Fujifilm X100S vs Panasonic GX85

The Fujifilm X100S and the Panasonic Lumix DMC-GX85 (labelled Panasonic GX80 in some countries) are two digital cameras that were revealed to the public, respectively, in January 2013 and April 2016. The X100S is a fixed lens compact, while the GX85 is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (X100S) and a Four Thirds (GX85) sensor. The Fujifilm has a resolution of 16 megapixels, whereas the Panasonic 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

Fujifilm X100S		Panasonic GX85
Fixed lens compact camera		Mirrorless system camera
35mm f/2.0		Micro Four Thirds lenses
16 MP – APS-C sensor		15.8 MP – Four Thirds sensor
1080/60p Video		4K/30p Video
ISO 200-6,400 (100 - 25,600)		ISO 200-25,600
Electronic viewfinder (2360k dots)		Electronic viewfinder (2765k dots)
2.8" LCD – 460k dots		3.0" LCD – 1040k dots
Fixed screen (not touch-sensitive)		Tilting touchscreen
6 shutter flaps per second		8 shutter flaps per second
no shake reduction		In-body stabilization
330 shots per battery charge		290 shots per battery charge
127 x 74 x 54 mm, 445 g		122 x 71 x 44 mm, 426 g

Check X100S offers at
ebay.com
Check GX85 price at
amazon.com

Going beyond this snapshot of core features and characteristics, what are the differences between the Fujifilm X100S and the Panasonic Lumix DMC-GX85? 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 Fujifilm X100S and the Panasonic GX85 are illustrated in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive perspectives from the front, the top, and the back are available. All width, height and depth measures are rounded to the nearest millimeter.

Both cameras are available in two different colors (black, silver).

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Panasonic GX85 is notably smaller (8 percent) than the Fujifilm X100S. In this context, it is worth noting that neither the X100S nor the GX85 are weather-sealed.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the X100S has a lens built in, whereas the GX85 is an interchangeable lens camera that requires a separate lens. Attaching the latter will add extra weight and bulk to the setup. You can compare the optics available for the GX85 and their specifications in the Micro Four Thirds Lens Catalog.

Concerning battery life, the X100S gets 330 shots out of its Fujifilm NP-95 battery, while the GX85 can take 290 images on a single charge of its Panasonic DMW-BLG10 power pack. The power pack in the GX85 can be charged via the USB port, 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.

Body Specifications

		Camera Model	Camera Width	Camera Height	Camera Depth	Camera Weight	Battery Life	Weather Sealing	Camera Launch	Launch Price	Street Price
1.		Fujifilm X100S	127 mm	74 mm	54 mm	445 g	330	n	Jan 2013	US$ 1 299	ebay.com
2.		Panasonic GX85	122 mm	71 mm	44 mm	426 g	290	n	Apr 2016	US$ 799	amazon.com
3.		Canon G1 X	117 mm	81 mm	65 mm	534 g	250	n	Jan 2012	US$ 799	ebay.com
4.		Fujifilm X-Pro1	140 mm	82 mm	43 mm	450 g	300	n	Jan 2012	US$ 1 699	ebay.com
5.		Fujifilm X-T1	129 mm	90 mm	47 mm	440 g	350	Y	Jan 2014	US$ 1 299	ebay.com
6.		Fujifilm X-T10	118 mm	83 mm	41 mm	381 g	350	n	May 2015	US$ 799	ebay.com
7.		Fujifilm X30	119 mm	72 mm	60 mm	423 g	470	n	Aug 2014	US$ 599	ebay.com
8.		Fujifilm X100	126 mm	75 mm	54 mm	445 g	300	n	Sep 2010	US$ 1 199	ebay.com
9.		Fujifilm X100T	127 mm	74 mm	52 mm	440 g	330	n	Sep 2014	US$ 1 299	ebay.com
10.		Fujifilm X100F	127 mm	75 mm	52 mm	469 g	390	n	Jan 2017	US$ 1 299	ebay.com
11.		Leica X Typ 113	133 mm	73 mm	78 mm	486 g	350	n	Sep 2014	US$ 2 299	ebay.com
12.		Nikon Coolpix A	111 mm	64 mm	40 mm	299 g	230	n	Mar 2013	US$ 1 099	ebay.com
13.		Olympus E-M10 II	120 mm	83 mm	47 mm	390 g	320	n	Aug 2015	US$ 649	ebay.com
14.		Panasonic G85	128 mm	89 mm	74 mm	505 g	330	Y	Sep 2016	US$ 899	ebay.com
15.		Panasonic GH2	124 mm	90 mm	76 mm	442 g	330	n	Sep 2010	US$ 899	ebay.com
16.		Panasonic GX7	123 mm	71 mm	55 mm	402 g	350	n	Aug 2013	US$ 999	ebay.com
17.		Panasonic GX9	124 mm	72 mm	47 mm	407 g	260	n	Feb 2018	US$ 849	ebay.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
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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. 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 imaging sensor is a crucial determinant 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 associated with larger, more expensive camera bodies and lenses.

