Fujifilm X-T4 vs Sony A9 II
The Fujifilm X-T4 and the Sony Alpha A9 II are two digital cameras that were announced, respectively, in February 2020 and October 2019. Both the X-T4 and the A9 II are mirrorless interchangeable lens cameras that are based on an APS-C (X-T4) and a full frame (A9 II) sensor. The Fujifilm has a resolution of 26 megapixels, whereas the Sony provides 24 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.
|Fujifilm X-T4||Sony A9 II|
|Mirrorless system camera||Mirrorless system camera|
|Fujifilm X mount lenses||Sony E mount lenses|
|26 MP, APS-C Sensor||24 MP, Full Frame Sensor|
|4K/60p Video||4K/30p Video|
|ISO 160-12800 (80-51200)||ISO 100-51200 (50-204800)|
|Electronic viewfinder (3690k dots)||Electronic viewfinder (3686k dots)|
|3.0" LCD, 1620k dots||3.0" LCD, 1440k dots|
|Swivel touchscreen||Tilting touchscreen|
|15 shutter flaps per second||10 shutter flaps per second|
|In-body stabilization||In-body stabilization|
|Weathersealed body||Weathersealed body|
|500 shots per battery charge||690 shots per battery charge|
|135 x 93 x 64 mm, 607 g||129 x 96 x 76 mm, 678 g|
Going beyond this snapshot of core features and characteristics, what are the differences between the Fujifilm X-T4 and the Sony Alpha A9 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.
The side-by-side display below illustrates the physical size and weight of the Fujifilm X-T4 and the Sony A9 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 measures are rounded to the nearest millimeter.
The X-T4 can be obtained in two different colors (black, silver), while the A9 II 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 Sony A9 II is somewhat smaller (1 percent) than the Fujifilm X-T4. However, the A9 II is markedly heavier (12 percent) than the X-T4. 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. A larger imaging sensor will tend to go along with bigger and heavier lenses, although exceptions exist. You can compare the optics available for the two cameras in the Fujinon X Lens Catalog (X-T4) and the Sony FE Lens Catalog (A9 II). Mirrorless cameras, such as the two under consideration, have the additional advantage of having a short flange to focal plane distance, which makes it possible to mount many lenses from other systems onto the camera via adapters.
The battery packs of both cameras can be charged via USB, which can be very convenient when travelling.
The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. If you would like to visualize and compare a different camera combination, just use the right or left arrows in the table to switch to the respective camera. Alternatively, you can also navigate to the CAM-parator app and make your selection from the full list of cameras there.
|Fujifilm X-T4»||135 mm||93 mm||64 mm||607 g||500||Y||Feb 2020||1,699||Fujifilm X-T4|
|Sony A9 II«||129 mm||96 mm||76 mm||678 g||690||Y||Oct 2019||4,499||Sony A9 II|
|Fujifilm X100V« »||128 mm||75 mm||53 mm||478 g||420||Y||Feb 2020||1,399||Fujifilm X100V|
|Fujifilm X-Pro3« »||141 mm||83 mm||46 mm||497 g||440||Y||Oct 2019||1,799||Fujifilm X-Pro3|
|Fujifilm X-T3« »||133 mm||93 mm||59 mm||539 g||390||Y||Sep 2018||1,499||Fujifilm X-T3|
|Fujifilm X-H1« »||140 mm||97 mm||86 mm||673 g||310||Y||Feb 2018||1,899||Fujifilm X-H1|
|Fujifilm X-Pro2« »||141 mm||83 mm||46 mm||495 g||350||Y||Jan 2016||1,699||Fujifilm X-Pro2|
|Fujifilm X-T2« »||133 mm||92 mm||49 mm||507 g||340||Y||Jul 2016||1,599||Fujifilm X-T2|
|Nikon Z6« »||134 mm||101 mm||67 mm||675 g||310||Y||Aug 2018||1,999||Nikon Z6|
|Sony A6600« »||120 mm||67 mm||69 mm||503 g||810||Y||Aug 2019||1,399||Sony A6600|
|Sony A7 III« »||127 mm||96 mm||74 mm||650 g||610||Y||Feb 2018||1,999||Sony A7 III|
|Sony A9« »||127 mm||96 mm||63 mm||673 g||650||Y||Apr 2017||4,499||Sony A9|
|Sony A7S II« »||127 mm||96 mm||60 mm||627 g||370||Y||Sep 2015||2,999||Sony A7S II|
|Sony A7 II« »||127 mm||96 mm||60 mm||599 g||350||Y||Nov 2014||1,999||Sony A7 II|
|Sony A99« »||147 mm||111 mm||78 mm||812 g||500||Y||Sep 2012||2,799||Sony A99|
|Note: Measurements and pricing do not include easily detachable parts, such as interchangeable lenses or optional viewfinders.|
Any camera decision will naturally be influenced heavily by the price. 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 X-T4 was launched at a markedly lower price (by 62 percent) than the A9 II, 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.
