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Sony A6400 vs RX1

The Sony Alpha A6400 and the Sony Cyber-shot DSC-RX1 are two enthusiast cameras that were announced, respectively, in January 2019 and September 2012. The A6400 is a mirrorless interchangeable lens camera, while the RX1 is a fixed lens compact. The cameras are based on an APS-C (A6400) and a full frame (RX1) 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 versus Sony RX1
Sony A6400 Sony RX1
Mirrorless system camera Fixed lens compact camera
Sony E mount lenses 35mm f/2.0
24 MP, APS-C Sensor 24 MP, Full Frame Sensor
4K/30p Video 1080/60p Video
ISO 100-32,000 (100 - 102,400) ISO 100-25,600 (50 - 102,400)
Electronic viewfinder (2359k dots) Viewfinder optional
3.0 LCD, 922k dots 3.0 LCD, 1229k dots
Tilting touchscreen Fixed screen (not touch-sensitive)
11 shutter flaps per second 5 shutter flaps per second
410 shots per battery charge270 shots per battery charge
120 x 67 x 50 mm, 403 g 113 x 65 x 70 mm, 482 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Sony Alpha A6400 and the Sony Cyber-shot DSC-RX1? 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

An illustration of the physical size and weight of the Sony A6400 and the Sony RX1 is provided in the side-by-side display below. 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.

Size Sony A6400 vs Sony RX1
Compare A6400 versus RX1 top
Comparison A6400 or RX1 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony RX1 is notably smaller (9 percent) than the Sony A6400. In this context, it is worth noting that neither the A6400 nor the RX1 are weather-sealed.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the RX1 has a lens built in, whereas the A6400 is an interchangeable lens camera that requires a separate lens. Attaching the latter will add extra weight and bulk to the setup. You can compare the optics available for the A6400 and their specifications in the Sony E-Mount Lens Catalog.

Concerning battery life, the A6400 gets 410 shots out of its NP-FW50 battery, while the RX1 can take 270 images on a single charge of its NP-BX1 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. If you want to switch the focus of the display and review another camera pair, just select a new right or left comparator from among the camera models in the table. Alternatively, you can also move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.

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Body Specifications
  Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life 1
Weather
Sealing
Camera
Launch 2
Launch
Price (USD)
Street
Price
 
Sony A6400 120 mm 67 mm 50 mm 403 g 410 n Jan 2019 899 i
 
Sony RX1 113 mm 65 mm 70 mm 482 g 270 n Sep 2012 2,799i
 
Canon 2000D 129 mm 101 mm 78 mm 475 g 500 n Feb 2018 449 i
 
Canon M50 116 mm 88 mm 59 mm 390 g 235 n Feb 2018 779 i
 
Canon M5 116 mm 89 mm 61 mm 427 g 295 n Sep 2016 979 i
 
Leica C-LUX 113 mm 67 mm 46 mm 340 g 370 n Jun 2018 1,049 i
 
Nikon D5300 125 mm 98 mm 76 mm 480 g 600 n Oct 2013 799i
 
Sony A6100 120 mm 67 mm 59 mm 396 g 420 n Aug 2019 749 i
 
Sony A6300 120 mm 67 mm 49 mm 404 g 400 Y Feb 2016 999i
 
Sony RX1R II 113 mm 65 mm 72 mm 507 g 220 n Oct 2015 3,299 i
 
Sony A6000 120 mm 67 mm 45 mm 344 g 360 n Feb 2014 599i
 
Sony A3000 128 mm 91 mm 85 mm 411 g 470 n Aug 2013 329i
 
Sony RX1R 113 mm 65 mm 70 mm 482 g 270 n Jun 2013 2,799i
 
Sony NEX-6 120 mm 67 mm 43 mm 345 g 360 n Sep 2012 999i
 
Sony NEX-7 120 mm 67 mm 43 mm 400 g 430 n Aug 2011 1,349i
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.

The price is, of course, an important factor in any camera decision. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. 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.

Sensor comparison

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. 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.

Of the two cameras under consideration, the Sony A6400 features an APS-C sensor and the Sony RX1 a full frame sensor. The sensor area in the RX1 is 132 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.5 and 1.0. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Sony A6400 and Sony RX1 sensor measures

Even though the RX1 has a larger sensor, both cameras offer the same resolution of 24 megapixels. This implies that the RX1 has a lower pixel density and larger individual pixels (with a pixel pitch of 5.96μm 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 much more recent (by 6 years and 4 months) than the RX1, and its sensor will have benefitted from technological advances during this time that at least partly compensate for the smaller pixel size.

