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Panasonic GX85 vs Sony A850

The Panasonic Lumix DMC-GX85 (called Panasonic GX80 in some regions) and the Sony Alpha A850 are two digital cameras that were revealed to the public, respectively, in April 2016 and August 2009. The GX85 is a mirrorless interchangeable lens camera, while the A850 is a DSLR. The cameras are based on a Four Thirds (GX85) and a full frame (A850) sensor. The Panasonic has a resolution of 15.8 megapixels, whereas the Sony provides 24.4 MP.

Below is an overview of the main specs of the two cameras as a starting point for the comparison.

Headline Specifications
Panasonic GX85
versus
Sony A850
Panasonic GX85   Sony A850
Mirrorless system camera Digital single lens reflex
Micro Four Thirds lenses Sony A mount lenses
15.8 MP – Four Thirds sensor 24.4 MP – Full Frame sensor
4K/30p Video no Video
ISO 200-25,600 ISO 200-3,200 (100 - 6,400)
Electronic viewfinder (2765k dots) Optical viewfinder
3.0" LCD – 1040k dots 3.0" LCD – 922k dots
Tilting touchscreen Fixed screen (not touch-sensitive)
8 shutter flaps per second 3 shutter flaps per second
In-body stabilizationIn-body stabilization
not weather sealedWeathersealed body
290 shots per battery charge880 shots per battery charge
122 x 71 x 44 mm, 426 g 156 x 117 x 82 mm, 895 g
Panasonic GX85:
Check Amazon price
Sony A850:
Check Ebay offers

Going beyond this snapshot of core features and characteristics, what are the differences between the Panasonic Lumix DMC-GX85 and the Sony Alpha A850? 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

An illustration of the physical size and weight of the Panasonic GX85 and the Sony A850 is provided 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.

The GX85 can be obtained in two different colors (black, silver), while the A850 is only available in black.

Size Panasonic GX85 vs Sony A850
Compare GX85 versus A850 top
Comparison GX85 or A850 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A850 is considerably larger (111 percent) than the Panasonic GX85. Moreover, the A850 is substantially heavier (110 percent) than the GX85. It is noteworthy in this context that the A850 is splash and dust-proof, while the GX85 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. 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 GX85 gets 290 shots out of its DMW-BLG10 battery, while the A850 can take 880 images on a single charge of its NP-FM500H power pack. The power pack in the GX85 can be charged via the USB port, so that it is not always necessary to take the battery charger along when travelling.

The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. 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.

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Body Specifications
    Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Panasonic GX85 122 mm 71 mm 44 mm 426 g 290 n Apr 2016 799 i
2.
 
Sony A850 156 mm 117 mm 82 mm 895 g 880 Y Aug 2009 1,999i
3.
 
Nikon D750 141 mm 113 mm 78 mm 750 g 1230 Y Sep 2014 2,299i
4.
 
Olympus E-PL8 115 mm 67 mm 38 mm 357 g 350 n Sep 2016 549i
5.
 
Olympus E-M10 II 120 mm 83 mm 47 mm 390 g 320 n Aug 2015 649i
6.
 
Olympus E-M10 119 mm 82 mm 46 mm 396 g 320 n Jan 2014 699i
7.
 
Panasonic GX9 124 mm 72 mm 47 mm 407 g 260 n Feb 2018 849 i
8.
 
Panasonic G85 128 mm 89 mm 74 mm 505 g 330 Y Sep 2016 899i
9.
 
Panasonic G7 125 mm 86 mm 77 mm 410 g 350 n May 2015 649i
10.
 
Panasonic GX8 133 mm 78 mm 63 mm 487 g 330 Y Jul 2015 1,199i
11.
 
Panasonic GM5 99 mm 60 mm 36 mm 211 g 220 n Sep 2014 749i
12.
 
Panasonic GX7 123 mm 71 mm 55 mm 402 g 350 n Aug 2013 999i
13.
 
Panasonic GH2 124 mm 90 mm 76 mm 442 g 330 n Sep 2010 899i
14.
 
Sony A7C 124 mm 71 mm 60 mm 509 g 740 Y Sep 2020 1,799 i
15.
 
