Xiaomi Mijia 4K Action Camera

The Name: This is the first Action Camera by Xiaomi’s division Mijia. Don’t get confused, the action camera known as “Xiaomi YI” was manufactured by Yi Technology (who also does YI 4K, YI 4K+, M1,…) and Xiaomi was their distribution partner in China. So the new Xiaomi Mijia 4K Action Camera is their first action camera, they already launched Xiaomi Mijia 360 Panoramic Camera. Let’s take a look:

Xiaom-Mijia-Action-Camera-Symbol

 

Xiaomi Mijia Action Cam Specs

Sensor
Xiaomi Mijia 4K Action Camera uses a 1/2.5″ 8MP Sony Exmor sensor, IMX317. I think that’s the same sensor used in the recently introduced GitUp F1 4K Action Camera and might be the same sensor used in Sony’s top model: FDR-X3000. As the sensor is a little larger than the commonly used 1/2.3″ action cam sensors, I think it benefits low light recording. On the downside it limits photo capabilities, the max. is 8MP in 16:9 whereas the commonly used 12 MP sensors can do 12 MP in 4:3.

Processor
Xiaomi Mijia uses the Ambarella A12 processor, same can be found in many action cameras like SJCAM SJ7, Firefly 8S or Thieye T5. YI 4K Action Camera and GoPro Hero5 use the faster Ambarella A9 processor, furthermore the latest generation Yi 4K+ the Ambarella H2 and SJCAM SJ8 Ambarella H22.

Lens
The lens looks quite large in diameter on the pictures, not sure how it will turn out in the real product. It’s a F2,8 7-glass lens with 145° FOV. Field of view is a bit less than for most action cameras (around 170°) which will benefit in less distortion images by compromising on the wide angle. It also seems that a UV filter is already built in.

Frame Rates & Resolutions
The following resolutions and frame rates are available (some might be added):

  • 4K – 3840 x 2160p (16:9) – 30 fps (real 4K)
  • 1080p – 1920 x 1080p – max. 100 fps
  • 720p – 1280 x 720p – max. 200 fps

Photo Resolution
Photo Resolution will be 8MP, due to the 8MP sensor, Format is .jpg,it seems that RAW will be available.

Image Stabilization
Xiaomi Mijia Action Camera will feature 6-axis electronic image stabilisation. The integrated Bosch BMI160 IMU 3-axis-gyroscpe and a 3-axis-accelerometer is combined with software algorithm to achieve digital image stabilization.

Display
The camera will feature a 2.4″ Touchscreen, which is the largest among action cameras. YI 4K features a 2,19″ touchscreen, whereas GoPro uses a 2″ touchscreen. Similar to YI 4K the camera only shows one button on top and the settings will be done via the screen:

Xiaomi Mijia 4K Action Camera - 2,44" Touchscreen

Xiaomi Mijia 4K Action Camera – 2,44″ Touchscreen

 

Battery
Also the battery seems to be larger than others. Xiaomi Mijia holds a 1450 mAh exchangeable battery that should last 2 hrs of 4K video recording and up to 3 hrs in 1080p. YI uses a 1400 mAh battery whereas GoPro uses a 1120 mAh battery.

In the video at the bottom you can see that Xiaomi lasts way longer than GoPro Hero5 and also quite a bit longer than YI 4K!

Xiaomi Mijia 4K Action Camera - Battery & micro SD-Card Slot

Xiaomi Mijia 4K Action Camera – Battery & micro SD-Card Slot (photos by Sami Luo)

 

Connectivity & Ports
Xiaomi Mijia features wifi to connect with a smartphone app,
and will also hold bluetooth (for further accessories?)
There is a door for ports on one side, Xiaomi Mijia holds a micro USB port,
therefore the use of an external microphone is not possible.
I’m also not sure if the door also covers a HDMI port.
On the bottom there’s a standard 1/4″ photo tripod thread for mounting,
the under water case features the GoPro mount system.

Dimension & Weight:
71.5 × 42.7 × 29.5 mm; 99g.

Xiaomi Mijia Action Camera - Dimensions

Xiaomi Mijia 4K Action Camera – Dimensions

 

Features
Of course features such as time-lapse, burst and timer are included, but we have to wait until it’s out to see the full potential. There’s not more info available currently and no photo with the menu posted.

