Olympus E-M1 II vs Sony A77 II
The Olympus OM-D E-M1 Mark II and the Sony Alpha SLT-A77 II are two enthusiast cameras that were announced, respectively, in September 2016 and May 2014. The E-M1 II is a mirrorless interchangeable lens camera, while the A77 II is a DSLR. The cameras are based on a Four Thirds (E-M1 II) and an APS-C (A77 II) sensor. The Olympus has a resolution of 20.2 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 Olympus OM-D E-M1 Mark II and the Sony Alpha SLT-A77 II? 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.
Body comparison
The physical size and weight of the Olympus E-M1 II and the Sony A77 II are illustrated in the side-by-side display below. 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 width, height and depth measures 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 A77 II is notably larger (22 percent) than the Olympus E-M1 II. Moreover, the A77 II is markedly heavier (13 percent) than the E-M1 II. 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.
Concerning battery life, the E-M1 II gets 440 shots out of its Olympus BLH-1 battery, while the A77 II can take 480 images on a single charge of its Sony NP-FM500H power pack.
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.
# | Camera Model |
Camera Width |
Camera Height |
Camera Depth |
Camera Weight |
Battery Life |
Weather Sealing |
Camera Launch |
Launch Price (USD) |
Street Price |
|
---|---|---|---|---|---|---|---|---|---|---|---|
1. | Olympus E-M1 II | 134 mm | 91 mm | 67 mm | 574 g | 440 | Y | Sep 2016 | 1,999 | ebay.com | |
2. | Sony A77 II | 143 mm | 104 mm | 81 mm | 647 g | 480 | Y | May 2014 | 1,199 | ebay.com | |
3. | Nikon D7100 | 136 mm | 107 mm | 76 mm | 765 g | 950 | Y | Feb 2013 | 1,199 | ebay.com | |
4. | Olympus E-M1 III | 134 mm | 91 mm | 69 mm | 580 g | 420 | Y | Feb 2020 | 1,799 | ebay.com | |
5. | Olympus PEN-F | 125 mm | 72 mm | 37 mm | 427 g | 330 | n | Jan 2016 | 1,199 | ebay.com | |
6. | Olympus E-M1 | 130 mm | 94 mm | 63 mm | 497 g | 350 | Y | Sep 2013 | 1,399 | ebay.com | |
7. | OM System OM-1 II | 135 mm | 92 mm | 73 mm | 599 g | 500 | Y | Jan 2024 | 2,399 | amazon.com | |
8. | OM System OM-1 | 135 mm | 92 mm | 73 mm | 599 g | 520 | Y | Feb 2022 | 2,199 | ebay.com | |
9. | Panasonic GH5 II | 139 mm | 98 mm | 87 mm | 727 g | 400 | Y | May 2021 | 1,699 | amazon.com | |
10. | Panasonic G9 | 137 mm | 97 mm | 92 mm | 658 g | 400 | Y | Nov 2017 | 1,699 | ebay.com | |
11. | Panasonic GH5 | 139 mm | 98 mm | 87 mm | 725 g | 410 | Y | Jan 2017 | 1,999 | ebay.com | |
12. | Panasonic G85 | 128 mm | 89 mm | 74 mm | 505 g | 330 | Y | Sep 2016 | 899 | ebay.com | |
13. | Panasonic GX8 | 133 mm | 78 mm | 63 mm | 487 g | 330 | Y | Jul 2015 | 1,199 | ebay.com | |
14. | Sony A6600 | 120 mm | 67 mm | 69 mm | 503 g | 810 | Y | Aug 2019 | 1,399 | amazon.com | |
15. | Sony A68 | 143 mm | 104 mm | 81 mm | 610 g | 540 | n | Nov 2015 | 699 | ebay.com | |
16. | Sony A58 | 129 mm | 95 mm | 78 mm | 492 g | 690 | n | Feb 2013 | 599 | ebay.com | |
17. | Sony A77 | 143 mm | 104 mm | 81 mm | 732 g | 470 | Y | Aug 2011 | 1,399 | ebay.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 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 A77 II was launched at a markedly lower price (by 40 percent) than the E-M1 II, 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. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.
Sensor comparison
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.
Of the two cameras under consideration, the Olympus E-M1 II features a Four Thirds sensor and the Sony A77 II an APS-C sensor. The sensor area in the A77 II is 63 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 2.0 and 1.5. The sensor in the E-M1 II has a native 4:3 aspect ratio, while the one in the A77 II offers a 3:2 aspect.
