The Flip UltraHD by Pure Digital (recently acquired by Cisco Systems) is really an innovation. With its palm-size physical dimensions (4.25″ x 2.19″ x 1.17″ (H x W x D), 1280 x 720 resolution, 16:9 HD aspect ratio, 8gb memory / 2 hours recording time, dead-simple file management / video editing software included in the camera and price tag under $200 US, one can hardly go wrong for creating personal videos or video location scouting. (1280 x 720 x 72dpi jpg still images of passable quality for most location scouting needs can be saved from video as well.)
There are, however, a few features that seem lacking in the UltraHD out-of-the-box, foremost for me as follows:
One well-documented method of improving results due to the first problem is to superglue on an adaptor ring and buy whatever adapter lenses you want. I went with a 32.5mm – 37mm step-up ring, (1) Kenko .43x Fisheye Lens and (1) Kenko .5x Wide Angle lens
, all purchased very reasonably from B&H Photo in New York City.
WARNINGS / CAVEATS:

My hacked Flip UltraHD: glued on 32.5mm – 37mm step-up ring with a Kenko .43x Fisheye Adapter Lens attached
Hey, Flip Video! Give us some THREADS on that lens!
The other problem with the Flip UltraHD, as mentioned at the beginning of this post, is image stability. An emphatically requested feature addition for future Flips for me would be for image stabilization!
Altho the inherent motion-reducing properties of the wide angle and fisheye lenses help, it’s *real tough* to generate a steady video stream using the UltraHD without putting it on a tripod and especially if you are moving / panning at all. An expensive professional electronic photo / video gyro stabilizer solution is hardly that in this case, considering the expense and additional hardware required. The very essence of the Flip is it’s diminutive footprint and low cost.
The solution I am currently trying is using the Manfrotto 585 ModoSteady 3-in-1 Camera/Camcorder Stabilizer and Support System, but at the same time, I have succeeded in undermining the beauty of the UltraHD by adding all this hardware.


I am currently researching a DIY gyro solution; some others with the same idea have discussed solutions using everything from spinning bicycle tires to old hard drives to toy gyros. The jury is still out on this one!
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Hello! Very nice hack tutorial. My son got the Flip Ultra HD for Christmas. We immediately knew he was going to need a wider lense, maybe even the fisheye to capture his juggling. We searched google for flip fisheye and we cam across this. We might be trying this hack.
I have a question…would a 30 to 37mm adapter ring do this just as well? They seem to be a little more available.
Thank you again for the detailed tutorial, going to become a fan now.