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Panasonic GX9 vs Sigma fp

The Panasonic Lumix DC-GX9 and the Sigma fp are two digital cameras that were announced, respectively, in February 2018 and July 2019. Both the GX9 and the fp are mirrorless interchangeable lens cameras that are based on a Four Thirds (GX9) and a full frame (fp) sensor. The Panasonic has a resolution of 20.2 megapixels, whereas the Sigma provides 24 MP.

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

Headline Specifications
Panasonic GX9
versus
Sigma fp
Panasonic GX9   Sigma fp
Mirrorless system camera Mirrorless system camera
Micro Four Thirds lenses Leica L mount lenses
20.2 MP – Four Thirds sensor 24 MP – Full Frame sensor
4K/30p Video 4K/30p Video
ISO 200-25,600 ISO 100-25,600 (6 - 102,400)
Electronic viewfinder (2760k dots) Viewfinder optional
3.0" LCD – 1240k dots 3.2" LCD – 2100k dots
Tilting touchscreen Fixed touchscreen
9 shutter flaps per second 12 shutter flaps per second
In-body stabilizationLens stabilization only
not weather sealedWeathersealed body
260 shots per battery charge280 shots per battery charge
124 x 72 x 47 mm, 407 g 113 x 70 x 45 mm, 422 g
logo
Check GX9 offers at
ebay.com
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Check fp price at
amazon.com

Going beyond this snapshot of core features and characteristics, what are the differences between the Panasonic Lumix DC-GX9 and the Sigma fp? 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.

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Body comparison

The physical size and weight of the Panasonic GX9 and the Sigma fp 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 size dimensions are rounded to the nearest millimeter.

The GX9 can be obtained in two different colors (black, silver), while the fp is only available in black.

Size Panasonic GX9 vs Sigma fp
Compare GX9 versus fp top
Comparison GX9 or fp rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sigma fp is notably smaller (11 percent) than the Panasonic GX9. However, the fp is slightly heavier (4 percent) than the GX9. It is noteworthy in this context that the fp is splash and dust-proof, while the GX9 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 GX9 gets 260 shots out of its Panasonic DMW-BLG10 battery, while the fp can take 280 images on a single charge of its Sigma BP-51 power pack. The battery packs of both cameras can be charged via USB, which can be very convenient when travelling.

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.

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Body Specifications
  empty Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price
Street
Price
1.
 
Panasonic GX9 124 mm 72 mm 47 mm 407 g 260 i Feb 2018 US$ 849ebay.com
2.
 
Sigma fp 113 mm 70 mm 45 mm 422 g 280 i Jul 2019 US$ 1 899 amazon.com
3.
 
Fujifilm X-Pro3 141 mm 83 mm 46 mm 497 g 440 i Oct 2019 US$ 1 799 amazon.com
4.
 
Nikon D780 144 mm 116 mm 76 mm 840 g 2260 i Jan 2020 US$ 2 299 amazon.com
5.
 
Olympus E-M10 II 120 mm 83 mm 47 mm 390 g 320 i Aug 2015 US$ 649ebay.com
6.
 
Olympus E-M10 IV 122 mm 84 mm 49 mm 383 g 360 i Aug 2020 US$ 699 amazon.com
7.
 
Olympus E-P7 118 mm 69 mm 38 mm 337 g 360 i Jun 2021 US$ 799 amazon.com
8.
 
Panasonic G97 130 mm 94 mm 77 mm 536 g 290 i Apr 2019 US$ 749ebay.com
9.
 
Panasonic G95 130 mm 94 mm 77 mm 536 g 290 i Apr 2019 US$ 999ebay.com
10.
 
Panasonic GX7 123 mm 71 mm 55 mm 402 g 350 i Aug 2013 US$ 999ebay.com
11.
 
Panasonic GX8 133 mm 78 mm 63 mm 487 g 330 i Jul 2015 US$ 1 199ebay.com
12.
 
Panasonic GX85 122 mm 71 mm 44 mm 426 g 290 i Apr 2016 US$ 799 amazon.com
13.
 
Panasonic LX100 II 115 mm 66 mm 65 mm 392 g 300 i Aug 2018 US$ 999ebay.com
14.
 