Of the two cameras under consideration, the Fujifilm X100S features an APS-C sensor and the Panasonic GX85 a Four Thirds sensor. The sensor area in the GX85 is 39 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.5 and 2.0. The sensor in the X100S has a native 3:2 aspect ratio, while the one in the GX85 offers a 4:3 aspect.

With 16MP, the X100S offers a slightly higher resolution than the GX85 (15.8MP), but the X100S nevertheless has larger individual pixels (pixel pitch of 4.80μm versus 3.77μm for the GX85) due to its larger sensor. However, the GX85 is a much more recent model (by 3 years and 2 months) than the X100S, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixels. 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 X100S has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

The Fujifilm X100S has a native sensitivity range from ISO 200 to ISO 6400, which can be extended to ISO 100-25600. The corresponding ISO settings for the Panasonic Lumix DMC-GX85 are ISO 200 to ISO 25600, with the possibility to increase the ISO range to 100-25600.

Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors. The X100S uses Fujifilm's X-Trans layout of photosites, while the GX85 employs the more common Bayer array.

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. 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 following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

Sensor Characteristics

		Camera Model	Sensor Class	Resolution (MP)	Horiz. Pixels	Vert. Pixels	Video Format	DXO Portrait	DXO Landscape	DXO Sports	DXO Overall
1.		Fujifilm X100S	APS-C	16.0	4896	3264	1080/60p	23.3	12.5	1329	75
2.		Panasonic GX85	Four Thirds	15.8	4592	3448	4K/30p	22.9	12.6	662	71
3.		Canon G1 X	1.5-inch	14.2	4352	3264	1080/24p	21.7	10.8	644	60
4.		Fujifilm X-Pro1	APS-C	16.0	4896	3264	1080/24p	23.1	12.3	1238	74
5.		Fujifilm X-T1	APS-C	16.0	4896	3264	1080/60p	23.5	12.7	1426	77
6.		Fujifilm X-T10	APS-C	16.0	4896	3264	1080/60p	23.7	12.9	1546	79
7.		Fujifilm X30	2/3	12.0	4000	3000	1080/60p	20.4	11.2	-312	49
8.		Fujifilm X100	APS-C	12.2	4288	2848	720/30p	22.9	12.4	1001	73
9.		Fujifilm X100T	APS-C	16.0	4896	3264	1080/60p	23.6	12.8	1483	78
10.		Fujifilm X100F	APS-C	24.0	6000	4000	1080/60p	23.9	13.2	1704	81
11.		Leica X Typ 113	APS-C	16.1	4928	3264	1080/30p	23.6	12.8	1491	78
12.		Nikon Coolpix A	APS-C	16.1	4928	3264	1080/30p	23.4	13.8	1164	80
13.		Olympus E-M10 II	Four Thirds	15.9	4608	3456	1080/60p	23.1	12.5	842	73
14.		Panasonic G85	Four Thirds	15.8	4592	3448	4K/30p	22.8	12.5	656	71
15.		Panasonic GH2	Four Thirds	15.9	4608	3456	1080/60i	21.2	11.3	655	60
16.		Panasonic GX7	Four Thirds	15.8	4592	3448	1080/60p	22.6	12.2	718	70
17.		Panasonic GX9	Four Thirds	20.2	5184	3888	4K/30p	23.1	12.8	1163	74
Note: DXO values in italics represent estimates based on sensor size and age.

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, but the GX85 provides a better video resolution than the X100S. It can shoot movie footage at 4K/30p, while the Fujifilm 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 review are similar with respect to both having an electronic viewfinder. However, the one in the GX85 offers a higher resolution than the one in the X100S (2765k vs 2360k dots). The table below summarizes some of the other core capabilities of the Fujifilm X100S and Panasonic GX85 in connection with corresponding information for a sample of similar cameras.

