Canon 6D vs Sony A99
The Canon EOS 6D and the Sony Alpha SLT-A99 are two digital cameras that were officially introduced in September 2012. Both are DSLR (Digital Single Lens Reflex) cameras that are equipped with a full frame sensor. The Canon has a resolution of 20 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 6D and the Sony Alpha SLT-A99? 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 6D and the Sony A99. The two cameras are presented according to their relative size. Three consecutive views from the front, the top, and the rear side 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 A99 is somewhat larger (1 percent) than the Canon 6D. Moreover, the A99 is markedly heavier (5 percent) than the 6D. In this context, it is worth noting that both cameras are splash and dust-proof and can, hence, be used in inclement weather conditions or harsh environments.
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. Hence, you might want to study and compare the specifications of available lenses in order to get the full picture of the size and weight of the two camera systems.
The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. 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 6D||145 mm||111 mm||71 mm||770 g||1090||Y||Sep 2012||2,099|
|2.||Sony A99||147 mm||111 mm||78 mm||812 g||500||Y||Sep 2012||2,799|
|3.||Canon 6D Mark II||144 mm||111 mm||75 mm||765 g||1200||Y||Jun 2017||1,999|
|4.||Canon 1D X Mark II||158 mm||168 mm||83 mm||1530 g||1210||Y||Feb 2016||5,999|
|5.||Canon 5DS||152 mm||116 mm||76 mm||930 g||700||Y||Feb 2015||3,699|
|6.||Canon 7D II||149 mm||112 mm||78 mm||910 g||670||Y||Sep 2014||1,799|
|7.||Canon 70D||139 mm||104 mm||79 mm||755 g||920||Y||Jul 2013||1,199|
|8.||Canon 5D Mark III||152 mm||116 mm||76 mm||950 g||950||Y||Mar 2012||3,499|
|9.||Canon 1D X||158 mm||168 mm||83 mm||1551 g||1120||Y||Oct 2011||6,799|
|10.||Canon 5D Mark II||152 mm||114 mm||75 mm||850 g||850||Y||Sep 2008||3,499|
|11.||Nikon D610||141 mm||113 mm||82 mm||850 g||900||Y||Oct 2013||1,999|
|12.||Nikon D600||141 mm||113 mm||82 mm||850 g||900||Y||Sep 2012||2,099|
|13.||Sony A9 II||129 mm||96 mm||76 mm||678 g||690||Y||Oct 2019||4,499|
|14.||Sony A99 II||143 mm||104 mm||76 mm||849 g||490||Y||Sep 2016||3,199|
|15.||Sony A77||143 mm||104 mm||81 mm||732 g||470||Y||Aug 2011||1,399|
|16.||Sony A850||156 mm||117 mm||82 mm||895 g||880||Y||Aug 2009||1,999|
|17.||Sony A900||156 mm||117 mm||82 mm||895 g||880||Y||Sep 2008||2,999|
|Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.|
Any camera decision will obviously take relative prices into account. 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 6D was launched at a somewhat lower price (by 25 percent) than the A99, which makes it more attractive for photographers on a tight budget. 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.
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 associated with larger, more expensive camera bodies and lenses.
Both cameras under consideration feature a full frame sensor, but their sensors differ slightly in size. The sensor area in the A99 is 1 percent smaller. They nevertheless have the same format factor of 1.0. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
Despite having a slightly smaller sensor, the A99 offers a higher resolution of 24 megapixels, compared with 20 MP of the 6D. 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 5.96μm versus 6.57μm for the 6D). It is noteworthy in this context that the two cameras were released in close succession, so that their sensors are from the same technological generation.
The resolution advantage of the Sony A99 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A99 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 6D are 27.4 x 18.2 inches or 69.5 x 46.3 cm for good quality, 21.9 x 14.6 inches or 55.6 x 37.1 cm for very good quality, and 18.2 x 12.2 inches or 46.3 x 30.9 cm for excellent quality prints.
