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Panasonic G100 vs GX850

The Panasonic Lumix DC-G100 (called Panasonic G110 in some regions) and the Panasonic Lumix DMC-GX850 (labelled Panasonic GX800 in some countries) are two digital cameras that were revealed to the public, respectively, in June 2020 and January 2017. Both the G100 and the GX850 are mirrorless interchangeable lens cameras that are equipped with a Four Thirds sensor. The G100 has a resolution of 20.2 megapixels, whereas the GX850 provides 15.8 MP.

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

Headline Specifications
Panasonic G100 versus Panasonic GX850
Panasonic G100 Panasonic GX850
Mirrorless system camera Mirrorless system camera
Micro Four Thirds lenses Micro Four Thirds lenses
20.2 MP, Four Thirds Sensor 15.8 MP, Four Thirds Sensor
4K/30p Video 4K/30p Video
ISO 200-25,600 ISO 200-25,600
Electronic viewfinder (3680k dots) No viewfinder, LCD framing
3.0 LCD, 1840k dots 3.0 LCD, 1040k dots
Swivel touchscreen Tilting touchscreen
10 shutter flaps per second 10 shutter flaps per second
270 shots per battery charge210 shots per battery charge
116 x 83 x 54 mm, 352 g 107 x 65 x 33 mm, 269 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Panasonic Lumix DC-G100 and the Panasonic Lumix DMC-GX850? 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 side-by-side display below illustrates the physical size and weight of the Panasonic G100 and the Panasonic GX850. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All width, height and depth measures are rounded to the nearest millimeter.

The GX850 can be obtained in three different colors (black, silver, red), while the G100 is only available in black.

Size Panasonic G100 vs Panasonic GX850
Compare G100 versus GX850 top
Comparison G100 or GX850 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Panasonic GX850 is notably smaller (28 percent) than the Panasonic G100. Moreover, the GX850 is markedly lighter (24 percent) than the G100. In this context, it is worth noting that neither the G100 nor the GX850 are weather-sealed.

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. In this particular case, both cameras feature the same lens mount, so that they can use the same lenses. You can compare the optics available in the Micro Four Thirds Lens Catalog. Mirrorless cameras, such as the two under consideration, have the additional advantage of having a short flange to focal plane distance, which makes it possible to mount many lenses from other systems onto the camera via adapters.

Concerning battery life, the G100 gets 270 shots out of its DMW-BLG10 battery, while the GX850 can take 210 images on a single charge of its DMW-BLH7 power pack. The power pack in the G100 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 G100 116 mm 83 mm 54 mm 352 g 270 n Jun 2020 649 i
2.
 
Panasonic GX850 107 mm 65 mm 33 mm 269 g 210 n Jan 2017 549 i
3.
 
Panasonic G95 130 mm 94 mm 77 mm 536 g 290 Y Apr 2019 999 i
4.
 
Panasonic G7 125 mm 86 mm 77 mm 410 g 350 n May 2015 649i
5.
 
Panasonic GF7 107 mm 65 mm 33 mm 266 g 230 n Jan 2015 499i
6.
 
Panasonic G6 122 mm 85 mm 71 mm 390 g 340 n Apr 2013 599i
7.
 
Panasonic G5 120 mm 83 mm 71 mm 396 g 320 n Jul 2012 599i
8.
 
Panasonic G3 115 mm 84 mm 47 mm 336 g 270 n May 2011 599i
9.
 
Panasonic GX1 116 mm 68 mm 39 mm 318 g 320 n Nov 2011 699i
10.
 
Panasonic G2 124 mm 84 mm 74 mm 428 g 360 n Mar 2010 599i
11.
 
Panasonic GF2 113 mm 68 mm 33 mm 310 g 300 n Nov 2010 549i
12.
 
Panasonic GF1 119 mm 71 mm 36 mm 385 g 380 n Sep 2009 749i
13.
 
Panasonic G1 124 mm 84 mm 45 mm 360 g 410 n Sep 2008 599i
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 listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The GX850 was launched at a somewhat lower price (by 15 percent) than the G100, which makes it more attractive for photographers on a tight budget. Usually, retail prices stay at first close to the launch price, but after several months, discounts become available. Later in the product cycle and, in particular, when the replacement model is about to appear, further discounting and stock clearance sales often push the camera price considerably down.

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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. 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 are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.

Both cameras under consideration feature a Four Thirds sensor and have a format factor (sometimes also referred to as "crop factor") of 2.0. Within the spectrum of camera sensors, this places the review cameras among the medium-sized sensor cameras that aim to strike a balance between image quality and portability. Both cameras feature a native aspect ratio (sensor width to sensor height) of 4:3.