The A6400 has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

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 Sony Cyber-shot DSC-RX1 are ISO 100 to ISO 25600, with the possibility to increase the ISO range to 50-102400.

A6400 versus RX1 MP

For many cameras, data on sensor performance has been reported by DXO Mark. 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"). Of the two cameras under consideration, the RX1 has a markedly higher DXO score than the A6400 (overall score 10 points higher), which will translate into better image quality. The advantage is based on 1.1 bits higher color depth, 0.7 EV in additional dynamic range, and 0.8 stops in additional low light sensitivity. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.

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Sensor Characteristics
  Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
 
Sony A6400 APS-C 24.0 6000 40004K/30p2413.6143183
 
Sony RX1 Full Frame 24.0 6000 40001080/60p25.114.3253493
 
Canon 2000D APS-C 24.0 6000 40001080/30p22.611.9100971
 
Canon M50 APS-C 24.0 6000 40004K/24p........
 
Canon M5 APS-C 24.0 6000 40001080/60p23.412.4126277
 
Leica C-LUX 1-inch 20.0 5472 36484K/30p........
 
Nikon D5300 APS-C 24.0 6000 40001080/60p24.013.9133883
 
Sony A6100 APS-C 24.0 6000 40004K/30p........
 
Sony A6300 APS-C 24.0 6000 40004K/30p24.413.7143785
 
Sony RX1R II Full Frame 42.2 7952 53041080/60p25.813.9320497
 
Sony A6000 APS-C 24.0 6000 40001080/60p24.113.1134782
 
Sony A3000 APS-C 19.8 5456 36321080/60i23.712.8106878
 
Sony RX1R Full Frame 24.0 6000 40001080/60p25.013.6253791
 
Sony NEX-6 APS-C 16.0 4912 32641080/60i23.713.1101878
 
Sony NEX-7 APS-C 24.0 6000 40001080/60i24.113.4101681

Many modern cameras cannot only take still pictures, but also record videos. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, but the A6400 provides a higher video resolution than the RX1. It can shoot video footage at 4K/30p, while the RX1 is limited to 1080/60p.

Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. For example, the A6400 has an electronic viewfinder (2359k dots), which can be very helpful when shooting in bright sunlight. In contrast, the RX1 relies on live view and the rear LCD for framing. That said, the RX1 can be equipped with an optional viewfinder – the FDA-EV1MK. The adjacent table lists some of the other core features of the Sony A6400 and Sony RX1 along with similar information for a selection of comparators.

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Core Features
  Camera
Model
Viewfinder
(Type or
000 dots)
Control
Panel
(yes/no)
LCD
Size
(inch)
LCD
Resolution
(000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Mech
Shutter
Speed
Shutter
Flaps
(1/sec)
Built-in
Flash
(yes/no)
Built-in
Image
Stab
 
Sony A64002359 n 3.0 922 tilting Y 1/4000s 11.0 Y n
 
Sony RX1optional n 3.0 1229 fixed n 1/4000s 5.0 Y n
 
Canon 2000Doptical n 3.0 920 fixed n 1/4000s 3.0 Y n
 
Canon M502360 n 3.0 1040 swivel Y 1/4000s 10.0 Y n
 
Canon M52360 n 3.2 1620 tilting Y 1/4000s 9.0 Y n
 
Leica C-LUX2330 n 3.0 1240 fixed Y 1/2000s 10.0 Y Y
 
Nikon D5300optical n 3.2 1037 swivel n 1/4000s 5.0 Y n
 
Sony A61001440 n 3.0 922 tilting Y 1/4000s 11.0 Y n
 
Sony A63002359 n 3.0 922 tilting n 1/4000s 11.0 Y n
 
Sony RX1R II2360 n 3.0 1229 tilting n 1/4000s 5.0 n n
 
Sony A60001440 n 3.0 922 tilting n 1/4000s 11.0 Y n
 
Sony A3000202 n 3.0 230 fixed n 1/4000s 2.5 Y n
 
Sony RX1Roptional n 3.0 1229 fixed n 1/4000s 5.0 Y n
 
Sony NEX-62359 n 3.0 921 tilting n 1/4000s 10.0 Y n
 
Sony NEX-72359 n 3.0 921 tilting n 1/4000s 10.0 Y n

One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The A6400 has a touchscreen, while the RX1 has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.

The A6400 has an articulated LCD that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in snapping selfies. In contrast, the RX1 does not have a selfie-screen.