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.		Fujifilm X100S	2360	n	2.8 / 460	fixed	n	1/4000s	6.0/s	Y	n
2.		Panasonic GX85	2765	n	3.0 / 1040	tilting	Y	1/4000s	8.0/s	Y	Y
3.		Canon G1 X	optical	n	3.0 / 922	swivel	n	1/4000s	1.9/s	Y	Y
4.		Fujifilm X-Pro1	1440	n	3.0 / 1230	fixed	n	1/4000s	6.0/s	n	n
5.		Fujifilm X-T1	2360	n	3.0 / 1040	tilting	n	1/4000s	8.0/s	n	n
6.		Fujifilm X-T10	2360	n	3.0 / 920	tilting	n	1/4000s	8.0/s	Y	n
7.		Fujifilm X30	2360	n	3.0 / 920	tilting	n	1/4000s	12.0/s	Y	Y
8.		Fujifilm X100	1440	n	2.8 / 460	fixed	n	1/4000s	5.0/s	Y	n
9.		Fujifilm X100T	2360	n	3.0 / 1040	fixed	n	1/4000s	6.0/s	Y	n
10.		Fujifilm X100F	2360	n	3.0 / 1040	fixed	n	1/4000s	8.0/s	Y	n
11.		Leica X Typ 113	optional	n	3.0 / 920	fixed	n	1/2000s	5.0/s	Y	n
12.		Nikon Coolpix A	optional	n	3.0 / 921	fixed	n	1/2000s	4.0/s	Y	n
13.		Olympus E-M10 II	2360	n	3.0 / 1040	tilting	Y	1/4000s	8.0/s	Y	Y
14.		Panasonic G85	2360	n	3.0 / 1040	swivel	Y	1/4000s	9.0/s	Y	Y
15.		Panasonic GH2	1534	n	3.0 / 460	swivel	n	1/4000s	3.0/s	Y	n
16.		Panasonic GX7	2760	n	3.0 / 1040	tilting	Y	1/8000s	5.0/s	Y	Y
17.		Panasonic GX9	2760	n	3.0 / 1240	tilting	Y	1/4000s	9.0/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 GX85 has a touchscreen, while the X100S has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.

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.

Concerning the storage of imaging data, both the X100S and the GX85 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.

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 Fujifilm X100S and Panasonic Lumix DMC-GX85 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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.		Fujifilm X100S	Y	stereo / mono	-	-	micro	2.0	-	-	-
2.		Panasonic GX85	Y	stereo / mono	-	-	micro	2.0	Y	-	-
3.		Canon G1 X	Y	stereo / mono	-	-	mini	2.0	-	-	-
4.		Fujifilm X-Pro1	Y	stereo / mono	-	-	mini	2.0	-	-	-
5.		Fujifilm X-T1	Y	stereo / mono	Y	-	mini	2.0	Y	-	-
6.		Fujifilm X-T10	Y	stereo / mono	Y	-	micro	2.0	Y	-	-
7.		Fujifilm X30	Y	stereo / mono	-	-	micro	2.0	Y	-	-
8.		Fujifilm X100	Y	stereo / -	-	-	mini	2.0	-	-	-
9.		Fujifilm X100T	Y	stereo / mono	Y	-	micro	2.0	Y	-	-
10.		Fujifilm X100F	Y	stereo / mono	Y	-	micro	2.0	Y	-	-
11.		Leica X Typ 113	Y	stereo / mono	-	-	mini	2.0	-	-	-
12.		Nikon Coolpix A	Y	stereo / mono	-	-	-	2.0	-	-	-
13.		Olympus E-M10 II	Y	stereo / mono	-	-	micro	2.0	Y	-	-
14.		Panasonic G85	Y	stereo / mono	Y	-	micro	2.0	Y	-	-
15.		Panasonic GH2	Y	stereo / mono	Y	-	mini	2.0	-	-	-
16.		Panasonic GX7	Y	stereo / mono	-	-	mini	2.0	Y	Y	-
17.		Panasonic GX9	Y	stereo / mono	-	-	micro	2.0	Y	-	Y

It is notable that the GX85 offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the X100S does not provide wifi capability.

The GX85 is a recent model that features in the current product line-up of Panasonic. In contrast, the X100S has been discontinued (but can be found pre-owned on ebay). As a replacement in the same line of cameras, the X100S was succeeded by the Fujifilm X100T. Further information on the features and operation of the X100S and GX85 can be found, respectively, in the Fujifilm X100S Manual (free pdf) or the online Panasonic GX85 Manual.

Review summary

So what conclusions can be drawn? Is the Fujifilm X100S better than the Panasonic GX85 or vice versa? A synthesis of the relative strong points of each of the models is listed below.

Reasons to prefer the Fujifilm X100S:

• Better image quality: Features bigger pixels on a larger sensor for higher quality imaging.
• Richer colors: The pixel size advantage translates into images with better, more accurate colors.
• More dynamic range: Larger pixels capture a wider spectrum of light and dark details.
• Better low-light sensitivity: Larger pixels means good image quality even under poor lighting.
• Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
• Ready to shoot: Has a lens built-in, whereas the GX85 requires a separate lens.
• Longer lasting: Can take more shots (330 versus 290) on a single battery charge.
• More heavily discounted: Has been available for much longer (launched in January 2013).