Included Accessories
It seems there are no accessories included. The packaging list shows camera, battery, USB cable and manual. It seems that an underwater case (which is shown in a picture) will be an optional accessory. Kits will be sold, this is the standard packaging:

Xiaomi Mijia 4K Action Camera - included accessories

Xiaomi Mijia 4K Action Camera – included accessories

 

Xiaomi Mijia 4K Action Camera - underwater case

Xiaomi Mijia 4K Action Camera – underwater case

 

Optional Accessories

There will be an optional gimbal by Xiaomi:

Xiaomi Mijia Action Camera - optimal gimbal

Xiaomi Mijia 4K Action Camera – Optional Gimbal

 

Retailer / Price Comparison

  • Banggood: 128.99 USD – ships Sept. 20th
  • Gearbest: 106.99 USD – Coupon Code: GBXMINI – ships Sept. 14th
  • Geekbuying: 121.99 USD – in stock!
  • TomTop: 129.99 USD – Coupon Code: HTYMJC30
  • Aliexpress: n/a

 

Body, Buttons & Ports

Xiaomi Mijia Action Camera - All sides

Xiaomi Mijia Action Camera – All sides

 

Similar to YI Technology action cameras, Xiaomi Mijia has just one button on top: To power on / off when long pressing and to start video recording or take a picture when short pressing it. All other settings are done via the touch display. Next to the button there is one microphone, the second one is on the side below the port. The microUSB port is behind a sliding door. Also on top you can find a speaker, which is used to playback audio when watching the recorded footage on the screen. Next to the lens on the front side there’s a LED light. On the bottom theres a door for the battery and microSD card slot. Next to it is a 1/4″ standard photo tripod thread for mounting Xiaomi Mijia.

 

Functions & Settings

Xiaomi Mijia Action Camera - Mode Menu & Settings Menu (photos by Sami Luo)

Xiaomi Mijia Action Camera – Mode Menu & Settings Menu (photos by Sami Luo)

 

Modes

There are 9 operating modes you can choose from:

  • Video – for video recording.
  • Time-Lapse Video, where a time-lapse is combined into a video file.
  • Slow Motion, where you can do slow motion recording without editing the footage afterwards.
  • Loop Recording, where short video sequences are recorded and overwritten once the microSD card is full. e.g. to use the camera as dashboard camera
  • Video + Photo, where there are photos taken in a set interval while a video is recorded.
  • Photo – to take pictures.
  • Timer, where you can set a countdown before a photo is taken.
  • Burst, where you can set a a number of photos taken within a timeframe. Max. is 10 pics / second.
  • Time-Lapse Photo, where individual photos are taken, which you can combine to a time-lapse afterwards.

 

Settings

There are not many settings available currently, but might be added with later firmware updates. They are the basics found on many other cameras:

Resolution

  • 4K – 3840 x 2160 – 30 fps
  • 2.5K – 2560 x 1440 – 30fps
  • 1080p – 1920 x 1080 – 100 / 60 / 30 fps
  • 720p – 1280 x 720 – 200 fps

Quality
You can choose super fine, fine and normal which will influence the data rate and the video file size.

Distortion
There is a setting to correct distortion, even tough with the 145° wide-angle lens there should be less distortion than on action cams with the usual 170° FOV.

Mute Recording
to switch off audio recording.

Metering
to select where exposure should be measured on average or in the center of your image.

EV (Exposure Value)
you can manually correct exposure.

WB (White Balance)
where you have the option of pre-defined settings: Water, Tungsten, Daylight and Cloudy.

 

Comparison

Here’s a comparison chart with other action cameras:

