PanoTools NG:
Re: Aiptek A-HD+ mini fisheye camera mod
panovrx 2009-Apr-13 01:20:45
Here is a little movie with the Aiptek/Sunex (of Jesus) that I converted from fisheye to equirectangular with PTAdjust (and cropped a little)
http://www.vimeo.com/4122209
.. the noise is from a fountain behind me
this is about 150 degrees fov I think
for comparison a regular panorama a little later (full screen)
http://www.mediavr.com/goodfriday09.htm
with 5D MkII, 10.5mm Nikkor, f3.5, 1000IS0, 9 shots motorized in 2.5 sec
The Aiptek has different video modes and here I used 720p, 60fps (but Vimeo converts everything to 25fps). 60fps recording (and playback at 60 fps) gives very smooth motion on action scenes and produces less rolling shutter distortion but the 1080p 30fps mode gives more detail.
Peter M
> Yes I set it too close -- with these mini fisheye lenses with fixed (maximum) apertures you need to focus carefully. The Aiptek camera has 4X digital zoom so that helps but it is hard to see the screen detail in bright light.
>
> Here is another still with it (5M default)
> http://www.mediavr.com/aiptek2.jpg
> with the Sunex DSL219A 1.8mm fisheye
> http://www.optics-online.com/OOL/DSL/DSL219.PDF
> ... and the coverage is about 185 by 140 I think ... like a shaved 10.5mm on full frame.
>
> There is no manual exposure with the Aiptek but the exposure compensation reveals more detail in bright and dark areas so the sensor has actually a quite wide dynamic range. So you could at a pinch shoot panoramas with it. Here is a video showing the low light response with this lens fitted (it has f2 aperture). This is 60fps 720p.
>http://www.mediavr.com/helimodel.mov (16M)
>
> There are quite a few shots of dismanted Aiptek A-HD+ cameras online but it is a bit harder to modify I think than the Logitech Notebook Pro webcam and Gopro Hero Wide which I have retrofitted fisheye lenses to too also. The main issue is the M12 lens mount of the Aiptek which is custom for this camera and is better replaced with a more conventional M12 mount. Which I did. I would rate the difficulty of fitting prime fisheyes to this 5 out of 10, compared with the GoPro 3 out of 10 and the webcam 2.
>
> Peter M
>
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