Fujifilm X-A2 vs Sony A5100
The Fujifilm X-A2 and the Sony Alpha A5100 are two digital cameras that were revealed to the public, respectively, in January 2015 and August 2014. Both the X-A2 and the A5100 are mirrorless interchangeable lens cameras that are equipped with an APS-C sensor. The Fujifilm has a resolution of 16 megapixels, whereas the Sony provides 24 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.
Going beyond this snapshot of core features and characteristics, what are the differences between the Fujifilm X-A2 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-A2 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 width, height and depth dimensions are rounded to the nearest millimeter.
The X-A2 can be obtained in three different colors (black, brown, white), 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 notably smaller (12 percent) than the Fujifilm X-A2. Moreover, the A5100 is markedly lighter (19 percent) than the X-A2. In this context, it is worth noting that neither the X-A2 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-A2) 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-A2 gets 410 shots out of its NP-W126 battery, while the A5100 can take 400 images on a single charge of its NP-FW50 power pack. The power pack in the A5100 can be charged via the USB port, 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. 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.
|1.||Fujifilm X-A2||117 mm||67 mm||40 mm||350 g||410||n||Jan 2015||399||ebay.com|
|2.||Sony A5100||110 mm||63 mm||36 mm||283 g||400||n||Aug 2014||549||ebay.com|
|3.||Fujifilm X-A5||117 mm||68 mm||40 mm||361 g||450||n||Jan 2018||399||ebay.com|
|4.||Fujifilm X70||113 mm||64 mm||44 mm||340 g||330||n||Jan 2016||799||ebay.com|
|5.||Fujifilm X-A3||117 mm||67 mm||40 mm||339 g||410||n||Aug 2016||399||ebay.com|
|6.||Fujifilm X-A10||117 mm||67 mm||40 mm||331 g||410||n||Dec 2016||399||ebay.com|
|7.||Fujifilm X-E2S||129 mm||75 mm||37 mm||350 g||350||n||Jan 2016||699||ebay.com|
|8.||Fujifilm X-T10||118 mm||83 mm||41 mm||381 g||350||n||May 2015||799||ebay.com|
|9.||Fujifilm X-A1||117 mm||67 mm||39 mm||330 g||350||n||Sep 2013||399||ebay.com|
|10.||Fujifilm X-E2||129 mm||75 mm||37 mm||350 g||350||n||Oct 2013||999||ebay.com|
|11.||Fujifilm X-M1||117 mm||67 mm||39 mm||330 g||350||n||Jun 2013||699||ebay.com|
|12.||Fujifilm X-E1||129 mm||75 mm||38 mm||350 g||350||n||Sep 2012||999||ebay.com|
|13.||Sony A5000||110 mm||63 mm||36 mm||269 g||420||n||Jan 2014||449||ebay.com|
|14.||Sony A6000||120 mm||67 mm||45 mm||344 g||360||n||Feb 2014||599||ebay.com|
|15.||Sony A3000||128 mm||91 mm||85 mm||411 g||470||n||Aug 2013||329||ebay.com|
|16.||Sony NEX-3N||110 mm||62 mm||35 mm||269 g||480||n||Feb 2013||499||ebay.com|
|17.||Sony NEX-3||117 mm||62 mm||33 mm||297 g||330||n||May 2010||599||ebay.com|
|Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.|
The price is, of course, an important factor in any camera decision. The manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The X-A2 was launched at a markedly lower price (by 27 percent) than the A5100, 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. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.
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. 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 tend to be associated with larger, more expensive camera bodies 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.
Despite having a slightly smaller sensor, the A5100 offers a higher resolution of 24 megapixels, compared with 16 MP of the X-A2. This megapixels advantage comes at the cost of a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 3.91μm versus 4.80μm for the X-A2). Moreover, it should be noted that the X-A2 is a somewhat more recent model (by 4 months) than the A5100, and its sensor might have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixels.
The resolution advantage of the Sony A5100 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A5100 for good quality output (200 dots per inch) amounts to 30 x 20 inches or 76.2 x 50.8 cm, for very good quality (250 dpi) 24 x 16 inches or 61 x 40.6 cm, and for excellent quality (300 dpi) 20 x 13.3 inches or 50.8 x 33.9 cm. The corresponding values for the Fujifilm X-A2 are 24.5 x 16.3 inches or 62.2 x 41.5 cm for good quality, 19.6 x 13.1 inches or 49.7 x 33.2 cm for very good quality, and 16.3 x 10.9 inches or 41.5 x 27.6 cm for excellent quality prints.