Panasonic G100 and Panasonic GX850 sensor measures

While the two cameras under review share the same sensor size, the G100 offers a higher resolution of 20.2 megapixels, compared with 15.8 MP of the GX850. This megapixels advantage translates into a 13 percent gain in linear resolution. On the other hand, these sensor specs imply that the G100 has a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 3.34μm versus 3.77μm for the GX850). In this context, it should be noted, however, that the G100 is much more recent (by 3 years and 5 months) than the GX850, and its sensor will have benefitted from technological advances during this time that compensate for the smaller pixel size. Coming back to sensor resolution, it should be mentioned that neither of the two cameras has an anti-alias filter installed, so they are able to capture all the detail the sensor resolves.

The resolution advantage of the Panasonic G100 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the G100 for good quality output (200 dots per inch) amounts to 25.9 x 19.4 inches or 65.8 x 49.4 cm, for very good quality (250 dpi) 20.7 x 15.6 inches or 52.7 x 39.5 cm, and for excellent quality (300 dpi) 17.3 x 13 inches or 43.9 x 32.9 cm. The corresponding values for the Panasonic GX850 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 DC-G100 has a native sensitivity range from ISO 200 to ISO 25600, which can be extended to ISO 100-25600. The Panasonic Lumix DMC-GX850 offers exactly the same ISO settings.

G100 versus GX850 MP

For many cameras, data on sensor performance has been reported by DXO Mark. This service determines an overall sensor rating, as well as sub-scores for low-light sensitivity ("DXO Sports"), dynamic range ("DXO Landscape"), and color depth ("DXO Portrait"). The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-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 G100 Four Thirds 20.2 5184 38884K/30p........
2.
 
Panasonic GX850 Four Thirds 15.8 4592 34484K/30p23.213.358673
3.
 
Panasonic G95 Four Thirds 20.2 5184 38884K/30p........
4.
 
Panasonic G7 Four Thirds 15.8 4592 34484K/30p........
5.
 
Panasonic GF7 Four Thirds 15.8 4592 34481080/60p........
6.
 
Panasonic G6 Four Thirds 15.9 4608 34561080/60p21.311.563961
7.
 
Panasonic G5 Four Thirds 15.9 4608 34561080/60p........
8.
 
Panasonic G3 Four Thirds 15.8 4592 34481080/60i21.010.666756
9.
 
Panasonic GX1 Four Thirds 15.8 4592 34481080/60p20.810.670355
10.
 
Panasonic G2 Four Thirds 12.0 4000 3000720/30p21.210.349353
11.
 
Panasonic GF2 Four Thirds 12.0 4000 30001080/60i21.210.350654
12.
 
Panasonic GF1 Four Thirds 12.0 4000 3000720/30p21.210.351354
13.
 
Panasonic G1 Four Thirds 12.0 4000 3000none21.110.346353

Many modern cameras are not only capable of taking still images, but can also record movies. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, and both provide the same movie specifications (4K/30p).

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Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. For example, the G100 has an electronic viewfinder (3680k dots), which can be very helpful when shooting in bright sunlight. In contrast, the GX850 relies on live view and the rear LCD for framing. The following table reports on some other key feature differences and similarities of the Panasonic G100, the Panasonic GX850, and comparable cameras.

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Core Features
    Camera
Model
Viewfinder
(Type or
000 dots)
Control
Panel
(yes/no)
LCD
Size
(inch)
LCD
Resolution
(000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Mech
Shutter
Speed
Shutter
Flaps
(1/sec)
Built-in
Flash
(yes/no)
Built-in
Image
Stab
1.
 
Panasonic G1003680 n 3.0 1840 swivel Y 1/500s 10.0 Y n
2.
 
Panasonic GX850none n 3.0 1040 tilting Y 1/500s 10.0 Y n
3.
 
Panasonic G952360 n 3.0 1240 swivel Y 1/4000s 9.0 Y Y
4.
 
Panasonic G72360 n 3.0 1040 swivel Y 1/4000s 7.0 Y n
5.
 
Panasonic GF7none n 3.0 1040 tilting Y 1/500s 5.8 Y n
6.
 
Panasonic G61440 n 3.0 1036 swivel Y 1/4000s 7.0 Y n
7.
 
Panasonic G51440 n 3.0 920 swivel Y 1/4000s 6.0 Y n
8.
 
Panasonic G31440 n 3.0 460 swivel Y 1/4000s 4.0 Y n
9.
 
Panasonic GX1optional n 3.0 460 fixed Y 1/4000s 4.2 Y n
10.
 