Sony A7 III 127 mm 96 mm 74 mm 650 g 610 Y Feb 2018 1,999 i
16.
 
Sony A99 147 mm 111 mm 78 mm 812 g 500 Y Sep 2012 2,799i
17.
 
Sony A900 156 mm 117 mm 82 mm 895 g 880 Y Sep 2008 2,999i
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 retail prices at the time of the camera’s release place the model in the market relative to other models in the producer’s line-up and the competition. The GX85 was launched at a markedly lower price (by 60 percent) than the A850, 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.

Sensor comparison

The size of the imaging sensor is a crucial determinant 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. Furthermore, a large sensor camera will give the photographer more possibilities to use shallow depth-of-field in order to isolate a subject from the background. On the downside, larger sensors tend to be associated with larger, more expensive camera bodies and lenses.

Of the two cameras under consideration, the Panasonic GX85 features a Four Thirds sensor and the Sony A850 a full frame sensor. The sensor area in the A850 is 283 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 2.0 and 1.0. The sensor in the GX85 has a native 4:3 aspect ratio, while the one in the A850 offers a 3:2 aspect.

Panasonic GX85 and Sony A850 sensor measures

With 24.4MP, the A850 offers a higher resolution than the GX85 (15.8MP), but the A850 nevertheless has larger individual pixels (pixel pitch of 5.94μm versus 3.77μm for the GX85) due to its larger sensor. However, the GX85 is a much more recent model (by 6 years and 7 months) than the A850, 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 GX85 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Sony A850 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A850 for good quality output (200 dots per inch) amounts to 30.2 x 20.2 inches or 76.8 x 51.2 cm, for very good quality (250 dpi) 24.2 x 16.1 inches or 61.4 x 41 cm, and for excellent quality (300 dpi) 20.2 x 13.4 inches or 51.2 x 34.1 cm. The corresponding values for the Panasonic GX85 are 23 x 17.2 inches or 58.3 x 43.8 cm for good quality, 18.4 x 13.8 inches or 46.7 x 35 cm for very good quality, and 15.3 x 11.5 inches or 38.9 x 29.2 cm for excellent quality prints.

The Panasonic Lumix DMC-GX85 has a native sensitivity range from ISO 200 to ISO 25600, which can be extended to ISO 100-25600. The corresponding ISO settings for the Sony Alpha A850 are ISO 200 to ISO 3200, with the possibility to increase the ISO range to 100-6400.

GX85 versus A850 MP

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"). Of the two cameras under consideration, the A850 has a markedly higher DXO score than the GX85 (overall score 8 points higher), which will translate into better image quality. The advantage is based on 0.9 bits higher color depth, 0.4 EV of lower dynamic range, and 1.1 stops in additional low light sensitivity. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.

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Sensor Characteristics
    Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Panasonic GX85 Four Thirds 15.8 4592 34484K/30p22.912.666271
2.
 
Sony A850 Full Frame 24.4 6048 4032none23.812.2141579
3.
 
Nikon D750 Full Frame 24.2 6016 40161080/60p24.814.5295693
4.
 
Olympus E-PL8 Four Thirds 15.9 4608 34561080/30p23.012.6103073
5.
 
Olympus E-M10 II Four Thirds 15.9 4608 34561080/60p23.112.584273
6.
 
Olympus E-M10 Four Thirds 15.9 4608 34561080/30p22.812.388472
7.
 
Panasonic GX9 Four Thirds 20.2 5184 38884K/30p23.112.8116374
8.
 
Panasonic G85 Four Thirds 15.8 4592 34484K/30p22.812.565671
9.
 
Panasonic G7 Four Thirds 15.8 4592 34484K/30p22.812.490471
10.
 
Panasonic GX8 Four Thirds 20.2 5184 38884K/30p23.512.680675
11.
 
Panasonic GM5 Four Thirds 15.8 4592 34481080/60p22.111.772166
12.
 
Panasonic GX7 Four Thirds 15.8 4592 34481080/60p22.612.271870
13.
 
Panasonic GH2 Four Thirds 15.9 4608 34561080/60i21.211.365560
14.
 
Sony A7C Full Frame 24.0 6000 40004K/30p25.014.7340795
15.
 