The Canon EOS 6D has a native sensitivity range from ISO 100 to ISO 25600, which can be extended to ISO 50-102400. The corresponding ISO settings for the Sony Alpha SLT-A99 are ISO 100 to ISO 25600, with the possibility to increase the ISO range to 50-25600.
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. Of the two cameras under consideration, the A99 has a markedly higher DXO score than the 6D (overall score 7 points higher), which will translate into better image quality. The advantage is based on 1.2 bits higher color depth, 1.9 EV in additional dynamic range, and 0.6 stops of reduced low light sensitivity. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.
|1.||Canon 6D||Full Frame||20.0||5472||3648||1080/30p||23.8||12.1||2340||82|
|2.||Sony A99||Full Frame||24.0||6000||4000||1080/60p||25.0||14.0||1555||89|
|3.||Canon 6D Mark II||Full Frame||26.0||6240||4160||1080/60p||24.4||11.9||2862||85|
|4.||Canon 1D X Mark II||Full Frame||20.0||5472||3648||4K/60p||24.1||13.5||3207||88|
|5.||Canon 5DS||Full Frame||50.3||8688||5792||1080/30p||24.7||12.4||2381||87|
|6.||Canon 7D II||APS-C||20.0||5472||3648||1080/60p||22.4||11.8||1082||70|
|8.||Canon 5D Mark III||Full Frame||22.1||5760||3840||1080/30p||24.0||11.7||2293||81|
|9.||Canon 1D X||Full Frame||17.9||5184||3456||1080/30p||23.8||11.8||2786||82|
|10.||Canon 5D Mark II||Full Frame||21.0||5616||3744||1080/30p||23.7||11.9||1815||79|
|11.||Nikon D610||Full Frame||24.2||6016||4016||1080/30p||25.1||14.4||2925||94|
|12.||Nikon D600||Full Frame||24.2||6016||4016||1080/30p||25.1||14.2||2980||94|
|13.||Sony A9 II||Full Frame||24.0||6000||4000||4K/30p||25.0||14.0||3434||93|
|14.||Sony A99 II||Full Frame||42.2||7952||5304||4K/30p||25.4||13.4||2317||92|
|16.||Sony A850||Full Frame||24.4||6048||4032||none||23.8||12.2||1415||79|
|17.||Sony A900||Full Frame||24.4||6048||4032||none||23.7||12.3||1431||79|
Many modern cameras are not only capable of taking still images, but can also record movies. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the A99 provides a faster frame rate than the 6D. It can shoot movie footage at 1080/60p, while the Canon is limited to 1080/30p.
Apart from body and sensor, cameras can and do differ across a range of features. For example, the A99 has an electronic viewfinder (2359k dots), while the 6D 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 viewfinders of both cameras offer the same magnification (0.71x), but the one in the A99 has a wider field of view (100%) than the finder in the 6D (97%), so that a larger proportion of the captured image is visible. The adjacent table lists some of the other core features of the Canon 6D and Sony A99 along with similar information for a selection of comparators.