Advantages of the Panasonic Lumix DMC-GX85:

• Better video: Provides higher definition movie capture (4K/30p vs 1080/60p).
• More detailed viewfinder: Has higher resolution electronic viewfinder (2765k vs 2360k dots).
• Larger viewfinder image: Features a viewfinder with a higher magnification (0.70x vs 0.43x).
• Larger screen: Has a bigger rear LCD (3.0" vs 2.8") for image review and settings control.
• More detailed LCD: Has a higher resolution rear screen (1040k vs 460k dots).
• More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
• Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
• Faster burst: Shoots at higher frequency (8 vs 6 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 flexible: Takes interchangeable lenses and can thus be used with specialty optics.
• Easier travel charging: Can be conveniently charged via its USB port.
• Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
• Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
• More modern: Reflects 3 years and 2 months of technical progress since the X100S launch.

If the count of relative strengths (bullet points above) is taken as a measure, the GX85 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.

How about other alternatives? Do the specifications of the Fujifilm X100S and the Panasonic GX85 place the cameras among the top in their class? Find out in the latest Best Prime Lens Compact Camera and Best Mirrorless Interchangeable Lens Camera listings whether the two cameras rank among the cream of the crop.

In any case, while the specs-based evaluation of cameras can be instructive in revealing their potential as photographic tools, it says little about, for example, the shooting experience and imaging performance of the X100S and the GX85 in practical situations. At times, user reviews, such as those published at amazon, address these issues in a useful manner, but such feedback is on many occasions incomplete, inconsistent, and unreliable.

Expert reviews

This is why hands-on reviews by experts are important. The adjacent summary-table relays the overall verdicts of several of the most popular camera review sites (amateurphotographer [AP], cameralabs [CL], digitalcameraworld [DCW], dpreview [DPR], ephotozine [EPZ], photographyblog [PB]). As can be seen, the professional reviewers agree in many cases on the quality of different cameras, but sometimes their assessments diverge, reinforcing the earlier point that a camera decision is often a very personal choice.

Expert Camera Reviews

		Camera   Model	AP   score	CL   score	DCW   score	DPR   score	EPZ   score	PB   score	Camera Launch	Launch Price	Street Price
1.		Fujifilm X100S	5/5	+ +	..	81/100	4.5/5	5/5	Jan 2013	US$ 1 299	ebay.com
2.		Panasonic GX85	4.5/5	+ +	..	82/100	5/5	5/5	Apr 2016	US$ 799	amazon.com
3.		Canon G1 X	5/5	+	..	76/100	4/5	4.5/5	Jan 2012	US$ 799	ebay.com
4.		Fujifilm X-Pro1	5/5	+ +	..	79/100	4.5/5	4.5/5	Jan 2012	US$ 1 699	ebay.com
5.		Fujifilm X-T1	5/5	+ +	..	84/100	5/5	5/5	Jan 2014	US$ 1 299	ebay.com
6.		Fujifilm X-T10	4.5/5	+ +	..	80/100	5/5	5/5	May 2015	US$ 799	ebay.com
7.		Fujifilm X30	4/5	..	..	76/100	4.5/5	4.5/5	Aug 2014	US$ 599	ebay.com
8.		Fujifilm X100	3/5	..	..	75/100	4/5	5/5	Sep 2010	US$ 1 199	ebay.com
9.		Fujifilm X100T	5/5	+	..	81/100	4.5/5	5/5	Sep 2014	US$ 1 299	ebay.com
10.		Fujifilm X100F	5/5	+	3.9/5	83/100	4.5/5	4.5/5	Jan 2017	US$ 1 299	ebay.com
11.		Leica X Typ 113	3.5/5	..	..	..	3.5/5	4/5	Sep 2014	US$ 2 299	ebay.com
12.		Nikon Coolpix A	4/5	+	..	75/100	4/5	4/5	Mar 2013	US$ 1 099	ebay.com
13.		Olympus E-M10 II	4.5/5	+ +	..	80/100	5/5	5/5	Aug 2015	US$ 649	ebay.com
14.		Panasonic G85	..	+ +	..	84/100	5/5	4.5/5	Sep 2016	US$ 899	ebay.com
15.		Panasonic GH2	5/5	+ +	..	79/100	4.5/5	5/5	Sep 2010	US$ 899	ebay.com
16.		Panasonic GX7	4/5	+	..	79/100	5/5	5/5	Aug 2013	US$ 999	ebay.com
17.		Panasonic GX9	4/5	+	4/5	84/100	4.5/5	4.5/5	Feb 2018	US$ 849	ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The review scores listed above should be treated with care, though. The assessments were made in relation to similar cameras of the same technological generation. 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, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

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Check GX85 price at
amazon.com

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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