Mobius C Lens Impressions and Video

GJHS

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Dash Cam
Mobius A & C, SJ4000, M10, Mini 0806, Innovv C3,4, Xiaomi Yi
The Mobius C Lens was sent to me by GearBest to test and review. While the Mobius C has the new V3 PCB that improves charge time and over-voltage protection and also has the 820mAh battery that gives around 2 hours of runtime, the main difference of this model is the lens, so rather than review the whole camera again, I would prefer to discuss and show the differences to my A lens.

The Mobius now has 3 different lens choices, with different FOVs:
The A Lens field of view (approx.): 86 degrees (1080p)
The B Lens field of view (approx.): 116 degrees (1080p)
The C Lens field of view (approx.): 131 degrees (1080p)

The big improvement of the new C lens, is that it is has noticeably better brightness across the entire frame and has extremely better flare reduction when compared to the B lens. That brightness is very noticeable at night time and I that find night recordings are much brighter than my A lens. That brightness on sunny day recordings can make videos look slight over exposed and I expect some improvements to come from the developer to improve the exposure settings of the C lens setting.

The main disadvantage is the change from a metal to FRP composite lens module. It appears from reports that refocusing the C lens is very difficult because the set screw can dimple the adjustment screw on the lens, making it almost impossible to turn without tools and damage. Some reports here have also claimed that the focus changes when the camera gets hot. In my test, so far, I have not been able to reproduce it and further testing is necessary when the weather is warmer or possibly warming the camera with a hair dryer.

Mobius A
Frame 2015.03.30 18-02-21 (0-06-36.208).jpg
Mobius C
Frame 2015.03.30 18-02-14 (0-06-37.708).jpg

As you can see each FOV has its advantages. Narrow lenses like the A are great because reading number plates numbers is easier and the view is more accurate to what your eyes see in real life. Wide lenses can capture so much more side to side and let more light in at night, though that close call you just filmed, doesn't look so close when filmed on a wide angle lens. Wanting the best of both, I have the C lens and A lens mounted side by side as my full time setup.

Mobius C
Raw: https://mega.co.nz/#!atFF3B5C!aO4CYa_6vTr8hDrbWeEC8-tuhULFJLkEnI2dGbCvMzE

Mobius A
Raw: https://mega.co.nz/#!b40yjD5A!1195UV2J0FguiwpFTFQJLZntMOW6unnfVHIzdASzqBo

Mobius C
Raw: https://mega.co.nz/#!askSDQzJ!XTAVVMX5wD6fRX3EdnR-lI5605wL4wMYfjBXsvP0uSQ

Mobius A
Raw: https://mega.co.nz/#!eps0AaBA!MiOJIq7MhW3jwwVeia4eSbdNvJ_AR0iUK7NWt65cpD0

So far, after a month, the C lens is performing well and is a good addition to the Mobius line, the video is sharp, their is no flare nor vignetting like on the B lens, the color accuracy is better than the A and night performance is great. I will do some more heat testing to see if there is any focus shift as well as some night videos using the different WDR settings to maximize low light performance. Here's the link to the camera
 
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I have both the A and C lenses and it's great to see a side by side comparison, so thanks for posting the vids. My C lens is in the front and the A lens is going in the rear, as soon as I figure out a mounting solution.

After reading some reports on here about the C lens suffering in high temps, it will be interesting to see how mine performs during the summer months. Although it doesn't get that hot in the UK, when the car is stood in direct sunlight it regularly reaches 40 C / 104 F inside the cabin, I think this is down to the sheer amount of glass in the X-Trail and the massive sunroof only adds to the heat build up.

Andy...
 
I noticed those, now I need to isolate the source to see if it's the lens or my windshield being dirty.
 
It looks like a reflection from the lens. The outermost cut edge of the lens becoming illuminated as it gets closer to the light source. I don't have the C lens but that is my thinking after watching the video.

Interesting that the other lights doesn't produce the perfect circle of light as you get close to it. I wonder if the effect can be reproduce by putting the camera in webcam mode and shine a flashlight at the lens from different angles?
 
I have been testing to see if the C lens' focus changes with the heat and I have seen no change in focus. A few days ago the weather was warm here and with my car in the sun all day, I decided to really test it. With the inside of the car very very warm, I turned the heat on high and set the defroster to blow hot air onto the Mobius. After about 10-15mins of driving, the car was uncomfortably hot and both the Mobius and the C lens were hot to the touch. Here's the results

Mobius C
https://mega.co.nz/#!GgURGKpB!D8CIy2yw5r9YPnU41EUoyGRM5sx1W-lrSqIgny5ak2A

Mobius A to compare
https://mega.co.nz/#!LtcFnSQZ!xWsWV2FSQ2GRI75BE2nDBurt6KtD5cxvsH89KO9dVOM

I am not seeing any focus change in my Mobius C after a month and a half of testing in different temperatures.
 
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Now that Spring has sprung, I got out to do some Mountain Biking and use the Mobius Action Cam as an actual Action Cam. Over all the Mobius did well on such a bumpy, root covered trail with a lot of drops, the video was nice and sharp. I think the C lens setting still needs some tweaks, the color is a bit off, the exposure is a bit bright and it could use some beeps to let you know whats happening when mounted on a helmet. I was comparing it to the Yi, and in a direct 1080/30 fps comparison, the Mobius was sharper. More on that in my Yi review.

The Vimeo video isn't as sharp as the raw video that I included below each clip. I included the unedited clips to show what directly comes from the camera.

https://mega.co.nz/#!u4VhlRrQ!oLIgKJiA2FnPWFw8oewpyUCu4ti1_HgOpUZt47VG8Cg

https://mega.co.nz/#!axdEVBjJ!pUZfzlbDr7XgTDA4Y7r9KnuRK6P1ZwLONLagjat_ouc

https://mega.co.nz/#!LgNkHCqJ!QQtmNKOnHOylYS5xRfJeSKpwv-EQemZctc6kyBzSn_k
 
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^ The motion on the videos almost made me vomit but I liked the trails so much that I pushed through. :p

I miss single track trails. They have banned bikes on those trails around here since "they are too dangerous". Ha Ha too dangerous for whom????? Thanks for the videos
 
That makes big brother sound like big mother.
 
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