Sony A6400 vs Fujifilm X-T20

The Sony Alpha A6400 and the Fujifilm X-T20 are two digital cameras that were announced, respectively, in January 2019 and January 2017. Both the A6400 and the X-T20 are mirrorless interchangeable lens cameras that are equipped with an APS-C sensor. Both cameras offer a resolution of 24 megapixels.

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

Headline Specifications

Sony A6400		Fujifilm X-T20
Mirrorless system camera		Mirrorless system camera
Sony E mount lenses		Fujifilm X mount lenses
24 MP – APS-C sensor		24 MP – APS-C sensor
4K/30p Video		4K/30p Video
ISO 100-32,000 (100 - 102,400)		ISO 200-12,800 (100 - 51,200)
Electronic viewfinder (2359k dots)		Electronic viewfinder (2360k dots)
3.0" LCD – 922k dots		3.0" LCD – 1040k dots
Tilting touchscreen		Tilting touchscreen
11 shutter flaps per second		8 shutter flaps per second
Weathersealed body		not weather sealed
410 shots per battery charge		350 shots per battery charge
120 x 67 x 50 mm, 403 g		118 x 83 x 41 mm, 383 g

Check A6400 price at
amazon.com
Check X-T20 offers at
ebay.com

Going beyond this snapshot of core features and characteristics, what are the differences between the Sony Alpha A6400 and the Fujifilm X-T20? 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 Sony A6400 and the Fujifilm X-T20 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 size dimensions are rounded to the nearest millimeter.

The X-T20 can be obtained in two different colors (black, silver), while the A6400 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 Fujifilm X-T20 is notably larger (22 percent) than the Sony A6400. However, the X-T20 is markedly lighter (5 percent) than the A6400. It is worth mentioning in this context that the A6400 is splash and dust resistant, while the X-T20 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. Yet, since both cameras are based around an APS-C sensor, their respective lenses will tend to have similar dimensions and heft. You can compare the optics available for the two cameras in the Sony E-Mount Lens Catalog (A6400) and the Fujinon X Lens Catalog (X-T20). 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.

Concerning battery life, the A6400 gets 410 shots out of its Sony NP-FW50 battery, while the X-T20 can take 350 images on a single charge of its Fujifilm NP-W126S power pack. 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. In case you want to display and compare another camera duo, you can use the CAM-parator app to select your camera combination among a large number of options.

Body Specifications

		Camera Model	Camera Width	Camera Height	Camera Depth	Camera Weight	Battery Life	Weather Sealing	Camera Launch	Launch Price	Street Price
1.		Sony A6400	120 mm	67 mm	50 mm	403 g	410	Y	Jan 2019	US$ 899	amazon.com
2.		Fujifilm X-T20	118 mm	83 mm	41 mm	383 g	350	n	Jan 2017	US$ 899	ebay.com
3.		Fujifilm X-A5	117 mm	68 mm	40 mm	361 g	450	n	Jan 2018	US$ 399	ebay.com
4.		Fujifilm X-E3	121 mm	74 mm	43 mm	337 g	350	n	Sep 2017	US$ 899	ebay.com
5.		Fujifilm X-T10	118 mm	83 mm	41 mm	381 g	350	n	May 2015	US$ 799	ebay.com
6.		Fujifilm X-T30	118 mm	83 mm	47 mm	383 g	380	n	Feb 2019	US$ 899	ebay.com
7.		Fujifilm X-T100	121 mm	83 mm	47 mm	448 g	430	n	May 2018	US$ 599	ebay.com
8.		Nikon D5300	125 mm	98 mm	76 mm	480 g	600	n	Oct 2013	US$ 799	ebay.com
9.		Sony A3000	128 mm	91 mm	85 mm	411 g	470	n	Aug 2013	US$ 329	ebay.com
10.		Sony A5100	110 mm	63 mm	36 mm	283 g	400	n	Aug 2014	US$ 549	ebay.com
11.		Sony A6000	120 mm	67 mm	45 mm	344 g	360	n	Feb 2014	US$ 599	ebay.com
12.		Sony A6100	120 mm	67 mm	59 mm	396 g	420	n	Aug 2019	US$ 749	ebay.com
13.		Sony A6300	120 mm	67 mm	49 mm	404 g	400	Y	Feb 2016	US$ 999	ebay.com
14.		Sony NEX-5R	111 mm	59 mm	39 mm	276 g	330	n	Aug 2012	US$ 749	ebay.com
15.		Sony NEX-6	120 mm	67 mm	43 mm	345 g	360	n	Sep 2012	US$ 999	ebay.com
16.		Sony NEX-7	120 mm	67 mm	43 mm	400 g	430	n	Aug 2011	US$ 1 349	ebay.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
Convert to Imperial

Any camera decision will naturally be influenced heavily by the price. 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 two cameras under review were launched at the same price and fall into the same 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.

