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« on: October 11, 2017, 11:33:13 AM »
If you want the clearest image possible you need as much light as possible, it doesn't matter if you have a $10k cinema lens or a $10 eBay special, more light = high image quality.
With that out of the way I would recommend using 35mm, manual focus, manual aperture, SLR lenses (60s/70s) for a couple of reasons. They are fairly reasonably priced, you can get lenses as cheap as $20. Also there are way more choices in the 35mm Nikon/Cannon/Yashica/Konika/etc. range than you will ever find in native C mount. That will give you a huge selection in focal length and aperture (and bigger aperture gives you more light). Finally you will also get a better image in general out of a 35mm lens on a c-mount camera because you are only using the center of the lens, where it is sharpest and has the least aberrations.
The one big drawback is the crop factor, the Chronos sensor is 2/3" which is 3.9x smaller than 35mm film. So a lens that would give a wide field of view on a 35mm camera will be very zoomed in on the Chronos. If you have the space it is easy enough to just step back a little (or a whole lot) to get your subject in frame.