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Fujifilm GFX 50S vs Pentax K-3

The Fujifilm GFX 50S and the Pentax K-3 are two digital cameras that were officially introduced, respectively, in September 2016 and October 2013. The GFX 50S is a mirrorless interchangeable lens camera, while the K-3 is a DSLR. The cameras are based on a medium format (GFX 50S) and an APS-C (K-3) sensor. The Fujifilm has a resolution of 51.1 megapixels, whereas the Pentax provides 24.1 MP.

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

Headline Specifications
Fujifilm GFX 50S
versus
Pentax K-3
Fujifilm GFX 50S   Pentax K-3
Mirrorless system camera Digital single lens reflex
Fujifilm G mount lenses Pentax K mount lenses
51.1 MP – Medium Format sensor 24.1 MP – APS-C sensor
1080/30p Video 1080/60i Video
ISO 100-12,800 (50 - 102,400) ISO 100-51,200
Viewfinder optional Optical viewfinder
3.2" LCD – 2360k dots 3.2" LCD – 1037k dots
Fully flexible touchscreen Fixed screen (not touch-sensitive)
3 shutter flaps per second 8.3 shutter flaps per second
Lens stabilization onlyIn-body stabilization
Weathersealed bodyWeathersealed body
400 shots per battery charge560 shots per battery charge
148 x 94 x 91 mm, 740 g 131 x 100 x 77 mm, 800 g
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Going beyond this snapshot of core features and characteristics, what are the differences between the Fujifilm GFX 50S and the Pentax K-3? 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

An illustration of the physical size and weight of the Fujifilm GFX 50S and the Pentax K-3 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 K-3 can be obtained in two different colors (black, silver), while the GFX 50S is only available in black.

Size Fujifilm GFX 50S vs Pentax K-3
Compare GFX 50S versus K-3 top
Comparison GFX 50S or K-3 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Pentax K-3 is notably smaller (6 percent) than the Fujifilm GFX 50S. However, the K-3 is markedly heavier (8 percent) than the GFX 50S. In this context, it is worth noting that both cameras are splash and dust-proof and can, hence, be used in inclement weather conditions or harsh environments.

The above size and weight comparisons are to some extent incomplete since they do not consider the interchangeable lenses that both of these cameras require. Hence, you might want to study and compare the specifications of available lenses in order to get the full picture of the size and weight of the two camera systems.

Concerning battery life, the GFX 50S gets 400 shots out of its Fujifilm NP-T125 battery, while the K-3 can take 560 images on a single charge of its Pentax D-LI90 power pack.

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. 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
# image Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Fujifilm GFX 50S 148 mm 94 mm 91 mm 740 g 400 Y Sep 2016 6,499ebay.com
2.
 
Pentax K-3 131 mm 100 mm 77 mm 800 g 560 Y Oct 2013 1,299ebay.com
3.
 
Canon 5D Mark IV 151 mm 116 mm 76 mm 890 g 900 Y Aug 2016 3,499 amazon.com
4.
 
Canon 70D 139 mm 104 mm 79 mm 755 g 920 Y Jul 2013 1,199ebay.com
5.
 
Fujifilm GFX 100S 150 mm 104 mm 87 mm 900 g 460 Y Jan 2021 5,999 amazon.com
6.
 
Fujifilm GFX 50S II 150 mm 104 mm 87 mm 900 g 440 Y Sep 2021 3,999 amazon.com
7.
 
Fujifilm GFX 50R 161 mm 97 mm 66 mm 775 g 400 Y Sep 2018 4,499ebay.com
8.
 
Hasselblad X1D II 148 mm 97 mm 70 mm 766 g .. Y Jun 2019 5,750ebay.com
9.
 
Hasselblad X1D 150 mm 98 mm 71 mm 725 g .. Y Jun 2016 8,995ebay.com
10.
 
Leica Q3 130 mm 80 mm 93 mm 743 g 350 Y May 2023 5,995 amazon.com
11.
 
Leica M10 139 mm 80 mm 39 mm 660 g 210 Y Jan 2017 6,595ebay.com
12.
 
Leica SL 147 mm 104 mm 39 mm 847 g 400 Y Oct 2015 7,450ebay.com
13.
 
Nikon D7500 136 mm 104 mm 73 mm 720 g 950 Y Apr 2017 1,299 amazon.com
14.
 