The A5100 has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
The Fujifilm X-A2 has a native sensitivity range from ISO 200 to ISO 6400, which can be extended to ISO 100-25600. The corresponding ISO settings for the Sony Alpha A5100 are ISO 100 to ISO 25600 (no boost).
Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.
Consistent information on actual sensor performance is available from DXO Mark for many cameras. This service is based on lab testing and assigns an overall score to each camera sensor, as well as ratings for dynamic range ("DXO Landscape"), color depth ("DXO Portrait"), and low-light sensitivity ("DXO Sports"). The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.
|Note: DXO values in italics represent estimates based on sensor size and age.|
Many modern cameras cannot only take still pictures, but also record videos. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the A5100 provides a faster frame rate than the X-A2. It can shoot movie footage at 1080/60p, while the Fujifilm is limited to 1080/30p.
Apart from body and sensor, cameras can and do differ across a range of features. The X-A2 and the A5100 are similar in the sense that neither of the two has a viewfinder. The images are, thus, framed using live view on the rear LCD. The adjacent table lists some of the other core features of the Fujifilm X-A2 and Sony A5100 along with similar information for a selection of comparators.
|1.||Fujifilm X-A2||none||n||3.0 / 920||tilting||n||1/4000s||5.6/s||Y||n|
|2.||Sony A5100||none||n||3.0 / 922||tilting||Y||1/4000s||6.0/s||Y||n|
|3.||Fujifilm X-A5||none||n||3.0 / 1040||tilting||Y||1/4000s||6.0/s||Y||n|
|4.||Fujifilm X70||optional||n||3.0 / 1040||tilting||Y||1/4000s||8.0/s||Y||n|
|5.||Fujifilm X-A3||none||n||3.0 / 1040||tilting||Y||1/4000s||6.0/s||Y||n|
|6.||Fujifilm X-A10||none||n||3.0 / 1040||tilting||n||1/4000s||6.0/s||Y||n|
|7.||Fujifilm X-E2S||2360||n||3.0 / 1040||fixed||n||1/4000s||7.0/s||Y||n|
|8.||Fujifilm X-T10||2360||n||3.0 / 920||tilting||n||1/4000s||8.0/s||Y||n|
|9.||Fujifilm X-A1||none||n||3.0 / 920||tilting||n||1/4000s||5.6/s||Y||n|
|10.||Fujifilm X-E2||2360||n||3.0 / 1040||fixed||n||1/4000s||7.0/s||Y||n|
|11.||Fujifilm X-M1||none||n||3.0 / 920||tilting||n||1/4000s||5.6/s||Y||n|
|12.||Fujifilm X-E1||2360||n||2.8 / 460||fixed||n||1/4000s||6.0/s||Y||n|
|13.||Sony A5000||none||n||3.0 / 461||tilting||n||1/4000s||3.5/s||Y||n|
|14.||Sony A6000||1440||n||3.0 / 922||tilting||n||1/4000s||11.0/s||Y||n|
|15.||Sony A3000||202||n||3.0 / 230||fixed||n||1/4000s||2.5/s||Y||n|
|16.||Sony NEX-3N||optional||n||3.0 / 460||tilting||n||1/4000s||4.0/s||Y||n|
|17.||Sony NEX-3||optional||n||3.0 / 920||tilting||n||1/4000s||7.0/s||n||n|
|Notes: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.|
One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The A5100 has a touchscreen, while the X-A2 has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.Both cameras have an articulated rear screen that can be turned to be front-facing. This feature will be particularly appreciated by vloggers and photographers who are interested in taking selfies.
