Fujifilm GFX 100S vs Pentax K-S1
The Fujifilm GFX 100S and the Pentax K-S1 are two digital cameras that were revealed to the public, respectively, in January 2021 and August 2014. The GFX 100S is a mirrorless interchangeable lens camera, while the K-S1 is a DSLR. The cameras are based on a medium format (GFX 100S) and an APS-C (K-S1) sensor. The Fujifilm has a resolution of 101.8 megapixels, whereas the Pentax provides 20 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.
Going beyond this snapshot of core features and characteristics, what are the differences between the Fujifilm GFX 100S and the Pentax K-S1? 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 GFX 100S and the Pentax K-S1 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 width, height and depth measures are rounded to the nearest millimeter.
The K-S1 can be obtained in four different colors (black, grey, orange, white), while the GFX 100S is only available in black.
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Pentax K-S1 is notably smaller (28 percent) than the Fujifilm GFX 100S. Moreover, the K-S1 is substantially lighter (38 percent) than the GFX 100S. It is worth mentioning in this context that the GFX 100S is splash and dust resistant, while the K-S1 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 GFX 100S gets 460 shots out of its Fujifilm NP-W235 battery, while the K-S1 can take 410 images on a single charge of its Pentax D-LI109 power pack. The power pack in the GFX 100S can be charged via the USB port, so that it is not always necessary to take the battery charger along when travelling.
The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. 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.
Camera Model |
Camera Width |
Camera Height |
Camera Depth |
Camera Weight |
Battery Life |
Weather Sealing |
Camera Launch |
Launch Price (USD) |
Street Price |
||
---|---|---|---|---|---|---|---|---|---|---|---|
1. | Fujifilm GFX 100S | 150 mm | 104 mm | 87 mm | 900 g | 460 | Y | Jan 2021 | 5,999 | amazon.com | |
2. | Pentax K-S1 | 121 mm | 93 mm | 70 mm | 558 g | 410 | n | Aug 2014 | 749 | ebay.com | |
3. | Canon R3 | 150 mm | 143 mm | 87 mm | 1015 g | 760 | Y | Sep 2021 | 5,999 | amazon.com | |
4. | Fujifilm GFX 50R | 161 mm | 97 mm | 66 mm | 775 g | 400 | Y | Sep 2018 | 4,499 | ebay.com | |
5. | Fujifilm GFX 50S | 148 mm | 94 mm | 91 mm | 740 g | 400 | Y | Sep 2016 | 6,499 | ebay.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 100 | 156 mm | 144 mm | 75 mm | 1320 g | 800 | Y | May 2019 | 9,999 | ebay.com | |
8. | Fujifilm GFX 100 II | 152 mm | 117 mm | 99 mm | 1030 g | 540 | Y | Sep 2023 | 7,499 | amazon.com | |
9. | Hasselblad X1D II | 148 mm | 97 mm | 70 mm | 766 g | .. | Y | Jun 2019 | 5,750 | ebay.com | |
10. | Hasselblad X2D 100C | 149 mm | 106 mm | 75 mm | 895 g | 420 | Y | Sep 2022 | 8,199 | amazon.com | |
11. | Leica SL2 | 146 mm | 107 mm | 42 mm | 953 g | 370 | Y | Nov 2019 | 5,999 | amazon.com | |
12. | Nikon D5300 | 125 mm | 98 mm | 76 mm | 480 g | 600 | n | Oct 2013 | 799 | ebay.com | |
13. | Nikon D5500 | 124 mm | 97 mm | 70 mm | 470 g | 820 | n | Jan 2015 | 899 | ebay.com | |
14. | Pentax K-500 | 130 mm | 97 mm | 71 mm | 646 g | 710 | n | Jun 2013 | 549 | ebay.com | |
15. | Pentax K-S2 | 123 mm | 91 mm | 73 mm | 678 g | 410 | Y | Feb 2015 | 749 | ebay.com | |
16. | Sony A1 | 129 mm | 97 mm | 81 mm | 737 g | 530 | Y | Jan 2021 | 6,499 | amazon.com | |
17. | Sony A68 | 143 mm | 104 mm | 81 mm | 610 g | 540 | n | Nov 2015 | 699 | ebay.com | |
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders. | |||||||||||
Any camera decision will obviously take relative prices into account. The manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The K-S1 was launched at a markedly lower price (by 88 percent) than the GFX 100S, 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 imaging sensor is at the core of digital cameras and its size is one of the main determining factors of image quality. All other things equal, a large sensor will have larger individual pixel-units that offer better low-light sensitivity, wider dynamic range, and 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 associated with larger, more expensive camera bodies and lenses.
