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Comparison SJCAM SJ7 Star vs SJCAM SJ6 Legend Air

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SJCAM SJ7 Star
SJCAM SJ6 Legend Air
SJCAM SJ7 StarSJCAM SJ6 Legend Air
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4K video recording. Withstands diving to a depth of 30 m (in the aquabox). Gyro stabilization system. 2 inch touch screen. Ability to connect an external microphone. Remote control from a smartphone. DVR mode.
Video filming in high resolution. Withstands diving to a depth of 30 m (in the aquabox). Gyro stabilization system. 2 inch touch screen. Remote control from a smartphone. DVR mode.
Product typeaction cameraaction camera
Body typeconventionalconventional
Thread 1/4" (for tripod)
Dust-, moisture-proof of case
IP68 /dive up to 30 m/
IP68 /dive up to 30 m/
Filming
HD (720p)1280x720 px 60 fps1280x720 px 60 fps
Full HD (1080p)1920x1080 px 60 fps1920x1080 px 60 fps
Quad HD2704x1520 px 30 fps
2880x2160 px 24 fps /2560x1440 px 30 fps/
Ultra HD (4K)3840x2160 px 30 fpsno support
Slow motion
120 fps /720p/
120 fps /720p/
Field of view166 °166 °
Digital stabilization
Sound recording
Megapixels1614
Photo resolution4608x3456 px4608x3456 px
Capabilities
serial photo shoot
time lapse
serial photo shoot
time lapse
Features
Display
2 "
320x240 px
touch
2 "
320x240 px
touch
Connection
Wi-Fi
HDMI output
Wi-Fi
HDMI output
Speaker
Max. memory card capacity128 GB128 GB
Battery
Typeremovableremovable
Battery modelSJ-BAT-SJ7SJ-BAT-SJ6
Capacity1000 mAh1000 mAh
General
In box
protective case
mounting frame
helmet mount
flat mount
3-axis mount
bicycle / moto handlebar
protective case
mounting frame
helmet mount
flat mount
3-axis mount
bicycle / moto handlebar
Dimensions60x41x25 mm60x41x25 mm
Weight74 g84 g
Color
Added to E-Catalogmay 2017may 2017

Thread 1/4" (for tripod)

The presence of a 1/4" threaded socket on the camera body. It is this size that is standard for modern tripods and is used in most of these devices. So this feature allows you to mount the camera on a tripod without using adapters and other additional equipment.

Quad HD

The ability of the camera to shoot QuadHD video.

This standard includes an extensive set of resolutions — from 1440 to 3456 pixels horizontally and from 1440 to 2160 pixels vertically, with almost two dozen intermediate options. It is a rather specific transitional option between the relatively inexpensive FullHD 1080p and the demanding UltraHD 4K, allowing you to shoot higher resolution video than 1080p without significantly increasing the cost of equipment. Note that pure QuadHD resolutions are rare in TVs and monitors, but modern technologies make it possible to comfortably watch videos of this format on any high-resolution screen.

Another important parameter given in this paragraph is the frame rate. The higher it is, the smoother the movement in the frame will be, and the details in dynamic scenes will be visible clearly. For example, a filming speed of 25 fps or 30 fps approximates the standard frame rate in film and television; such an image is quite viewable, but fast-moving objects in the frame will look blurry. With an increase in speed to 60 fps, this effect becomes almost imperceptible. The highest QuadHD frame rate found in modern action cameras is 120 fps; this frequency is used when shooting slow-motion video (as well as models with a frequency of 100 fps) because at a n...ormal playback speed, 60 fps is enough.

Ultra HD (4K)

The ability of the camera to shoot Ultra HD 4K video.

This format covers several resolutions in which the horizontal frame size is approximately 4K pixels. The most popular in action cameras is 3840x2160 (twice the FullHD frame on each side), but there are other options — for example, 3840x1920, corresponding to an aspect ratio of 2:1. In general, 4K is a kind of successor to Full HD: among HD standards that surpass Full HD, UltraHD is the most popular, in particular, many advanced TVs are produced with 3840x2160 screens. On the other hand, this format is quite demanding in terms of processing power and memory, so it is relatively rare in action cameras, mainly among premium models.

Another important parameter given in this paragraph is the frame rate. The higher it is, the smoother the movement in the frame will be, and the details in dynamic scenes will be visible clearly. However, in UltraHD mode, most modern action cameras produce a very low frame rate — most often 30 fps, and in some models 24 fps or even 15 fps. This video is quite viewable, but fast movement in the frame may look blurry. There are cameras capable of shooting UltraHD at a solid speed of 60 fps — the blurring effect during such shooting is almost imperceptible. However, such a model cost is high.

Megapixels

The number of megapixels in the action camera sensor, in other words, the resolution of this sensor(1 megapixel is 1 million photosensitive points).

There is an opinion that the higher the resolution, the better the image quality. It is true from the point of view that manufacturers are trying to install high-resolution sensors in advanced cameras. At the same time, there are no strict dependencies here, and from the technical point of view, the number of megapixels determines only the maximum image resolution that can be captured using this sensor. The quality of this picture will depend both on several features of the sensor itself (size, type, special design solutions), and the specs of the camera. So when choosing, you should focus not so much on the resolution of the image sensor, but on the general class of the camera and reviews with examples of footage.

Battery model

The model name of the proprietary battery used in the camera. Knowing this name, you can easily find a spare or replacement battery for the device.
SJCAM SJ7 Star often compared
SJCAM SJ6 Legend Air often compared