The X-A2 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-A2 and Sony Alpha A5100 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
Mic / Speaker
|1.||Fujifilm X-A2||Y||stereo / mono||-||-||mini||2.0||Y||-||-|
|2.||Sony A5100||-||stereo / mono||-||-||micro||2.0||Y||Y||-|
|3.||Fujifilm X-A5||Y||stereo / mono||Y||-||micro||2.0||Y||-||Y|
|4.||Fujifilm X70||Y||stereo / mono||Y||-||micro||2.0||Y||-||-|
|5.||Fujifilm X-A3||Y||stereo / mono||-||-||micro||2.0||Y||-||-|
|6.||Fujifilm X-A10||-||stereo / mono||-||-||micro||2.0||Y||-||-|
|7.||Fujifilm X-E2S||Y||stereo / mono||Y||-||micro||2.0||Y||-||-|
|8.||Fujifilm X-T10||Y||stereo / mono||Y||-||micro||2.0||Y||-||-|
|9.||Fujifilm X-A1||Y||stereo / mono||-||-||mini||2.0||Y||-||-|
|10.||Fujifilm X-E2||Y||stereo / mono||Y||-||micro||2.0||Y||-||-|
|11.||Fujifilm X-M1||Y||stereo / mono||-||-||mini||2.0||Y||-||-|
|12.||Fujifilm X-E1||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
|13.||Sony A5000||-||stereo / mono||-||-||micro||2.0||Y||Y||-|
|14.||Sony A6000||Y||stereo / mono||-||-||micro||2.0||Y||Y||-|
|15.||Sony A3000||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|16.||Sony NEX-3N||-||stereo / mono||-||-||micro||2.0||-||-||-|
|17.||Sony NEX-3||Y||stereo / mono||-||-||mini||2.0||-||-||-|
It is notable that the X-A2 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-A2 and the A5100 have been discontinued, but can regularly be found used on ebay. The X-A2 was replaced by the Fujifilm X-A3, while the A5100 does not have a direct successor. Further information on the features and operation of the X-A2 and A5100 can be found, respectively, in the Fujifilm X-A2 Manual (free pdf) or the online Sony A5100 Manual.
So what is the bottom line? Which of the two cameras – the Fujifilm X-A2 or the Sony A5100 – has the upper hand? Is one clearly better than the other? The listing below highlights the relative strengths of the two models.
Advantages of the Fujifilm X-A2:
- Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
- More affordable: Was introduced into a lower priced category (27 percent cheaper at launch).
- More modern: Is somewhat more recent (announced 4 months after the A5100).
Arguments in favor of the Sony Alpha A5100:
- More detail: Has more megapixels (24 vs 16MP), which boosts linear resolution by 23%.
- Better video: Provides higher movie framerates (1080/60p versus 1080/30p).
- Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
- Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
- More compact: Is smaller (110x63mm vs 117x67mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight (by 67g or 19 percent) and is thus easier to take along.
- Easier travel charging: Can be conveniently charged via its USB port.
- Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
- More heavily discounted: Has been on the market for longer (launched in August 2014).
If the number of relative strengths (bullet points above) is taken as a guide, the A5100 is the clear winner of the contest (9 : 3 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 wedding photographer will view the differences between cameras in a way that diverges from the perspective of a travel photog, and a person interested in cityscapes has distinct needs from a macro 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-A2 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 the spec-sheets of cameras can offer a general idea of their imaging potential, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the X-A2 or the A5100. 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 (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.
|1.||Fujifilm X-A2||4/5||..||..||..||4.5/5||4.5/5||Jan 2015||399||ebay.com|
|2.||Sony A5100||4.5/5||+||..||..||4.5/5||5/5||Aug 2014||549||ebay.com|
|3.||Fujifilm X-A5||..||+||4.1/5||..||4/5||3.5/5||Jan 2018||399||ebay.com|
|4.||Fujifilm X70||4.5/5||..||..||76/100||4.5/5||4.5/5||Jan 2016||799||ebay.com|
|5.||Fujifilm X-A3||..||..||..||74/100||4.5/5||4/5||Aug 2016||399||ebay.com|
|6.||Fujifilm X-A10||..||..||..||..||4/5||4/5||Dec 2016||399||ebay.com|
|7.||Fujifilm X-E2S||4.5/5||..||..||77/100||4.5/5||4.5/5||Jan 2016||699||ebay.com|
|8.||Fujifilm X-T10||4.5/5||+ +||..||80/100||5/5||5/5||May 2015||799||ebay.com|
|9.||Fujifilm X-A1||..||..||..||..||4.5/5||4.5/5||Sep 2013||399||ebay.com|
|10.||Fujifilm X-E2||4/5||..||..||80/100||4.5/5||5/5||Oct 2013||999||ebay.com|
|11.||Fujifilm X-M1||3/5||+||..||77/100||4.5/5||4.5/5||Jun 2013||699||ebay.com|
|12.||Fujifilm X-E1||4/5||+ +||..||79/100||4.5/5||4.5/5||Sep 2012||999||ebay.com|
|13.||Sony A5000||3/5||+||..||..||4.5/5||4.5/5||Jan 2014||449||ebay.com|
|14.||Sony A6000||5/5||+||4.5/5||80/100||4.5/5||5/5||Feb 2014||599||ebay.com|
|15.||Sony A3000||3/5||+||..||..||4/5||4/5||Aug 2013||329||ebay.com|
|16.||Sony NEX-3N||3/5||..||..||..||4.5/5||4.5/5||Feb 2013||499||ebay.com|
|17.||Sony NEX-3||..||..||..||70/100||4.5/5||4/5||May 2010||599||ebay.com|
|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. Hence, a score should always be seen in the context of the camera's market launch date and its price, and comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.