Of the two cameras under consideration, the Fujifilm GFX 100S features a medium format sensor and the Pentax K-S1 an APS-C sensor. The sensor area in the K-S1 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 100S has a native 4:3 aspect ratio, while the one in the K-S1 offers a 3:2 aspect.
With 101.8MP, the GFX 100S offers a higher resolution than the K-S1 (20MP), but the GFX 100S has smaller individual pixels (pixel pitch of 3.76μm versus 4.28μm for the K-S1). However, the GFX 100S is a much more recent model (by 6 years and 5 months) than the K-S1, 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 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 100S implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the GFX 100S 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-S1 are 27.4 x 18.2 inches or 69.5 x 46.3 cm for good quality, 21.9 x 14.6 inches or 55.6 x 37.1 cm for very good quality, and 18.2 x 12.2 inches or 46.3 x 30.9 cm for excellent quality prints.
The GFX 100S has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
Unlike the K-S1, the GFX 100S has the capacity to capture high quality composite images (YESMP) by combining multiple shots after shifting its sensor by miniscule distances. This multi-shot, pixel-shift mode is most suitable for photography of stationary objects (landscapes, studio scenes).
The Fujifilm GFX 100S 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-S1 are ISO 100 to ISO 51200 (no boost).
In terms of underlying technology, the GFX 100S is build around a BSI-CMOS sensor, while the K-S1 uses a 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.
For many cameras, data on sensor performance has been reported by DXO Mark. 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.
Camera Model |
Sensor Class |
Resolution (MP) |
Horiz. Pixels |
Vert. Pixels |
Video Format |
DXO Portrait |
DXO Landscape |
DXO Sports |
DXO Overall |
||
---|---|---|---|---|---|---|---|---|---|---|---|
1. | Fujifilm GFX 100S | Medium Format | 101.8 | 11648 | 8736 | 4K/30p | 25.8 | 14.7 | 3391 | 100 | |
2. | Pentax K-S1 | APS-C | 20.0 | 5472 | 3648 | 1080/30p | 23.5 | 13.0 | 1061 | 78 | |
3. | Canon R3 | Full Frame | 24.0 | 6000 | 4000 | 6K/60p | 25.0 | 14.7 | 4086 | 96 | |
4. | Fujifilm GFX 50R | Medium Format | 51.1 | 8256 | 6192 | 1080/30p | 25.7 | 14.4 | 3169 | 98 | |
5. | Fujifilm GFX 50S | Medium Format | 51.1 | 8256 | 6192 | 1080/30p | 25.4 | 14.1 | 2977 | 96 | |
6. | Fujifilm GFX 50S II | Medium Format | 51.1 | 8256 | 6192 | 1080/30p | 25.9 | 14.8 | 3456 | 100 | |
7. | Fujifilm GFX 100 | Medium Format | 101.8 | 11648 | 8736 | 4K/30p | 25.7 | 14.5 | 3227 | 99 | |
8. | Fujifilm GFX 100 II | Medium Format | 101.8 | 11648 | 8736 | 8K/30p | 25.9 | 15.0 | 3651 | 101 | |
9. | Hasselblad X1D II | Medium Format | 51.3 | 8272 | 6200 | 1080/25p | 25.7 | 14.5 | 3234 | 99 | |
10. | Hasselblad X2D 100C | Medium Format | 102.1 | 11656 | 8762 | none | 25.9 | 14.9 | 3550 | 101 | |
11. | Leica SL2 | Full Frame | 46.7 | 8368 | 5584 | 4K/60p | 25.3 | 14.3 | 2866 | 95 | |
12. | Nikon D5300 | APS-C | 24.0 | 6000 | 4000 | 1080/60p | 24.0 | 13.9 | 1338 | 83 | |
13. | Nikon D5500 | APS-C | 24.0 | 6000 | 4000 | 1080/60p | 24.1 | 14.0 | 1438 | 84 | |
14. | Pentax K-500 | APS-C | 16.1 | 4928 | 3264 | 1080/30p | 23.7 | 13.1 | 1087 | 79 | |
15. | Pentax K-S2 | APS-C | 20.0 | 5472 | 3648 | 1080/30p | 23.6 | 12.9 | 1514 | 79 | |
16. | Sony A1 | Full Frame | 49.8 | 8640 | 5760 | 8k/30p | 25.9 | 14.5 | 3163 | 98 | |
17. | Sony A68 | APS-C | 24.0 | 6000 | 4000 | 1080/60i | 24.1 | 13.5 | 701 | 79 | |
Note: DXO values in italics represent estimates based on sensor size and age. |
Many modern cameras cannot only take still pictures, but also record videos. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the GFX 100S provides a higher video resolution than the K-S1. It can shoot video footage at 4K/30p, while the Pentax is limited to 1080/30p.