Panasonic S1 149 mm 110 mm 97 mm 1017 g 400 i Feb 2019 US$ 2 499ebay.com
15.
 
Panasonic S1H 151 mm 114 mm 110 mm 1052 g 400 i May 2019 US$ 3 999 amazon.com
16.
 
Panasonic S5 133 mm 98 mm 82 mm 714 g 440 i Sep 2020 US$ 1 999 amazon.com
17.
 
Panasonic ZS200 111 mm 65 mm 45 mm 340 g 370 i Feb 2018 US$ 799 amazon.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
  empty Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price
Street
Price
  empty Camera
Model

Any camera decision will naturally be influenced heavily by the price. 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 GX9 was launched at a markedly lower price (by 55 percent) than the fp, 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 imaging sensor is at the core of digital cameras and its size is one of the main determining factors 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 more expensive and lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Panasonic GX9 features a Four Thirds sensor and the Sigma fp a full frame sensor. The sensor area in the fp is 281 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 GX9 has a native 4:3 aspect ratio, while the one in the fp offers a 3:2 aspect.

Panasonic GX9 and Sigma fp sensor measures

With 24MP, the fp offers a higher resolution than the GX9 (20.2MP), but the fp nevertheless has larger individual pixels (pixel pitch of 5.98μm versus 3.34μm for the GX9) due to its larger sensor. Moreover, the fp is a somewhat more recent model (by 1 year and 4 months) than the GX9, and its sensor might have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixel-units. 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 Sigma fp implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the fp 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 Panasonic GX9 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 Panasonic Lumix DC-GX9 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 Sigma fp are ISO 100 to ISO 25600, with the possibility to increase the ISO range to 6-102400.

In terms of underlying technology, the GX9 is build around a CMOS sensor, while the fp uses a BSI-CMOS imager. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.

GX9 versus fp MP

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. 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
  empty Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Panasonic GX9 Four Thirds 20.2 5184 38884K/30p23.112.8116374
2.
 
Sigma fp Full Frame 24.0 6000 40004K/30p25.214.2282994
3.
 
Fujifilm X-Pro3 APS-C 26.0 6240 41604K/30p24.113.6196884
4.
 
Nikon D780 Full Frame 24.3 6048 40244K/30p25.314.3287795
5.
 
Olympus E-M10 II Four Thirds 15.9 4608 34561080/60p23.112.584273
6.
 
Olympus E-M10 IV Four Thirds 20.2 5184 38884K/30p23.313.2140276
7.
 
Olympus E-P7 Four Thirds 20.2 5184 38884K/30p23.413.3149477
8.
 
Panasonic G97 Four Thirds 20.2 5184 38884K/30p23.213.0127375
9.
 
Panasonic G95 Four Thirds 20.2 5184 38884K/30p23.213.0127375
10.
 
Panasonic GX7 Four Thirds 15.8 4592 34481080/60p22.612.271870
11.
 
Panasonic GX8 Four Thirds 20.2 5184 38884K/30p23.512.680675
12.
 
Panasonic GX85 Four Thirds 15.8 4592 34484K/30p22.912.666271
13.
 
Panasonic LX100 II Four Thirds 16.8 4736 35524K/30p22.812.797972
14.
 
Panasonic S1 Full Frame 24.0 6000 40004K/60p25.214.5333395
15.
 
Panasonic S1H Full Frame 24.0 6000 40006K/30p25.214.2280594
16.
 
Panasonic S5 Full Frame 24.0 6000 40004K/60p25.114.5269794
17.
 
Panasonic ZS200 1-inch 20.0 5472 36484K/30p22.012.244964
Note: DXO values in italics represent estimates based on sensor size and age.
  empty Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
  empty Camera
Model

Many modern cameras are not only capable of taking still images, but also of capturing video footage. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, and both provide the same movie specifications (4K/30p).

Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. For example, the GX9 has an electronic viewfinder (2760k dots), which can be very helpful when shooting in bright sunlight. In contrast, the fp relies on live view and the rear LCD for framing. That said, the fp can be equipped with an optional viewfinder – the EVF-11. The table below summarizes some of the other core capabilities of the Panasonic GX9 and Sigma fp in connection with corresponding information for a sample of similar cameras.

