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Fujifilm GFX 100 vs Pentax K-5 II

The Fujifilm GFX 100 and the Pentax K-5 II are two digital cameras that were revealed to the public, respectively, in May 2019 and September 2012. The GFX 100 is a mirrorless interchangeable lens camera, while the K-5 II is a DSLR. The cameras are based on a medium format (GFX 100) and an APS-C (K-5 II) sensor. The Fujifilm has a resolution of 101.8 megapixels, whereas the Pentax provides 16.1 MP.

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

Headline Specifications
Fujifilm GFX 100 versus Pentax K-5 II
Fujifilm GFX 100 Pentax K-5 II
Mirrorless system camera Digital single lens reflex
Fujifilm G mount lenses Pentax K mount lenses
101.8 MP, Medium Format Sensor 16.1 MP, APS-C Sensor
4K/30p Video 1080/25p Video
ISO 100-12,800 (50 - 102,400) ISO 100-12,800 (80 - 51,200)
Viewfinder optional Optical viewfinder
3.2 LCD, 2360k dots 3.0 LCD, 921k dots
Tilting touchscreen Fixed screen (not touch-sensitive)
5 shutter flaps per second 7 shutter flaps per second
In-body stabilizationIn-body stabilization
Weathersealed bodyWeathersealed body
800 shots per battery charge740 shots per battery charge
156 x 144 x 75 mm, 1320 g 131 x 97 x 73 mm, 760 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Fujifilm GFX 100 and the Pentax K-5 II? 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 Fujifilm GFX 100 and the Pentax K-5 II. 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 dimensions are rounded to the nearest millimeter.

Size Fujifilm GFX 100 vs Pentax K-5 II
Compare GFX 100 versus K-5 II top
Comparison GFX 100 or K-5 II rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Pentax K-5 II is considerably smaller (43 percent) than the Fujifilm GFX 100. Moreover, the K-5 II is substantially lighter (42 percent) than the GFX 100. 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 100 gets 800 shots out of its NP-T125 battery, while the K-5 II can take 740 images on a single charge of its D-LI90 power pack. As can be seen in the images above, the GFX 100 has a battery grip built in. This facilitates image-taking in portrait orientation and gives it additional battery power. In order to provide similar functionality for the K-5 II, Pentax provides the D-BG4 vertical grip as an optional accessory (see here on eBay). The power pack in the GFX 100 can be charged via the USB port, so that it is not always necessary to take the battery charger along when travelling.

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. If you would like to visualize and compare a different camera combination, you can navigate to the CAM-parator app and make your selection from a broad list of cameras 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.
 
Fujifilm GFX 100 156 mm 144 mm 75 mm 1320 g 800 Y May 2019 9,999 i
2.
 
Pentax K-5 II 131 mm 97 mm 73 mm 760 g 740 Y Sep 2012 1,099i
3.
 
Fujifilm GFX 100S 150 mm 104 mm 87 mm 900 g 460 Y Jan 2021 5,999 i
4.
 
Fujifilm X-T4 135 mm 93 mm 64 mm 607 g 500 Y Feb 2020 1,699 i
5.
 
Fujifilm XP140 110 mm 71 mm 28 mm 207 g 240 Y Feb 2019 229 i
6.
 
Fujifilm X-H1 140 mm 97 mm 86 mm 673 g 310 Y Feb 2018 1,899 i
7.
 
Fujifilm GFX 50R 161 mm 97 mm 66 mm 775 g 400 Y Sep 2018 4,499 i
8.
 
Nikon Z6 134 mm 101 mm 67 mm 675 g 310 Y Aug 2018 1,999i
9.
 
Nikon Z7 134 mm 101 mm 67 mm 675 g 330 Y Aug 2018 3,399i
10.
 
Olympus E-M1X 144 mm 147 mm 75 mm 997 g 870 Y Jan 2019 2,999 i
11.
 
Pentax K-1 II 137 mm 110 mm 86 mm 1010 g 670 Y Feb 2018 1,999 i
12.
 
Pentax K-3 II 131 mm 100 mm 77 mm 800 g 720 Y Apr 2015 1,099 i
13.
 