Sony A7 III Full Frame 24.0 6000 40004K/30p25.014.7373096
16.
 
Sony A99 Full Frame 24.0 6000 40001080/60p25.014.0155589
17.
 
Sony A900 Full Frame 24.4 6048 4032none23.712.3143179
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 GX85 indeed provides movie recording capabilities, while the A850 does not. The highest resolution format that the GX85 can use is 4K/30p.

Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. For example, the GX85 has an electronic viewfinder (2765k dots), while the A850 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 GX85 offers a wider field of view (100%) than the one in the A850 (98%), so that a larger proportion of the captured image is visible in the finder. On the other hand, the viewfinder of the A850 has a higher magnification (0.74x vs 0.70x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The following table reports on some other key feature differences and similarities of the Panasonic GX85, the Sony A850, and comparable cameras.

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Core Features
    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.
 
Panasonic GX852765 n3.0 / 1040 tilting Y 1/4000s 8.0/s Y Y
2.
 
Sony A850optical Y3.0 / 922 fixed n 1/8000s 3.0/s n Y
3.
 
Nikon D750optical Y3.2 / 1229 tilting n 1/4000s 6.0/s Y n
4.
 
Olympus E-PL8optional n3.0 / 1037 tilting Y 1/4000s 8.0/s n Y
5.
 
Olympus E-M10 II2360 n3.0 / 1040 tilting Y 1/4000s 8.0/s Y Y
6.
 
Olympus E-M101440 n3.0 / 1037 tilting Y 1/4000s 8.0/s Y Y
7.
 
Panasonic GX92760 n3.0 / 1240 tilting Y 1/4000s 9.0/s Y Y
8.
 
Panasonic G852360 n3.0 / 1040 swivel Y 1/4000s 9.0/s Y Y
9.
 
Panasonic G72360 n3.0 / 1040 swivel Y 1/4000s 7.0/s Y n
10.
 
Panasonic GX82360 n3.0 / 1040 swivel Y 1/8000s 10.0/s n Y
11.
 
Panasonic GM51166 n3.0 / 921 fixed Y 1/500s 5.8/s n n
12.
 
Panasonic GX72760 n3.0 / 1040 tilting Y 1/8000s 5.0/s Y Y
13.
 
Panasonic GH21534 n3.0 / 460 swivel n 1/4000s 3.0/s Y n
14.
 
Sony A7C2360 n3.0 / 922 swivel Y 1/4000s 10.0/s n Y
15.
 
Sony A7 III2359 n3.0 / 922 tilting Y 1/8000s 10.0/s n Y
16.
 
Sony A992359 Y3.0 / 1229 full-flex n 1/8000s 6.0/s n Y
17.
 
Sony A900optical Y3.0 / 922 fixed n 1/8000s 5.0/s n Y
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 GX85 has one, while the A850 does not. While the built-in flash of the GX85 is not very powerful, it can at times be useful as a fill-in light.

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 GX85 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 Panasonic GX85 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 GX85 writes its imaging data to SDXC cards, while the A850 uses Compact Flash or Memory Stick PRO Duo cards. The A850 features dual card slots, which can be very useful in case a memory card fails. In contrast, the GX85 only has one slot.

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 Panasonic Lumix DMC-GX85 and Sony Alpha A850 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
    Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Panasonic GX85Ystereo / mono--micro2.0Y--
2.
 
Sony A850Y- / ---mini2.0---
3.
 
Nikon D750Ystereo / monoYYmini2.0Y--
4.
 
Olympus E-PL8Ystereo / mono--micro2.0Y--
5.
 
Olympus E-M10 IIYstereo / mono--micro2.0Y--
6.
 
Olympus E-M10Ystereo / mono--micro2.0Y--
7.
 
Panasonic GX9Ystereo / mono--micro2.0Y-Y
8.
 
Panasonic G85Ystereo / monoY-micro2.0Y--
9.
 
Panasonic G7Ystereo / monoY-micro2.0Y--
10.
 
Panasonic GX8Ystereo / monoY-micro2.0YY-
11.
 
Panasonic GM5Ystereo / mono--micro2.0Y--
12.
 