Other camera comparisons
Did this review help to inform your camera decision process? If you would like to see a different side-by-side camera review, just use the search menu below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.
- Canon G1 X Mark II vs Sony A5100
- Canon SL1 vs Fujifilm X-A2
- Canon T100 vs Sony A5100
- Fujifilm X-A2 vs Fujifilm X-Pro2
- Fujifilm X-A2 vs Olympus E-P5
- Fujifilm X-A2 vs Panasonic FZ1000
- Fujifilm X-A2 vs Panasonic GH5s
- Fujifilm X-A2 vs Sony HX95
- Leica S2 vs Sony A5100
- Olympus E-PL10 vs Sony A5100
- Panasonic FZ1000 vs Sony A5100
- Sony A5100 vs Sony NEX-6
Specifications: Fujifilm X-A2 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-A2||Sony A5100|
|Camera Type||Mirrorless system camera||Mirrorless system camera|
|Camera Lens||Fujifilm X mount lenses||Sony E mount lenses|
|Launch Date||January 2015||August 2014|
|Launch Price||USD 399||USD 549|
|Sensor Specs||Fujifilm X-A2||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||16 Megapixels||24 Megapixels|
|Image Resolution||4896 x 3264 pixels||6000 x 4000 pixels|
|Pixel Pitch||4.80 μm||3.91 μm|
|Pixel Density||4.34 MP/cm2||6.55 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||1080/30p Video||1080/60p Video|
|ISO Setting||200 - 6,400 ISO||100 - 25,600 ISO|
|ISO Boost||100 - 25,600 ISO||no Enhancement|
|Image Processor||EXR Processor II||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-A2||Sony A5100|
|Viewfinder Type||no viewfinder||no viewfinder|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0inch||3.0inch|
|LCD Resolution||920k dots||922k dots|
|LCD Attachment||Tilting screen||Tilting screen|
|Touch Input||no Touchscreen||Touchscreen|
|Shooting Specs||Fujifilm X-A2||Sony A5100|
|Focus System||Contrast-detect AF||On-Sensor Phase-detect|
|Manual Focusing Aid||Focus Peaking||Focus Peaking|
|Max Shutter Speed (mechanical)||1/4000s||1/4000s|
|Continuous Shooting||5.6 shutter flaps/s||6 shutter flaps/s|
|Fill Flash||Built-in Flash||Built-in Flash|
|Storage Medium||SDXC cards||MS or SDXC cards|
|Single or Dual Card Slots||Single card slot||Single card slot|
|UHS card support||UHS-I||UHS-I|
|Connectivity Specs||Fujifilm X-A2||Sony A5100|
|External Flash||Hotshoe||no Hotshoe|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||mini HDMI||micro HDMI|
|Wifi Support||Wifi built-in||Wifi built-in|
|Near-Field Communication||no NFC||NFC built-in|
|Body Specs||Fujifilm X-A2||Sony A5100|
|Battery Life (CIPA)||410 shots per charge||400 shots per charge|
|In-Camera Charging||no USB charging||USB charging|
117 x 67 x 40 mm
(4.6 x 2.6 x 1.6 in)
110 x 63 x 36 mm
(4.3 x 2.5 x 1.4 in)
|Camera Weight||350 g (12.3 oz)||283 g (10.0 oz)|
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