Pentax K-50 130 mm 97 mm 71 mm 650 g 410 Y Jun 2013 599i
14.
 
Pentax K-3 131 mm 100 mm 77 mm 800 g 560 Y Oct 2013 1,299i
15.
 
Pentax K-30 130 mm 97 mm 71 mm 650 g 410 Y May 2012 849i
16.
 
Pentax K-5 131 mm 97 mm 73 mm 760 g 740 Y Sep 2010 1,099i
17.
 
Sony A7 III 127 mm 96 mm 74 mm 650 g 610 Y Feb 2018 1,999 i
Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.

The price is, of course, an important factor in any camera decision. 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-5 II was launched at a markedly lower price (by 89 percent) than the GFX 100, which puts it into a different market segment. Normally, street prices remain initially close to the MSRP, but after a couple of months, the first discounts appear. 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.

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

Of the two cameras under consideration, the Fujifilm GFX 100 features a medium format sensor and the Pentax K-5 II an APS-C sensor. The sensor area in the K-5 II is 74 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 100 has a native 4:3 aspect ratio, while the one in the K-5 II offers a 3:2 aspect.

Fujifilm GFX 100 and Pentax K-5 II sensor measures

With 101.8MP, the GFX 100 offers a higher resolution than the K-5 II (16.1MP), but the GFX 100 has smaller individual pixels (pixel pitch of 3.76μm versus 4.81μm for the K-5 II). However, the GFX 100 is a much more recent model (by 6 years and 8 months) than the K-5 II, and its sensor will have benefitted from technological advances during this time that enhance the light gathering capacity of its pixels. Coming back to sensor resolution, it should be mentioned that the GFX 100 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Fujifilm GFX 100 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the GFX 100 for good quality output (200 dots per inch) amounts to 58.2 x 43.7 inches or 147.9 x 110.9 cm, for very good quality (250 dpi) 46.6 x 34.9 inches or 118.3 x 88.8 cm, and for excellent quality (300 dpi) 38.8 x 29.1 inches or 98.6 x 74 cm. The corresponding values for the Pentax K-5 II are 24.6 x 16.3 inches or 62.6 x 41.5 cm for good quality, 19.7 x 13.1 inches or 50.1 x 33.2 cm for very good quality, and 16.4 x 10.9 inches or 41.7 x 27.6 cm for excellent quality prints.

The GFX 100 has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

The Fujifilm GFX 100 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-5 II are ISO 100 to ISO 12800, with the possibility to increase the ISO range to 80-51200.

GFX 100 versus K-5 II MP

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. 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 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.
 
Fujifilm GFX 100 Medium Format 101.8 11648 87364K/30p........
2.
 
Pentax K-5 II APS-C 16.1 4928 32641080/25p23.814.1123582
3.
 
Fujifilm GFX 100S Medium Format 101.8 11648 87364K/30p........
4.
 
Fujifilm X-T4 APS-C 26.0 6240 41604K/60p........
5.
 
Fujifilm XP140 1/2.3 15.9 4608 34564K/15p........
6.
 
Fujifilm X-H1 APS-C 24.0 6000 40004K/30p........
7.
 
Fujifilm GFX 50R Medium Format 51.1 8256 61921080/30p........
8.
 
Nikon Z6 Full Frame 24.3 6048 40244K/30p25.314.3329995
9.
 
Nikon Z7 Full Frame 45.4 8256 55044K/30p26.314.6266899
10.
 
Olympus E-M1X Four Thirds 20.2 5184 38884K/30p........
11.
 
Pentax K-1 II Full Frame 36.2 7360 49121080/60i........
12.
 
Pentax K-3 II APS-C 24.1 6016 40001080/60i23.613.6110680
13.
 
Pentax K-50 APS-C 16.1 4928 32641080/30p23.713.0112079
14.
 
Pentax K-3 APS-C 24.1 6016 40001080/60i23.713.4121680
15.
 
Pentax K-30 APS-C 16.1 4928 32641080/30p23.713.0112979
16.
 
Pentax K-5 APS-C 16.1 4928 32641080/25p23.714.1116282
17.
 
Sony A7 III Full Frame 24.0 6000 40004K/30p25.014.7373096

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 GFX 100 provides a higher video resolution than the K-5 II. It can shoot video footage at 4K/30p, while the Pentax is limited to 1080/25p.

