Fujifilm X-T20 vs Sony A5100
The Fujifilm X-T20 and the Sony Alpha A5100 are two digital cameras that were officially introduced, respectively, in January 2017 and August 2014. Both the X-T20 and the A5100 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.
|Fujifilm X-T20||Sony A5100|
|Mirrorless system camera||Mirrorless system camera|
|Fujifilm X mount lenses||Sony E mount lenses|
|24 MP, APS-C Sensor||24 MP, APS-C Sensor|
|4K/30p Video||1080/60p Video|
|ISO 200-12800 (100-51200)||ISO 100-25600|
|Electronic viewfinder (2360k dots)||No viewfinder, LCD framing|
|3.0" LCD, 1040k dots||3.0" LCD, 922k dots|
|Tilting touchscreen||Tilting touchscreen|
|8 shutter flaps per second||6 shutter flaps per second|
|350 shots per battery charge||400 shots per battery charge|
|118 x 83 x 41 mm, 383 g||110 x 63 x 36 mm, 283 g|
Going beyond this snapshot of core features and characteristics, what are the differences between the Fujifilm X-T20 and the Sony Alpha A5100? 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-T20 and the Sony A5100. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear 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 A5100 is also available in two color-versions, but different ones (black, white).
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A5100 is notably smaller (29 percent) than the Fujifilm X-T20. Moreover, the A5100 is markedly lighter (26 percent) than the X-T20. In this context, it is worth noting that neither the X-T20 nor the A5100 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 Fujinon X Lens Catalog (X-T20) and the Sony E-Mount Lens Catalog (A5100). 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 X-T20 gets 350 shots out of its NP-W126S battery, while the A5100 can take 400 images on a single charge of its NP-FW50 power pack. The battery packs of both cameras can be charged via USB, which can be very convenient when travelling.
The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. 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-T20»||4.6 in||3.3 in||1.6 in||13.5 oz||350||n||Jan 2017||899||Fujifilm X-T20|
|Sony A5100«||4.3 in||2.5 in||1.4 in||10.0 oz||400||n||Aug 2014||549||Sony A5100|
|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 X70« »||4.4 in||2.5 in||1.7 in||12.0 oz||330||n||Jan 2016||799||Fujifilm X70|
|Fujifilm X-A3« »||4.6 in||2.6 in||1.6 in||12.0 oz||410||n||Aug 2016||399||Fujifilm X-A3|
|Fujifilm X-A10« »||4.6 in||2.6 in||1.6 in||11.7 oz||410||n||Dec 2016||399||Fujifilm X-A10|
|Fujifilm X-E2S« »||5.1 in||3.0 in||1.5 in||12.3 oz||350||n||Jan 2016||699||Fujifilm X-E2S|
|Fujifilm X-T10« »||4.6 in||3.3 in||1.6 in||13.4 oz||350||n||May 2015||799||Fujifilm X-T10|
|Fujifilm X-E2« »||5.1 in||3.0 in||1.5 in||12.3 oz||350||n||Oct 2013||999||Fujifilm X-E2|
|Sony RX100 IV« »||4.0 in||2.3 in||1.6 in||10.5 oz||280||n||Jun 2015||999||Sony RX100 IV|
|Sony A5000« »||4.3 in||2.5 in||1.4 in||9.5 oz||420||n||Jan 2014||449||Sony A5000|
|Sony A6000« »||4.7 in||2.6 in||1.8 in||12.1 oz||360||n||Feb 2014||599||Sony A6000|
|Sony NEX-3N« »||4.3 in||2.4 in||1.4 in||9.5 oz||480||n||Feb 2013||499||Sony NEX-3N|
|Sony RX100« »||4.0 in||2.3 in||1.4 in||8.5 oz||330||n||Jun 2012||649||Sony RX100|
|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 A5100 was launched at a markedly lower price (by 39 percent) than the X-T20, 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. 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 are more costly to manufacture and tend to 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.
Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) 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 larger individual pixels (with a pixel pitch of 3.92μm versus 3.91μm for the A5100), which gives it a potential advantage in terms of light gathering capacity. In addition, the X-T20 is much more recent (by 2 years and 5 months) than the A5100, and its sensor will have benefitted from technological advances during this time. 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 Fujifilm X-T20 has a native sensitivity range from ISO 200 to ISO 12800, which can be extended to ISO 100-51200. The corresponding ISO settings for the Sony Alpha A5100 are ISO 100 to ISO 25600 (no boost).