The size of the sensor inside a digital camera is one of the key determinants 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. 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 X-T4 features an APS-C sensor and the Sony A9 II a full frame sensor. The sensor area in the A9 II is 131 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.5 and 1.0. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
Despite having a smaller sensor, the Fujifilm X-T4 offers a higher resolution of 26 megapixels, compared with 24 MP of the Sony A9 II. This megapixels advantage comes at the cost of a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 3.76μm versus 5.94μm for the A9 II). However, it should be noted that the X-T4 is a somewhat more recent model (by 4 months) than the A9 II, and its sensor might have benefitted from technological advances during this time that partly offset its pixel-size disadvantage. Coming back to sensor resolution, it should be mentioned that the X-T4 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The Fujifilm X-T4 has a native sensitivity range from ISO 160 to ISO 12800, which can be extended to ISO 80-51200. The corresponding ISO settings for the Sony Alpha A9 II are ISO 100 to ISO 51200, with the possibility to increase the ISO range to 50-204800.
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 adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.
|Fujifilm X-T4||APS-C||26.0||6240||4160||4K/60p||..||..||..||..||Fujifilm X-T4|
|Sony A9 II||Full Frame||24.0||6000||4000||4K/30p||25.0||14.0||3434||93||Sony A9 II|
|Fujifilm X100V||APS-C||26.0||6240||4160||4K/30p||..||..||..||..||Fujifilm X100V|
|Fujifilm X-Pro3||APS-C||26.0||6240||4160||4K/30p||..||..||..||..||Fujifilm X-Pro3|
|Fujifilm X-T3||APS-C||26.0||6240||4160||4K/60p||..||..||..||..||Fujifilm X-T3|
|Fujifilm X-H1||APS-C||24.0||6000||4000||4K/30p||..||..||..||..||Fujifilm X-H1|
|Fujifilm X-Pro2||APS-C||24.0||6000||4000||1080/60p||..||..||..||..||Fujifilm X-Pro2|
|Fujifilm X-T2||APS-C||24.0||6000||4000||4K/30p||..||..||..||..||Fujifilm X-T2|
|Nikon Z6||Full Frame||24.3||6048||4024||4K/30p||25.3||14.3||3299||95||Nikon Z6|
|Sony A6600||APS-C||24.0||6000||4000||4K/30p||23.8||13.4||1497||82||Sony A6600|
|Sony A7 III||Full Frame||24.0||6000||4000||4K/30p||25.0||14.7||3730||96||Sony A7 III|
|Sony A9||Full Frame||24.0||6000||4000||4K/30p||24.9||13.3||3517||92||Sony A9|
|Sony A7S II||Full Frame||12.0||4240||2832||4K/30p||23.6||13.3||2993||85||Sony A7S II|
|Sony A7 II||Full Frame||24.0||6000||4000||1080/60p||24.9||13.6||2449||90||Sony A7 II|
|Sony A99||Full Frame||24.0||6000||4000||1080/60p||25.0||14.0||1555||89||Sony A99|
Many modern cameras are not only capable of taking still images, but also of capturing video footage. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, but the X-T4 provides a higher frame rate than the A9 II. It can shoot video footage at 4K/60p, while the Sony is limited to 4K/30p.