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Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. For example, the K-5 II has an optical viewfinder, which can be very useful when shooting in bright sunlight. In contrast, the GFX 100 relies on live view and the rear LCD for framing. That said, the GFX 100 can be equipped with an optional viewfinder – the EVF-GFX2. The following table reports on some other key feature differences and similarities of the Fujifilm GFX 100, the Pentax K-5 II, 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.
 
Fujifilm GFX 100optional Y 3.2 2360 tilting Y 1/4000s 5.0 n Y
2.
 
Pentax K-5 IIoptical Y 3.0 921 fixed n 1/8000s 7.0 Y Y
3.
 
Fujifilm GFX 100S3690 Y 3.2 2360 full-flex Y 1/4000s 5.0 n Y
4.
 
Fujifilm X-T43690 n 3.0 1620 swivel Y 1/8000s 15.0 n Y
5.
 
Fujifilm XP140none n 3.0 920 fixed n 1/2000s 10.0 Y Y
6.
 
Fujifilm X-H13690 Y 3.0 1040 full-flex Y 1/8000s 14.0 n Y
7.
 
Fujifilm GFX 50R3690 n 3.2 2360 tilting Y 1/4000s 3.0 n n
8.
 
Nikon Z63690 Y 3.2 2100 tilting Y 1/8000s 12.0 n Y
9.
 
Nikon Z73690 Y 3.2 2100 tilting Y 1/8000s 9.0 n Y
10.
 
Olympus E-M1X2360 n 3.0 1037 swivel Y 1/8000s 18.0 n Y
11.
 
Pentax K-1 IIoptical Y 3.2 1037 full-flex n 1/8000s 4.4 n Y
12.
 
Pentax K-3 IIoptical Y 3.2 1037 fixed n 1/8000s 8.3 n Y
13.
 
Pentax K-50optical n 3.0 921 fixed n 1/6000s 6.0 Y Y
14.
 
Pentax K-3optical Y 3.2 1037 fixed n 1/8000s 8.3 Y Y
15.
 
Pentax K-30optical n 3.0 921 fixed n 1/6000s 6.0 Y Y
16.
 
Pentax K-5optical Y 3.0 921 fixed n 1/8000s 7.0 Y Y
17.
 
Sony A7 III2359 n 3.0 922 tilting Y 1/8000s 10.0 n Y

One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The GFX 100 has a touchscreen, while the K-5 II 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 100 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 100 and the Pentax K-5 II 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 100 and the K-5 II write their files to SDXC cards. The GFX 100 features dual card slots, which can be very useful in case a memory card fails. In contrast, the K-5 II only has one slot. The GFX 100 supports UHS-II cards (on both slots), while the K-5 II cannot take advantage of Ultra High Speed SD 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 100 and Pentax K-5 II 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.
 
Fujifilm GFX 100YstereomonoYYmicro3.1Y-Y
2.
 
Pentax K-5 IIYstereomonoY-mini2.0---
3.
 
Fujifilm GFX 100SYstereomonoYYmicro3.2Y-Y
4.
 
Fujifilm X-T4YstereomonoY-micro3.1Y-Y
5.
 
Fujifilm XP140-monomono--micro2.0Y-Y
6.
 
Fujifilm X-H1YstereomonoY-micro3.0Y--
7.
 
Fujifilm GFX 50RYstereomonoYYmicro3.0Y-Y
8.
 
Nikon Z6YstereomonoYYmicro3.1Y-Y
9.
 
Nikon Z7YstereomonoYYmicro3.1Y-Y
10.
 
Olympus E-M1XYstereomonoYYmicro3.0Y-Y
11.
 
Pentax K-1 IIYstereomonoYYmicro2.0Y--
12.
 
Pentax K-3 IIYmonomonoYYmini3.0---
13.
 
Pentax K-50Ymonomono--micro2.0---
14.
 
Pentax K-3YmonomonoYYmini3.0---
15.
 
Pentax K-30Ymonomono---2.0---
16.
 
Pentax K-5YstereomonoY-mini2.0---
17.
 