With 24MP, the A77 II offers a higher resolution than the E-M1 II (20.2MP), but the A77 II nevertheless has larger individual pixels (pixel pitch of 3.91μm versus 3.34μm for the E-M1 II) due to its larger sensor. However, the E-M1 II is a much more recent model (by 2 years and 4 months) than the A77 II, and its sensor will have benefitted from technological advances during this time that enhance the light gathering capacity of its pixel-units. Coming back to sensor resolution, it should be mentioned that the E-M1 II has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The resolution advantage of the Sony A77 II implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A77 II 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 Olympus E-M1 II are 25.9 x 19.4 inches or 65.8 x 49.4 cm for good quality, 20.7 x 15.6 inches or 52.7 x 39.5 cm for very good quality, and 17.3 x 13 inches or 43.9 x 32.9 cm for excellent quality prints.
The E-M1 II has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
Unlike the A77 II, the E-M1 II has the capacity to capture high quality composite images (50MP) by combining multiple shots after shifting its sensor by miniscule distances. This multi-shot, pixel-shift mode is most suitable for photography of stationary objects (landscapes, studio scenes).
The Olympus OM-D E-M1 Mark II has a native sensitivity range from ISO 200 to ISO 25600, which can be extended to ISO 64-25600. The corresponding ISO settings for the Sony Alpha SLT-A77 II 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 Overall DXO ratings for the two cameras under consideration are close, suggesting that they provide similar imaging performance. The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.
# | Camera Model |
Sensor Class |
Resolution (MP) |
Horiz. Pixels |
Vert. Pixels |
Video Format |
DXO Portrait |
DXO Landscape |
DXO Sports |
DXO Overall |
|
---|---|---|---|---|---|---|---|---|---|---|---|
1. | Olympus E-M1 II | Four Thirds | 20.2 | 5184 | 3888 | 4K/30p | 23.7 | 12.8 | 1312 | 80 | |
2. | Sony A77 II | APS-C | 24.0 | 6000 | 4000 | 1080/60p | 24.4 | 13.4 | 1013 | 82 | |
3. | Nikon D7100 | APS-C | 24.0 | 6000 | 4000 | 1080/60p | 24.2 | 13.7 | 1256 | 83 | |
4. | Olympus E-M1 III | Four Thirds | 20.2 | 5184 | 3888 | 4K/30p | 23.3 | 13.1 | 1356 | 76 | |
5. | Olympus PEN-F | Four Thirds | 20.2 | 5184 | 3888 | 1080/60p | 23.1 | 12.4 | 894 | 74 | |
6. | Olympus E-M1 | Four Thirds | 15.9 | 4608 | 3456 | 1080/30p | 23.0 | 12.7 | 757 | 73 | |
7. | OM System OM-1 II | Four Thirds | 20.2 | 5184 | 3888 | 4K/60p | 23.4 | 13.6 | 1749 | 78 | |
8. | OM System OM-1 | Four Thirds | 20.2 | 5184 | 3888 | 4K/60p | 23.4 | 13.4 | 1553 | 77 | |
9. | Panasonic GH5 II | Four Thirds | 20.2 | 5184 | 3888 | 4K/60p | 23.7 | 13.1 | 1136 | 79 | |
10. | Panasonic G9 | Four Thirds | 20.2 | 5184 | 3888 | 4K/60p | 23.1 | 12.8 | 1138 | 74 | |
11. | Panasonic GH5 | Four Thirds | 20.2 | 5184 | 3888 | 4K/60p | 23.9 | 13.0 | 807 | 77 | |
12. | Panasonic G85 | Four Thirds | 15.8 | 4592 | 3448 | 4K/30p | 22.8 | 12.5 | 656 | 71 | |
13. | Panasonic GX8 | Four Thirds | 20.2 | 5184 | 3888 | 4K/30p | 23.5 | 12.6 | 806 | 75 | |
14. | Sony A6600 | APS-C | 24.0 | 6000 | 4000 | 4K/30p | 23.8 | 13.4 | 1497 | 82 | |
15. | Sony A68 | APS-C | 24.0 | 6000 | 4000 | 1080/60i | 24.1 | 13.5 | 701 | 79 | |
16. | Sony A58 | APS-C | 19.8 | 5456 | 3632 | 1080/60i | 23.3 | 12.5 | 753 | 74 | |
17. | Sony A77 | APS-C | 24.0 | 6000 | 4000 | 1080/60p | 24.0 | 13.2 | 801 | 78 | |
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 two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the E-M1 II provides a higher video resolution than the A77 II. It can shoot video footage at 4K/30p, while the Sony is limited to 1080/60p.
