Computer and Tech


If the GoPro Hero5 Black is the present undisputed heavyweight champion of the 4K motion digital camera world, the scores of cheaper rivals which can be at present coming by way of the ranks are the younger and feisty contenders for its crown.

However to date none of them has managed to topple GoPro's comparatively costly providing, even when cheaper rivals declare to boast comparable spec-for-spec attributes, confirmed sensors and comparable expertise.

Cameras from Yi Expertise (notably the YI 4K Action Camera), Olfi and Veho have come shut by way of design and efficiency, however have usually buckled within the remaining spherical.

Regardless of the scores of battered and bruised challengers earlier than it, nonetheless, Chinese language producer SJCAM thinks it has what it takes to bother the champ, and its newest SJ7 Star mannequin boasts the kind of options that, on paper, seem to make it a contender.


  • 4K video seize at 30fps
  • 12MP stills (as much as 16MP by way of interpolation)
  • 166-degree broad angle lens

Like its GoPro rival, the SJCAM SJ7 Star gives an interactive rear touchscreen by way of which you’ll be able to management many of the performance. At two inches broad, it's simple to view and to navigate.

There's additionally the choice to obtain the free SJCAM app, which is obtainable for iOS and Android and connects by way of the smartphone's Wi-Fi, for previewing pictures and quickly modifying settings.

Anticipate loads of video decision choices, with 720p and 920p at 120fps catering for the intense slow-motion moments, 1080p at 120fps bumping up the decision considerably, and a pair of.7k at 60fps or 30fps and 4K at 30fps providing the sharpest footage.

The digital camera additionally packs gyro stabilisation, which goals to digitally out bumps in video recording

The SJ7 Star matches the aforementioned GoPro pound for pound, and even data 4K natively (somewhat than by way of interpolation), that means picture high quality and readability are superior to the earlier SJ6 mannequin.

Nevertheless, the twice-the-price GoPro Hero 5 nonetheless manages to maintain the higher hand in quite a few areas, together with its built-in waterproof casing (there's no want for a separate case any extra), ProTune video choices (the dream for anybody wanting larger management in post-production), HDR pictures and voice management.

The digital camera additionally packs gyro stabilization, which goals to digitally out bumps in video recording, though that is solely accessible in 1080p at 30fps or decrease resolutions.

Which means full 4K and a pair of.7K can really feel bumpy, whereas super-smooth, super-slow-motion clips could possibly be out of the query.

Design and equipment

  • Three shade choices (black, gray and rose gold)
  • Loads of fundamental mounts within the field
  • Waterproof casing included

There's not an excessive amount of to put in writing house about by way of design. The SJCAM SJ7 Star is a matchbox-sized motion digital camera with all of the glamor of, nicely, a matchbox.

It comes completed in all-over gray, or with a black (as seen right here) or rose gold facade, however basically it's a small rectangular field with a tiny lens on the entrance, two rubber buttons (settings and energy), a shutter button on the highest and a touchscreen on the rear.

On the underside there's a small hinged door that homes the 1000mAh lithium ion battery pack, which isn't as highly effective as these discovered within the aforementioned rivals, together with the Yi 4K and GoPro choices.

The SJCAM SJ7 Star is customary from laborious plastics and rubber, and feels pretty substantial as it’s however the packaging comprises quite a few circumstances, together with a water-resistant case that permits the digital camera to be taken to depths of 30m.

SJCAM additionally features a touchscreen hinged again door that can be utilized at depths as much as 3m, however its plastic is way too powerful and rigid to permit correct use of the rear display screen.

The casings and equipment use a GoPro mounting system, with many that includes 3M adhesive pads, however the plastics used really feel low-cost and brittle.

The waterproof casing, for instance, makes use of a small latch and hinge mechanism for opening and shutting. That tiny plastic hinge requires some fairly sturdy nails to open it the primary few instances, and the method can really show painful in case your fingers are chilly or moist.

Construct and dealing with

  • Responsive touchscreen
  • Equipment really feel low-cost

Charging the SJCAM SJ7 Star, and switch of recordsdata, is taken care of by way of a regular mini-USB cable, which is nice information if, like us, you’ve gotten a great deal of cables hanging round.

We discovered that GoPro's use of the newer USB-C cables meant we needed to maintain the offered wire beneath lock and key by way of worry of shedding it and never with the ability to cost the digital camera. Not so with SJCAM.

There's no visible indicator to indicate that the unit is charging when it's switched off, that means the display screen needs to be activated in case you'd wish to test standing; an indicator on the entrance of the digital camera wouldn't go amiss.

As soon as totally charged, the SJ7 Star begins up rapidly, and there's little or no delay between start-up and recording or capturing, though the one-button shutter means it's a bit of extra fiddly to change between stills and video.

To take action, it’s important to swipe left or proper on the rear touchscreen, or swipe as much as entry the assorted modes, together with self-timer, video lapse and burst picture choices.

Accessing this menu is fast and simple, with the touchscreen proving responsive, however exiting menus and clicking on the smaller icons will be fiddly, and infrequently takes a number of makes an attempt.

The varied mounts are easy and intuitive to make use of, whereas the thumb screws tighten and loosen and not using a wrestle – a difficulty that usually blights cheaper cameras.

There's additionally a useful common mount that screws into most tripod programs, for many who fancy getting artistic with timelapse images or who merely need regular video footage, though the SJ7 Star should be positioned inside one of many offered circumstances first.