Sony A7 IIIYstereomonoYYmicro3.1YYY

It is notable that the GFX 100 has a headphone jack, which is not present on the K-5 II This port makes it possible to attach external headphones and monitor the quality of sound during the recording process.

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

The GFX 100 is a recent model that features in the current product line-up of Fujifilm. In contrast, the K-5 II has been discontinued (but can be found pre-owned on eBay). As a replacement in the same line of cameras, the K-5 II was succeeded by the Pentax K-3. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Fujifilm and Pentax websites.

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Review summary

So what conclusions can be drawn? Which of the two cameras – the Fujifilm GFX 100 or the Pentax K-5 II – has the upper hand? Is one clearly better than the other? The listing below highlights the relative strengths of the two models.

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Reasons to prefer the Fujifilm GFX 100:

  • More detail: Offers more megapixels (101.8 vs 16.1MP) with a 146% higher linear resolution.
  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • 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.
  • Better video: Provides higher definition movie capture (4K/30p vs 1080/25p).
  • Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
  • Better sound control: Has a headphone port that enables audio monitoring while 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 (2360k vs 921k dots).
  • More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
  • Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • More portrait friendly: Features an integrated vertical grip for easier portrait shooting.
  • Easier travel charging: Can be conveniently charged via its USB port.
  • More legacy lens friendly: Can take a broad range of non-native lenses via adapters.
  • Faster data transfer: Supports a more advanced USB protocol (3.1 vs 2.0).
  • 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.
  • Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
  • Faster buffer clearing: Supports Ultra High Speed (UHS-II) SDXC cards on both slots.
  • More modern: Reflects 6 years and 8 months of technical progress since the K-5 II launch.

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Arguments in favor of the Pentax K-5 II:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • 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 (7 vs 5 flaps/sec) to capture the decisive moment.
  • More compact: Is smaller (131x97mm vs 156x144mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 560g or 42 percent) and is thus easier to take along.
  • Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
  • More affordable: Was introduced into a lower priced category (89 percent cheaper at launch).
  • More heavily discounted: Has been around for much longer (launched in September 2012).

If the count of individual advantages (bullet points above) is taken as a guide, the GFX 100 is the clear winner of the match-up (23 : 9 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 wildlife photographer will view the differences between cameras in a way that diverges from the perspective of a family photog, and a person interested in architecture has distinct needs from a sports shooter. Hence, the decision which camera is best and worth buying is often a very personal one.

GFX 100 23:09 K-5 II

How about other alternatives? Do the specifications of the Fujifilm GFX 100 and the Pentax K-5 II 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 remains incomplete and does no justice, for example, to the way the GFX 100 or the K-5 II perform in practice. 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], 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.
 
Fujifilm GFX 1004.5/5+ +90/1005/54.5/5 May 2019 9,999 i
2.
 
Pentax K-5 II5/5..80/1005/54.5/5 Sep 2012 1,099i
3.
 
Fujifilm GFX 100S.......... Jan 2021 5,999 i
4.
 
Fujifilm X-T45/5+ +..5/55/5 Feb 2020 1,699 i
5.
 
Fujifilm XP140..+..3.5/54/5 Feb 2019 229 i
6.
 
Fujifilm X-H1..+86/1004.5/54.5/5 Feb 2018 1,899 i
7.
 
Fujifilm GFX 50R5/5..84/1004.5/54.5/5 Sep 2018 4,499 i
8.
 
Nikon Z65/5....4.5/55/5 Aug 2018 1,999i
9.
 
Nikon Z75/5+89/1004.5/55/5 Aug 2018 3,399i
10.
 
Olympus E-M1X4.5/5o..4.5/5.. Jan 2019 2,999 i
11.
 
Pentax K-1 II....79/1004.5/54.5/5 Feb 2018 1,999 i
12.
 
Pentax K-3 II4.5/5....5/55/5 Apr 2015 1,099 i
13.
 
Pentax K-505/5....5/54.5/5 Jun 2013 599i
14.
 
Pentax K-34/5..83/1005/55/5 Oct 2013 1,299i
15.
 
Pentax K-304/5..78/1004.5/54.5/5 May 2012 849i
16.
 