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Core Features
  empty 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 GX92760 i3.0 / 1240 tilting i 1/4000s 9.0/s i i
2.
 
Sigma fpoptional i3.2 / 2100 fixed i 1/8000s 12.0/s i i
3.
 
Fujifilm X-Pro33690 i3.0 / 1620 tilting i 1/8000s 8.0/s i i
4.
 
Nikon D780optical i3.2 / 2359 tilting i 1/8000s 12.0/s i i
5.
 
Olympus E-M10 II2360 i3.0 / 1040 tilting i 1/4000s 8.0/s i i
6.
 
Olympus E-M10 IV2360 i3.0 / 1040 tilting i 1/4000s 15.0/s i i
7.
 
Olympus E-P7i i3.0 / 1040 tilting i 1/4000s 8.7/s i i
8.
 
Panasonic G972360 i3.0 / 1840 swivel i 1/4000s 9.0/s i i
9.
 
Panasonic G952360 i3.0 / 1240 swivel i 1/4000s 9.0/s i i
10.
 
Panasonic GX72760 i3.0 / 1040 tilting i 1/8000s 5.0/s i i
11.
 
Panasonic GX82360 i3.0 / 1040 swivel i 1/8000s 10.0/s i i
12.
 
Panasonic GX852765 i3.0 / 1040 tilting i 1/4000s 8.0/s i i
13.
 
Panasonic LX100 II2764 i3.0 / 1240 fixed i 1/4000s 11.0/s i i
14.
 
Panasonic S15760 i3.2 / 2100 full-flex i 1/8000s 9.0/s i i
15.
 
Panasonic S1H5760 i3.2 / 2330 swivel i 1/8000s 9.0/s i i
16.
 
Panasonic S52360 i3.0 / 1840 swivel i 1/8000s 7.0/s i i
17.
 
Panasonic ZS2002330 i3.0 / 1240 fixed i 1/2000s 10.0/s i i
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.
  empty 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
  empty Camera
Model

One difference between the cameras concerns the presence of an on-board flash. The GX9 has one, while the fp does not. While the built-in flash of the GX9 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, 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 GX9 and the Sigma fp 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 GX9 and the fp write their files to SDXC cards. The fp supports UHS-II cards (Ultra High Speed data transfer of up to 312 MB/s), while the GX9 can use UHS-I cards (up to 104 MB/s).

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-GX9 and Sigma fp and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
  empty Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Panasonic GX9istereo / monoiimicro2.0iii
2.
 
Sigma fpistereo / monoiimicro3.1iii
3.
 
Fujifilm X-Pro3istereo / monoiii3.1iii
4.
 
Nikon D780istereo / monoiimini3.1iii
5.
 
Olympus E-M10 IIistereo / monoiimicro2.0iii
6.
 
Olympus E-M10 IVistereo / monoiimicro2.0iii
7.
 
Olympus E-P7istereo / monoiimicro2.0iii
8.
 
Panasonic G97istereo / monoiimicro2.0iii
9.
 
Panasonic G95istereo / monoiimicro2.0iii
10.
 
Panasonic GX7istereo / monoiimini2.0iii
11.
 
Panasonic GX8istereo / monoiimicro2.0iii
12.
 
Panasonic GX85istereo / monoiimicro2.0iii
13.
 
Panasonic LX100 IIistereo / monoiimicro2.0iii
14.
 
Panasonic S1istereo / monoiifull3.1iii
15.
 
Panasonic S1Histereo / monoiifull3.1iii
16.
 
Panasonic S5istereo / monoiimicro3.2iii
17.
 
Panasonic ZS200istereo / monoiimicro2.0iii
  empty Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
  empty Camera
Model

It is notable that the GX9 offers wifi support, while the fp does not. Wifi can be a very convenient means to transfer image data to an off-camera location.

The fp is a recent model that features in the current product line-up of Sigma. In contrast, the GX9 has been discontinued (but can be found pre-owned on ebay). There has not been a direct replacement model for the GX9 from Panasonic. Further information on the features and operation of the GX9 and fp can be found, respectively, in the Panasonic GX9 Manual (free pdf) or the online Sigma fp Manual.