Feature comparison
Apart from body and sensor, cameras can and do differ across a variety of features. The two cameras under consideration are similar with respect to both having an electronic viewfinder. However, the one in the E-M1 II offers a slightly higher resolution than the one in the A77 II (2360k vs 2359k dots). The table below summarizes some of the other core capabilities of the Olympus E-M1 II and Sony A77 II in connection with corresponding information for a sample of similar cameras.
# | 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. | Olympus E-M1 II | 2360 | n | 3.0 / 1037 | swivel | Y | 1/8000s | 18.0/s | n | Y | |
2. | Sony A77 II | 2359 | Y | 3.0 / 1229 | full-flex | n | 1/8000s | 12.0/s | Y | Y | |
3. | Nikon D7100 | optical | Y | 3.2 / 1229 | fixed | n | 1/8000s | 6.0/s | Y | n | |
4. | Olympus E-M1 III | 2360 | n | 3.0 / 1037 | swivel | Y | 1/8000s | 18.0/s | n | Y | |
5. | Olympus PEN-F | 2360 | n | 3.0 / 1037 | swivel | Y | 1/8000s | 10.0/s | n | Y | |
6. | Olympus E-M1 | 2360 | n | 3.0 / 1037 | tilting | Y | 1/8000s | 10.0/s | n | Y | |
7. | OM System OM-1 II | 5760 | n | 3.0 / 1640 | swivel | Y | 1/8000s | 10.0/s | n | Y | |
8. | OM System OM-1 | 5760 | n | 3.0 / 1640 | swivel | Y | 1/8000s | 10.0/s | n | Y | |
9. | Panasonic GH5 II | 3680 | n | 3.0 / 1840 | swivel | Y | 1/8000s | 12.0/s | n | Y | |
10. | Panasonic G9 | 3680 | Y | 3.0 / 1040 | swivel | Y | 1/8000s | 20.0/s | n | Y | |
11. | Panasonic GH5 | 3680 | n | 3.2 / 1620 | swivel | Y | 1/8000s | 12.0/s | n | Y | |
12. | Panasonic G85 | 2360 | n | 3.0 / 1040 | swivel | Y | 1/4000s | 9.0/s | Y | Y | |
13. | Panasonic GX8 | 2360 | n | 3.0 / 1040 | swivel | Y | 1/8000s | 10.0/s | n | Y | |
14. | Sony A6600 | 2359 | n | 3.0 / 922 | tilting | Y | 1/4000s | 11.0/s | n | Y | |
15. | Sony A68 | 1440 | Y | 2.7 / 460 | tilting | n | 1/4000s | 8.0/s | Y | Y | |
16. | Sony A58 | 1440 | n | 2.7 / 460 | tilting | n | 1/4000s | 5.0/s | Y | Y | |
17. | Sony A77 | 2359 | Y | 3.0 / 921 | full-flex | n | 1/8000s | 12.0/s | Y | Y | |
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 E-M1 II has a touchscreen, while the A77 II has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.
Both cameras have an articulated rear screen that can be turned to be front-facing. This feature will be particularly appreciated by vloggers and photographers who are interested in taking selfies.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 E-M1 II 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 Olympus E-M1 II 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 E-M1 II writes its imaging data to SDXC cards, while the A77 II uses SDXC or Memory Stick PRO Duo cards. The E-M1 II features dual card slots, which can be very useful in case a memory card fails. In contrast, the A77 II only has one slot. The E-M1 II supports UHS-II cards (on its first slot), while the A77 II can use UHS-I cards.
