When comparing Ricoh Theta M15 vs 360Fly 4K, the Slant community recommends 360Fly 4K for most people. In the question“What are the best 360-degree cameras?” 360Fly 4K is ranked 8th while Ricoh Theta M15 is ranked 16th. The most important reason people chose 360Fly 4K is:
Since there's only one lens which captures with a 360x240 degrees field of view, there's no stitching being done.
Specs
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Pros
Pro Easy to use
Theta has a button in the middle of the camera body that takes 360-degree images when pressed. This makes using the device very straightforward, if not self explanatory.
Pro Excellent portability
Theta is lightweight at just 95 g and small at 42 mm (W) x 129 mm (H) x 22.8 mm. This means that it can be easily carried around in a pocket or bag with practically no additional weight. Theta is therefore very flexible thanks to its size.
Pro Currently available, unlike other options
The Ricoh Theta is already shipping and has an established ecosystem of web apps, mobile apps, and strong user communities on Facebook and Google+. Most other options aren't available yet for purchase.
Pro Good value for money
This 360 cam is one of the cheapest of its kind, it's a perfect size , and it can be connected to the user's smartphone. All of this, plus the ability to capture the world at 360°, for a very reasonable price.
Pro Good accompanying software
Theta comes with Windows and Mac applications for managing captured footage, as well as iOS and Android companion apps that allow images to be taken remotely. Together these render the device extremely useful.
Pro No stitching
Since there's only one lens which captures with a 360x240 degrees field of view, there's no stitching being done.
Pro Suitable for recording sports or other outdoor activities
360Fly is dust-resistant (IP6X certified), water-resistant up to 50 meters, and shock-resistant up to 1.5M. The exterior is also rubberized to make it harder for it to split when handled with wet hands.
This makes it a great device for recording extreme sports or general outdoor recording.
Pro Extremely easy to edit a video or photo once it's captured
After shooting a clip and before sharing it, the app will let you choose which sections of a video to include in the final shared version, add music and even adjust the playback speed of your video or parts of it.
Pro Capable of capturing spherical videos
The 360Fly 4K can be combined with another camera so to shoot completely spherical, immersive videos.
Pro Supports live preview
When the camera is turned on, so is the camera's Wi-Fi and Bluetooth which are used to connect to a mobile phone that has the camera's app installed. Once that's done you can then change the app's settings and have a live view of what the camera is capturing straight from the app.
Cons
Con Poor image quality for the asking price
While there's no official word on sensors and image processors, expert reviews suggest that it's within the 5-6.5MP range. Theta produces reasonable images, but better images should be expected, given its price range.
Con Lack of expandable memory
Theta comes with 4 GB built-in memory which can only take videos of 4-5 minutes. Sadly there is no way to expand this memory as there is no external card slot.
Con Poor lighting adjustments
The visibility of images is poor in darker lighting.
Con Issues with recorded audio
Audio captured more than a few feet from the camera sounds rather low and muffled. There's also no way to add an external mic.
Con There's purple fringing around subjects in high-contrast areas
There's some purple fringing when there's a high contrast in the video or photo. This is not very visible on smartphone screens unless you zoom in. However, it's very visible on computer monitors.
Con The view is not spherical
The 360Fly 4K has only one lens which makes it a 360x240 degree camera. Because of this you lose about 120 degrees below the camera.