Feature comparison
Beyond body and sensor, cameras can and do differ across a range of features. For example, the GFX 100S has an electronic viewfinder (3690k dots), while the K-S1 has an optical one. Both systems have their advantages, with the electronic viewfinder making it possible to project supplementary shooting information into the framing view, whereas the optical viewfinder offers lag-free viewing and a very clear framing image. The viewfinders of both cameras offer the same field of view (100%), but the viewfinder of the GFX 100S has a higher magnification than the one of the K-S1 (0.77x vs 0.63x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The following table reports on some other key feature differences and similarities of the Fujifilm GFX 100S, the Pentax K-S1, and comparable cameras.
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 100S | 3690 | Y | 3.2 / 2360 | full-flex | Y | 1/4000s | 5.0/s | n | Y | |
2. | Pentax K-S1 | optical | n | 3.0 / 921 | fixed | n | 1/6000s | 5.4/s | Y | Y | |
3. | Canon R3 | 5760 | Y | 3.2 / 4150 | swivel | Y | 1/8000s | 12.0/s | n | Y | |
4. | Fujifilm GFX 50R | 3690 | n | 3.2 / 2360 | tilting | Y | 1/4000s | 3.0/s | n | n | |
5. | Fujifilm GFX 50S | optional | Y | 3.2 / 2360 | full-flex | Y | 1/4000s | 3.0/s | n | n | |
6. | Fujifilm GFX 50S II | 3690 | Y | 3.2 / 2360 | full-flex | Y | 1/4000s | 3.0/s | n | Y | |
7. | Fujifilm GFX 100 | optional | Y | 3.2 / 2360 | full-flex | Y | 1/4000s | 5.0/s | n | Y | |
8. | Fujifilm GFX 100 II | 9440 | Y | 3.2 / 2360 | full-flex | Y | 1/4000s | 8.0/s | n | Y | |
9. | Hasselblad X1D II | 3690 | n | 3.6 / 2360 | fixed | Y | 1/2000s | 2.7/s | n | n | |
10. | Hasselblad X2D 100C | 5760 | Y | 3.6 / 2360 | tilting | Y | 1/4000s | 3.3/s | n | Y | |
11. | Leica SL2 | 5760 | Y | 3.2 / 2100 | fixed | Y | 1/8000s | 10.0/s | n | Y | |
12. | Nikon D5300 | optical | n | 3.2 / 1037 | swivel | n | 1/4000s | 5.0/s | Y | n | |
13. | Nikon D5500 | optical | n | 3.2 / 1037 | swivel | Y | 1/4000s | 5.0/s | Y | n | |
14. | Pentax K-500 | optical | n | 3.0 / 921 | fixed | n | 1/6000s | 6.0/s | Y | Y | |
15. | Pentax K-S2 | optical | n | 3.0 / 921 | swivel | n | 1/6000s | 5.4/s | Y | Y | |
16. | Sony A1 | 9437 | n | 3.0 / 1440 | tilting | Y | 1/8000s | 10.0/s | n | Y | |
17. | Sony A68 | 1440 | Y | 2.7 / 460 | tilting | n | 1/4000s | 8.0/s | Y | Y | |
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one. |
One feature that is present on the GFX 100S, but is missing on the K-S1 is a top-level LCD. While being, of course, smaller than the rear screen, the control panel conveys some of the essential shooting information and can be convenient for quick and easy settings verification.