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 following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.
|Fujifilm X-T20||APS-C||24.0||6000||4000||4K/30p||..||..||..||..||Fujifilm X-T20|
|Sony A5100||APS-C||24.0||6000||4000||1080/60p||23.8||12.7||1347||80||Sony A5100|
|Fujifilm X-T30||APS-C||26.0||6240||4160||4K/30p||..||..||..||..||Fujifilm X-T30|
|Fujifilm X-A5||APS-C||24.0||6000||4000||4K/15p||..||..||..||..||Fujifilm X-A5|
|Fujifilm X-T100||APS-C||24.0||6000||4000||4K/15p||..||..||..||..||Fujifilm X-T100|
|Fujifilm X-E3||APS-C||24.0||6000||4000||4K/30p||..||..||..||..||Fujifilm X-E3|
|Fujifilm X70||APS-C||16.0||4896||3264||1080/60p||..||..||..||..||Fujifilm X70|
|Fujifilm X-A3||APS-C||24.0||6000||4000||1080/60p||..||..||..||..||Fujifilm X-A3|
|Fujifilm X-A10||APS-C||16.0||4896||3264||1080/30p||..||..||..||..||Fujifilm X-A10|
|Fujifilm X-E2S||APS-C||16.0||4896||3264||1080/60p||..||..||..||..||Fujifilm X-E2S|
|Fujifilm X-T10||APS-C||16.0||4896||3264||1080/60p||..||..||..||..||Fujifilm X-T10|
|Fujifilm X-E2||APS-C||16.0||4896||3264||1080/60p||..||..||..||..||Fujifilm X-E2|
|Sony RX100 IV||1-inch||20.0||5472||3648||4K/30p||22.8||12.6||591||70||Sony RX100 IV|
|Sony A5000||APS-C||19.8||5456||3632||1080/60i||23.8||13.0||1089||79||Sony A5000|
|Sony A6000||APS-C||24.0||6000||4000||1080/60p||24.1||13.1||1347||82||Sony A6000|
|Sony NEX-3N||APS-C||16.0||4912||3264||1080/60i||22.8||12.5||1067||74||Sony NEX-3N|
|Sony RX100||1-inch||20.0||5472||3648||1080/60p||22.6||12.4||390||66||Sony RX100|
Many modern cameras are not only capable of taking still images, but can also record movies. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the X-T20 provides a higher video resolution than the A5100. It can shoot video footage at 4K/30p, while the Sony is limited to 1080/60p.
Apart from body and sensor, cameras can and do differ across a variety of features. For example, the X-T20 has an electronic viewfinder (2360k dots), which can be very helpful when shooting in bright sunlight. In contrast, the A5100 relies on live view and the rear LCD for framing. The adjacent table lists some of the other core features of the Fujifilm X-T20 and Sony A5100 along with similar information for a selection of comparators.
|Fujifilm X-T20||2360||n||3.0||1040||tilting||Y||1/4000s||8.0||Y||n||Fujifilm X-T20|
|Sony A5100||none||n||3.0||922||tilting||Y||1/4000s||6.0||Y||n||Sony A5100|
|Fujifilm X-T30||2360||n||3.0||1040||tilting||Y||1/4000s||8.0||Y||n||Fujifilm X-T30|
|Fujifilm X-A5||none||n||3.0||1040||tilting||Y||1/4000s||6.0||Y||n||Fujifilm X-A5|
|Fujifilm X-T100||2360||n||3.0||1040||full-flex||Y||1/4000s||6.0||Y||n||Fujifilm X-T100|
|Fujifilm X-E3||2360||n||3.0||1040||fixed||Y||1/4000s||8.0||n||n||Fujifilm X-E3|
|Fujifilm X70||optional||n||3.0||1040||tilting||Y||1/4000s||8.0||Y||n||Fujifilm X70|
|Fujifilm X-A3||none||n||3.0||1040||tilting||Y||1/4000s||6.0||Y||n||Fujifilm X-A3|
|Fujifilm X-A10||none||n||3.0||1040||tilting||n||1/4000s||6.0||Y||n||Fujifilm X-A10|
|Fujifilm X-E2S||2360||n||3.0||1040||fixed||n||1/4000s||7.0||Y||n||Fujifilm X-E2S|
|Fujifilm X-T10||2360||n||3.0||920||tilting||n||1/4000s||8.0||Y||n||Fujifilm X-T10|
|Fujifilm X-E2||2360||n||3.0||1040||fixed||n||1/4000s||7.0||Y||n||Fujifilm X-E2|
|Sony RX100 IV||2359||n||3.0||1228||tilting||n||1/2000s||16.0||Y||Y||Sony RX100 IV|
|Sony A5000||none||n||3.0||461||tilting||n||1/4000s||3.5||Y||n||Sony A5000|
|Sony A6000||1440||n||3.0||922||tilting||n||1/4000s||11.0||Y||n||Sony A6000|
|Sony NEX-3N||optional||n||3.0||460||tilting||n||1/4000s||4.0||Y||n||Sony NEX-3N|
|Sony RX100||none||n||3.0||1229||fixed||n||1/2000s||10.0||Y||Y||Sony RX100|
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 X-T20 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 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 X-T20 writes its imaging data to SDXC cards, while the A5100 uses SDXC or Memory Stick PRO Duo cards. Both cameras can use UHS-I cards, which provide for Ultra High Speed data transfer of up to 104 MB/s.