Panasonic GX7Ystereo / mono--mini2.0YY-
13.
 
Panasonic GH2Ystereo / monoY-mini2.0---
14.
 
Sony A7CYstereo / monoYYmicro3.2YYY
15.
 
Sony A7 IIIYstereo / monoYYmicro3.1YYY
16.
 
Sony A99Ystereo / monoYYmini2.0---
17.
 
Sony A900Y- / ---mini2.0---

It is notable that the GX85 offers wifi support, while the A850 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 A850 (unlike the GX85) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

The GX85 is a recent model that features in the current product line-up of Panasonic. In contrast, the A850 has been discontinued (but can be found pre-owned on eBay). There has not been a direct replacement model for the A850 from Sony. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Panasonic and Sony websites.

Review summary

So what is the bottom line? Is the Panasonic GX85 better than the Sony A850 or vice versa? The listing below highlights the relative strengths of the two models.

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Reasons to prefer the Panasonic Lumix DMC-GX85:

  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • Broader imaging potential: Can record not only still images but also 4K/30p movies.
  • 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 98%).
  • More detailed LCD: Has a higher resolution rear screen (1040k vs 922k dots).
  • More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
  • Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
  • Faster burst: Shoots at higher frequency (8 vs 3 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 (122x71mm vs 156x117mm) and thus needs less room in the bag.
  • Less heavy: Is lighter (by 469g or 52 percent) and hence easier to carry around.
  • Easier travel charging: Can be conveniently charged via its USB port.
  • More legacy lens friendly: Can take a broad range of non-native lenses via adapters.
  • Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
  • Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
  • More affordable: Was introduced into a lower priced category (60 percent cheaper at launch).
  • More modern: Reflects 6 years and 7 months of technical progress since the A850 launch.

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Arguments in favor of the Sony Alpha A850:

  • More detail: Has more megapixels (24.4 vs 15.8MP), which boosts linear resolution by 27%.
  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Better image quality: Scores markedly higher (8 points) in the DXO overall evaluation.
  • Better low-light sensitivity: Can shoot in dim conditions (1.1 stops ISO advantage).
  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.74x vs 0.70x).
  • Easier setting verification: Features a control panel on top to check shooting parameters.
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • Longer lasting: Gets more shots (880 versus 290) out of a single battery charge.
  • Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
  • 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.
  • More heavily discounted: Has been around for much longer (launched in August 2009).

If the count of relative strengths (bullet points above) is taken as a measure, the GX85 is the clear winner of the match-up (18 : 13 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.

GX85 18:13 A850

How about other alternatives? Do the specifications of the Panasonic GX85 and the Sony A850 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 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 GX85 and the A850 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.

Expert reviews

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.

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Expert Camera Reviews
     Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Panasonic GX854.5/5+ +..82/1005/55/5 Apr 2016 799 i
2.
 
Sony A8503/5....75/100..4.5/5 Aug 2009 1,999i
3.
 
Nikon D7505/5+ +4/590/1004.5/54.5/5 Sep 2014 2,299i
4.
 
Olympus E-PL8........4.5/54/5 Sep 2016 549i
5.
 
Olympus E-M10 II4.5/5+ +..80/1005/55/5 Aug 2015 649i
6.
 
Olympus E-M104/5....80/1005/55/5 Jan 2014 699i
7.
 
Panasonic GX94/5+4/584/1004.5/54.5/5 Feb 2018 849 i
8.
 
Panasonic G85..+ +..84/1005/54.5/5 Sep 2016 899i
9.
 
Panasonic G74/5+ +..80/1005/54.5/5 May 2015 649i
10.
 
Panasonic GX85/5+..82/1004.5/54.5/5 Jul 2015 1,199i
11.
 
Panasonic GM53.5/5+..77/1005/54.5/5 Sep 2014 749i
12.
 
Panasonic GX74/5+..79/1005/55/5 Aug 2013 999i
13.
 
Panasonic GH25/5+ +..79/1004.5/55/5 Sep 2010 899i
14.
 
Sony A7C3.5/5..3.5/586/1004/54/5 Sep 2020 1,799 i
15.
 
Sony A7 III..+ +4.5/589/1005/55/5 Feb 2018 1,999 i
16.
 
