X-t4 evaluation of Fuji no reflection camera

　　This article comes from Jiayou Online

　　 Since the launch of the X-H1 with built-in image stabilization (IBIS) in early 2018, Fuji has not launched its follow-up or other built-in image stabilization for two years until 2020. A mirrorless camera with IBIS function. As of February 2020, almost two years after the release of X-H1, Fuji finally released its second X-series mirrorless camera with built-in image stabilization (IBIS) function, but it is not the X-H1 that people think. The successor model of H1, but the new flagship X-T4 of the XT series.

　　 Fuji X- T4

　　X-T4 is the pinnacle of the X series, providing excellent performance whether it is shooting still pictures or videos. Fuji has developed a new shutter device for it, which can achieve fast, durable and quiet shooting effects, with 15 frames per second continuous shooting performance, and the shutter release delay is only 0.035 seconds. Although X-T4 still uses X-Trans CMOS 4 sensor and X-Processor 4 image processing engine, thanks to the development of new algorithms, X-T4 has the fastest autofocus performance in the history of X-series cameras. Users can Easily capture important moments that may have been missed before.

　　 Fuji X- T4

　　 In addition, X-T4 is Fuji’s second X-series mirrorless camera with built-in image stabilization (IBIS) after X-H1, which greatly improves the camera’s performance in still pictures and videos. The potential for shooting. Due to the use of new basic components, the fine layout of the shutter damping structure, and the newly developed gyro sensor, it can provide 5-axis 6.5-speed image stabilization performance when used with 18 of 29 XF/XC lenses. The detection accuracy is about 8 times that of the IBIS unit in the X-H1, and it is 30% smaller in size and 20% lighter than the X-H1 image stabilization device.

　　 Fuji X- T4

　　 At the same time, X-T4 also adds ETERNA bleaching effect based on the film simulation mode ETERNA supported by X-H1, which can simulate traditional film processing technology and create a unique low saturation and A high-contrast world. In terms of video, the X-T4 can record full HD high-speed video at 240P, generating up to 10 times the slow motion effect. IBIS body image stabilization and digital image stabilization (DIS) can also be used in combination in video mode, which will bring better image stability, which is especially important when shooting while walking.

　　 Fuji X-T4 main parameters:

　　Introduction to the overall appearance

　　 In the body design, the X-T4 continues the family design of the Fuji XT series. Compared with the previous generation X-T3, only some details have been modified. The X-T4 fuselage measurements are approximately 134.6 x 92.8 x 63.8mm, and the single fuselage weighs approximately 526g.

　　 Fuji X- Front of T4 fuselage

　　 On the front of the fuselage, the design of the Fuji X-T4 is basically the same as the previous generation X-T3, but there are three changes. One is the brand LOGO on the top of the bayonet. The X-T4 handles this area more smoothly, and the look and feel is more comfortable. The second is the position of the focus assist lamp, and the position of the X-T4 is higher. The third is the handle. Here, the handle of the X-T4 is more prominent, giving users a better grip.

　　 Fuji X- The back of the T4 fuselage

　　The configuration on the back is exactly the same as that of the X-T3. The EVF, rollover touch screen and focus joystick are all very easy to use. This whole set of button layout is used from X-T2 to X-T4, allowing users who have upgraded from previous models to seamlessly connect when using it. The only change is the way the display is folded, which will be discussed later.

　　 Fuji X- T4 top of the fuselage

　　 On the top of the fuselage, the X-T4 naturally continues the layout of the X-T3. However, there are some minor changes here. The Fn button on the top of the X-T4 has moved from the shutter dial and exposure compensation dial to the shutter side, making it easier to press than before.

　　 Fuji X- The bottom of the T4 fuselage

　　 The bottom of the X-T4 fuselage is designed with a speaker, a battery compartment, a tripod jack, and connection contacts for the enhanced vertical shooting handle.

　　Fuji X-T4 sides of the fuselage

　　 The right side of the X-T4 fuselage You can see the output port compartment and the memory card slot on the left.

　　 body detail design

　　Fuji X-T4 sensor

　　Fuji X-T4 continues to use a back-illuminated 26.1 million pixel X-TransTM CMOS 4 sensor and high-speed image processing engine X-Processor 4. The standard sensitivity is the lowest ISO 160, the highest ISO 12800, and can be extended to ISO 80-51200. In terms of focusing, based on the original performance, X-T4 adopts a new algorithm and phase detection autofocus processing function, which improves the autofocus performance to 0.02 seconds. Tracking autofocus performance has also been greatly improved. The face/eye autofocus performance has been significantly improved.

