Fujifilm X-T100 vs Sony A5100
The Fujifilm X-T100 and the Sony Alpha A5100 are two digital cameras that were officially introduced, respectively, in May 2018 and August 2014. Both the X-T100 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-T100||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/15p Video||1080/60p Video|
|ISO 200-12,800 (100 - 51,200)||ISO 100-25,600|
|Electronic viewfinder (2360k dots)||No viewfinder, LCD framing|
|3.0 LCD, 1040k dots||3.0 LCD, 922k dots|
|Fully flexible touchscreen||Tilting touchscreen|
|6 shutter flaps per second||6 shutter flaps per second|
|430 shots per battery charge||400 shots per battery charge|
|121 x 83 x 47 mm, 448 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-T100 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.
An illustration of the physical size and weight of the Fujifilm X-T100 and the Sony A5100 is provided 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-T100 can be obtained in three different colors (black, silver, gold), while the A5100 is available in two color-versions (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 considerably smaller (31 percent) than the Fujifilm X-T100. Moreover, the A5100 is substantially lighter (37 percent) than the X-T100. In this context, it is worth noting that neither the X-T100 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-T100) 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-T100 gets 430 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-T100||121 mm||83 mm||47 mm||448 g||430||n||May 2018||599|
|Sony A5100||110 mm||63 mm||36 mm||283 g||400||n||Aug 2014||549|
|Canon 200D||122 mm||93 mm||70 mm||453 g||650||n||Jun 2017||549|
|Fujifilm X-T200||121 mm||84 mm||55 mm||370 g||270||n||Jan 2020||699|
|Fujifilm X-T30||118 mm||83 mm||47 mm||383 g||380||n||Feb 2019||899|
|Fujifilm X-A7||119 mm||68 mm||41 mm||320 g||440||n||Sep 2019||499|
|Fujifilm X-A5||117 mm||68 mm||40 mm||361 g||450||n||Jan 2018||399|
|Fujifilm XF10||113 mm||64 mm||41 mm||279 g||330||n||Jul 2018||499|
|Fujifilm X-T3||133 mm||93 mm||59 mm||539 g||390||Y||Sep 2018||1,499|
|Fujifilm X100F||127 mm||75 mm||52 mm||469 g||390||n||Jan 2017||1,299|
|Fujifilm X-E3||121 mm||74 mm||43 mm||337 g||350||n||Sep 2017||899|
|Fujifilm X-T20||118 mm||83 mm||41 mm||383 g||350||n||Jan 2017||899|
|Sony RX100 IV||102 mm||58 mm||41 mm||298 g||280||n||Jun 2015||999|
|Sony A5000||110 mm||63 mm||36 mm||269 g||420||n||Jan 2014||449|
|Sony A6000||120 mm||67 mm||45 mm||344 g||360||n||Feb 2014||599|
|Sony NEX-3N||110 mm||62 mm||35 mm||269 g||480||n||Feb 2013||499|
|Sony RX100||102 mm||58 mm||36 mm||240 g||330||n||Jun 2012||649|
Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
(1) Number of images that can be taken on a full battery charge according to the CIPA-standard; (2) Official announcement.
Any camera decision will naturally be influenced heavily by the price. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The A5100 was somewhat cheaper (by 8 percent) than the X-T100 at launch, but both cameras fall into the same price category. Normally, street prices remain initially close to the MSRP, but after a couple of months, the first discounts appear. 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 imaging sensor is a crucial determinant 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. 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 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. The sensor area in the A5100 is 1 percent smaller. 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-T100 has a slightly larger sensor, both cameras offer the same resolution of 24 megapixels. This implies that the X-T100 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-T100 is much more recent (by 3 years and 9 months) than the A5100, and its sensor will have benefitted from technological advances during this time.
The Fujifilm X-T100 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 determines an overall sensor rating, as well as sub-scores for low-light sensitivity ("DXO Sports"), dynamic range ("DXO Landscape"), and color depth ("DXO Portrait"). The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.
|Sony RX100 IV||1-inch||20.0||5472||3648||4K/30p||22.8||12.6||591||70|
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, but the X-T100 provides a higher video resolution than the A5100. It can shoot video footage at 4K/15p, while the Sony is limited to 1080/60p.
Beyond body and sensor, cameras can and do differ across a range of features. For example, the X-T100 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-T100 and Sony A5100 along with similar information for a selection of comparators.
|Sony RX100 IV||2359||n||3.0||1228||tilting||n||1/2000s||16.0||Y||Y|
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-T100 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-T100 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-T100 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-T100 and Sony Alpha A5100 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
| WiFi |
|Sony RX100 IV||-||stereo||mono||-||-||micro||2.0||Y||Y||-|
It is notable that the X-T100 has a hotshoe, while the A5100 does not. This socket makes it possible to easily attach optional accessories, such as an external flash gun.
The A5100 is a recent model that features in the current product line-up of Sony. In contrast, the X-T100 has been discontinued (but can be found pre-owned on eBay). As a replacement in the same line of cameras, the X-T100 was succeeded by the Fujifilm X-T200. 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-T100 and the Sony A5100? Which camera is better? Below is a summary of the relative strengths of each of the two contestants.
