Canon D30 vs Sony A7
The Canon EOS-D30 and the Sony Alpha A7 are two digital cameras that were revealed to the public, respectively, in May 2000 and October 2013. The D30 is a DSLR, while the A7 is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (D30) and a full frame (A7) sensor. The Canon has a resolution of 3.1 megapixels, whereas the Sony provides 24 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 Sony Alpha A7? 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 side-by-side display below illustrates the physical size and weight of the Canon D30 and the Sony A7. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All size 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 Sony A7 is notably smaller (26 percent) than the Canon D30. Moreover, the A7 is substantially lighter (37 percent) than the D30. It is noteworthy in this context that the A7 is splash and dust-proof, while the D30 does not feature any corresponding weather-sealing.
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 (D30) and the Sony FE Lens Catalog (A7). Mirrorless cameras, such as the A7, 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 D30 gets 540 shots out of its BP-511 battery, while the A7 can take 340 images on a single charge of its NP-FW50 power pack. The power pack in the A7 can be charged via the USB port, which can be very convenient when travelling.
The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. In case you want to display and compare another camera duo, you can use the CAM-parator app to select your camera combination among a large number of options.
|1.||Canon D30||150 mm||107 mm||75 mm||750 g||540||n||May 2000||2,999||ebay.com|
|2.||Sony A7||127 mm||94 mm||48 mm||474 g||340||Y||Oct 2013||1,699||ebay.com|
|3.||Canon T7||129 mm||101 mm||78 mm||475 g||500||n||Feb 2018||449||amazon.com|
|4.||Canon SL2||122 mm||93 mm||70 mm||453 g||650||n||Jun 2017||549||ebay.com|
|5.||Canon T7i||131 mm||100 mm||76 mm||532 g||600||n||Feb 2017||749||ebay.com|
|6.||Canon 80D||139 mm||105 mm||79 mm||730 g||960||Y||Feb 2016||1,199||ebay.com|
|7.||Canon 40D||146 mm||108 mm||74 mm||822 g||750||n||Aug 2007||1,299||ebay.com|
|8.||Canon 30D||144 mm||106 mm||74 mm||785 g||750||n||Feb 2006||1,399||ebay.com|
|9.||Canon 20D||144 mm||106 mm||72 mm||770 g||700||n||Aug 2004||1,499||ebay.com|
|10.||Canon 10D||150 mm||107 mm||75 mm||850 g||500||n||Feb 2003||1,999||ebay.com|
|11.||Canon Rebel||142 mm||99 mm||72 mm||649 g||400||n||Aug 2003||899||ebay.com|
|12.||Canon D60||150 mm||107 mm||75 mm||855 g||620||n||Feb 2002||2,999||ebay.com|
|13.||Sony A7 II||127 mm||96 mm||60 mm||599 g||350||Y||Nov 2014||1,999||ebay.com|
|14.||Sony A7S||127 mm||94 mm||48 mm||489 g||380||Y||Apr 2014||2,499||ebay.com|
|15.||Sony A7R||127 mm||94 mm||48 mm||465 g||340||Y||Oct 2013||2,299||ebay.com|
|16.||Sony RX1R||113 mm||65 mm||70 mm||482 g||270||n||Jun 2013||2,799||ebay.com|
|17.||Sony RX1||113 mm||65 mm||70 mm||482 g||270||n||Sep 2012||2,799||ebay.com|
|Note: 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 manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The A7 was launched at a markedly lower price (by 43 percent) than the D30, which puts it into a different market segment. 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 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. 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 are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.
Of the two cameras under consideration, the Canon D30 features an APS-C sensor and the Sony A7 a full frame sensor. The sensor area in the A7 is 161 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.6 and 1.0. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
With 24MP, the A7 offers a higher resolution than the D30 (3.1MP), but the A7 has smaller individual pixels (pixel pitch of 5.97μm versus 10.29μm for the D30). Yet, the A7 is a much more recent model (by 13 years and 5 months) than the D30, and its sensor will have benefitted from technological advances during this time that enhance the light gathering capacity of its pixel-units.
The resolution advantage of the Sony A7 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A7 for good quality output (200 dots per inch) amounts to 30 x 20 inches or 76.2 x 50.8 cm, for very good quality (250 dpi) 24 x 16 inches or 61 x 40.6 cm, and for excellent quality (300 dpi) 20 x 13.3 inches or 50.8 x 33.9 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 A7 has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
The Canon EOS-D30 has a native sensitivity range from ISO 100 to ISO 1600. The corresponding ISO settings for the Sony Alpha A7 are ISO 100 to ISO 25600, with the possibility to increase the ISO range to 50-51200.
Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.
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.
|2.||Sony A7||Full Frame||24.0||6000||4000||1080/60p||24.8||14.2||2248||90|
|13.||Sony A7 II||Full Frame||24.0||6000||4000||1080/60p||24.9||13.6||2449||90|
|14.||Sony A7S||Full Frame||12.0||4240||2832||1080/60p||23.9||13.2||3702||87|
|15.||Sony A7R||Full Frame||36.2||7360||4912||1080/60p||25.6||14.1||2746||95|
|16.||Sony RX1R||Full Frame||24.0||6000||4000||1080/60p||25.0||13.6||2537||91|
|17.||Sony RX1||Full Frame||24.0||6000||4000||1080/60p||25.1||14.3||2534||93|
|Note: DXO values in italics represent estimates based on sensor size and age.|
Many modern cameras cannot only take still pictures, but also record videos. The A7 indeed provides for movie recording, while the D30 does not. The highest resolution format that the A7 can use is 1080/60p.
Apart from body and sensor, cameras can and do differ across a variety of features. For example, the A7 has an electronic viewfinder (2400k dots), while the D30 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 A7 offers a wider field of view (100%) than the one in the D30 (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the A7 has a higher magnification (0.71x vs 0.54x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The adjacent table lists some of the other core features of the Canon D30 and Sony A7 along with similar information for a selection of comparators.
|1.||Canon D30||optical||Y||1.8 / 114||fixed||n||1/4000s||3.0/s||Y||n|
|2.||Sony A7||2400||n||3.0 / 1230||tilting||n||1/8000s||5.0/s||n||n|
|3.||Canon T7||optical||n||3.0 / 920||fixed||n||1/4000s||3.0/s||Y||n|
|4.||Canon SL2||optical||n||3.0 / 1040||swivel||Y||1/4000s||5.0/s||Y||n|
|5.||Canon T7i||optical||n||3.0 / 1040||swivel||Y||1/4000s||6.0/s||Y||n|
|6.||Canon 80D||optical||Y||3.0 / 1040||swivel||Y||1/8000s||7.0/s||Y||n|
|7.||Canon 40D||optical||Y||3.0 / 230||fixed||n||1/8000s||6.5/s||Y||n|
|8.||Canon 30D||optical||Y||2.5 / 230||fixed||n||1/8000s||5.0/s||Y||n|
|9.||Canon 20D||optical||Y||1.8 / 118||fixed||n||1/8000s||5.0/s||Y||n|
|10.||Canon 10D||optical||Y||1.8 / 118||fixed||n||1/4000s||3.0/s||Y||n|
|11.||Canon Rebel||optical||n||1.8 / 118||fixed||n||1/4000s||2.5/s||Y||n|
|12.||Canon D60||optical||Y||1.8 / 114||fixed||n||1/4000s||3.0/s||Y||n|
|13.||Sony A7 II||2400||n||3.0 / 1230||tilting||n||1/8000s||5.0/s||n||Y|
|14.||Sony A7S||2400||n||3.0 / 921||tilting||n||1/8000s||5.0/s||n||n|
|15.||Sony A7R||2400||n||3.0 / 1230||tilting||n||1/8000s||4.0/s||n||n|
|16.||Sony RX1R||optional||n||3.0 / 1229||fixed||n||1/4000s||5.0/s||Y||n|
|17.||Sony RX1||optional||n||3.0 / 1229||fixed||n||1/4000s||5.0/s||Y||n|
|Notes: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.|
One difference between the cameras concerns the presence of an on-board flash. The D30 has one, while the A7 does not. While the built-in flash of the D30 is not very powerful, it can at times be useful as a fill-in light.