Review summary

So what is the bottom line? Which of the two cameras – the Panasonic GX9 or the Sigma fp – has the upper hand? Is one clearly better than the other? Below is a summary of the relative strengths of each of the two contestants.

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Advantages of the Panasonic Lumix DC-GX9:

  • Easier framing: Has an electronic viewfinder for image composition and settings control.
  • More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
  • Sharper images: Has hand-shake reducing image stabilization built-in.
  • 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.
  • Easier wireless transfer: Supports Bluetooth for image sharing without cables.
  • More affordable: Was introduced into a lower priced category (55 percent cheaper at launch).
  • More heavily discounted: Has been on the market for longer (launched in February 2018).

ilogo

Reasons to prefer the Sigma fp:

  • More detail: Has more megapixels (24 vs 20.2MP), which boosts linear resolution by 11%.
  • Better image quality: Is equipped with a larger and more technologically advanced sensor.
  • Richer colors: The sensor size advantage translates into images with better, more accurate colors.
  • More dynamic range: Larger sensor captures a wider spectrum of light and dark details.
  • Better low-light sensitivity: Larger sensor produces good images even in poorly lit environments.
  • Better sound: Can connect to an external microphone for higher quality sound recording.
  • Larger screen: Has a bigger rear LCD (3.2" vs 3.0") for image review and settings control.
  • More detailed LCD: Has a higher resolution rear screen (2100k vs 1240k dots).
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • Faster burst: Shoots at higher frequency (12 vs 9 flaps/sec) to capture the decisive moment.
  • More compact: Is smaller (113x70mm vs 124x72mm) and will fit more readily into a bag.
  • Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
  • Faster data transfer: Supports a more advanced USB protocol (3.1 vs 2.0).
  • Faster buffer clearing: Supports a more advanced SD data transfer standard (UHS-II vs UHS-I).
  • More modern: Was introduced somewhat (1 year and 4 months) more recently.

If the count of individual advantages (bullet points above) is taken as a guide, the fp is the clear winner of the contest (15 : 8 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 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.

GX9 08:15 fp

How about other alternatives? Do the specifications of the Panasonic GX9 and the Sigma fp 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 technical specifications can provide a useful overview of the capabilities of different cameras, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the GX9 or the fp. 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 following table reports the overall ratings of the cameras as published by some of the major 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.

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Expert Camera Reviews
  empty  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price
Street
Price
1.
 
Panasonic GX94/5+4/584/1004.5/54.5/5 Feb 2018 US$ 849ebay.com
2.
 
Sigma fp4/5..4/5..4/54.5/5 Jul 2019 US$ 1 899 amazon.com
3.
 
Fujifilm X-Pro34/5+4/585/1004/5.. Oct 2019 US$ 1 799 amazon.com
4.
 
Nikon D7805/5..5/587/1004.5/54.5/5 Jan 2020 US$ 2 299 amazon.com
5.
 
Olympus E-M10 II4.5/5+ +..80/1005/55/5 Aug 2015 US$ 649ebay.com
6.
 
Olympus E-M10 IV4.5/5..5/581/1004.5/54.5/5 Aug 2020 US$ 699 amazon.com
7.
 
Olympus E-P74/5..4.5/5....4.5/5 Jun 2021 US$ 799 amazon.com
8.
 
Panasonic G97............ Apr 2019 US$ 749ebay.com
9.
 
Panasonic G954.5/5+4.5/583/1004.5/54.5/5 Apr 2019 US$ 999ebay.com
10.
 
Panasonic GX74/5+..79/1005/55/5 Aug 2013 US$ 999ebay.com
11.
 
Panasonic GX85/5+..82/1004.5/54.5/5 Jul 2015 US$ 1 199ebay.com
12.
 
Panasonic GX854.5/5+ +..82/1005/55/5 Apr 2016 US$ 799 amazon.com
13.
 
Panasonic LX100 II4.5/5+4.2/582/1004.5/54.5/5 Aug 2018 US$ 999ebay.com
14.
 