Pentax K-54/5..83/1005/54.5/5 Sep 2010 1,099i
17.
 
Sony A7 III..+ +89/1005/55/5 Feb 2018 1,999 i
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

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. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, 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.

Fujifilm GFX 100:
Check Amazon price
Pentax K-5 II:
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Other camera comparisons

Did this review help to inform your camera decision process? In case you would like to check on the differences and similarities of other camera models, just make your choice using the following search menu. 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 100 vs Pentax K-5 II

    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 100 Pentax K-5 II
    Camera Type Mirrorless system camera Digital single lens reflex
    Camera Lens Fujifilm G mount lenses Pentax K mount lenses
    Launch Date May 2019 September 2012
    Launch Price USD 9,999 USD 1,099
    Sensor Specs Fujifilm GFX 100 Pentax K-5 II
    Sensor Technology BSI-CMOS CMOS
    Sensor Format Medium Format Sensor APS-C Sensor
    Sensor Size 43.8 x 32.9 mm 23.7 x 15.7 mm
    Sensor Area 1441.02 mm2 372.09 mm2
    Sensor Diagonal 54.8 mm 28.4 mm
    Crop Factor 0.79x 1.5x
    Sensor Resolution 101.8 Megapixels 16.1 Megapixels
    Image Resolution 11648 x 8736 pixels 4928 x 3264 pixels
    Pixel Pitch 3.76 μm 4.81 μm
    Pixel Density 7.06 MP/cm2 4.32 MP/cm2
    Moiré control no AA filter Anti-Alias filter
    Movie Capability 4K/30p Video 1080/25p Video
    ISO Setting 100 - 12,800 ISO 100 - 12,800 ISO
    ISO Boost 50 - 102,400 ISO 80 - 51,200 ISO
    Image Processor X-Processor 4 PRIME II
    DXO Sensor Quality (score) .. 82
    DXO Color Depth (bits) .. 23.8
    DXO Dynamic Range (EV) .. 14.1
    DXO Low Light (ISO) .. 1235
    Screen Specs Fujifilm GFX 100 Pentax K-5 II
    Viewfinder Type Viewfinder optional Optical viewfinder
    Viewfinder Field of View 100%
    Viewfinder Magnification 0.61x
    Top-Level Screen Control Panel Control Panel
    LCD Framing Live View Live View
    Rear LCD Size 3.2inch 3.0inch
    LCD Resolution 2360k dots 921k dots
    LCD Attachment Tilting screen Fixed screen
    Touch Input Touchscreen no Touchscreen
    Shooting Specs Fujifilm GFX 100 Pentax K-5 II
    Focus System On-Sensor Phase-detect Phase-detect AF
    Manual Focusing AidFocus Peakingno Peaking Feature
    Continuous Shooting 5 shutter flaps/s 7 shutter flaps/s
    Electronic Shutterup to 1/16000sno E-Shutter
    Time-Lapse PhotographyIntervalometer built-inIntervalometer built-in
    Image StabilizationIn-body stabilizationIn-body stabilization
    Fill Flash no On-Board Flash Build-in Flash
    Storage Medium SDXC cards SDXC cards
    Second Storage Option Dual card slots Single card slot
    UHS card support Dual UHS-II no
    Connectivity Specs Fujifilm GFX 100 Pentax K-5 II
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket PC Sync socket
    USB Connector USB 3.1 USB 2.0
    HDMI Port micro HDMI mini HDMI
    Microphone Port External MIC port External MIC port
    Headphone Socket Headphone port no Headphone port
    Wifi Support Wifi built-in no Wifi
    Bluetooth Support Bluetooth built-in no Bluetooth
    Body Specs Fujifilm GFX 100 Pentax K-5 II
    Environmental SealingWeathersealed bodyWeathersealed body
    Battery Type NP-T125 D-LI90
    Battery Life (CIPA)800 shots per charge740 shots per charge
    In-Camera Charging USB charging no USB charging
    Body Dimensions 156 x 144 x 75 mm
    (6.1 x 5.7 x 3.0 in)
    131 x 97 x 73 mm
    (5.2 x 3.8 x 2.9 in)
    Camera Weight 1320 g (46.6 oz) 760 g (26.8 oz)

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