Apart from body and sensor, cameras can and do differ across a variety of features. The two cameras under consideration are similar with respect to both having an electronic viewfinder. However, the one in the X-T4 offers a slightly higher resolution than the one in the A9 II (3690k vs 3686k dots). The following table reports on some other key feature differences and similarities of the Fujifilm X-T4, the Sony A9 II, and comparable cameras.
|Fujifilm X-T4||3690||n||3.0||1620||swivel||Y||1/8000s||15.0||n||Y||Fujifilm X-T4|
|Sony A9 II||3686||n||3.0||1440||tilting||Y||1/8000s||10.0||n||Y||Sony A9 II|
|Fujifilm X100V||3690||n||3.0||1620||tilting||Y||1/4000s||11.0||Y||n||Fujifilm X100V|
|Fujifilm X-Pro3||3690||n||3.0||1620||tilting||Y||1/8000s||8.0||n||n||Fujifilm X-Pro3|
|Fujifilm X-T3||3690||n||3.0||1040||tilting||Y||1/8000s||11.0||n||n||Fujifilm X-T3|
|Fujifilm X-H1||3690||Y||3.0||1040||full-flex||Y||1/8000s||14.0||n||Y||Fujifilm X-H1|
|Fujifilm X-Pro2||2360||n||3.0||1620||fixed||n||1/8000s||8.0||n||n||Fujifilm X-Pro2|
|Fujifilm X-T2||2360||n||3.0||1040||tilting||n||1/8000s||14.0||n||n||Fujifilm X-T2|
|Nikon Z6||3690||Y||3.2||2100||tilting||Y||1/8000s||12.0||n||Y||Nikon Z6|
|Sony A6600||2359||n||3.0||922||tilting||Y||1/4000s||11.0||n||Y||Sony A6600|
|Sony A7 III||2359||n||3.0||922||tilting||Y||1/8000s||10.0||n||Y||Sony A7 III|
|Sony A9||3686||n||3.0||1440||tilting||Y||1/8000s||20.0||n||Y||Sony A9|
|Sony A7S II||2400||n||3.0||1229||tilting||n||1/8000s||5.0||n||Y||Sony A7S II|
|Sony A7 II||2400||n||3.0||1230||tilting||n||1/8000s||5.0||n||Y||Sony A7 II|
|Sony A99||2359||Y||3.0||1229||full-flex||n||1/8000s||6.0||n||Y||Sony A99|
The reported shutter speed information refers to the use of the mechanical shutter. Yet, some cameras only have an electronic shutter, while others have an electronic shutter in addition to a mechanical one. In fact, both cameras under consideration feature an electronic shutter, which makes completely silent shooting possible. However, this mode is less suitable for photographing moving objects (risk of rolling shutter) or shooting under artificial light sources (risk of flickering).
The Fujifilm X-T4 and the Sony A9 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 X-T4 and the A9 II write their files to SDXC cards. Both cameras feature dual card slots, which can be very useful in case a memory card fails. Moreover, both the X-T4 and the A9 II support UHS-II cards, which provide for Ultra High Speed data transfer of up to 312 MB/s, on both slots.