The D30 writes its imaging data to Compact Flash cards, while the A7 uses SDXC or Memory Stick PRO Duo 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 Sony Alpha A7 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
Mic / Speaker
|1.||Canon D30||Y||- / -||-||-||-||1.0||-||-||-|
|2.||Sony A7||Y||stereo / mono||Y||Y||micro||2.0||Y||Y||-|
|3.||Canon T7||Y||mono / mono||-||-||mini||2.0||Y||Y||-|
|4.||Canon SL2||Y||stereo / mono||Y||-||mini||2.0||Y||Y||Y|
|5.||Canon T7i||Y||stereo / mono||Y||-||mini||2.0||Y||Y||Y|
|6.||Canon 80D||Y||stereo / mono||Y||Y||mini||2.0||Y||Y||-|
|7.||Canon 40D||Y||- / -||-||-||-||2.0||-||-||-|
|8.||Canon 30D||Y||- / -||-||-||-||2.0||-||-||-|
|9.||Canon 20D||Y||- / -||-||-||-||1.1||-||-||-|
|10.||Canon 10D||Y||- / -||-||-||-||1.1||-||-||-|
|11.||Canon Rebel||Y||- / -||-||-||-||1.1||-||-||-|
|12.||Canon D60||Y||- / -||-||-||-||1.1||-||-||-|
|13.||Sony A7 II||Y||stereo / mono||Y||Y||micro||2.0||Y||Y||-|
|14.||Sony A7S||Y||stereo / mono||Y||Y||micro||2.0||Y||Y||-|
|15.||Sony A7R||Y||stereo / mono||Y||Y||micro||2.0||Y||Y||-|
|16.||Sony RX1R||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
|17.||Sony RX1||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
It is notable that the A7 offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the D30 does not provide wifi capability.
Studio photographers will appreciate that the Canon D30 (unlike the A7) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
Both the D30 and the A7 have been discontinued, but can regularly be found used on ebay. The D30 was replaced by the Canon D60, while the A7 was followed by the Sony A7 II. Further information on the features and operation of the D30 and A7 can be found, respectively, in the Canon D30 Manual (free pdf) or the online Sony A7 Manual.
So what is the bottom line? Is the Canon D30 better than the Sony A7 or vice versa? The listing below highlights the relative strengths of the two models.
Advantages of the Canon EOS-D30:
- Brighter framing: Features an optical viewfinder for clear, lag-free composition.
- Easier setting verification: Features an LCD display on top to control shooting parameters.
- Longer lasting: Can take more shots (540 versus 340) on a single battery charge.
- Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
- 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 Sony Alpha A7:
- More detail: Has more megapixels (24 vs 3.1MP), which boosts linear resolution by 178%.
- Better image quality: Is equipped with a larger and more technologically advanced sensor.
- Richer colors: The sensor size advantage translates into images with better, more accurate colors.
- More dynamic range: Larger sensor captures a wider spectrum of light and dark details.
- Better low-light sensitivity: Larger sensor produces good images even in poorly lit environments.
- Broader imaging potential: Can capture not only stills but also 1080/60p video.
- Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
- 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 (0.71x vs 0.54x).
- 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 (1230k vs 114k dots).
- More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
- Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
- Faster burst: Shoots at higher frequency (5 vs 3 flaps/sec) to capture the decisive moment.
- More compact: Is smaller (127x94mm vs 150x107mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight (by 276g or 37 percent) and is thus easier to take along.
- Easier travel charging: Can be conveniently charged via its USB port.
- Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
- More legacy lens friendly: Can use many non-native lenses via adapters.
- 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 into a lower priced category (43 percent cheaper at launch).
- More modern: Reflects 13 years and 5 months of technical progress since the D30 launch.
If the count of relative strengths (bullet points above) is taken as a measure, the A7 is the clear winner of the contest (25 : 6 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 Sony A7 place the cameras among the top in their class? Find out in the latest Best DSLR Camera and Best Mirrorless Interchangeable Lens Camera listings whether the two cameras rank among the cream of the crop.
In any case, while the comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it says little about, for example, the shooting experience and imaging performance of the D30 and the A7 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 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.