|1.||Canon 6D||optical||Y||3.0 / 1040||fixed||n||1/4000s||4.5||n||n|
|2.||Sony A99||2359||Y||3.0 / 1229||full-flex||n||1/8000s||6.0||n||Y|
|3.||Canon 6D Mark II||optical||Y||3.0 / 1040||swivel||Y||1/4000s||6.5||n||n|
|4.||Canon 1D X Mark II||optical||Y||3.2 / 1620||fixed||Y||1/8000s||16.0||n||n|
|5.||Canon 5DS||optical||Y||3.2 / 1040||fixed||n||1/8000s||5.0||n||n|
|6.||Canon 7D II||optical||Y||3.0 / 1040||fixed||n||1/8000s||10.0||Y||n|
|7.||Canon 70D||optical||Y||3.0 / 1040||swivel||Y||1/8000s||7.0||Y||n|
|8.||Canon 5D Mark III||optical||Y||3.2 / 1040||fixed||n||1/8000s||6.0||n||n|
|9.||Canon 1D X||optical||Y||3.2 / 1040||fixed||n||1/8000s||14.0||n||n|
|10.||Canon 5D Mark II||optical||Y||3.0 / 920||fixed||n||1/8000s||3.9||n||n|
|11.||Nikon D610||optical||Y||3.2 / 921||fixed||n||1/4000s||6.0||Y||n|
|12.||Nikon D600||optical||Y||3.0 / 921||fixed||n||1/4000s||5.5||Y||n|
|13.||Sony A9 II||3686||n||3.0 / 1440||tilting||Y||1/8000s||10.0||n||Y|
|14.||Sony A99 II||2400||Y||3.0 / 1229||full-flex||n||1/8000s||12.0||n||Y|
|15.||Sony A77||2359||Y||3.0 / 921||full-flex||n||1/8000s||12.0||Y||Y|
|16.||Sony A850||optical||Y||3.0 / 922||fixed||n||1/8000s||3.0||n||Y|
|17.||Sony A900||optical||Y||3.0 / 922||fixed||n||1/8000s||5.0||n||Y|
One feature that differentiates the A99 and the 6D is in-body image stabilization (IBIS). The A99 reduces the risk of handshake-induced blur with all attached lenses, while the 6D offers no blur reduction with lenses that themselves do not provide optical image stabilization.The A99 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 6D does not have a selfie-screen.
The 6D writes its imaging data to SDXC cards, while the A99 uses SDXC or Memory Stick PRO Duo cards. The A99 features dual card slots, which can be very useful in case a memory card fails. In contrast, the 6D only has one slot. Both cameras can use UHS-I cards, which provide for Ultra High Speed data transfer of up to 104 MB/s.
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 6D and Sony Alpha SLT-A99 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
Mic / Speaker
|1.||Canon 6D||Y||mono / mono||Y||-||mini||2.0||Y||-||-|
|2.||Sony A99||Y||stereo / mono||Y||Y||mini||2.0||-||-||-|
|3.||Canon 6D Mark II||Y||stereo / mono||Y||-||mini||2.0||Y||Y||Y|
|4.||Canon 1D X Mark II||Y||mono / mono||Y||Y||mini||3.0||-||-||-|
|5.||Canon 5DS||Y||mono / mono||Y||-||mini||3.0||-||-||-|
|6.||Canon 7D II||Y||stereo / mono||Y||Y||mini||3.0||-||-||-|
|7.||Canon 70D||Y||stereo / mono||Y||-||mini||2.0||Y||-||-|
|8.||Canon 5D Mark III||Y||mono / mono||Y||Y||mini||2.0||-||-||-|
|9.||Canon 1D X||Y||mono / -||Y||-||mini||2.0||-||-||-|
|10.||Canon 5D Mark II||Y||mono / mono||Y||-||mini||2.0||-||-||-|
|11.||Nikon D610||Y||mono / mono||Y||Y||mini||2.0||-||-||-|
|12.||Nikon D600||Y||mono / mono||Y||Y||mini||2.0||-||-||-|
|13.||Sony A9 II||Y||stereo / mono||Y||Y||micro||3.1||Y||Y||Y|
|14.||Sony A99 II||Y||stereo / mono||Y||Y||micro||2.0||Y||Y||Y|
|15.||Sony A77||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
|16.||Sony A850||Y||- / -||-||-||mini||2.0||-||-||-|
|17.||Sony A900||Y||- / -||-||-||mini||2.0||-||-||-|
It is notable that the 6D offers wifi support, while the A99 does not. Wifi can be a very convenient means to transfer image data to an off-camera location.
Studio photographers will appreciate that the Sony A99 (unlike the 6D) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
Travel and landscape photographers will find it useful that both cameras feature internal geolocalization sensors and can record GPS coordinates in their EXIF data.
