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I would love to see a Youtube upload to better judge the quality, Instagram on a phone is too small and you can´t really make it fullscreen on a computer.
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any ideas what setup was used for this?
Looks like a cheap hd camcorder with some kind of fisheye (maybe something raynox?). It doesn't look like a opteka or its clones. You just need to add enough spacers to get a lot of vignetting.
Not directly related to this video but I had that question a few weeks ago. If you add more spacers between the camera lens and the fisheye wouldn't the clip look less sharp?
I have a cheap camcorder with a cheap fisheye and a macro lens. It is camera, spacer, spacer, macro lens, spacer and fisheye. That combination brought the sharpest quality videos so far.
Although there is no vignette, this video looks similar to the clips I film with my camcorder.
To get a focused image while using a fisheye, the camcorder has to be able to focus quite close, in other words, it has to have a small minimum focus distance. Some camcorders that have quite long minimum focus distance can't be used with fisheyes unless you use a lot of spacers or you use some short of macro filter.
In this regard, adding more spacers can't affect sharpness. Keep in mind that adding spacers makes the fisheye circle smaller in the image frame so it occupies less pixels -> less resolution.
From an optics perspective, and I am no expert on the matter, maybe there are camera/fisheye combos that work best for a specific distance between the camera and the fisheye. I am under the impression that spacing the lens can't affect the sharpness negatively. You still have the problem that the smaller the fisheye circle in the frame is, the less resolution you are getting.
What setup are you using? Its strange that you have to use that many spacers and still get no vignetting.