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 generally have larger individual pixels that offer better low-light sensitivity, provide wider dynamic range, and have richer color-depth than smaller pixels in a sensor of the same technological generation. Moreover, a large sensor camera will give the photographer more control over depth-of-field in the image and, thus, the ability to better isolate a subject from the background. On the downside, larger sensors tend to be more expensive and lead to bigger and heavier cameras and lenses.

Both cameras under consideration feature an APS-C sensor, but their sensors differ slightly in size. They nevertheless have the same format factor of 1.5. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Even though the X-T20 has a slightly larger sensor, both cameras offer the same resolution of 24 megapixels. This implies that the X-T20 has a lower pixel density and marginally larger individual pixels (with a pixel pitch of 3.92μm versus 3.91μm for the A6400), which gives it a potential advantage in terms of light gathering capacity. It should, however, be noted that the A6400 is a somewhat more recent model (by 1 year and 11 months) than the X-T20, and its sensor might have benefitted from technological advances during this time that at least partly compensate for the smaller pixel size. Coming back to sensor resolution, it should be mentioned that the X-T20 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The Sony Alpha A6400 has a native sensitivity range from ISO 100 to ISO 32000, which can be extended to ISO 100-102400. The corresponding ISO settings for the Fujifilm X-T20 are ISO 200 to ISO 12800, with the possibility to increase the ISO range to 100-51200.

Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors. Like most digital cameras, the A6400 uses a Bayer filter for capturing RGB colors on a square grid of photosensors. In contrast, the X-T20 employs a more randomized X-Trans layout of photosites, which according to Fujifilm helps to minimize moiré.

Consistent information on actual sensor performance is available from DXO Mark for many cameras. 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.

Sensor Characteristics

		Camera Model	Sensor Class	Resolution (MP)	Horiz. Pixels	Vert. Pixels	Video Format	DXO Portrait	DXO Landscape	DXO Sports	DXO Overall
1.		Sony A6400	APS-C	24.0	6000	4000	4K/30p	24.0	13.6	1431	83
2.		Fujifilm X-T20	APS-C	24.0	6000	4000	4K/30p	23.9	13.2	1704	81
3.		Fujifilm X-A5	APS-C	24.0	6000	4000	4K/15p	24.0	13.3	1800	82
4.		Fujifilm X-E3	APS-C	24.0	6000	4000	4K/30p	23.9	13.3	1764	82
5.		Fujifilm X-T10	APS-C	16.0	4896	3264	1080/60p	23.7	12.9	1546	79
6.		Fujifilm X-T30	APS-C	26.0	6240	4160	4K/30p	24.1	13.5	1895	83
7.		Fujifilm X-T100	APS-C	24.0	6000	4000	4K/15p	24.0	13.4	1829	83
8.		Nikon D5300	APS-C	24.0	6000	4000	1080/60p	24.0	13.9	1338	83
9.		Sony A3000	APS-C	19.8	5456	3632	1080/60i	23.7	12.8	1068	78
10.		Sony A5100	APS-C	24.0	6000	4000	1080/60p	23.8	12.7	1347	80
11.		Sony A6000	APS-C	24.0	6000	4000	1080/60p	24.1	13.1	1347	82
12.		Sony A6100	APS-C	24.0	6000	4000	4K/30p	24.1	13.6	1947	84
13.		Sony A6300	APS-C	24.0	6000	4000	4K/30p	24.4	13.7	1437	85
14.		Sony NEX-5R	APS-C	16.0	4912	3264	1080/60i	23.7	13.1	910	78
15.		Sony NEX-6	APS-C	16.0	4912	3264	1080/60i	23.7	13.1	1018	78
16.		Sony NEX-7	APS-C	24.0	6000	4000	1080/60i	24.1	13.4	1016	81
Note: DXO values in italics represent estimates based on sensor size and age.

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, and both provide the same movie specifications (4K/30p).

Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. The two cameras under review are similar with respect to both having an electronic viewfinder. However, the one in the X-T20 offers a slightly higher resolution than the one in the A6400 (2360k vs 2359k dots). The table below summarizes some of the other core capabilities of the Sony A6400 and Fujifilm X-T20 in connection with corresponding information for a sample of similar cameras.

Core Features

		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.		Sony A6400	2359	n	3.0 / 922	tilting	Y	1/4000s	11.0/s	Y	n
2.		Fujifilm X-T20	2360	n	3.0 / 1040	tilting	Y	1/4000s	8.0/s	Y	n
3.		Fujifilm X-A5	none	n	3.0 / 1040	tilting	Y	1/4000s	6.0/s	Y	n
4.		Fujifilm X-E3	2360	n	3.0 / 1040	fixed	Y	1/4000s	8.0/s	n	n
5.		Fujifilm X-T10	2360	n	3.0 / 920	tilting	n	1/4000s	8.0/s	Y	n
6.		Fujifilm X-T30	2360	n	3.0 / 1040	tilting	Y	1/4000s	8.0/s	Y	n
7.		Fujifilm X-T100	2360	n	3.0 / 1040	swivel	Y	1/4000s	6.0/s	Y	n
8.		Nikon D5300	optical	n	3.2 / 1037	swivel	n	1/4000s	5.0/s	Y	n
9.		Sony A3000	202	n	3.0 / 230	fixed	n	1/4000s	2.5/s	Y	n
10.		Sony A5100	none	n	3.0 / 922	tilting	Y	1/4000s	6.0/s	Y	n
11.		Sony A6000	1440	n	3.0 / 922	tilting	n	1/4000s	11.0/s	Y	n
12.		Sony A6100	1440	n	3.0 / 922	tilting	Y	1/4000s	11.0/s	Y	n
13.		Sony A6300	2359	n	3.0 / 922	tilting	n	1/4000s	11.0/s	Y	n
14.		Sony NEX-5R	optional	n	3.0 / 920	tilting	Y	1/4000s	10.0/s	n	n
15.		Sony NEX-6	2359	n	3.0 / 921	tilting	n	1/4000s	10.0/s	Y	n
16.		Sony NEX-7	2359	n	3.0 / 921	tilting	n	1/4000s	10.0/s	Y	n
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

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-T20 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.

The A6400 writes its imaging data to SDXC or Memory Stick PRO Duo cards, while the X-T20 uses SDXC cards. Both cameras can use UHS-I cards, which provide for Ultra High Speed data transfer of up to 104 MB/s.

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 Sony Alpha A6400 and Fujifilm X-T20 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

Input-Output Connections

		Camera Model	Hotshoe Port	Internal Mic / Speaker	Microphone Port	Headphone Port	HDMI Port	USB Port	WiFi Support	NFC Support	Bluetooth Support
1.		Sony A6400	Y	stereo / mono	Y	-	micro	2.0	Y	Y	Y
2.		Fujifilm X-T20	Y	stereo / mono	Y	-	micro	2.0	Y	-	-
3.		Fujifilm X-A5	Y	stereo / mono	Y	-	micro	2.0	Y	-	Y
4.		Fujifilm X-E3	Y	stereo / mono	Y	-	micro	2.0	Y	-	Y
5.		Fujifilm X-T10	Y	stereo / mono	Y	-	micro	2.0	Y	-	-
6.		Fujifilm X-T30	Y	stereo / mono	Y	-	micro	3.1	Y	-	Y
7.		Fujifilm X-T100	Y	stereo / mono	Y	-	micro	2.0	Y	-	Y
8.		Nikon D5300	Y	stereo / mono	Y	-	mini	2.0	Y	-	-
9.		Sony A3000	Y	stereo / mono	-	-	mini	2.0	-	-	-
10.		Sony A5100	-	stereo / mono	-	-	micro	2.0	Y	Y	-
11.		Sony A6000	Y	stereo / mono	-	-	micro	2.0	Y	Y	-
12.		Sony A6100	Y	stereo / mono	Y	-	micro	2.0	Y	Y	Y
13.		Sony A6300	Y	stereo / mono	Y	-	micro	2.0	Y	Y	-
14.		Sony NEX-5R	Y	stereo / mono	-	-	mini	2.0	Y	-	-
15.		Sony NEX-6	Y	stereo / mono	-	-	mini	2.0	Y	-	-
16.		Sony NEX-7	Y	stereo / mono	Y	-	mini	2.0	-	-	-

The A6400 is a recent model that features in the current product line-up of Sony. In contrast, the X-T20 has been discontinued (but can be found pre-owned on ebay). As a replacement in the same line of cameras, the X-T20 was succeeded by the Fujifilm X-T100. Further information on the features and operation of the A6400 and X-T20 can be found, respectively, in the Sony A6400 Manual (free pdf) or the online Fujifilm X-T20 Manual.