|1.||Canon D30||..||..||..||+ +||..||..||May 2000||2,999||ebay.com|
|2.||Sony A7||5/5||+ +||..||80/100||5/5||5/5||Oct 2013||1,699||ebay.com|
|3.||Canon T7||..||o||3.5/5||..||3.5/5||3.5/5||Feb 2018||449||amazon.com|
|4.||Canon SL2||4/5||+ +||4/5||78/100||4.5/5||4.5/5||Jun 2017||549||ebay.com|
|5.||Canon T7i||4.5/5||..||3.5/5||80/100||4.5/5||4/5||Feb 2017||749||ebay.com|
|6.||Canon 80D||4/5||+ +||4.5/5||84/100||4.5/5||4.5/5||Feb 2016||1,199||ebay.com|
|7.||Canon 40D||..||+ +||..||+ +||4.5/5||4.5/5||Aug 2007||1,299||ebay.com|
|8.||Canon 30D||..||+ +||..||+ +||o||..||Feb 2006||1,399||ebay.com|
|9.||Canon 20D||..||..||..||+ +||..||..||Aug 2004||1,499||ebay.com|
|10.||Canon 10D||..||..||..||+ +||..||..||Feb 2003||1,999||ebay.com|
|11.||Canon Rebel||..||..||..||+ +||..||..||Aug 2003||899||ebay.com|
|12.||Canon D60||..||..||..||+ +||o||..||Feb 2002||2,999||ebay.com|
|13.||Sony A7 II||5/5||+||4/5||82/100||4.5/5||5/5||Nov 2014||1,999||ebay.com|
|14.||Sony A7S||4/5||..||..||86/100||4.5/5||5/5||Apr 2014||2,499||ebay.com|
|15.||Sony A7R||5/5||+ +||..||82/100||4.5/5||5/5||Oct 2013||2,299||ebay.com|
|16.||Sony RX1R||5/5||..||..||..||4/5||4.5/5||Jun 2013||2,799||ebay.com|
|17.||Sony RX1||5/5||..||..||79/100||4/5||4.5/5||Sep 2012||2,799||ebay.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. 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? 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.
Specifications: Canon D30 vs Sony A7
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||Sony A7|
|Camera Type||Digital single lens reflex||Mirrorless system camera|
|Camera Lens||Canon EF mount lenses||Sony E mount lenses|
|Launch Date||May 2000||October 2013|
|Launch Price||USD 2,999||USD 1,699|
|Sensor Specs||Canon D30||Sony A7|
|Sensor Format||APS-C Sensor||Full Frame Sensor|
|Sensor Size||22.0 x 14.9 mm||35.8 x 23.9 mm|
|Sensor Area||327.8 mm2||855.62 mm2|
|Sensor Diagonal||26.6 mm||43 mm|
|Sensor Resolution||3.1 Megapixels||24 Megapixels|
|Image Resolution||2160 x 1440 pixels||6000 x 4000 pixels|
|Pixel Pitch||10.29 μm||5.97 μm|
|Pixel Density||0.95 MP/cm2||2.80 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||no Video||1080/60p Video|
|ISO Setting||100 - 1,600 ISO||100 - 25,600 ISO|
|ISO Boost||no Enhancement||50 - 51,200 ISO|
|DXO Sensor Quality (score)||..||90|
|DXO Color Depth (bits)||..||24.8|
|DXO Dynamic Range (EV)||..||14.2|
|DXO Low Light (ISO)||..||2248|
|Screen Specs||Canon D30||Sony A7|
|Viewfinder Type||Optical viewfinder||Electronic viewfinder|
|Viewfinder Field of View||95%||100%|
|Viewfinder Resolution||2400k dots|
|Top-Level Screen||Control Panel||no Top Display|
|LCD Framing||Live View|
|Rear LCD Size||1.8inch||3.0inch|
|LCD Resolution||114k dots||1230k dots|
|LCD Attachment||Fixed screen||Tilting screen|
|Shooting Specs||Canon D30||Sony A7|
|Focus System||Phase-detect AF||On-Sensor Phase-detect|
|Manual Focusing Aid||no Peaking Feature||Focus Peaking|
|Max Shutter Speed (mechanical)||1/4000s||1/8000s|
|Continuous Shooting||3 shutter flaps/s||5 shutter flaps/s|
|Fill Flash||Built-in Flash||no On-Board Flash|
|Storage Medium||CF cards||MS or SDXC cards|
|Second Storage Option||Single card slot||Single card slot|
|Connectivity Specs||Canon D30||Sony A7|
|Studio Flash||PC Sync socket||no PC Sync|
|USB Connector||USB 1.0||USB 2.0|
|HDMI Port||no HDMI||micro HDMI|
|Microphone Port||no MIC socket||External MIC port|
|Headphone Socket||no Headphone port||Headphone port|
|Wifi Support||no Wifi||Wifi built-in|
|Near-Field Communication||no NFC||NFC built-in|
|Body Specs||Canon D30||Sony A7|
|Environmental Sealing||not weather sealed||Weathersealed body|
|Battery Life (CIPA)||540 shots per charge||340 shots per charge|
|In-Camera Charging||no USB charging||USB charging|
150 x 107 x 75 mm
(5.9 x 4.2 x 3.0 in)
127 x 94 x 48 mm
(5.0 x 3.7 x 1.9 in)
|Camera Weight||750 g (26.5 oz)||474 g (16.7 oz)|
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