Is it possible for a hobbyist to create/mold/grind/polish a lens element? There seems to be lots of astronomy hobbyists polishing mirrors and occasionally a large lens element. Is there an equivalent ...
I found a DIY TLR camera kit that lets you build the camera from parts, then use it to take photos. What I don't understand, is that the specs list: 1/150s shutter speed; f/11 aperture From that ...
A couple of months ago I was playing with my camera and a magnifying glass and I noticed that this glass produced a very soft chromatic aberration. Here's an example: (Here is the full size, 18mp ...