Review summary

So what is the bottom line? Which of the two cameras – the Sony A6400 or the Fujifilm X-T20 – 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.

Advantages of the Sony Alpha A6400:

• Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
• Larger viewfinder image: Features a viewfinder with a higher magnification (0.70x vs 0.62x).
• More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
• Faster burst: Shoots at higher frequency (11 vs 8 flaps/sec) to capture the decisive moment.
• More compact: Is smaller (120x67mm vs 118x83mm) and thus needs less room in the bag.
• Longer lasting: Can take more shots (410 versus 350) on a single battery charge.
• Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
• Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
• Easier wireless transfer: Supports Bluetooth for image sharing without cables.
• More modern: Is somewhat more recent (announced 1 year and 11 months after the X-T20).

Reasons to prefer the Fujifilm X-T20:

• Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
• More detailed LCD: Has a higher resolution rear screen (1040k vs 922k dots).
• Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
• More heavily discounted: Has been on the market for longer (launched in January 2017).

If the count of individual advantages (bullet points above) is taken as a guide, the A6400 is the clear winner of the match-up (10 : 4 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 sports photographer will view the differences between cameras in a way that diverges from the perspective of a street photog, and a person interested in family portraits has distinct needs from a landscape 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 Sony A6400 and the Fujifilm X-T20 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 comparison of technical specifications can provide a useful overview of the capabilities of different cameras, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the A6400 or the X-T20. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased.

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.

Expert Camera Reviews

		Camera   Model	AP   score	CL   score	DCW   score	DPR   score	EPZ   score	PB   score	Camera Launch	Launch Price	Street Price
1.		Sony A6400	4/5	+	4/5	85/100	4.5/5	4/5	Jan 2019	US$ 899	amazon.com
2.		Fujifilm X-T20	5/5	+ +	5/5	82/100	5/5	4.5/5	Jan 2017	US$ 899	ebay.com
3.		Fujifilm X-A5	..	+	4.1/5	..	4/5	3.5/5	Jan 2018	US$ 399	ebay.com
4.		Fujifilm X-E3	4.5/5	+	4.5/5	84/100	4.5/5	4.5/5	Sep 2017	US$ 899	ebay.com
5.		Fujifilm X-T10	4.5/5	+ +	..	80/100	5/5	5/5	May 2015	US$ 799	ebay.com
6.		Fujifilm X-T30	5/5	+ +	5/5	84/100	4.5/5	4.5/5	Feb 2019	US$ 899	ebay.com
7.		Fujifilm X-T100	4/5	+	4.5/5	79/100	4/5	4.5/5	May 2018	US$ 599	ebay.com
8.		Nikon D5300	4/5	+ +	..	79/100	4.5/5	4.5/5	Oct 2013	US$ 799	ebay.com
9.		Sony A3000	3/5	+	..	..	4/5	4/5	Aug 2013	US$ 329	ebay.com
10.		Sony A5100	4.5/5	+	..	..	4.5/5	5/5	Aug 2014	US$ 549	ebay.com
11.		Sony A6000	5/5	+	4.5/5	80/100	4.5/5	5/5	Feb 2014	US$ 599	ebay.com
12.		Sony A6100	..	..	4/5	82/100	4/5	5/5	Aug 2019	US$ 749	ebay.com
13.		Sony A6300	4.5/5	+	..	85/100	5/5	5/5	Feb 2016	US$ 999	ebay.com
14.		Sony NEX-5R	..	..	..	..	4.5/5	4.5/5	Aug 2012	US$ 749	ebay.com
15.		Sony NEX-6	5/5	+ +	..	78/100	4.5/5	4.5/5	Sep 2012	US$ 999	ebay.com
16.		Sony NEX-7	5/5	+ +	..	81/100	4.5/5	5/5	Aug 2011	US$ 1 349	ebay.com
Note: (+ +) 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. Hence, a score should always be seen in the context of the camera's market launch date and its price, 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.

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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. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.

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