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 A6400 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).

Concerning the storage of imaging data, both the A6400 and the RX1 write their files to SDXC or Memory Stick PRO Duo cards. The A6400 supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the RX1 cannot take advantage of Ultra High Speed SD cards.

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 Sony Cyber-shot DSC-RX1 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
  Camera
Model
Hotshoe
Port
Internal
Microphone
Internal
Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
 
Sony A6400YstereomonoY-micro2.0YYY
 
Sony RX1YstereomonoY-mini2.0---
 
Canon 2000DYmonomono--mini2.0YY-
 
Canon M50YstereomonoY-micro2.0YYY
 
Canon M5YstereomonoY-mini2.0YYY
 
Leica C-LUX-stereomono--micro2.0Y--
 
Nikon D5300YstereomonoY-mini2.0Y--
 
Sony A6100YstereomonoY-micro2.0YYY
 
Sony A6300YstereomonoY-micro2.0YY-
 
Sony RX1R IIYstereomonoY-micro2.0YY-
 
Sony A6000Ystereomono--micro2.0YY-
 
Sony A3000Ystereomono--mini2.0---
 
Sony RX1RYstereomonoY-mini2.0---
 
Sony NEX-6Ystereomono--mini2.0Y--
 
Sony NEX-7YstereomonoY-mini2.0---

It is notable that the A6400 offers wifi support, while the RX1 does not. Wifi can be a very convenient means to transfer image data to an off-camera location.

The A6400 is a recent model that features in the current product line-up of Sony. In contrast, the RX1 has been discontinued (but can be found pre-owned on eBay). As a replacement in the same line of cameras, the RX1 was succeeded by the Sony RX1R. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Sony website.

Review summary

So how do things add up? Is there a clear favorite between the Sony A6400 and the Sony RX1? Which camera is better? Below is a summary of the relative strengths of each of the two contestants.


Advantages of the Sony Alpha A6400:

  • Better video: Provides higher definition movie capture (4K/30p vs 1080/60p).
  • Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
  • Easier framing: Has an electronic viewfinder for image composition and settings control.
  • More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
  • Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
  • More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
  • Faster burst: Shoots at higher frequency (11 vs 5 flaps/sec) to capture the decisive moment.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • More flexible: Accepts interchangeable lenses, so that lens characteristics can be altered.
  • Longer lasting: Can take more shots (410 versus 270) on a single battery charge.
  • Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
  • Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
  • Easier wireless transfer: Supports Bluetooth for image sharing without cables.
  • Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
  • More modern: Reflects 6 years and 4 months of technical progress since the RX1 launch.


Arguments in favor of the Sony Cyber-shot DSC-RX1:

  • Better image quality: Scores markedly higher (10 points) in the DXO overall evaluation.
  • Richer colors: Generates noticeably more natural colors (1.1 bits more color depth).
  • More dynamic range: Captures a broader range of light and dark details (0.7 EV of extra DR).
  • Better low-light sensitivity: Can shoot in dim conditions (0.8 stops ISO advantage).
  • More detailed LCD: Has a higher resolution rear screen (1229k vs 922k dots).
  • Ready to shoot: Has an integrated lens, whereas the A6400 necessitates an extra lens.
  • More heavily discounted: Has been around for much longer (launched in September 2012).

If the number of relative strengths (bullet points above) is taken as a guide, the A6400 is the clear winner of the match-up (15 : 7 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.

A6400 15:07 RX1

How about other alternatives? Do the specifications of the Sony A6400 and the Sony RX1 place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera and Best Prime Lens Compact Camera listings whether the two cameras rank among the cream of the crop.

In any case, while the specs-based evaluation of cameras can be instructive in revealing their potential as photographic tools, it says little about, for example, the shooting experience and imaging performance of the A6400 and the RX1 in practical situations. 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 hands-on reviews by experts 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.

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Review Scores
  Camera
Model
camera
  labs  
dp
review  
ephoto
  zine  
imaging
resource
photography
  blog  
Camera
Launch
Launch
Price (USD)
Street
Price
 