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 100S 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 100S 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 GFX 100S and the K-S1 write their files to SDXC cards. The GFX 100S features dual card slots, which can be very useful in case a memory card fails. In contrast, the K-S1 only has one slot. The GFX 100S supports UHS-II cards (on both slots), while the K-S1 can use UHS-I cards.
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 100S and Pentax K-S1 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
Camera Model |
Hotshoe Port |
Internal Mic / Speaker |
Microphone Port |
Headphone Port |
HDMI Port |
USB Port |
WiFi Support |
NFC Support |
Bluetooth Support |
||
---|---|---|---|---|---|---|---|---|---|---|---|
1. | Fujifilm GFX 100S | Y | stereo / mono | Y | Y | micro | 3.2 | Y | - | Y | |
2. | Pentax K-S1 | Y | stereo / mono | - | - | micro | 2.0 | - | - | - | |
3. | Canon R3 | Y | stereo / mono | Y | Y | micro | 3.2 | Y | - | Y | |
4. | Fujifilm GFX 50R | Y | stereo / mono | Y | Y | micro | 3.0 | Y | - | Y | |
5. | Fujifilm GFX 50S | Y | stereo / mono | Y | Y | micro | 3.0 | Y | - | - | |
6. | Fujifilm GFX 50S II | Y | stereo / mono | Y | Y | micro | 3.2 | Y | - | - | |
7. | Fujifilm GFX 100 | Y | stereo / mono | Y | Y | micro | 3.1 | Y | - | Y | |
8. | Fujifilm GFX 100 II | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | Y | |
9. | Hasselblad X1D II | Y | stereo / mono | Y | Y | - | 3.0 | Y | - | - | |
10. | Hasselblad X2D 100C | Y | stereo / mono | - | - | - | 3.2 | Y | - | - | |
11. | Leica SL2 | Y | stereo / mono | Y | Y | full | 3.1 | Y | - | Y | |
12. | Nikon D5300 | Y | stereo / mono | Y | - | mini | 2.0 | Y | - | - | |
13. | Nikon D5500 | Y | stereo / mono | Y | - | mini | 2.0 | Y | - | - | |
14. | Pentax K-500 | Y | mono / mono | - | - | - | 2.0 | - | - | - | |
15. | Pentax K-S2 | Y | mono / mono | Y | - | micro | 2.0 | Y | Y | - | |
16. | Sony A1 | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | Y | |
17. | Sony A68 | Y | stereo / mono | Y | - | micro | 2.0 | - | - | - |
It is notable that the GFX 100S has a microphone port, which is missing on the K-S1. Such an external microphone input can help to substantially improve the quality of audio recordings when a good external microphone is used.
Studio photographers will appreciate that the Fujifilm GFX 100S (unlike the K-S1) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
The GFX 100S is a recent model that features in the current product line-up of Fujifilm. In contrast, the K-S1 has been discontinued (but can be found pre-owned on ebay). As a replacement in the same line of cameras, the K-S1 was succeeded by the Pentax K-S2. Further information on the features and operation of the GFX 100S and K-S1 can be found, respectively, in the Fujifilm GFX 100S Manual (free pdf) or the online Pentax K-S1 Manual.
Review summary
So how do things add up? Which of the two cameras – the Fujifilm GFX 100S or the Pentax K-S1 – 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.
Reasons to prefer the Fujifilm GFX 100S:
- More detail: Offers more megapixels (101.8 vs 20MP) with a 121% higher linear resolution.
- High quality composites: Can combine several shots after pixel-shifting its sensor.
- 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 1080/30p).
- Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
- Better sound: Can connect to an external microphone for higher quality sound recording.
- Better sound control: Has a headphone port that enables audio monitoring while recording.
- More framing info: Has an electronic viewfinder that displays shooting data.
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.77x vs 0.63x).
- Easier setting verification: Features an LCD display on top to control shooting parameters.
- 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 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.
- Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
- Longer lasting: Can take more shots (460 versus 410) on a single battery charge.
- Easier travel charging: Can be conveniently charged via its USB port.
- Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
- More legacy lens friendly: Can take a broad range of non-native lenses via adapters.
- Faster data transfer: Supports a more advanced USB protocol (3.2 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.
- Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
- Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
- Faster buffer clearing: Supports a more advanced SD data transfer standard (UHS-II vs UHS-I).
- More modern: Reflects 6 years and 5 months of technical progress since the K-S1 launch.
Arguments in favor of the Pentax K-S1:
- Brighter framing: Features an optical viewfinder for clear, lag-free composition.
- Faster shutter: Has higher mechanical shutter speed (1/6000s vs 1/4000s) to freeze action.
- More compact: Is smaller (121x93mm vs 150x104mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight (by 342g or 38 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 (88 percent cheaper at launch).
- More heavily discounted: Has been around for much longer (launched in August 2014).
If the number of relative strengths (bullet points above) is taken as a guide, the GFX 100S is the clear winner of the match-up (30 : 7 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.
How about other alternatives? Do the specifications of the Fujifilm GFX 100S and the Pentax K-S1 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 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 GFX 100S and the K-S1 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 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.
Camera Model |
AP score |
CL score |
DCW score |
DPR score |
EPZ score |
PB score |
Camera Launch |
Launch Price (USD) |
Street Price |
||
---|---|---|---|---|---|---|---|---|---|---|---|
1. | Fujifilm GFX 100S | 5/5 | + + | 5/5 | 90/100 | 5/5 | 5/5 | Jan 2021 | 5,999 | amazon.com | |
2. | Pentax K-S1 | 4/5 | .. | .. | .. | 4.5/5 | 4/5 | Aug 2014 | 749 | ebay.com | |
3. | Canon R3 | 5/5 | o | 4.5/5 | .. | 5/5 | 4.5/5 | Sep 2021 | 5,999 | amazon.com | |
4. | Fujifilm GFX 50R | 5/5 | .. | 5/5 | 84/100 | 4.5/5 | 4.5/5 | Sep 2018 | 4,499 | ebay.com | |
5. | Fujifilm GFX 50S | .. | .. | 4.5/5 | 85/100 | 5/5 | 4.5/5 | Sep 2016 | 6,499 | ebay.com | |
6. | Fujifilm GFX 50S II | 5/5 | .. | 5/5 | 87/100 | .. | 5/5 | Sep 2021 | 3,999 | amazon.com | |
7. | Fujifilm GFX 100 | 4.5/5 | + + | 4.8/5 | 90/100 | 5/5 | 4.5/5 | May 2019 | 9,999 | ebay.com | |
8. | Fujifilm GFX 100 II | 5/5 | + | 5/5 | .. | .. | 4.5/5 | Sep 2023 | 7,499 | amazon.com | |
9. | Hasselblad X1D II | .. | .. | 4/5 | .. | 4/5 | 4/5 | Jun 2019 | 5,750 | ebay.com | |
10. | Hasselblad X2D 100C | 4/5 | .. | 5/5 | .. | .. | .. | Sep 2022 | 8,199 | amazon.com | |
11. | Leica SL2 | 4/5 | .. | 4.5/5 | .. | 4.5/5 | 4/5 | Nov 2019 | 5,999 | amazon.com | |
12. | Nikon D5300 | 4/5 | + + | .. | 79/100 | 4.5/5 | 4.5/5 | Oct 2013 | 799 | ebay.com | |
13. | Nikon D5500 | 5/5 | + | .. | 79/100 | 4.5/5 | 4.5/5 | Jan 2015 | 899 | ebay.com | |
14. | Pentax K-500 | .. | .. | .. | .. | 4.5/5 | 4.5/5 | Jun 2013 | 549 | ebay.com | |
15. | Pentax K-S2 | 4.5/5 | .. | .. | .. | 5/5 | 4.5/5 | Feb 2015 | 749 | ebay.com | |
16. | Sony A1 | 5/5 | o | 4.5/5 | 93/100 | 4.5/5 | 5/5 | Jan 2021 | 6,499 | amazon.com | |
17. | Sony A68 | 3/5 | .. | .. | .. | 4/5 | 4/5 | Nov 2015 | 699 | 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 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.
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. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.