Pentax KP 132 mm 101 mm 76 mm 703 g 390 Y Jan 2017 1,099ebay.com
15.
 
Pentax K-3 II 131 mm 100 mm 77 mm 800 g 720 Y Apr 2015 1,099ebay.com
16.
 
Pentax K-5 II 131 mm 97 mm 73 mm 760 g 740 Y Sep 2012 1,099ebay.com
17.
 
Pentax K-5 131 mm 97 mm 73 mm 760 g 740 Y Sep 2010 1,099ebay.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 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 K-3 was launched at a markedly lower price (by 80 percent) than the GFX 50S, which puts it into a different market segment. Usually, retail prices stay at first close to the launch price, but after several months, discounts become available. Later in the product cycle and, in particular, when the replacement model is about to appear, further discounting and stock clearance sales often push the camera price considerably down. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.

Sensor comparison

The size of the 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 more expensive and lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Fujifilm GFX 50S features a medium format sensor and the Pentax K-3 an APS-C sensor. The sensor area in the K-3 is 75 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 0.79 and 1.5. The sensor in the GFX 50S has a native 4:3 aspect ratio, while the one in the K-3 offers a 3:2 aspect.

Fujifilm GFX 50S and Pentax K-3 sensor measures

With 51.1MP, the GFX 50S offers a higher resolution than the K-3 (24.1MP), but the GFX 50S nevertheless has larger individual pixels (pixel pitch of 5.33μm versus 3.90μm for the K-3) due to its larger sensor. Moreover, the GFX 50S is a much more recent model (by 2 years and 11 months) than the K-3, 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 resolution advantage of the Fujifilm GFX 50S implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the GFX 50S for good quality output (200 dots per inch) amounts to 41.3 x 31 inches or 104.9 x 78.6 cm, for very good quality (250 dpi) 33 x 24.8 inches or 83.9 x 62.9 cm, and for excellent quality (300 dpi) 27.5 x 20.6 inches or 69.9 x 52.4 cm. The corresponding values for the Pentax K-3 are 30.1 x 20 inches or 76.4 x 50.8 cm for good quality, 24.1 x 16 inches or 61.1 x 40.6 cm for very good quality, and 20.1 x 13.3 inches or 50.9 x 33.9 cm for excellent quality prints.

The Fujifilm GFX 50S has a native sensitivity range from ISO 100 to ISO 12800, which can be extended to ISO 50-102400. The corresponding ISO settings for the Pentax K-3 are ISO 100 to ISO 51200 (no boost).

Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.

GFX 50S versus K-3 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"). 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
# image Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Fujifilm GFX 50S Medium Format 51.1 8256 61921080/30p25.414.1297796
2.
 
Pentax K-3 APS-C 24.1 6016 40001080/60i23.713.4121680
3.
 
Canon 5D Mark IV Full Frame 30.1 6720 44804K/30p24.813.6299591
4.
 
Canon 70D APS-C 20.0 5472 36481080/30p22.511.692668
5.
 
Fujifilm GFX 100S Medium Format 101.8 11648 87364K/30p25.814.73391100
6.
 
Fujifilm GFX 50S II Medium Format 51.1 8256 61921080/30p25.914.83456100
7.
 
Fujifilm GFX 50R Medium Format 51.1 8256 61921080/30p25.714.4316998
8.
 
Hasselblad X1D II Medium Format 51.3 8272 62001080/25p25.714.5323499
9.
 
Hasselblad X1D Medium Format 51.3 8272 62001080/25p26.214.84489102
10.
 
Leica Q3 Full Frame 60.3 9528 63288K/30p25.414.7321696
11.
 
Leica M10 Full Frame 23.8 5952 3992none24.413.2213386
12.
 
Leica SL Full Frame 24.0 6000 40004K/30p25.013.4182188
13.
 
Nikon D7500 APS-C 20.7 5568 37124K/30p24.314.0148386
14.
 
Pentax KP APS-C 24.1 6016 40001080/60i23.913.2169981
15.
 
Pentax K-3 II APS-C 24.1 6016 40001080/60i23.613.6110680
16.
 
Pentax K-5 II APS-C 16.1 4928 32641080/25p23.814.1123582
17.
 