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 Olympus OM-D E-M1 Mark II and Sony Alpha SLT-A77 II and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
# | Camera Model |
Hotshoe Port |
Internal Mic / Speaker |
Microphone Port |
Headphone Port |
HDMI Port |
USB Port |
WiFi Support |
NFC Support |
Bluetooth Support |
|
---|---|---|---|---|---|---|---|---|---|---|---|
1. | Olympus E-M1 II | Y | stereo / mono | Y | Y | micro | 3.0 | Y | - | - | |
2. | Sony A77 II | Y | stereo / mono | Y | - | mini | 2.0 | Y | Y | - | |
3. | Nikon D7100 | Y | stereo / mono | Y | Y | mini | 2.0 | - | - | - | |
4. | Olympus E-M1 III | Y | stereo / mono | Y | Y | micro | 3.1 | Y | - | Y | |
5. | Olympus PEN-F | Y | stereo / mono | - | - | micro | 2.0 | Y | - | - | |
6. | Olympus E-M1 | Y | stereo / mono | Y | - | micro | 2.0 | Y | - | - | |
7. | OM System OM-1 II | Y | stereo / mono | Y | Y | micro | 3.0 | Y | - | Y | |
8. | OM System OM-1 | Y | stereo / mono | Y | Y | micro | 3.0 | Y | - | Y | |
9. | Panasonic GH5 II | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | Y | |
10. | Panasonic G9 | Y | stereo / mono | Y | Y | full | 3.0 | Y | - | Y | |
11. | Panasonic GH5 | Y | stereo / mono | Y | Y | full | 3.1 | Y | - | Y | |
12. | Panasonic G85 | Y | stereo / mono | Y | - | micro | 2.0 | Y | - | - | |
13. | Panasonic GX8 | Y | stereo / mono | Y | - | micro | 2.0 | Y | Y | - | |
14. | Sony A6600 | Y | stereo / mono | Y | Y | YES | 2.0 | Y | Y | Y | |
15. | Sony A68 | Y | stereo / mono | Y | - | micro | 2.0 | - | - | - | |
16. | Sony A58 | Y | stereo / mono | Y | - | mini | 2.0 | - | - | - | |
17. | Sony A77 | Y | stereo / mono | Y | - | mini | 2.0 | - | - | - |
It is notable that the E-M1 II has a headphone jack, which is not present on the A77 II This port makes it possible to attach external headphones and monitor the quality of sound during the recording process.
Both cameras feature a PC Sync terminal to control professional strobe lights, which will be appreciated by studio photographers.
Both the E-M1 II and the A77 II have been discontinued, but can regularly be found used on ebay. The E-M1 II was replaced by the Olympus E-M1 III, while the A77 II does not have a direct successor. Further information on the features and operation of the E-M1 II and A77 II can be found, respectively, in the Olympus E-M1 II Manual (free pdf) or the online Sony A77 II Manual.
Review summary
So what conclusions can be drawn? Which of the two cameras – the Olympus E-M1 II or the Sony A77 II – has the upper hand? Is one clearly better than the other? A synthesis of the relative strong points of each of the models is listed below.
Reasons to prefer the Olympus OM-D E-M1 Mark II:
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- High quality composites: Can combine several shots after pixel-shifting its sensor.
- Better low-light sensitivity: Requires less light for good images (0.4 stops ISO advantage).
- Better video: Provides higher definition movie capture (4K/30p vs 1080/60p).
- Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
- Better sound control: Has a headphone port that enables audio monitoring while recording.
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.74x vs 0.73x).
- Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
- Faster burst: Shoots at higher frequency (18 vs 12 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.
- More compact: Is smaller (134x91mm vs 143x104mm) and thus needs less room in the bag.
- Less heavy: Is lighter (by 73g or 11 percent) and hence easier to carry around.
- More legacy lens friendly: Can take a broad range of non-native lenses via adapters.
- Faster data transfer: Supports a more advanced USB protocol (3.0 vs 2.0).
- Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
- Faster buffer clearing: Supports a more advanced SD data transfer standard (UHS-II vs UHS-I).
- More modern: Reflects 2 years and 4 months of technical progress since the A77 II launch.
Advantages of the Sony Alpha SLT-A77 II:
- More detail: Has more megapixels (24 vs 20.2MP), which boosts linear resolution by 11%.
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- More dynamic range: Captures a broader range of light and dark details (0.6 EV of extra DR).
- Easier setting verification: Features a control panel on top to check shooting parameters.
- More detailed LCD: Has a higher resolution rear screen (1229k vs 1037k dots).
- Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
- Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
- More affordable: Was introduced into a lower priced category (40 percent cheaper at launch).
- More heavily discounted: Has been around for much longer (launched in May 2014).