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-T20 and Sony Alpha A5100 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
|Fujifilm X-T20||Y||stereo||mono||Y||-||micro||2.0||Y||-||-||Fujifilm X-T20|
|Sony A5100||-||stereo||mono||-||-||micro||2.0||Y||Y||-||Sony A5100|
|Fujifilm X-T30||Y||stereo||mono||Y||-||micro||3.1||Y||-||Y||Fujifilm X-T30|
|Fujifilm X-A5||Y||stereo||mono||Y||-||mini||2.0||Y||-||Y||Fujifilm X-A5|
|Fujifilm X-T100||Y||stereo||mono||Y||-||micro||2.0||Y||-||Y||Fujifilm X-T100|
|Fujifilm X-E3||Y||stereo||mono||Y||-||micro||2.0||Y||-||Y||Fujifilm X-E3|
|Fujifilm X70||Y||stereo||mono||Y||-||micro||2.0||Y||-||-||Fujifilm X70|
|Fujifilm X-A3||Y||stereo||mono||-||-||micro||2.0||Y||-||-||Fujifilm X-A3|
|Fujifilm X-A10||-||stereo||mono||-||-||mini||2.0||Y||-||-||Fujifilm X-A10|
|Fujifilm X-E2S||Y||stereo||mono||Y||-||micro||2.0||Y||-||-||Fujifilm X-E2S|
|Fujifilm X-T10||Y||stereo||mono||Y||-||micro||2.0||Y||-||-||Fujifilm X-T10|
|Fujifilm X-E2||Y||stereo||mono||Y||-||micro||2.0||Y||-||-||Fujifilm X-E2|
|Sony RX100 IV||-||stereo||mono||-||-||micro||2.0||Y||Y||-||Sony RX100 IV|
|Sony A5000||-||stereo||mono||-||-||micro||2.0||Y||Y||-||Sony A5000|
|Sony A6000||Y||stereo||mono||-||-||micro||2.0||Y||Y||-||Sony A6000|
|Sony NEX-3N||-||stereo||mono||-||-||micro||2.0||-||-||-||Sony NEX-3N|
|Sony RX100||-||stereo||mono||-||-||micro||2.0||-||-||-||Sony RX100|
It is notable that the X-T20 has a hotshoe, while the A5100 does not. This socket makes it possible to easily attach optional accessories, such as an external flash gun.
Both the X-T20 and the A5100 are recent models that are part of the current product line-up. The A5100 replaced the earlier Sony A5000, while the X-T20 followed on from the Fujifilm X-T10. 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 what conclusions can be drawn? Is there a clear favorite between the Fujifilm X-T20 and the Sony A5100? Which camera is better? Below is a summary of the relative strengths of each of the two contestants.
Advantages of the Fujifilm X-T20:
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- Better video: Provides higher definition movie capture (4K/30p vs 1080/60p).
- Better sound: Can connect to an external microphone for higher quality sound recording.
- Easier framing: Has an electronic viewfinder for image composition and settings control.
- More detailed LCD: Has a higher resolution rear screen (1040k vs 922k dots).
- Faster burst: Shoots at higher frequency (8 vs 6 flaps/sec) to capture the decisive moment.
- Less disturbing: Has an electronic shutter option for completely silent shooting.
- Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
- Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
- More modern: Reflects 2 years and 5 months of technical progress since the A5100 launch.
Arguments in favor of the Sony Alpha A5100:
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
- More compact: Is smaller (110x63mm vs 118x83mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight (by 100g or 26 percent) and is thus easier to take along.
- Longer lasting: Gets more shots (400 versus 350) out of a single battery charge.
- Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
- More affordable: Was introduced into a lower priced category (39 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 X-T20 emerges as the winner of the contest (10 : 8 points). However, the relevance of individual strengths will vary across photographers, so that you might want to apply your own weighing scheme to the summary points when reflecting and deciding on a new camera. 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 X-T20 and the Sony A5100 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 X-T20 or the A5100. 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 where reviews by experts come in. The adjacent summary-table relays the overall verdicts of several of the most popular 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.
The above review scores should be interpreted with care, though. The ratings are only valid when referring to cameras in the same category and of the same age. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. 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 your choice using the following search menu. As an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.
- Canon XSi vs Fujifilm X-T20
- Epson R-D1 vs Fujifilm X-T20
- Fujifilm GFX 100 vs Fujifilm X-T20
- Fujifilm X-T20 vs Fujifilm X-T30
- Fujifilm X-T20 vs Sony HX350
- Leica CL vs Sony A5100
- Nikon D4S vs Sony A5100
- Olympus E-450 vs Sony A5100
- Panasonic GF1 vs Sony A5100
- Panasonic GF7 vs Sony A5100
- Ricoh WG-60 vs Sony A5100
- Sony A5100 vs Sony HX99
Specifications: Fujifilm X-T20 vs Sony A5100
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-T20||Sony A5100|
|Camera Type||Mirrorless system camera||Mirrorless system camera|
|Camera Lens||Fujifilm X mount lenses||Sony E mount lenses|
|Launch Date||January 2017||August 2014|
|Launch Price||USD 899||USD 549|
|Sensor Specs||Fujifilm X-T20||Sony A5100|
|Sensor Format||APS-C Sensor||APS-C Sensor|
|Sensor Size||23.6 x 15.6 mm||23.5 x 15.6 mm|
|Sensor Area||368.16 mm2||366.6 mm2|
|Sensor Diagonal||28.3 mm||28.2 mm|
|Sensor Resolution||24 Megapixels||24 Megapixels|
|Image Resolution||6000 x 4000 pixels||6000 x 4000 pixels|
|Pixel Pitch||3.92 μm||3.91 μm|
|Pixel Density||6.52 MP/cm2||6.55 MP/cm2|
|Moiré control||no AA filter||Anti-Alias filter|
|Movie Capability||4K/30p Video||1080/60p Video|
|ISO Setting||200-12800 ISO||100-25600 ISO|
|ISO Boost||100-51200 ISO||no Enhancement|
|Image Processor||X-Processor Pro2||BIONZ X|
|DXO Sensor Quality (score)||..||80|
|DXO Color Depth (bits)||..||23.8|
|DXO Dynamic Range (EV)||..||12.7|
|DXO Low Light (ISO)||..||1347|
|Screen Specs||Fujifilm X-T20||Sony A5100|
|Viewfinder Type||Electronic viewfinder||No viewfinder|
|Viewfinder Field of View||100%|
|Viewfinder Resolution||2360k dots|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0 inch||3.0 inch|
|LCD Resolution||1040k dots||922k dots|
|LCD Attachment||Tilting screen||Tilting screen|
|Shooting Specs||Fujifilm X-T20||Sony A5100|
|Focus System||On-Sensor Phase-detect||On-Sensor Phase-detect|
|Manual Focusing Aid||Focus Peaking||Focus Peaking|
|Max Shutter Speed (mechanical)||1/4000/s||1/4000/s|
|Continuous Shooting||8 shutter flaps/s||6 shutter flaps/s|
|Electronic Shutter||up to 1/32000s||no E-Shutter|
|Time-Lapse Photography||Intervalometer built-in||no Intervalometer|
|Fill Flash||Build-in Flash||Build-in Flash|
|Storage Medium||SDXC cards||MS or SDXC cards|
|Second Storage Option||Single card slot||Single card slot|
|UHS card support||UHS-I||UHS-I|
|Connectivity Specs||Fujifilm X-T20||Sony A5100|
|External Flash||Hotshoe||no Hotshoe|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||micro HDMI||micro HDMI|
|Microphone Port||External MIC port||no MIC socket|
|Wifi Support||Wifi built-in||Wifi built-in|
|Near-Field Communication||no NFC||NFC built-in|
|Body Specs||Fujifilm X-T20||Sony A5100|
|Battery Life (CIPA)||350 shots per charge||400 shots per charge|
|In-Camera Charging||USB charging||USB charging|
118 x 83 x 41 mm
(4.6 x 3.3 x 1.6 in)
110 x 63 x 36 mm
(4.3 x 2.5 x 1.4 in)
|Camera Weight||383 g (13.5 oz)||283 g (10.0 oz)|
Did you notice an error on this page? If so, please get in touch, so that we can correct the information.