Both the 6D and the A99 have been discontinued, but can regularly be found used on eBay. The A99 was replaced by the Sony A99 II, while the 6D was followed by the Canon 6D 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 and Sony websites.
So how do things add up? Which of the two cameras – the Canon 6D or the Sony A99 – has the upper hand? Is one clearly better than the other? The listing below highlights the relative strengths of the two models.
Arguments in favor of the Canon EOS 6D:
- Better low-light sensitivity: Requires less light for good images (0.6 stops ISO advantage).
- Brighter framing: Features an optical viewfinder for clear, lag-free composition.
- Longer lasting: Can take more shots (1090 versus 500) on a single battery charge.
- Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
- More affordable: Was introduced into a lower priced segment (25 percent cheaper at launch).
Advantages of the Sony Alpha SLT-A99:
- More detail: Has more megapixels (24 vs 20MP), which boosts linear resolution by 10%.
- Better image quality: Scores markedly higher (7 points) in the DXO overall evaluation.
- Richer colors: Generates noticeably more natural colors (1.2 bits more color depth).
- More dynamic range: Captures a broader range of light and dark details (1.9 EV of extra DR).
- Better video: Provides higher movie framerates (1080/60p versus 1080/30p).
- Better sound control: Has a headphone port that enables audio monitoring while recording.
- 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 97%).
- More detailed LCD: Has a higher resolution rear screen (1229k vs 1040k dots).
- More flexible LCD: Has a full-flex screen for odd-angle shots in portrait or landscape orientation.
- More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
- Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
- Faster burst: Shoots at higher frequency (6 vs 4.5 flaps/sec) to capture the decisive moment.
- Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
- 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.
If the number of relative strengths (bullet points above) is taken as a guide, the A99 is the clear winner of the contest (17 : 5 points). However, the relevance of individual strengths will vary across photographers, so that you might want to apply your own weighing scheme to the summary points when reflecting and deciding 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 6D and the Sony A99 place the cameras among the top in their class? Find out in the latest Best DSLR Camera listing 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 remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the 6D or the A99. 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.
This is why expert reviews are important. 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.
|1.||Canon 6D||5/5||+ +||..||83/100||4.5/5||4.5/5||Sep 2012||2,099|
|2.||Sony A99||5/5||..||..||84/100||4.5/5||4.5/5||Sep 2012||2,799|
|3.||Canon 6D Mark II||4/5||+||4/5||80/100||4.5/5||4/5||Jun 2017||1,999|
|4.||Canon 1D X Mark II||..||..||4.5/5||89/100||4.5/5||4.5/5||Feb 2016||5,999|
|5.||Canon 5DS||..||+||..||83/100||4.5/5||4.5/5||Feb 2015||3,699|
|6.||Canon 7D II||4.5/5||+||3.5/5||84/100||4/5||4.5/5||Sep 2014||1,799|
|7.||Canon 70D||5/5||+ +||..||83/100||4.5/5||5/5||Jul 2013||1,199|
|8.||Canon 5D Mark III||..||+ +||..||82/100||4.5/5||4.5/5||Mar 2012||3,499|
|9.||Canon 1D X||5/5||..||..||..||4.5/5||4.5/5||Oct 2011||6,799|
|10.||Canon 5D Mark II||4/5||91/100||..||79/100||4/5||..||Sep 2008||3,499|
|11.||Nikon D610||4/5||+ +||..||87/100||4.5/5||4.5/5||Oct 2013||1,999|
|12.||Nikon D600||4/5||+ +||..||87/100||5/5||4.5/5||Sep 2012||2,099|
|13.||Sony A9 II||..||..||5/5||90/100||5/5||5/5||Oct 2019||4,499|
|14.||Sony A99 II||..||..||4.5/5||85/100||4.5/5||4.5/5||Sep 2016||3,199|
|15.||Sony A77||5/5||91/100||..||81/100||..||5/5||Aug 2011||1,399|
|16.||Sony A850||3/5||..||..||75/100||..||4.5/5||Aug 2009||1,999|
|17.||Sony A900||..||+ +||..||+ +||4.5/5||5/5||Sep 2008||2,999|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
Care should be taken when interpreting the review scores above, though. The ratings are only valid when referring to cameras in the same category and of the same age. Thus, a score needs to be put into the context of the launch date and the launch price 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.