Panasonic S14.5/5+ +4.5/588/1004.5/54/5 Feb 2019 US$ 2 499ebay.com
15.
 
Panasonic S1H....4/590/100.... May 2019 US$ 3 999 amazon.com
16.
 
Panasonic S54.5/5+ +4.5/588/1004.5/54.5/5 Sep 2020 US$ 1 999 amazon.com
17.
 
Panasonic ZS200..+ +4.5/581/1004.5/54.5/5 Feb 2018 US$ 799 amazon.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.
  empty  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price
Street
Price
  empty  Camera 
 Model 

The above review scores should be interpreted with care, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. Hence, a score should always be seen in the context of the camera's market launch date and its price, and comparisons of ratings among very different cameras or across long time periods have little meaning. Also, please note that some of the review sites have changed their methodology and reporting over time.

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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 a corresponding selection in the search boxes 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 GX9 vs Sigma fp

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 GX9 Sigma fp
Camera Type Mirrorless system camera Mirrorless system camera
Camera Lens Micro Four Thirds lenses Leica L mount lenses
Launch Date February 2018 July 2019
Launch Price USD 849 USD 1,899
Sensor Specs Panasonic GX9 Sigma fp
Sensor Technology CMOS BSI-CMOS
Sensor Format Four Thirds Sensor Full Frame Sensor
Sensor Size 17.3 x 13.0 mm 35.9 x 23.9 mm
Sensor Area 224.9 mm2 858.01 mm2
Sensor Diagonal 21.6 mm 43.1 mm
Crop Factor 2.0x 1.0x
Sensor Resolution 20.2 Megapixels 24 Megapixels
Image Resolution 5184 x 3888 pixels 6000 x 4000 pixels
Pixel Pitch 3.34 μm 5.98 μm
Pixel Density 8.96 MP/cm2 2.80 MP/cm2
Moiré control no AA filter no AA filter
Movie Capability 4K/30p Video 4K/30p Video
ISO Setting 200 - 25,600 ISO 100 - 25,600 ISO
ISO Boost 100 - 25,600 ISO 6 - 102,400 ISO
Screen Specs Panasonic GX9 Sigma fp
Viewfinder Type Electronic viewfinder Viewfinder optional
Viewfinder Field of View 100%
Viewfinder Magnification 0.70x
Viewfinder Resolution 2760k dots
LCD Framing Live View Live View
Rear LCD Size 3.0inch 3.2inch
LCD Resolution 1240k dots 2100k dots
LCD Attachment Tilting screen Fixed screen
Touch Input Touchscreen Touchscreen
Shooting Specs Panasonic GX9 Sigma fp
Focus System Contrast-detect AF Contrast-detect AF
Manual Focusing AidFocus PeakingFocus Peaking
Max Shutter Speed (mechanical) 1/4000s 1/8000s
Continuous Shooting 9 shutter flaps/s 12 shutter flaps/s
Electronic Shutterup to 1/16000sup to 1/8000s
Time-Lapse PhotographyIntervalometer built-inIntervalometer built-in
Image StabilizationIn-body stabilizationLens stabilization only
Fill Flash Built-in Flash no On-Board Flash
Storage Medium SDXC cards SDXC cards
Single or Dual Card Slots Single card slot Single card slot
UHS card support UHS-I UHS-II
Connectivity Specs Panasonic GX9 Sigma fp
External Flash Hotshoe Hotshoe
USB Connector USB 2.0 USB 3.1
HDMI Port micro HDMI micro HDMI
Microphone Port no MIC socket External MIC port
Wifi Support Wifi built-in no Wifi
Bluetooth Support Bluetooth built-in no Bluetooth
Body Specs Panasonic GX9 Sigma fp
Environmental Sealingnot weather sealedWeathersealed body
Battery Type Panasonic DMW-BLG10 Sigma BP-51
Battery Life (CIPA)260 shots per charge280 shots per charge
In-Camera Charging USB charging USB charging
Body Dimensions 124 x 72 x 47 mm
(4.9 x 2.8 x 1.9 in)
113 x 70 x 45 mm
(4.4 x 2.8 x 1.8 in)
Camera Weight 407 g (14.4 oz) 422 g (14.9 oz)
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