If the count of relative strengths (bullet points above) is taken as a measure, the E-M1 II is the clear winner of the match-up (18 : 9 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 wildlife photographer will view the differences between cameras in a way that diverges from the perspective of a family photog, and a person interested in architecture has distinct needs from a sports 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 Olympus E-M1 II and the Sony A77 II place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens 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 E-M1 II or the A77 II perform in practice. 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.
Expert reviews
This is where reviews by experts come in. 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.
# | Camera Model |
AP score |
CL score |
DCW score |
DPR score |
EPZ score |
PB score |
Camera Launch |
Launch Price (USD) |
Street Price |
|
---|---|---|---|---|---|---|---|---|---|---|---|
1. | Olympus E-M1 II | 5/5 | + + | 5/5 | 85/100 | 4.5/5 | 4.5/5 | Sep 2016 | 1,999 | ebay.com | |
2. | Sony A77 II | 4/5 | .. | .. | 80/100 | 4.5/5 | 5/5 | May 2014 | 1,199 | ebay.com | |
3. | Nikon D7100 | 5/5 | + + | .. | 85/100 | 4.5/5 | 4.5/5 | Feb 2013 | 1,199 | ebay.com | |
4. | Olympus E-M1 III | 5/5 | .. | 5/5 | 83/100 | 4.5/5 | 4/5 | Feb 2020 | 1,799 | ebay.com | |
5. | Olympus PEN-F | .. | .. | 4/5 | 82/100 | 4.5/5 | 5/5 | Jan 2016 | 1,199 | ebay.com | |
6. | Olympus E-M1 | 5/5 | + + | .. | 84/100 | 4.5/5 | 4.5/5 | Sep 2013 | 1,399 | ebay.com | |
7. | OM System OM-1 II | .. | .. | .. | .. | .. | .. | Jan 2024 | 2,399 | amazon.com | |
8. | OM System OM-1 | 5/5 | .. | .. | 87/100 | 5/5 | 4.5/5 | Feb 2022 | 2,199 | ebay.com | |
9. | Panasonic GH5 II | 4.5/5 | .. | 4.5/5 | 85/100 | 4.5/5 | 5/5 | May 2021 | 1,699 | amazon.com | |
10. | Panasonic G9 | .. | + + | 5/5 | 85/100 | 5/5 | 5/5 | Nov 2017 | 1,699 | ebay.com | |
11. | Panasonic GH5 | 4.5/5 | + + | .. | 85/100 | 4.5/5 | 5/5 | Jan 2017 | 1,999 | ebay.com | |
12. | Panasonic G85 | .. | + + | .. | 84/100 | 5/5 | 4.5/5 | Sep 2016 | 899 | ebay.com | |
13. | Panasonic GX8 | 5/5 | + | .. | 82/100 | 4.5/5 | 4.5/5 | Jul 2015 | 1,199 | ebay.com | |
14. | Sony A6600 | 4/5 | + | 4/5 | 83/100 | 4.5/5 | 4/5 | Aug 2019 | 1,399 | amazon.com | |
15. | Sony A68 | 3/5 | .. | .. | .. | 4/5 | 4/5 | Nov 2015 | 699 | ebay.com | |
16. | Sony A58 | 3/5 | .. | .. | .. | 4.5/5 | 4.5/5 | Feb 2013 | 599 | ebay.com | |
17. | Sony A77 | 5/5 | 91/100 | .. | 81/100 | .. | 5/5 | Aug 2011 | 1,399 | ebay.com | |
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available. |
The above review scores should be interpreted with care, though. The ratings are only valid when referring 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 rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. 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 are interested in seeing how other cameras pair up, just make your choice using the following search menu. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.