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. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.
Specifications: Canon 6D vs Sony A99
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 6D||Sony A99|
|Camera Type||Digital single lens reflex||Digital single lens reflex|
|Camera Lens||Canon EF mount lenses||Sony A mount lenses|
|Launch Date||September 2012||September 2012|
|Launch Price||USD 2,099||USD 2,799|
|Sensor Specs||Canon 6D||Sony A99|
|Sensor Format||Full Frame Sensor||Full Frame Sensor|
|Sensor Size||36.0 x 24.0 mm||35.8 x 23.8 mm|
|Sensor Area||864 mm2||852.04 mm2|
|Sensor Diagonal||43.3 mm||43 mm|
|Sensor Resolution||20 Megapixels||24 Megapixels|
|Image Resolution||5472 x 3648 pixels||6000 x 4000 pixels|
|Pixel Pitch||6.57 μm||5.96 μm|
|Pixel Density||2.31 MP/cm2||2.82 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||1080/30p Video||1080/60p Video|
|ISO Setting||100 - 25,600 ISO||100 - 25,600 ISO|
|ISO Boost||50 - 102,400 ISO||50 - 25,600 ISO|
|Image Processor||DIGIC 5+||BIONZ X|
|DXO Sensor Quality (score)||82||89|
|DXO Color Depth (bits)||23.8||25.0|
|DXO Dynamic Range (EV)||12.1||14.0|
|DXO Low Light (ISO)||2340||1555|
|Screen Specs||Canon 6D||Sony A99|
|Viewfinder Type||Optical viewfinder||Electronic viewfinder|
|Viewfinder Field of View||97%||100%|
|Viewfinder Resolution||2359k dots|
|Top-Level Screen||Control Panel||Control Panel|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0inch||3.0inch|
|LCD Resolution||1040k dots||1229k dots|
|LCD Attachment||Fixed screen||Fully flexible screen|
|Shooting Specs||Canon 6D||Sony A99|
|Focus System||Phase-detect AF||Phase-detect AF|
|Manual Focusing Aid||no Peaking Feature||Focus Peaking|
|Max Shutter Speed (mechanical)||1/4000s||1/8000s|
|Continuous Shooting||4.5 shutter flaps/s||6 shutter flaps/s|
|Shutter Life Expectancy||100 000 actuations||200 000 actuations|
|Image Stabilization||Lens stabilization only||In-body stabilization|
|Fill Flash||no On-Board Flash||no On-Board Flash|
|Storage Medium||SDXC cards||MS or SDXC cards|
|Second Storage Option||Single card slot||Dual card slots|
|UHS card support||UHS-I||UHS-I|
|Connectivity Specs||Canon 6D||Sony A99|
|Studio Flash||no PC Sync||PC Sync socket|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||mini HDMI||mini HDMI|
|Microphone Port||External MIC port||External MIC port|
|Headphone Socket||no Headphone port||Headphone port|
|Wifi Support||Wifi built-in||no Wifi|
|Geotagging||GPS built-in||GPS built-in|
|Body Specs||Canon 6D||Sony A99|
|Environmental Sealing||Weathersealed body||Weathersealed body|
|Battery Life (CIPA)||1090 shots per charge||500 shots per charge|
145 x 111 x 71 mm
(5.7 x 4.4 x 2.8 in)
147 x 111 x 78 mm
(5.8 x 4.4 x 3.1 in)
|Camera Weight||770 g (27.2 oz)||812 g (28.6 oz)|
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