Pentax K-5 APS-C 16.1 4928 32641080/25p23.714.1116282
Note: DXO values in italics represent estimates based on sensor size and age.
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Many modern cameras are not only capable of taking still images, but can also record movies. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the K-3 provides a faster frame rate than the GFX 50S. It can shoot movie footage at 1080/60i, while the Fujifilm is limited to 1080/30p.

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Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. For example, the K-3 has an optical viewfinder, which can be very useful when shooting in bright sunlight. In contrast, the GFX 50S relies on live view and the rear LCD for framing. That said, the GFX 50S can be equipped with an optional viewfinder – the EVF-TL1. The following table reports on some other key feature differences and similarities of the Fujifilm GFX 50S, the Pentax K-3, and comparable cameras.

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Core Features
# image 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 GFX 50Soptional Y3.2 / 2360 full-flex Y 1/4000s 3.0/s n n
2.
 
Pentax K-3optical Y3.2 / 1037 fixed n 1/8000s 8.3/s Y Y
3.
 
Canon 5D Mark IVoptical Y3.2 / 1620 fixed Y 1/8000s 7.0/s n n
4.
 
Canon 70Doptical Y3.0 / 1040 swivel Y 1/8000s 7.0/s Y n
5.
 
Fujifilm GFX 100S3690 Y3.2 / 2360 full-flex Y 1/4000s 5.0/s n Y
6.
 
Fujifilm GFX 50S II3690 Y3.2 / 2360 full-flex Y 1/4000s 3.0/s n Y
7.
 
Fujifilm GFX 50R3690 n3.2 / 2360 tilting Y 1/4000s 3.0/s n n
8.
 
Hasselblad X1D II3690 n3.6 / 2360 fixed Y 1/2000s 2.7/s n n
9.
 
Hasselblad X1D2360 n3.0 / 920 fixed Y 1/2000s 2.3/s n n
10.
 
Leica Q35760 n3.0 / 1840 tilting Y 1/2000s 15.0/s n Y
11.
 
Leica M10optical n3.0 / 1037 fixed n 1/4000s 5.0/s n n
12.
 
Leica SL4400 Y3.0 / 1040 fixed Y 1/8000s 11.0/s n n
13.
 
Nikon D7500optical Y3.2 / 922 tilting Y 1/8000s 8.0/s Y n
14.
 
Pentax KPoptical n3.0 / 921 tilting n 1/6000s 7.0/s Y Y
15.
 
Pentax K-3 IIoptical Y3.2 / 1037 fixed n 1/8000s 8.3/s n Y
16.
 
Pentax K-5 IIoptical Y3.0 / 921 fixed n 1/8000s 7.0/s Y Y
17.
 
Pentax K-5optical Y3.0 / 921 fixed n 1/8000s 7.0/s Y Y
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.
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One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The GFX 50S has a touchscreen, while the K-3 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 GFX 50S 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 Fujifilm GFX 50S and the Pentax K-3 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 GFX 50S and the K-3 write their files to SDXC cards. Both cameras feature dual card slots, which can be very useful in case a memory card fails. The GFX 50S supports UHS-II cards (on both slots), while the K-3 can use UHS-I cards.

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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 Fujifilm GFX 50S and Pentax K-3 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
# image Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Fujifilm GFX 50SYstereo / monoYYmicro3.0Y--
2.
 
Pentax K-3Ymono / monoYYmini3.0---
3.
 
Canon 5D Mark IVYmono / monoYYmini3.0YY-
4.
 
Canon 70DYstereo / monoY-mini2.0Y--
5.
 
Fujifilm GFX 100SYstereo / monoYYmicro3.2Y-Y
6.
 
Fujifilm GFX 50S IIYstereo / monoYYmicro3.2Y--
7.
 
Fujifilm GFX 50RYstereo / monoYYmicro3.0Y-Y
8.
 
Hasselblad X1D IIYstereo / monoYY-3.0Y--
9.
 
Hasselblad X1DYstereo / monoYYmini3.0Y--
10.
 
Leica Q3Ystereo / mono--micro3.1Y-Y
11.
 
Leica M10Y- / -----Y--
12.
 
Leica SLYstereo / monoYYfull3.0Y--
13.
 
Nikon D7500Ystereo / monoYYmini2.0Y-Y
14.
 
Pentax KPYstereo / monoY--2.0Y--
15.
 
Pentax K-3 IIYmono / monoYYmini3.0---
16.
 
Pentax K-5 IIYstereo / monoY-mini2.0---
17.
 