Sony A6400+85/1004.5/5..4/5 Jan 2019 899 i
 
Sony RX1..79/1004/54.5/54.5/5 Sep 2012 2,799i
 
Canon 2000Do..3.5/5..3.5/5 Feb 2018 449 i
 
Canon M50+79/100..4/53.5/5 Feb 2018 779 i
 
Canon M5+82/1004/54.5/54/5 Sep 2016 979 i
 
Leica C-LUX....4.5/5..4/5 Jun 2018 1,049 i
 
Nikon D5300+ +79/1004.5/54.5/54.5/5 Oct 2013 799i
 
Sony A6100..82/1004/5..5/5 Aug 2019 749 i
 
Sony A6300+85/1005/55/55/5 Feb 2016 999i
 
Sony RX1R II..82/100..o4.5/5 Oct 2015 3,299 i
 
Sony A6000+80/1004.5/55/55/5 Feb 2014 599i
 
Sony A3000+..4/54.5/54/5 Aug 2013 329i
 
Sony RX1R....4/5o4.5/5 Jun 2013 2,799i
 
Sony NEX-6+ +78/1004.5/55/54.5/5 Sep 2012 999i
 
Sony NEX-7+ +81/1004.5/55/55/5 Aug 2011 1,349i
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The review scores listed above should be treated 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, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

Sony A6400:
Check Amazon price
Sony RX1:
Check Ebay offers

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. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.

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    Specifications: Sony A6400 vs Sony RX1

    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 Specifications
    Camera Model Sony A6400 Sony RX1
    Camera Type Mirrorless system camera Fixed lens compact camera
    Camera Lens Sony E mount lenses 35mm f/2.0
    Launch Date January 2019 September 2012
    Launch Price USD 899 USD 2,799
    Sensor Specs Sony A6400 Sony RX1
    Sensor Technology CMOS CMOS
    Sensor Format APS-C Sensor Full Frame Sensor
    Sensor Size 23.5 x 15.6 mm 35.8 x 23.8 mm
    Sensor Area 366.6 mm2 852.04 mm2
    Sensor Diagonal 28.2 mm 43 mm
    Crop Factor 1.5x 1.0x
    Sensor Resolution 24 Megapixels 24 Megapixels
    Image Resolution 6000 x 4000 pixels 6000 x 4000 pixels
    Pixel Pitch 3.91 μm 5.96 μm
    Pixel Density 6.55 MP/cm2 2.82 MP/cm2
    Moiré control Anti-Alias filter Anti-Alias filter
    Movie Capability 4K/30p Video 1080/60p Video
    ISO Setting 100 - 32,000 ISO 100 - 25,600 ISO
    ISO Boost 100 - 102,400 ISO 50 - 102,400 ISO
    Image Processor BIONZ X BIONZ X
    DXO Sensor Quality (score) 83 93
    DXO Color Depth (bits) 24 25.1
    DXO Dynamic Range (EV) 13.6 14.3
    DXO Low Light (ISO) 1431 2534
    Screen Specs Sony A6400 Sony RX1
    Viewfinder Type Electronic viewfinder Viewfinder optional
    Viewfinder Field of View 100%
    Viewfinder Magnification 0.70x
    Viewfinder Resolution 2359k dots
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.0inch
    LCD Resolution 922k dots 1229k dots
    LCD Attachment Tilting screen Fixed screen
    Touch Input Touchscreen no Touchscreen
    Shooting Specs Sony A6400 Sony RX1
    Focus System On-Sensor Phase-detect Contrast-detect AF
    Manual Focusing AidFocus PeakingFocus Peaking
    Max Shutter Speed (mechanical) 1/4000s 1/4000s
    Continuous Shooting 11 shutter flaps/s 5 shutter flaps/s
    Electronic ShutterYESno E-Shutter
    Fill Flash Build-in Flash Build-in Flash
    Storage Medium MS or SDXC cards MS or SDXC cards
    Second Storage Option Single card slot Single card slot
    UHS card support UHS-I no
    Connectivity Specs Sony A6400 Sony RX1
    External Flash Hotshoe Hotshoe
    USB Connector USB 2.0 USB 2.0
    HDMI Port micro HDMI mini HDMI
    Microphone Port External MIC port External MIC port
    Wifi Support Wifi built-in no Wifi
    Near-Field Communication NFC built-in no NFC
    Bluetooth Support Bluetooth built-in no Bluetooth
    Body Specs Sony A6400 Sony RX1
    Battery Type NP-FW50 NP-BX1
    Battery Life (CIPA)410 shots per charge270 shots per charge
    In-Camera Charging USB charging USB charging
    Body Dimensions 120 x 67 x 50 mm
    (4.7 x 2.6 x 2.0 in)
    113 x 65 x 70 mm
    (4.4 x 2.6 x 2.8 in)
    Camera Weight 403 g (14.2 oz) 482 g (17.0 oz)

    Did you notice an error on this page? If so, please get in touch, so that we can correct the information.

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