　　 Fuji X- T4 electronic viewfinder

　　X-T3 is equipped with a 3.69 million pixel high-resolution electronic viewfinder with a magnification of up to 0.75. It can be enhanced in three different ways at the same time: low light priority: allows you to see the subject clearly in low light; resolution priority: even the fine details of the subject can be displayed; frame rate priority: when shooting moving objects You can minimize the blur in the viewfinder.

　　 Fuji X- T4 side-folding touch LCD screen

In terms of display, X-T4 also chose the same rollover method as X-A7 and X-T200, which is no longer unique to Fuji on X-T3 Three-way folding design. The new roll-over screen is more friendly to video shooters, and it is also a design commonly used by many mirrorless cameras that focus on video shooting on the market.

　　 Fuji X- T4 external interface

　　 The right side of X-T4 is equipped with a microphone/headphone interface, a remote shutter release interface, an HDMI mini interface and a USB interface. The four interfaces are divided into two parts, each with a cover. On the X-T3, the four interfaces are put together.

　　 Fuji X- T4 memory card slot

For 　　 memory cards, X-T4 is equipped with a dual card slot design and supports UHS-II SD memory cards. The dual card slots are arranged up and down, because the X-T4’s remote shutter release port has been moved to the right side of the fuselage, and the space on the left side of the fuselage has become larger. The advantage of this arrangement is that it is more convenient to pick up the card.

　　 Fuji X- T4 battery

The improvement of 　　 battery is a highlight of this X-T4. X-T4 uses a brand new NP-W235 lithium battery in Fuji’s mirrorless camera for the first time. The battery’s battery life is 1.5 times that of the original NP-W126S battery. In normal mode, it can take 500 pictures per charge. 600 pictures can be taken in electric mode.

　　Continuous shooting test

　　X-T4 is equipped with an ultra-fast focal plane shutter. Thanks to the newly developed high-torque coreless DC motor, the shutter can be used in continuous shooting mode. Shooting at 15 frames per second, the shutter release delay is only 0.035 seconds, which is currently the highest continuous shooting performance of Fuji mirrorless cameras. The shutter unit also has twice the durability of the previous generation. The shutter has been used up to 300,000 times, and the shutter noise is reduced by about 30% compared with the X-T3. When the electronic shutter is used for shooting, the X-T4 can even shoot at a speed of up to 30 frames per second.

　　 continuous shooting photos GIF

　　 is matched with X-T4’s new autofocus algorithm, which makes the focusing speed up to 0.02 seconds, which is the fastest among mirrorless cameras with APS-C size sensor. The improved autofocus algorithm can also capture the subject with an excellent accuracy of more than 90%, which greatly increases our success rate of continuous shooting. Whether it is tracking AF, or face and eye AF performance has been greatly improved.

　　Anti-shake test

　　 As Fuji’s second mirrorless camera with built-in image stabilization (IBIS), the X-T4’s anti-shake performance has been further enhanced. Compared with the image stabilization unit used in X-H1, the new image stabilization unit adopted by it has been reduced by 30% in size and 20% in weight. The new unit uses magnets instead of springs, and is equipped with a high-performance gyro sensor. Compared with X-H1, the accuracy is increased by 8 times. This unit can perform more than 10,000 corrections per second, and can achieve image stabilization up to 6.5 stops among 18 of the 29 Fujinon XF lenses. Of course, just saying it is useless, we will verify it through actual shooting tests below.

　　 Focal length: 55mm ISO:400 Aperture: F2.8 Shutter: 1/80s

　　 In the test, we used X-T4 handheld to shoot, the lens was XF16-55mmF2.8 R LM WR, and 55mm telephoto end was used. This lens can achieve 5.5-stop image stabilization in Fuji’s official anti-shake compatibility table. The shooting was carried out in two times, once with the camera anti-shake turned off, and once with the camera anti-shake turned on, each time 10 shots were taken continuously, and then 100% of the focus center was taken for comparison. The shooting mode is M gear, the aperture is F4, ISO 160, and the shutter speed is 1/20s lower than the six gears of the safety shutter 1/80s. The picture above shows a test photo taken with the P gear, and you can use its parameters for reference.

　　 body protection Shake to close the test chart

　　Test image for anti-shake opening on the camera

　　 As you can see from the test diagram, X-T4 can barely use 1 or 2 photos when the camera is turned on. After anti-shake, the situation is different, and obvious changes can be seen through the test chart. Considering that the data we used in the test is higher than the official 5.5 files, it can be seen that the built-in image stabilization (IBIS) function of X-T4 is very strong. In addition, X-T4 also supports digital image stabilization (DIS), which can be combined with IBIS body stabilization in video mode, which will bring better image stability, which is especially important when shooting while walking.