Pentax K-5Ystereo / monoY-mini2.0---
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It is notable that the GFX 50S offers wifi support, while the K-3 does not. Wifi can be a very convenient means to transfer image data to an off-camera location.

Both cameras feature a PC Sync terminal to control professional strobe lights, which will be appreciated by studio photographers.

Both the GFX 50S and the K-3 have been discontinued, but can regularly be found used on ebay. The K-3 was replaced by the Pentax K-3 II, while the GFX 50S was followed by the Fujifilm GFX 50S II. Further information on the features and operation of the GFX 50S and K-3 can be found, respectively, in the Fujifilm GFX 50S Manual (free pdf) or the online Pentax K-3 Manual.

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Review summary

So what is the bottom line? Is the Fujifilm GFX 50S better than the Pentax K-3 or vice versa? Below is a summary of the relative strengths of each of the two contestants.

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Reasons to prefer the Fujifilm GFX 50S:

  • More detail: Offers more megapixels (51.1 vs 24.1MP) with a 43% higher linear resolution.
  • Better image quality: Features a larger and more technologically advanced imaging 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.
  • More detailed LCD: Has a higher resolution rear screen (2360k vs 1037k dots).
  • More flexible LCD: Has a full-flex screen for odd-angle shots in portrait or landscape orientation.
  • Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • More legacy lens friendly: Can take a broad range of non-native lenses via adapters.
  • Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
  • Faster buffer clearing: Supports a more advanced SD data transfer standard (UHS-II vs UHS-I).
  • More modern: Reflects 2 years and 11 months of technical progress since the K-3 launch.

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Arguments in favor of the Pentax K-3:

  • Better video: Provides higher movie framerates (1080/60i versus 1080/30p).
  • Easier framing: Has an optical viewfinder for image composition and settings control.
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • Faster burst: Shoots at higher frequency (8.3 vs 3 flaps/sec) to capture the decisive moment.
  • Longer lasting: Gets more shots (560 versus 400) out of a single battery charge.
  • Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
  • Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
  • More affordable: Was introduced into a lower priced category (80 percent cheaper at launch).
  • More heavily discounted: Has been around for much longer (launched in October 2013).

If the count of relative strengths (bullet points above) is taken as a measure, the GFX 50S is the clear winner of the match-up (13 : 9 points). However, the relevance of individual strengths will vary across photographers, so that you might want to apply your own weighing scheme to the summary points when reflecting and deciding 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.

GFX 50S 13:09 K-3

How about other alternatives? Do the specifications of the Fujifilm GFX 50S and the Pentax K-3 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 GFX 50S and the K-3 in practical situations. User reviews that are available, for instance, at amazon can sometimes shed light on these issues, but such feedback is all too often partial, inconsistent, and inaccurate.

Expert reviews

This is why expert reviews 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.

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Expert Camera Reviews
# image  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Fujifilm GFX 50S....4.5/585/1005/54.5/5 Sep 2016 6,499ebay.com
2.
 
Pentax K-34/5....83/1005/55/5 Oct 2013 1,299ebay.com
3.
 
Canon 5D Mark IV4.5/5+ +4/587/1004.5/54.5/5 Aug 2016 3,499 amazon.com
4.
 
Canon 70D5/5+ +..83/1004.5/55/5 Jul 2013 1,199ebay.com
5.
 
Fujifilm GFX 100S5/5+ +5/590/1005/55/5 Jan 2021 5,999 amazon.com
6.
 
Fujifilm GFX 50S II5/5..5/587/100..5/5 Sep 2021 3,999 amazon.com
7.
 
Fujifilm GFX 50R5/5..5/584/1004.5/54.5/5 Sep 2018 4,499ebay.com
8.
 
Hasselblad X1D II....4/5..4/54/5 Jun 2019 5,750ebay.com
9.
 
Hasselblad X1D..o..81/100..4/5 Jun 2016 8,995ebay.com
10.
 
Leica Q35/5..4.5/5....4.5/5 May 2023 5,995 amazon.com
11.
 
Leica M104.5/5......4/54.5/5 Jan 2017 6,595ebay.com
12.
 
Leica SL4/5..4/584/1004.5/54/5 Oct 2015 7,450ebay.com
13.
 
Nikon D75004.5/5+ +4.5/586/1005/54.5/5 Apr 2017 1,299 amazon.com
14.
 