Sony A995/5....84/1004.5/54.5/5 Sep 2012 2,799i
17.
 
Sony A900..+ +..+ +4.5/55/5 Sep 2008 2,999i
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. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and comparisons of ratings among very different cameras or across long time periods have little meaning. It should also be noted that some of the review sites have over time altered the way they render their verdicts.

Panasonic GX85:
Check Amazon price
Sony A850:
Check Ebay offers

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.

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    Specifications: Panasonic GX85 vs Sony A850

    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 Specifications
    Camera Model Panasonic GX85 Sony A850
    Camera Type Mirrorless system camera Digital single lens reflex
    Camera Lens Micro Four Thirds lenses Sony A mount lenses
    Launch Date April 2016 August 2009
    Launch Price USD 799 USD 1,999
    Sensor Specs Panasonic GX85 Sony A850
    Sensor Technology CMOS CMOS
    Sensor Format Four Thirds Sensor Full Frame Sensor
    Sensor Size 17.3 x 13.0 mm 35.9 x 24.0 mm
    Sensor Area 224.9 mm2 861.6 mm2
    Sensor Diagonal 21.6 mm 43.2 mm
    Crop Factor 2.0x 1.0x
    Sensor Resolution 15.8 Megapixels 24.4 Megapixels
    Image Resolution 4592 x 3448 pixels 6048 x 4032 pixels
    Pixel Pitch 3.77 μm 5.94 μm
    Pixel Density 7.04 MP/cm2 2.83 MP/cm2
    Moiré control no AA filter Anti-Alias filter
    Movie Capability 4K/30p Video no Video
    ISO Setting 200 - 25,600 ISO 200 - 3,200 ISO
    ISO Boost 100 - 25,600 ISO 100 - 6,400 ISO
    Image Processor Venus BIONZ
    DXO Sensor Quality (score) 71 79
    DXO Color Depth (bits) 22.9 23.8
    DXO Dynamic Range (EV) 12.6 12.2
    DXO Low Light (ISO) 662 1415
    Screen Specs Panasonic GX85 Sony A850
    Viewfinder Type Electronic viewfinder Optical viewfinder
    Viewfinder Field of View 100% 98%
    Viewfinder Magnification 0.70x 0.74x
    Viewfinder Resolution 2765k dots
    Top-Level Screen no Top Display Control Panel
    LCD Framing Live View
    Rear LCD Size 3.0inch 3.0inch
    LCD Resolution 1040k dots 922k dots
    LCD Attachment Tilting screen Fixed screen
    Touch Input Touchscreen no Touchscreen
    Shooting Specs Panasonic GX85 Sony A850
    Focus System Contrast-detect AF Phase-detect AF
    Manual Focusing AidFocus Peakingno Peaking Feature
    Continuous Shooting 8 shutter flaps/s 3 shutter flaps/s
    Electronic Shutterup to 1/16000sno E-Shutter
    Time-Lapse PhotographyIntervalometer built-inno Intervalometer
    Image StabilizationIn-body stabilizationIn-body stabilization
    Fill Flash Built-in Flash no On-Board Flash
    Storage Medium SDXC cards CF or MS cards
    Second Storage Option Single card slot Dual card slots
    Connectivity Specs Panasonic GX85 Sony A850
    External Flash Hotshoe Hotshoe
    Studio Flash no PC Sync PC Sync socket
    USB Connector USB 2.0 USB 2.0
    HDMI Port micro HDMI mini HDMI
    Wifi Support Wifi built-in no Wifi
    Body Specs Panasonic GX85 Sony A850
    Environmental Sealingnot weather sealedWeathersealed body
    Battery Type DMW-BLG10 NP-FM500H
    Battery Life (CIPA)290 shots per charge880 shots per charge
    In-Camera Charging USB charging no USB charging
    Body Dimensions 122 x 71 x 44 mm
    (4.8 x 2.8 x 1.7 in)
    156 x 117 x 82 mm
    (6.1 x 4.6 x 3.2 in)
    Camera Weight 426 g (15.0 oz) 895 g (31.6 oz)
    Panasonic GX85:
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    Sony A850:
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