　　Video shooting

　　 The video shooting performance of Fuji X-T4 has been further enhanced. The video can be 4K/60P 4:2:2 10bit or 4K/60P 4:2 via HDMI: 0 10bit recording to an external device. X-T4 supports H.264/MPEG-4 AVC and H.265/HEVC encoding formats. The latter provides a higher compression rate when recording 4K/60P 4:2:0 10 bit video at a bit rate of 200Mbps . However, in addition to the standard MOV video file format, X-T4 can now also choose MP4, which broadens the use of files.

　　X-T4 also added the F-Log view auxiliary function, It can correct low saturation/low contrast video when recording F-Log. The video is converted to display equivalent to BT.709, so that it is easier to get the correct exposure in video recording.

　　 In X-H1, Fuji has added video shooting The film simulation mode used is “ETERNA”, and this time in X-T4, Fuji has added a new film simulation mode “ETERNA bleaching effect” again. This effect can present a high-contrast effect while maintaining low color saturation, faithfully reproducing the film processing technology called “bleaching effect”, which has been sought after by many creative producers since the film photography era .

　　PROVIA/standard Pattern

　　ETERNA/ Movie mode

　　ETERNA Bleaching effect

　　ETERNA Bleaching effect video sample

　　 In addition, X-T4 also newly supports full HD 240P high-speed video. This will generate video files with up to 10x slow motion effects, adding another option for you when shooting videos.

　　10x slow motion Video sample

　　 sensitivity test

　　 Fuji X-T4 is equipped with APS-C size X-Trans CMOS 4 sensor and X-Processor 4 image processing engine, native sensitivity from ISO 160 -12800, can reach ISO 80-51200 after expansion. Let’s take a look at the actual sensitivity performance.

　　 Schematic diagram of interception area

　　 Fuji X- T4 sensitivity test table

　　 From the test picture, it can be seen that the Fuji X-T4 can maintain a relatively clean picture within ISO 3200, and more details are retained. When it rises above ISO 6400, a small amount begins to appear. The noise visible to the human eye increased until ISO 12800, but the loss of detail was not serious. In practical applications, the performance under IS0 3200 is acceptable. Therefore, in normal use, you can use the ISO setting of the AUTO file, and set the maximum value of the AUTO ISO to 3200, so that in most cases, the X-T4 can easily handle it.

　　 proofs appreciation

　　 Focal length: 36.5mm ISO: 160 Aperture: F2.8 Shutter: 1/6400s

　　 Focal length: 55mm ISO: 160 Aperture: F2.8 Shutter: 1/850s

　　 Focal length: 55mm ISO: 160 Aperture: F2.8 Shutter: 1/2500s

　　 Focal length: 55mm ISO :160 Aperture: F2.8 Shutter: 1/2000s

　　 Focal length: 29.2mm ISO: 160 Aperture: F2.8 Shutter: 1/210s

　　 Focal length: 55mm ISO: 160 Aperture: F2.8 Shutter: 1/1700s

　　 Focal length: 55mm ISO: 160 Aperture: F2.8 Shutter: 1/1400s

　　 Focal length: 55mm ISO: 160 Aperture: F2.8 Shutter: 1/ 450s

　　Edit summary

　　As the new flagship of Fuji XT series mirrorless cameras, X-T4 has high performance parameters and complete functions. I remember that when I evaluated the X-T3, I wrote about its shortcomings without body anti-shake, and the X-H1 was a battery life issue. X-T4 is very good on the basis of X-T3, adding the most characteristic functions in the XH series, and integrating them together to solve the problem of X-T3, and at the same time solve the problem of battery life by adopting a new battery, thereby Created this Fuji’s most perfect X-series mirrorless camera.

　　 Fuji X- T4

　　 This Fuji X-T4 can be said to be a combination of the advantages of the Fuji XT series and the XH series. It is difficult to find obvious problems and shortcomings in it. Strictly speaking, since it is equipped with body anti-shake, there is a high-resolution mode, which can solve the problem of insufficient pixels of the APS-C frame. GFX100, which is also equipped with body anti-shake, has announced that it is developing new firmware that supports pixel shift technology. After that, it should not be difficult to port to X-T4. Let us look forward to it.

　　 Advantages:

　　X-Trans™ CMOS 4 sensor

　　X-Processor 4 high-speed image processor

　　Built-in image stabilization function

0.02 second auto focus and mechanical shutter 15 frames/second continuous shooting

　　New film simulation “ETERNA bleaching effect”

　　Support 4K/60P 4:2:2 10bit video output

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　　Support F-Log view auxiliary function

　　Using new lithium battery, single battery life is up to 600 sheets