  • f/2.5 lens
  • Sony IMX117 sensor and Ambarella A12S75 chipset
  • Gyro stabilisation solely at 1080p at 30fps and under

For this explicit take a look at, we took the SJCAM SJ7 Star out biking, connected it to a automobile throughout some high-speed tyre testing, and packed it in a rucksack for a sunny hike alongside the seaside.

Biking is at all times a superb exercise for any built-in picture stabilization, and on this case it's very simple to see the outcomes with the expertise activated, because it resulted in footage when connected to some shaky handlebars.

The SJ7 Star additionally helps a fast seize mode, which sees video start recording when the digital camera is switched on, though annoyingly this isn't the case when the digital camera goes into standby mode.

Right here, the shutter have to be depressed as soon as to wake the digital camera up, after which once more to take a picture or begin recording.

A current firmware replace has improved quite a few dealing with points, such because the slow-reacting touchscreen menus and a few crashing, whereas app performance is drastically improved.

On that notice, the app is a pleasant addition to the general bundle; it borrows many components from the GoPro steady, together with the design and structure, and it really works nicely and proves simple to navigate.

The SJ7 Star creates its personal Wi-Fi community, which you’ll be able to simply join your smartphone to in a matter of seconds. As soon as linked, the app then permits all the settings to be adjusted, video resolutions modified and recordsdata browsed and downloaded to the machine.

It feels much more intuitive to regulate settings by way of the app, because the small touchscreen on the again of the digital camera will be fiddly to make use of, and it's irksome to consistently should take away it from one of many protecting housings.

Anticipate battery time to be depleted a lot faster when Wi-Fi is activated, although.

Picture high quality

  • Sharp and colourful video
  • Loads of decision choices
  • Stills endure from barrel distortion

Video high quality from the SJCAM SJ7 Star is fairly good. Brilliant blue skies seem vibrant and picture element is nice, even at 1080p and 30fps; there’s some grain, and edges aren't notably sharp, at this decision, however that's to be anticipated.

There's an nearly bamboozling variety of decision, body fee and look at angle choices to selected from, however we discovered that 1080p at 60fps appeared to supply one of the best trade-off between picture high quality and file dimension, whereas it gives good flexibility in post-production.

Sadly, there isn't an choice to shoot the video flat (to permit for larger flexibility in publish), neither is it doable to seize stills in uncooked. That stated, solely minor tweaking in Lightroom was wanted to create some good imagery, even at 12MP decision, though barrel distortion in stills is a giant difficulty.

Nonetheless recordsdata look fairly good so long as you do not thoughts severe barrel distortion

The newest GoPro incorporates a twin microphone set-up, which does an amazing job of chopping out wind noise for an improved soundtrack. The SJ7 Star's lack of such expertise is noticeable, and the audio captured on a blustery journey was just about unusable.

You'll solely get round 50 minutes of footage when capturing in 4K decision, however this produces by far one of the best image high quality of all of the settings.

We rode round with the digital camera mounted the again of our fixed-gear bicycle on a sunny day, and had been impressed by the vivid colors and sharp element. Within the clip under t's doable to make out the tiniest patterns within the tarmac, even when travelling at velocity.

However the lack of picture stabilization at this decision is a giant downside, because the 4K footage would have been way more nice if the annoying scuttle and shake produced by an uneven street floor was digitally decreased.

Modifying and apps

  • Primary app performance
  • Doesn't enable in-app modifying
  • No video preview choice

Sadly, neither the SJCAM SJ7 Star nor the app permits for any modifying, with the app serving solely as a software to obtain clips and stills to a smartphone and appropriately line up a shot.

That stated, the app is very simple to make use of, and we discovered that our iPhone 7 had no issues connecting to its built-in Wi-Fi, though it could often drop sign, forcing us to re-connect.

It’s doable to evaluation nonetheless imagery and video, in addition to obtain chosen recordsdata to a tool, though the app requires video to be downloaded earlier than it may be previewed, which is a ache.

The shortage of in-app modifying might show a stumbling block for some potential consumers, because the likes of GoPro and YI Expertise perceive that not everybody has the time to sit down down and put a slick edit collectively, and so provide simple options for creating neat clips that may be immediately shared by way of social media.


Native 4K is spectacular in a digital camera at this value level, as is the rear touchscreen and the liberal unfold of cutting-edge options, however there are a few issues that allow the SJCAM SJ7 Star down.

The shortage of picture stabilization when capturing in 4K will possible disappoint anybody trying to seize professional-quality imagery, whereas GoPro's ProTune settings are naturally a giant draw for these trying to get artistic within the edit.

It's additionally not doable to shoot nonetheless imagery in uncooked, and the rear touchscreen will be gradual, and worsening to make use of regularly. Nevertheless, we skilled the same sensation with the far pricier GoPro Hero5 Black, and a firmware replace did make it extra responsive.

We had been impressed with the general video high quality, particularly when stabilized at 1080p, whereas the nonetheless imagery was sharp and completely acceptable for lower-resolution use circumstances after a couple of minor tweaks.

Granted, the SJCAM SJ7 Star lacks among the cool options of the GoPro, similar to voice activation, GPS and the flexibility to make fast and simple video clips by way of a smartphone app, but it surely delivers robust footage at a fraction of the value.


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