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 X-T4 and Sony Alpha A9 II and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
|Fujifilm X-T4||Y||stereo||mono||Y||-||micro||3.1||Y||-||Y||Fujifilm X-T4|
|Sony A9 II||Y||stereo||mono||Y||Y||micro||3.1||Y||Y||Y||Sony A9 II|
|Fujifilm X100V||Y||stereo||mono||Y||-||micro||3.1||Y||-||Y||Fujifilm X100V|
|Fujifilm X-Pro3||Y||stereo||mono||Y||-||none||3.1||Y||-||Y||Fujifilm X-Pro3|
|Fujifilm X-T3||Y||stereo||mono||Y||Y||micro||3.1||Y||-||Y||Fujifilm X-T3|
|Fujifilm X-H1||Y||stereo||mono||Y||-||micro||3.0||Y||-||-||Fujifilm X-H1|
|Fujifilm X-Pro2||Y||stereo||mono||Y||-||micro||2.0||Y||-||-||Fujifilm X-Pro2|
|Fujifilm X-T2||Y||stereo||mono||Y||-||micro||3.0||Y||-||-||Fujifilm X-T2|
|Nikon Z6||Y||stereo||mono||Y||Y||micro||3.1||Y||-||Y||Nikon Z6|
|Sony A6600||Y||stereo||mono||Y||Y||YES||2.0||Y||Y||Y||Sony A6600|
|Sony A7 III||Y||stereo||mono||Y||Y||micro||3.1||Y||Y||Y||Sony A7 III|
|Sony A9||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||Y||Sony A9|
|Sony A7S II||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||-||Sony A7S II|
|Sony A7 II||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||-||Sony A7 II|
|Sony A99||Y||stereo||mono||Y||Y||mini||2.0||-||-||-||Sony A99|
It is notable that the A9 II has a headphone jack, which makes it possible to attach external headphones and monitor the quality of sound during the recording process. The X-T4 lacks such a headphone port.
Both cameras feature a PC Sync terminal to control professional strobe lights, which will be appreciated by studio photographers.
Both the X-T4 and the A9 II are recent models that are part of the current product line-up. The A9 II replaced the earlier Sony A9, while the X-T4 followed on from the Fujifilm X-T3. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Fujifilm and Sony websites.
So how do things add up? Is the Fujifilm X-T4 better than the Sony A9 II or vice versa? The listing below highlights the relative strengths of the two models.
Reasons to prefer the Fujifilm X-T4:
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- Better video: Provides higher movie framerates (4K/60p versus 4K/30p).
- More detailed LCD: Has a higher resolution rear screen (1620k vs 1440k dots).
- More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
- More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
- Faster burst: Shoots at higher frequency (15 vs 10 flaps/sec) to capture the decisive moment.
- Less heavy: Is lighter (by 71g or 10 percent) and hence easier to carry around.
- More affordable: Was introduced into a lower priced category (62 percent cheaper at launch).
- More modern: Is somewhat more recent (announced 4 months after the A9 II).
Arguments in favor of the Sony Alpha A9 II:
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- 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 sound control: Has a headphone port that enables audio monitoring while recording.
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.78x vs 0.75x).
- Longer lasting: Gets more shots (690 versus 500) out of a single battery charge.
- Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
- More heavily discounted: Has been on the market for longer (launched in October 2019).
If the count of relative strengths (bullet points above) is taken as a measure, the A9 II comes out slightly ahead of the X-T4 (10 : 9 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 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.
How about other alternatives? Do the specifications of the Fujifilm X-T4 and the Sony A9 II place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera listing whether the two cameras rank among the cream of the crop.
In any case, while the specs-based evaluation of cameras can be instructive in revealing their potential as photographic tools, it remains incomplete and does no justice, for example, to the way the X-T4 or the A9 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.
This is why hands-on reviews by experts are important. The following table reports the overall ratings of the cameras as published by some of the major camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, and photographyblog). 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.
Care should be taken when interpreting the review scores above, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. Thus, a score needs to be put into the context of the launch date and the launch price 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.
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. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.