- Canon 20D vs Sony A77 II
- Canon 350D vs Olympus E-M1 II
- Canon 450D vs Olympus E-M1 II
- Canon 500D vs Sony A77 II
- Canon SL3 vs Olympus E-M1 II
- Canon T7 vs Sony A77 II
- Fujifilm X70 vs Sony A77 II
- Leica CL vs Olympus E-M1 II
- Nikon D50 vs Olympus E-M1 II
- Nikon Z50 vs Olympus E-M1 II
- Panasonic FZ1000 vs Sony A77 II
- Panasonic GF5 vs Sony A77 II
Specifications: Olympus E-M1 II vs Sony A77 II
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 | Olympus E-M1 II | Sony A77 II |
---|---|---|
Camera Type | Mirrorless system camera | Digital single lens reflex |
Camera Lens | Micro Four Thirds lenses | Sony A mount lenses |
Launch Date | September 2016 | May 2014 |
Launch Price | USD 1,999 | USD 1,199 |
Sensor Specs | Olympus E-M1 II | Sony A77 II |
Sensor Technology | CMOS | CMOS |
Sensor Format | Four Thirds Sensor | APS-C Sensor |
Sensor Size | 17.3 x 13.0 mm | 23.5 x 15.6 mm |
Sensor Area | 224.9 mm2 | 366.6 mm2 |
Sensor Diagonal | 21.6 mm | 28.2 mm |
Crop Factor | 2.0x | 1.5x |
Sensor Resolution | 20.2 Megapixels | 24 Megapixels |
Image Resolution | 5184 x 3888 pixels | 6000 x 4000 pixels |
Pixel Pitch | 3.34 μm | 3.91 μm |
Pixel Density | 8.96 MP/cm2 | 6.55 MP/cm2 |
Moiré control | no AA filter | Anti-Alias filter |
Movie Capability | 4K/30p Video | 1080/60p Video |
ISO Setting | 200 - 25,600 ISO | 100 - 25,600 ISO |
ISO Boost | 64 - 25,600 ISO | 50 - 51,200 ISO |
Image Processor | TruePic VIII | BIONZ X |
DXO Sensor Quality (score) | 80 | 82 |
DXO Color Depth (bits) | 23.7 | 24.4 |
DXO Dynamic Range (EV) | 12.8 | 13.4 |
DXO Low Light (ISO) | 1312 | 1013 |
Screen Specs | Olympus E-M1 II | Sony A77 II |
Viewfinder Type | Electronic viewfinder | Electronic viewfinder |
Viewfinder Field of View | 100% | 100% |
Viewfinder Magnification | 0.74x | 0.73x |
Viewfinder Resolution | 2360k dots | 2359k dots |
Top-Level Screen | no Top Display | Control Panel |
LCD Framing | Live View | Live View |
Rear LCD Size | 3.0inch | 3.0inch |
LCD Resolution | 1037k dots | 1229k dots |
LCD Attachment | Swivel screen | Fully flexible screen |
Touch Input | Touchscreen | no Touchscreen |
Shooting Specs | Olympus E-M1 II | Sony A77 II |
Focus System | On-Sensor Phase-detect | Phase-detect AF |
Manual Focusing Aid | Focus Peaking | Focus Peaking |
Max Shutter Speed (mechanical) | 1/8000s | 1/8000s |
Continuous Shooting | 18 shutter flaps/s | 12 shutter flaps/s |
Shutter Life Expectancy | 200 000 actuations | 150 000 actuations |
Electronic Shutter | up to 1/32000s | no E-Shutter |
Time-Lapse Photography | Intervalometer built-in | no Intervalometer |
Image Stabilization | In-body stabilization | In-body stabilization |
Fill Flash | no On-Board Flash | Built-in Flash |
Storage Medium | SDXC cards | MS or SDXC cards |
Single or Dual Card Slots | Dual card slots | Single card slot |
UHS card support | Single UHS-II | UHS-I |
Connectivity Specs | Olympus E-M1 II | Sony A77 II |
External Flash | Hotshoe | Hotshoe |
Studio Flash | PC Sync socket | PC Sync socket |
USB Connector | USB 3.0 | USB 2.0 |
HDMI Port | micro HDMI | mini HDMI |
Microphone Port | External MIC port | External MIC port |
Headphone Socket | Headphone port | no Headphone port |
Wifi Support | Wifi built-in | Wifi built-in |
Near-Field Communication | no NFC | NFC built-in |
Body Specs | Olympus E-M1 II | Sony A77 II |
Environmental Sealing | Weathersealed body | Weathersealed body |
Battery Type | Olympus BLH-1 | Sony NP-FM500H |
Battery Life (CIPA) | 440 shots per charge | 480 shots per charge |
Body Dimensions |
134 x 91 x 67 mm (5.3 x 3.6 x 2.6 in) |
143 x 104 x 81 mm (5.6 x 4.1 x 3.2 in) |
Camera Weight | 574 g (20.2 oz) | 647 g (22.8 oz) |
Did you notice an error on this page? If so, please get in touch, so that we can correct the information.