Panasonic G21440 n 3.0 460 swivel Y 1/4000s 2.6 Y n
11.
 
Panasonic GF2optional n 3.0 460 fixed Y 1/4000s 2.6 Y n
12.
 
Panasonic GF1optional n 3.0 460 fixed n 1/4000s 3.0 Y n
13.
 
Panasonic G11440 n 3.0 460 swivel n 1/4000s 3.0 Y n
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, both cameras under consideration feature an 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 G100 and the Panasonic GX850 both have 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.

Concerning the storage of imaging data, both the G100 and the GX850 write their files to SDXC cards. Both cameras can use UHS-I cards, which provide for Ultra High Speed data transfer of up to 104 MB/s.

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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 DC-G100 and Panasonic Lumix DMC-GX850 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
Microphone
Internal
Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Panasonic G100YstereomonoYYmicro2.0Y-Y
2.
 
Panasonic GX850-stereomono--micro2.0Y--
3.
 
Panasonic G95YstereomonoYYmicro2.0Y-Y
4.
 
Panasonic G7YstereomonoY-micro2.0Y--
5.
 
Panasonic GF7-stereomono--micro2.0YY-
6.
 
Panasonic G6YstereomonoY-mini2.0YY-
7.
 
Panasonic G5Ystereomono--mini2.0---
8.
 
Panasonic G3Ystereomono--mini2.0---
9.
 
Panasonic GX1Ystereomono--mini2.0---
10.
 
Panasonic G2Ystereomono--mini2.0---
11.
 
Panasonic GF2Ystereomono--mini2.0---
12.
 
Panasonic GF1Ymonomono--mini2.0---
13.
 
Panasonic G1Y----mini2.0---

It is notable that the G100 has a hotshoe, while the GX850 does not. This socket makes it possible to easily attach optional accessories, such as an external flash gun.

Both the G100 and the GX850 are recent models that are part of the current product line-up. The GX850 replaced the earlier Panasonic GF7, while the G100 followed on from the Panasonic G95. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Panasonic website.

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Review summary

So what conclusions can be drawn? Is there a clear favorite between the Panasonic G100 and the Panasonic GX850? Which camera is better? A synthesis of the relative strong points of each of the models is listed below.


Arguments in favor of the Panasonic Lumix DC-G100:

  • More detail: Offers more megapixels (20.2 vs 15.8MP) with a 13% higher linear resolution.
  • Better sound: Can connect to an external microphone for higher quality sound recording.
  • Better sound control: Has a headphone port that enables audio monitoring while recording.
  • Easier framing: Has an electronic viewfinder for image composition and settings control.
  • More detailed LCD: Has a higher resolution rear screen (1840k vs 1040k dots).
  • More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
  • Longer lasting: Can take more shots (270 versus 210) on a single battery charge.
  • Easier travel charging: Can be conveniently charged via its USB port.
  • Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
  • Easier wireless transfer: Supports Bluetooth for image sharing without cables.
  • More modern: Reflects 3 years and 5 months of technical progress since the GX850 launch.


Reasons to prefer the Panasonic Lumix DMC-GX850:

  • More compact: Is smaller (107x65mm vs 116x83mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 83g or 24 percent) and is thus easier to take along.
  • More affordable: Was released into a lower priced segment (15 percent cheaper at launch).
  • More heavily discounted: Has been around for much longer (launched in January 2017).

If the number of relative strengths (bullet points above) is taken as a guide, the G100 is the clear winner of the match-up (11 : 4 points). However, the pertinence of the various camera strengths will differ across photographers, so that you might want to weigh individual camera traits according to their importance for your own imaging needs before making a camera decision. A professional sports photographer will view the differences between cameras in a way that diverges from the perspective of a street photog, and a person interested in family portraits has distinct needs from a landscape shooter. Hence, the decision which camera is best and worth buying is often a very personal one.

G100 11:04 GX850

How about other alternatives? Do the specifications of the Panasonic G100 and the Panasonic GX850 place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens 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 G100 or the GX850. 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 where reviews by experts come in. The following table reports the overall ratings of the cameras as published by some of the major camera review sites (amateurphotographer [AP], cameralabs [CL], 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 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Panasonic G100......4/54/5 Jun 2020 649 i
2.
 
Panasonic GX850..+76/1004.5/54.5/5 Jan 2017 549 i
3.
 
Panasonic G954.5/5+83/1004.5/54.5/5 Apr 2019 999 i
4.
 
Panasonic G74/5+ +80/1005/54.5/5 May 2015 649i
5.
 
Panasonic GF74/5+..4.5/54.5/5 Jan 2015 499i
6.
 