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Specifications: Fujifilm GFX 100S vs Pentax K-S1
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 Model | Fujifilm GFX 100S | Pentax K-S1 |
---|---|---|
Camera Type | Mirrorless system camera | Digital single lens reflex |
Camera Lens | Fujifilm G mount lenses | Pentax K mount lenses |
Launch Date | January 2021 | August 2014 |
Launch Price | USD 5,999 | USD 749 |
Sensor Specs | Fujifilm GFX 100S | Pentax K-S1 |
Sensor Technology | BSI-CMOS | CMOS |
Sensor Format | Medium Format Sensor | APS-C Sensor |
Sensor Size | 43.8 x 32.9 mm | 23.5 x 15.6 mm |
Sensor Area | 1441.02 mm2 | 366.6 mm2 |
Sensor Diagonal | 54.8 mm | 28.2 mm |
Crop Factor | 0.79x | 1.5x |
Sensor Resolution | 101.8 Megapixels | 20 Megapixels |
Image Resolution | 11648 x 8736 pixels | 5472 x 3648 pixels |
Pixel Pitch | 3.76 μm | 4.28 μm |
Pixel Density | 7.06 MP/cm2 | 5.45 MP/cm2 |
Moiré control | no AA filter | no AA filter |
Movie Capability | 4K/30p Video | 1080/30p Video |
ISO Setting | 100 - 12,800 ISO | 100 - 51,200 ISO |
ISO Boost | 50 - 102,400 ISO | no Enhancement |
Image Processor | X-Processor 4 | PRIME MII |
DXO Sensor Quality (score) | .. | 78 |
DXO Color Depth (bits) | .. | 23.5 |
DXO Dynamic Range (EV) | .. | 13.0 |
DXO Low Light (ISO) | .. | 1061 |
Screen Specs | Fujifilm GFX 100S | Pentax K-S1 |
Viewfinder Type | Electronic viewfinder | Optical viewfinder |
Viewfinder Field of View | 100% | 100% |
Viewfinder Magnification | 0.77x | 0.63x |
Viewfinder Resolution | 3690k dots | |
Top-Level Screen | Control Panel | no Top Display |
LCD Framing | Live View | Live View |
Rear LCD Size | 3.2inch | 3.0inch |
LCD Resolution | 2360k dots | 921k dots |
LCD Attachment | Fully flexible screen | Fixed screen |
Touch Input | Touchscreen | no Touchscreen |
Shooting Specs | Fujifilm GFX 100S | Pentax K-S1 |
Focus System | On-Sensor Phase-detect | Phase-detect AF |
Manual Focusing Aid | Focus Peaking | Focus Peaking |
Max Shutter Speed (mechanical) | 1/4000s | 1/6000s |
Continuous Shooting | 5 shutter flaps/s | 5.4 shutter flaps/s |
Electronic Shutter | up to 1/16000s | no E-Shutter |
Time-Lapse Photography | Intervalometer built-in | no Intervalometer |
Image Stabilization | In-body stabilization | In-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 | Single card slot |
UHS card support | Dual UHS-II | UHS-I |
Connectivity Specs | Fujifilm GFX 100S | Pentax K-S1 |
External Flash | Hotshoe | Hotshoe |
Studio Flash | PC Sync socket | no PC Sync |
USB Connector | USB 3.2 | USB 2.0 |
HDMI Port | micro HDMI | micro HDMI |
Microphone Port | External MIC port | no MIC socket |
Headphone Socket | Headphone port | no Headphone port |
Wifi Support | Wifi built-in | no Wifi |
Bluetooth Support | Bluetooth built-in | no Bluetooth |
Body Specs | Fujifilm GFX 100S | Pentax K-S1 |
Environmental Sealing | Weathersealed body | not weather sealed |
Battery Type | Fujifilm NP-W235 | Pentax D-LI109 |
Battery Life (CIPA) | 460 shots per charge | 410 shots per charge |
In-Camera Charging | USB charging | no USB charging |
Body Dimensions |
150 x 104 x 87 mm (5.9 x 4.1 x 3.4 in) |
121 x 93 x 70 mm (4.8 x 3.7 x 2.8 in) |
Camera Weight | 900 g (31.7 oz) | 558 g (19.7 oz) |
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