 YI 4K+ Action CameraGoPro Hero5 blackSony FDR-X3000YI 4K Action CameraXiaomi Mijia SJCAM SJ7 StarFirefly 8STHIeye T5
YI 4K PlusGoPro Hero5 blackSony FDR X-3000YI 4K Action CameraXiaom-Mijia-Action-Camera-Symbolsj7-star-symbolFirefly 8Sthieye-t5e-symbol
Sensor12 MP Sony
IMX377
12 MP Sony
IMX ?
12 MP Sony
IMX317
12 MP Sony
IMX377
8 MP Sony
IMX317
12 MP Sony
IMX117
12 MP Sony
IMX 117
12 MP Sony
IMX 117
ProcessorAmbarella H2Ambarella A9BIONZ X image processorAmbarella A9Ambarella A12Ambarella A12Ambarella A12Ambarella A12
LensF/2.8, 155° FOVF/2.8, 170° FOV f/2.8, f=17 mmF/2.8, 155° FOVF/2.8, 145° FOVF/2.5, 166° FOVF/2.8, 170° or
F/2.8, 90° version
F/2.5, 170° FOV
4K Resolutionmax. 60fpsmax. 30fpsmax. 30fpsmax. 30fpsmax. 30fpsmax. 30fpsmax. 30fpsmax. 30fps
Bitrate in 4K120 Mbps60 Mbps100 Mbps100 Mbps?70Mbps70Mbps
2.7K Resolutionmax. 60fpsmax. 60fpsmax. 60fps-
(2.5K in 30fps)
max. 30fps
(2.5K in 60fps)
max. 30fps
(2.5K in 60fps)
max. 30fps
(2.5K in 60fps)
1080p Resolutionmax. 120fpsmax. 120fpsmax. 120fpsmax. 120fpsmax. 100fpsmax. 120fpsmax. 120fpsmax. 120fps
720p Resolutionmax. 240fpsmax. 240fpsmax. 240fpsmax. 240fpsmax. 200fpsmax. 200fpsmax. 240fpsmax. 240fps
Photo Resolution12 MP12 MP8 MP12 MP8 MP12 MP12 MP12 MP
RAW photoyes
DNG Format
yes
GPR Format
noyes
DNG Format
yes
? Format
nonono
Display2,19″ Touchscreen2″ Touchscreendata only2,19″ Touchscreen2,44″ Touchscreen2″ Touchscreen2" live view2" live view
Battery (Capacity)1400 mAh1120 mAh1240 mAh1400 mAh1450 mAh1000 mAh1200 mAh1100 mAh
Image Stabilizationyes
up to 4K 30fps
yes
up to 2.7K 60fps
yes (optical)
up to 4K 30fps
yes
up to 2.7K 60fps
yes
up to 1080p 60fps
yes
up to 1080p 60fps
yes
up to 1080p 60fps
yes
up to 1080p 60fps
Wifiyesyesyesyesyesyesyesyes
Bluetoothyesyesyesyesyesyesyesyes
Remote Controlleryes, optional extrayes, optional extrayes, optional extrayes, optional extrayes, optional extrayes, optional extrayes, optional extrayes, optional extra
AppYi Action App
iOS, Android
GoPro App
iOS, Android
Action Cam App
iOS, Android
Yi Action App
iOS, Android
Xiaomi AppSJCAM Zone
iOS, Android
Firefly Cam
iOS, Android
Thieye HD
iOS, Android
StoragemicroSD (up to 128GB)microSD (up to 128GB)microSD (up to 128GB)microSD (up to 128GB)microSD (up to 64GB)microSD (up to 128GB)microSD (up to 128GB)microSD (up to 128GB)
USB PortUSB-C portUSB-C portmicro USB portmicro USB portmicro USB portmini USB portmini USB portmicro USB port
A/V Outputyesyesyesyes?yesyesyes
external Microphoneyes
via USB-C
yes
via USB-C
yes
via 3,5mm
nonoyes
via mini USB
yes
via mini USB
yes
via 2.5mm plug
HDMI Portnomicro HDMImicro HDMInonomicro HDMImicro HDMImicro HDMI
Voice Controlyesyesnomight be addednononono
Special FeatureFacebook Live BroadcastingGPS recordingGPS recordingFacebook Live BroadcastingAluminum Frame Body
Mounts1/4" thread on body
GoPro System on case
GoPro System on frame/case1/4" thread on body
1/4" thread on case
1/4" thread on body
GoPro System on case
1/4" thread on body
GoPro System on case
GoPro System on frame/case1/4" thread on body
GoPro System on case
1/4" thread on body
GoPro System on case
Waterproof40m with case10m without case
60m with case
splash proof without case
60m with case
40m with casewith case30m with case30m with case30m with case
Included AccessoriesMany offers include caseFrameUnderwater Case--
kits will be available later
Case & MountsCase & MountsCase, 2nd battery
Best PriceAliexpress: 269.99 USD
incl. underwater case
Amazon: $399.00Amazon: $368.00Geekbuying: 179.99 USDGearbest: 106.24 USD
Coupon Code: GBCE
Gearbest:
156.99 USD
Coupon Code: ocuyhg
Gearbest: 96.99 USDGearbest: 115.99 USD
Coupon Code: thieyet5e
ReviewReviewReviewReviewReviewReviewReviewReviewReview

 

Join the Xiaomi Mijia Action Camera – Facebook Group for the latest updates!

 

Demo Video

Here’s a comparison video with GoPro Hero5 black:

 

Here’s a comparison video with YI 4K and YI 4K+ by Sami:

 

Here’s a quick walkthrough by Sami:

 

Retailer / Price Comparison

  • Banggood: 128.99 USD – ships Sept. 20th
  • Gearbest: 106.99 USD – Coupon Code: GBXMINI – ships Sept. 14th
  • Geekbuying: 121.99 USD – in stock!
  • TomTop: 129.99 USD – Coupon Code: HTYMJC30
  • Aliexpress: n/a

 

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