Reasons to prefer the Fujifilm X-T100:
- Better video: Provides higher definition movie capture (4K/15p 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).
- More flexible LCD: Has a full-flex screen for odd-angle shots in portrait or landscape orientation.
- 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.
- Easier wireless transfer: Supports Bluetooth for image sharing without cables.
- More modern: Reflects 3 years and 9 months of technical progress since the A5100 launch.
Arguments in favor of the Sony Alpha A5100:
- More compact: Is smaller (110x63mm vs 121x83mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight (by 165g or 37 percent) and is thus easier to take along.
- Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
- 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-T100 is the clear winner of the match-up (10 : 4 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-T100 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 incomplete and does no justice, for example, to the way the X-T100 or the A5100 perform in practice. At times, user reviews, such as those published at amazon, address these issues in a useful manner, but such feedback is on many occasions incomplete, inconsistent, and unreliable.
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.
|Fujifilm X-T100||+||79/100||4/5||..||4.5/5||May 2018||599|
|Sony A5100||+||..||4.5/5||4.5/5||5/5||Aug 2014||549|
|Canon 200D||+ +||78/100||4.5/5||4.5/5||4.5/5||Jun 2017||549|
|Fujifilm X-T200||..||82/100||4/5||..||4.5/5||Jan 2020||699|
|Fujifilm X-T30||+ +||84/100||4.5/5||5/5||4.5/5||Feb 2019||899|
|Fujifilm X-A7||..||81/100||4/5||..||3.5/5||Sep 2019||499|
|Fujifilm X-A5||+||..||4/5||4/5||3.5/5||Jan 2018||399|
|Fujifilm XF10||..||75/100||4/5||..||4.5/5||Jul 2018||499|
|Fujifilm X-T3||+ +||88/100||5/5||5/5||5/5||Sep 2018||1,499|
|Fujifilm X100F||+||83/100||4.5/5||..||4.5/5||Jan 2017||1,299|
|Fujifilm X-E3||+||84/100||4.5/5||4.5/5||4.5/5||Sep 2017||899|
|Fujifilm X-T20||+ +||82/100||5/5||..||4.5/5||Jan 2017||899|
|Sony RX100 IV||+ +||85/100||4/5||4.5/5||4.5/5||Jun 2015||999|
|Sony A5000||+||..||4.5/5||o||4.5/5||Jan 2014||449|
|Sony A6000||+||80/100||4.5/5||5/5||5/5||Feb 2014||599|
|Sony NEX-3N||..||..||4.5/5||4/5||4.5/5||Feb 2013||499|
|Sony RX100||+ +||78/100||4/5||5/5||5/5||Jun 2012||649|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
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. A score, therefore, has to be seen in close connection to the price and market introduction time 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 G7 X vs Fujifilm X-T100
- Canon SX530 vs Sony A5100
- Canon SX710 vs Sony A5100
- Fujifilm X-T100 vs Leica Q2
- Fujifilm X-T100 vs Nikon 1 J5
- Fujifilm X-T100 vs Sony A7 II
- Leica V-LUX 3 vs Sony A5100
- Nikon D7100 vs Sony A5100
- Panasonic GF1 vs Sony A5100
- Panasonic GX1 vs Sony A5100
- Sony A5100 vs Sony A6600
- Sony A5100 vs Sony A7R
Specifications: Fujifilm X-T100 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-T100||Sony A5100|
|Camera Type||Mirrorless system camera||Mirrorless system camera|
|Camera Lens||Fujifilm X mount lenses||Sony E mount lenses|
|Launch Date||May 2018||August 2014|
|Launch Price||USD 599||USD 549|
|Sensor Specs||Fujifilm X-T100||Sony A5100|
|Sensor Format||APS-C Sensor||APS-C Sensor|
|Sensor Size||23.5 x 15.7 mm||23.5 x 15.6 mm|
|Sensor Area||368.95 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||6.50 MP/cm2||6.55 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||4K/15p Video||1080/60p Video|
|ISO Setting||200 - 12,800 ISO||100 - 25,600 ISO|
|ISO Boost||100 - 51,200 ISO||no Enhancement|
|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-T100||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||3.0inch||3.0inch|
|LCD Resolution||1040k dots||922k dots|
|LCD Attachment||Fully flexible screen||Tilting screen|
|Shooting Specs||Fujifilm X-T100||Sony A5100|
|Focus System||On-Sensor Phase-detect||On-Sensor Phase-detect|
|Manual Focusing Aid||Focus Peaking||Focus Peaking|
|Max Shutter Speed (mechanical)||1/4000s||1/4000s|
|Continuous Shooting||6 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-T100||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|
|Bluetooth Support||Bluetooth built-in||no Bluetooth|
|Body Specs||Fujifilm X-T100||Sony A5100|
|Battery Life (CIPA)||430 shots per charge||400 shots per charge|
|In-Camera Charging||USB charging||USB charging|
121 x 83 x 47 mm
(4.8 x 3.3 x 1.9 in)
110 x 63 x 36 mm
(4.3 x 2.5 x 1.4 in)
|Camera Weight||448 g (15.8 oz)||283 g (10.0 oz)|
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