- Canon 77D vs Fujifilm X-T4
- Fujifilm GFX 50S vs Sony A9 II
- Fujifilm X-A3 vs Fujifilm X-T4
- Fujifilm X-E3 vs Sony A9 II
- Fujifilm X-H1 vs Fujifilm X-T4
- Fujifilm X-T10 vs Fujifilm X-T4
- Fujifilm X-T4 vs Nikon D3200
- Fujifilm X-T4 vs Nikon D3300
- Fujifilm X-T4 vs Olympus E-M1 II
- Fujifilm X-T4 vs Olympus E-PL9
- Fujifilm X-T4 vs Pentax K-1 II
- Sony A6100 vs Sony A9 II
Specifications: Fujifilm X-T4 vs Sony A9 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 Model||Fujifilm X-T4||Sony A9 II|
|Camera Type||Mirrorless system camera||Mirrorless system camera|
|Camera Lens||Fujifilm X mount lenses||Sony E mount lenses|
|Launch Date||February 2020||October 2019|
|Launch Price||USD 1699||USD 4499|
|Sensor Specs||Fujifilm X-T4||Sony A9 II|
|Sensor Format||APS-C Sensor||Full Frame Sensor|
|Sensor Size||23.5 x 15.6 mm||35.6 x 23.8 mm|
|Sensor Area||366.6 mm2||847.28 mm2|
|Sensor Diagonal||28.2 mm||42.8 mm|
|Sensor Resolution||26 Megapixels||24 Megapixels|
|Image Resolution||6240 x 4160 pixels||6000 x 4000 pixels|
|Pixel Pitch||3.76 μm||5.94 μm|
|Pixel Density||7.08 MP/cm2||2.83 MP/cm2|
|Moiré control||no AA filter||Anti-Alias filter|
|Movie Capability||4K/60p Video||4K/30p Video|
|ISO Setting||160-12800 ISO||100-51200 ISO|
|ISO Boost||80-51200 ISO||50-204800 ISO|
|Image Processor||X-Processor 4||BIONZ X|
|DXO Sensor Quality (score)||..||93|
|DXO Color Depth (bits)||..||25.0|
|DXO Dynamic Range (EV)||..||14.0|
|DXO Low Light (ISO)||..||3434|
|Screen Specs||Fujifilm X-T4||Sony A9 II|
|Viewfinder Type||Electronic viewfinder||Electronic viewfinder|
|Viewfinder Field of View||100%||100%|
|Viewfinder Resolution||3690k dots||3686k dots|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0 inch||3.0 inch|
|LCD Resolution||1620k dots||1440k dots|
|LCD Attachment||Swivel screen||Tilting screen|
|Shooting Specs||Fujifilm X-T4||Sony A9 II|
|Focus System||On-Sensor Phase-detect||On-Sensor Phase-detect|
|Manual Focusing Aid||Focus Peaking||Focus Peaking|
|Max Shutter Speed (mechanical)||1/8000/s||1/8000/s|
|Continuous Shooting||15 shutter flaps/s||10 shutter flaps/s|
|Shutter Life Expectancy||300 000 actuations||500 000 actuations|
|Electronic Shutter||up to 1/32000s||up to 1/32000s|
|Time-Lapse Photography||Intervalometer built-in||Intervalometer built-in|
|Image Stabilization||In-body stabilization||In-body stabilization|
|Fill Flash||no On-Board Flash||no On-Board Flash|
|Storage Medium||SDXC cards||SDXC cards|
|Second Storage Option||Dual card slots||Dual card slots|
|UHS card support||Dual UHS-II||Dual UHS-II|
|Connectivity Specs||Fujifilm X-T4||Sony A9 II|
|Studio Flash||PC Sync socket||PC Sync socket|
|USB Connector||USB 3.1||USB 3.1|
|HDMI Port||micro HDMI||micro HDMI|
|Microphone Port||External MIC port||External MIC port|
|Headphone Socket||no Headphone port||Headphone port|
|Wifi Support||Wifi built-in||Wifi built-in|
|Near-Field Communication||no NFC||NFC built-in|
|Bluetooth Support||Bluetooth built-in||Bluetooth built-in|
|Body Specs||Fujifilm X-T4||Sony A9 II|
|Environmental Sealing||Weathersealed body||Weathersealed body|
|Battery Life (CIPA)||500 shots per charge||690 shots per charge|
|In-Camera Charging||USB charging||USB charging|
135 x 93 x 64 mm
(5.3 x 3.7 x 2.5 in)
129 x 96 x 76 mm
(5.1 x 3.8 x 3.0 in)
|Camera Weight||607 g (21.4 oz)||678 g (23.9 oz)|
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