Pentax KP4/5..3/582/1005/54.5/5 Jan 2017 1,099ebay.com
15.
 
Pentax K-3 II4.5/5......5/55/5 Apr 2015 1,099ebay.com
16.
 
Pentax K-5 II5/5....80/1005/54.5/5 Sep 2012 1,099ebay.com
17.
 
Pentax K-54/5....83/1005/54.5/5 Sep 2010 1,099ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.
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The above review scores should be interpreted with care, though. The ratings are only valid when referring to cameras in the same category and of the same age. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and 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.

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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: Fujifilm GFX 50S vs Pentax K-3

    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 Fujifilm GFX 50S Pentax K-3
    Camera Type Mirrorless system camera Digital single lens reflex
    Camera Lens Fujifilm G mount lenses Pentax K mount lenses
    Launch Date September 2016 October 2013
    Launch Price USD 6,499 USD 1,299
    Sensor Specs Fujifilm GFX 50S Pentax K-3
    Sensor Technology CMOS CMOS
    Sensor Format Medium Format Sensor APS-C Sensor
    Sensor Size 44.0 x 33.0 mm 23.5 x 15.6 mm
    Sensor Area 1452 mm2 366.6 mm2
    Sensor Diagonal 55 mm 28.2 mm
    Crop Factor 0.79x 1.5x
    Sensor Resolution 51.1 Megapixels 24.1 Megapixels
    Image Resolution 8256 x 6192 pixels 6016 x 4000 pixels
    Pixel Pitch 5.33 μm 3.90 μm
    Pixel Density 3.52 MP/cm2 6.56 MP/cm2
    Moiré control no AA filter no AA filter
    Movie Capability 1080/30p Video 1080/60i Video
    ISO Setting 100 - 12,800 ISO 100 - 51,200 ISO
    ISO Boost 50 - 102,400 ISO no Enhancement
    Image Processor X Processor Pro PRIME III
    DXO Sensor Quality (score) .. 80
    DXO Color Depth (bits) .. 23.7
    DXO Dynamic Range (EV) .. 13.4
    DXO Low Light (ISO) .. 1216
    Screen Specs Fujifilm GFX 50S Pentax K-3
    Viewfinder Type Viewfinder optional Optical viewfinder
    Viewfinder Field of View 100%
    Viewfinder Magnification 0.63x
    Top-Level Screen Control Panel Control Panel
    LCD Framing Live View Live View
    Rear LCD Size 3.2inch 3.2inch
    LCD Resolution 2360k dots 1037k dots
    LCD Attachment Fully flexible screen Fixed screen
    Touch Input Touchscreen no Touchscreen
    Shooting Specs Fujifilm GFX 50S Pentax K-3
    Focus System Contrast-detect AF Phase-detect AF
    Manual Focusing AidFocus PeakingFocus Peaking
    Max Shutter Speed (mechanical) 1/4000s 1/8000s
    Continuous Shooting 3 shutter flaps/s 8.3 shutter flaps/s
    Electronic Shutterup to 1/16000sno E-Shutter
    Time-Lapse PhotographyIntervalometer built-inIntervalometer built-in
    Image StabilizationLens stabilization onlyIn-body stabilization
    Fill Flash no On-Board Flash Built-in Flash
    Storage Medium SDXC cards SDXC cards
    Single or Dual Card Slots Dual card slots Dual card slots
    UHS card support Dual UHS-II UHS-I
    Connectivity Specs Fujifilm GFX 50S Pentax K-3
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket PC Sync socket
    USB Connector USB 3.0 USB 3.0
    HDMI Port micro HDMI mini HDMI
    Microphone Port External MIC port External MIC port
    Headphone Socket Headphone port Headphone port
    Wifi Support Wifi built-in no Wifi
    Body Specs Fujifilm GFX 50S Pentax K-3
    Environmental SealingWeathersealed bodyWeathersealed body
    Battery Type Fujifilm NP-T125 Pentax D-LI90
    Battery Life (CIPA)400 shots per charge560 shots per charge
    Body Dimensions 148 x 94 x 91 mm
    (5.8 x 3.7 x 3.6 in)
    131 x 100 x 77 mm
    (5.2 x 3.9 x 3.0 in)
    Camera Weight 740 g (26.1 oz) 800 g (28.2 oz)
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