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 100-32000 (100-102400)		ISO 200-12800 (100-51200)
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
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

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. In this context, it is worth noting that neither the A6400 nor the X-T20 are weather-sealed.

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 NP-FW50 battery, while the X-T20 can take 350 images on a single charge of its 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, just click on the right or left arrow next to the camera that you would like to inspect. Alternatively, you can also use the CAM-parator to select your camera combination among a larger number of options.

Camera Body Specifications

	Camera Model	Camera Width	Camera Height	Camera Depth	Camera Weight	Battery Life (CIPA)	Weather Sealing (yes/no)	Camera Launch (announced)	Launch Price (USD)	Street Price (USD)	Used Price (USD)	Camera Model
	Sony A6400»	4.7 in	2.6 in	2.0 in	14.2 oz	410	n	Jan 2019	899			Sony A6400
	Fujifilm X-T20«	4.6 in	3.3 in	1.6 in	13.5 oz	350	n	Jan 2017	899			Fujifilm X-T20
	Fujifilm X-T30« »	4.6 in	3.3 in	1.9 in	13.5 oz	380	n	Feb 2019	899			Fujifilm X-T30
	Fujifilm X-A5« »	4.6 in	2.7 in	1.6 in	12.7 oz	450	n	Jan 2018	399	-		Fujifilm X-A5
	Fujifilm X-T100« »	4.8 in	3.3 in	1.9 in	15.8 oz	430	n	May 2018	599			Fujifilm X-T100
	Fujifilm X-E3« »	4.8 in	2.9 in	1.7 in	11.9 oz	350	n	Sep 2017	899			Fujifilm X-E3
	Fujifilm X-T10« »	4.6 in	3.3 in	1.6 in	13.4 oz	350	n	May 2015	799	-		Fujifilm X-T10
	Nikon D5300« »	4.9 in	3.9 in	3.0 in	16.9 oz	600	n	Oct 2013	799	-		Nikon D5300
	Sony A6100« »	4.7 in	2.6 in	2.3 in	14.0 oz	420	n	Aug 2019	749			Sony A6100
	Sony A6300« »	4.7 in	2.6 in	1.9 in	14.3 oz	400	Y	Feb 2016	999	-		Sony A6300
	Sony A5100« »	4.3 in	2.5 in	1.4 in	10.0 oz	400	n	Aug 2014	549			Sony A5100
	Sony A6000« »	4.7 in	2.6 in	1.8 in	12.1 oz	360	n	Feb 2014	599	-		Sony A6000
	Sony A3000« »	5.0 in	3.6 in	3.3 in	14.5 oz	470	n	Aug 2013	329	-		Sony A3000
	Sony NEX-5R« »	4.4 in	2.3 in	1.5 in	9.7 oz	330	n	Aug 2012	749	-		Sony NEX-5R
	Sony NEX-6« »	4.7 in	2.6 in	1.7 in	12.2 oz	360	n	Sep 2012	999	-		Sony NEX-6
	Sony NEX-7« »	4.7 in	2.6 in	1.7 in	14.1 oz	430	n	Aug 2011	1,349	-		Sony NEX-7
Convert to Metric
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 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.

In terms of underlying technology, both cameras are build around CMOS sensors.

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.

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.

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.

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.

Both the A6400 and the X-T20 are recent models that are part of the current product line-up. The X-T20 replaced the earlier Fujifilm X-T10, while the A6400 followed on from the Sony A6300. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Sony and Fujifilm websites.

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.
• 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 (9 : 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 (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.

Review Scores

	Camera Model						Camera Launch (announced)	Launch Price (USD)	Street Price (USD)	Used Price (USD)	Camera Model
	Sony A6400»	+	85/100	4.5/5	-	4/5	Jan 2019	899			Sony A6400
	Fujifilm X-T20«	+ +	82/100	5/5	-	4.5/5	Jan 2017	899			Fujifilm X-T20
	Fujifilm X-T30« »	+ +	84/100	4.5/5	-	4.5/5	Feb 2019	899			Fujifilm X-T30
	Fujifilm X-A5« »	+	-	4/5	4/5	3.5/5	Jan 2018	399	-		Fujifilm X-A5
	Fujifilm X-T100« »	+	79/100	4/5	-	4.5/5	May 2018	599			Fujifilm X-T100
	Fujifilm X-E3« »	+	84/100	4.5/5	4.5/5	4.5/5	Sep 2017	899			Fujifilm X-E3
	Fujifilm X-T10« »	+ +	80/100	5/5	4/5	5/5	May 2015	799	-		Fujifilm X-T10
	Nikon D5300« »	+ +	79/100	4.5/5	4.5/5	4.5/5	Oct 2013	799	-		Nikon D5300
	Sony A6100« »	-	-	-	-	-	Aug 2019	749			Sony A6100
	Sony A6300« »	+	85/100	5/5	5/5	5/5	Feb 2016	999	-		Sony A6300
	Sony A5100« »	+	-	4.5/5	4.5/5	5/5	Aug 2014	549			Sony A5100
	Sony A6000« »	+	80/100	4.5/5	5/5	5/5	Feb 2014	599	-		Sony A6000
	Sony A3000« »	+	-	4/5	4.5/5	4/5	Aug 2013	329	-		Sony A3000
	Sony NEX-5R« »	-	-	4.5/5	-	4.5/5	Aug 2012	749	-		Sony NEX-5R
	Sony NEX-6« »	+ +	78/100	4.5/5	5/5	4.5/5	Sep 2012	999	-		Sony NEX-6
	Sony NEX-7« »	+ +	81/100	4.5/5	5/5	5/5	Aug 2011	1,349	-		Sony NEX-7
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. 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.

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.

Specifications: Sony A6400 vs Fujifilm X-T20

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.

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