgt)||1-inch||20.0||5472||3648||4K/30p||22.1||11.7||517||64|
|Panasonic LX100 (⇒ lft | rgt)||Four Thirds||12.7||4112||3088||4K/30p||22.3||12.5||553||67|
|Sony RX10 II (⇒ lft | rgt)||1-inch||20.0||5472||3648||4K/30p||23.0||12.6||531||70|
|Sony RX100 IV (⇒ lft | rgt)||1-inch||20.0||5472||3648||4K/30p||22.8||12.6||591||70|
|Sony RX100 II (⇒ lft | rgt)||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. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, and both provide the same movie specifications (1080/60p).
Beyond body and sensor, cameras can and do differ across a range of features. For example, the RX100 III has an electronic viewfinder (1440k dots), which can be very helpful 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 Sony RX100 III and Canon G7 X along with similar information for a selection of comparators. If you need more detail on the specs, you can find comprehensive listings, for example, in the dpreview camera hub.
|Sony RX100 III (⇒ rgt)||1440||no||3.0||1229||tilting||no||2000||10.0||YES||no|
|Canon G7 X (⇒ lft)||no||no||3.0||1040||tilting||YES||2000||6.5||7||no|
|Canon G7 X Mark II (⇒ lft | rgt)||no||no||3.0||1040||tilting||YES||2000||8.0||7||no|
|Canon G9 X (⇒ lft | rgt)||no||no||3.0||1040||fixed||YES||2000||6.0||6||no|
|Canon M3 (⇒ lft | rgt)||no||no||3.0||1040||tilting||YES||4000||4.2||5||no|
|Canon G5 X (⇒ lft | rgt)||2360||no||3.0||1040||swivel||YES||2000||5.9||7||no|
|Canon G1 X Mark II (⇒ lft | rgt)||no||no||3.0||1040||tilting||YES||4000||5.2||6.8||no|
|Panasonic FZ1000 (⇒ lft | rgt)||2359||no||3.0||921||swivel||no||4000||12.0||13.5||no|
|Panasonic LX100 (⇒ lft | rgt)||2764||no||3.0||921||fixed||no||4000||11.0||7||no|
|Sony RX10 II (⇒ lft | rgt)||2359||YES||3.0||1229||tilting||no||3200||14.0||10.2||no|
|Sony RX100 IV (⇒ lft | rgt)||2359||no||3.0||1228||tilting||no||2000||16.0||10.2||no|
|Sony RX100 II (⇒ lft | rgt)||no||no||3.0||1229||tilting||no||2000||10.0||15||no|
Both the RX100 III and the G7X have zoom lenses build in. The RX100 III has a 24-70mm f/1.8-2.8 optic and the G7X offers a 24-100mm f/1.8-2.8 (focal lengths in full frame equivalent terms). Hence, the Sony and Canon provide the same view at the wide-angle end, but the Canon has more tele-photo reach at the long end. Both cameras offer the same maximum aperture.
Both the RX100 III and the G7X have been discontinued, but can regularly be found used on ebay. The RX100 III was replaced by the Sony RX100 IV, while the G7X was followed by the Canon G7 X Mark II.
So what conclusions can be drawn? Is there a clear favorite between the Sony RX100 III and the Sony RX100 III? A synthesis of the relative strong points of each of the models is listed below.
Arguments in favor of the Sony Cyber-shot DSC-RX100 III:
- Easier framing: Has an electronic viewfinder for image framing and settings control.
- More detailed LCD: Has a higher resolution rear screen (1229k vs 1040k dots).
- Faster burst: Shoots at higher frequency (10 vs 6.5 flaps/sec) to capture the decisive moment.
- Longer lasting: Can take more shots (320 versus 210) on a single battery charge.
- More heavily discounted: Has been on the market for longer (launched in May 2014).
Advantages of the Canon PowerShot G7 X:
- Better image quality: Scores markedly higher (4 points) in the DXO overall evaluation.
- Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
- More affordable: Was released into a lower priced segment (13 percent cheaper at launch).
- More modern: Was introduced somewhat (4 months) more recently.
If the count of relative strengths (bullet points above) is taken as a measure, the RX100 III comes out slightly ahead of the G7X (5 : 4 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.
In any case, while the comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it says nothing about, for example, the handling, responsiveness, and overall imaging quality of the RX100 III and the G7X in practical situations. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased. This is where reviews by experts come in. The table below summarizes the assessments of some of the best known camera review sites. The full reviews are available, respectively, at cameralabs.com, dpreview.com, ephotozine.com, imaging-resource.com, and photographyblog.com.
|Sony RX100 III (⇒ rgt)||HiRec||82/100 Gold||4.5/5||4.5/5||5/5||2014||799||discont.||check|
|Canon G7 X (⇒ lft)||HiRec||77/100 Silver||4.5/5||3.5/5||4.5/5||2014||699||discont.||check|
|Canon G7 X Mark II (⇒ lft | rgt)||HiRec||81/100 Silver||4.5/5||4/5||4.5/5||2016||699||latest||check|
|Canon G9 X (⇒ lft | rgt)||HiRec||-||4.5/5||4/5||4.5/5||2015||529||discont.||check|
|Canon M3 (⇒ lft | rgt)||reviewed||75/100||4.5/5||4.5/5||4/5||2015||679||discont.||check|
|Canon G5 X (⇒ lft | rgt)||HiRec||78/100 Silver||4.5/5||4/5||4.5/5||2015||799||latest||check|
|Canon G1 X Mark II (⇒ lft | rgt)||Rec||77/100 Silver||4/5||4/5||4.5/5||2014||799||latest||check|
|Panasonic FZ1000 (⇒ lft | rgt)||HiRec||82/100 Gold||4.5/5||4.5/5||4.5/5||2014||899||discont.||check|
|Panasonic LX100 (⇒ lft | rgt)||HiRec||85/100 Gold||5/5||4/5||5/5||2014||899||latest||check|
|Sony RX10 II (⇒ lft | rgt)||HiRec||82/100 Gold||4.5/5||4.5/5||4/5||2015||1,299||discont.||check|
|Sony RX100 IV (⇒ lft | rgt)||HiRec||85/100 Gold||4/5||4.5/5||4.5/5||2015||999||discont.||check|
|Sony RX100 II (⇒ lft | rgt)||HiRec||79/100 Silver||4.5/5||5/5||4.5/5||2013||749||discont.||check|
The above review scores should be interpreted with care, though. The ratings are only valid when refering to cameras in the same category and of the same age. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, 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.
If you would like to see a different side-by-side camera review, just make your choice using the following search menu. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored. If you cannot find the camera you are interested in, please send me an email, and I will try to add information on that model to the database.
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