Panasonic G64/5+ +..5/54.5/5 Apr 2013 599i
7.
 
Panasonic G53/5+ +..4.5/54.5/5 Jul 2012 599i
8.
 
Panasonic G33/5+ +75/1004.5/55/5 May 2011 599i
9.
 
Panasonic GX13/5+77/1004.5/54.5/5 Nov 2011 699i
10.
 
Panasonic G2....72/1004/54.5/5 Mar 2010 599i
11.
 
Panasonic GF23/582/10070/1004.5/54.5/5 Nov 2010 549i
12.
 
Panasonic GF1..85/10069/1004.5/54.5/5 Sep 2009 749i
13.
 
Panasonic G1..+ +70/1004/54.5/5 Sep 2008 599i
Notes: (+ +) 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. Hence, a score should always be seen in the context of the camera's market launch date and its price, 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.

Panasonic G100:
Check Amazon price
Panasonic GX850:
Check Amazon price

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 make a corresponding selection in the search boxes below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.

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    Specifications: Panasonic G100 vs Panasonic GX850

    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 G100 Panasonic GX850
    Camera Type Mirrorless system camera Mirrorless system camera
    Camera Lens Micro Four Thirds lenses Micro Four Thirds lenses
    Launch Date June 2020 January 2017
    Launch Price USD 649 USD 549
    Sensor Specs Panasonic G100 Panasonic GX850
    Sensor Technology Live MOS CMOS
    Sensor Format Four Thirds Sensor Four Thirds Sensor
    Sensor Size 17.3 x 13.0 mm 17.3 x 13.0 mm
    Sensor Area 224.9 mm2 224.9 mm2
    Sensor Diagonal 21.6 mm 21.6 mm
    Crop Factor 2.0x 2.0x
    Sensor Resolution 20.2 Megapixels 15.8 Megapixels
    Image Resolution 5184 x 3888 pixels 4592 x 3448 pixels
    Pixel Pitch 3.34 μm 3.77 μm
    Pixel Density 8.96 MP/cm2 7.04 MP/cm2
    Moiré control no AA filter no AA filter
    Movie Capability 4K/30p Video 4K/30p Video
    ISO Setting 200 - 25,600 ISO 200 - 25,600 ISO
    ISO Boost 100 - 25,600 ISO 100 - 25,600 ISO
    Image Processor Venus Venus
    DXO Sensor Quality (score) .. 73
    DXO Color Depth (bits) .. 23.2
    DXO Dynamic Range (EV) .. 13.3
    DXO Low Light (ISO) .. 586
    Screen Specs Panasonic G100 Panasonic GX850
    Viewfinder Type Electronic viewfinder no viewfinder
    Viewfinder Field of View 100%
    Viewfinder Magnification 0.73x
    Viewfinder Resolution 3680k dots
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.0inch
    LCD Resolution 1840k dots 1040k dots
    LCD Attachment Swivel screen Tilting screen
    Touch Input Touchscreen Touchscreen
    Shooting Specs Panasonic G100 Panasonic GX850
    Focus System Contrast-detect AF Contrast-detect AF
    Manual Focusing AidFocus PeakingFocus Peaking
    Max Shutter Speed (mechanical) 1/500s 1/500s
    Continuous Shooting 10 shutter flaps/s 10 shutter flaps/s
    Electronic Shutterup to 1/16000sup to 1/16000s
    Time-Lapse PhotographyIntervalometer built-inIntervalometer built-in
    Fill Flash Build-in Flash Build-in Flash
    Storage Medium SDXC cards SDXC cards
    Second Storage Option Single card slot Single card slot
    UHS card support UHS-I UHS-I
    Connectivity Specs Panasonic G100 Panasonic GX850
    External Flash Hotshoe no Hotshoe
    USB Connector USB 2.0 USB 2.0
    HDMI Port micro HDMI micro HDMI
    Microphone Port External MIC port no MIC socket
    Headphone Socket Headphone port no Headphone port
    Wifi Support Wifi built-in Wifi built-in
    Bluetooth Support Bluetooth built-in no Bluetooth
    Body Specs Panasonic G100 Panasonic GX850
    Battery Type DMW-BLG10 DMW-BLH7
    Battery Life (CIPA)270 shots per charge210 shots per charge
    In-Camera Charging USB charging no USB charging
    Body Dimensions 116 x 83 x 54 mm
    (4.6 x 3.3 x 2.1 in)
    107 x 65 x 33 mm
    (4.2 x 2.6 x 1.3 in)
    Camera Weight 352 g (12.4 oz) 269 g (9.5 oz)

    Did you notice an error on this page? If so, please get in touch, so that we can correct the information.

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