One of my favorite lenses and maybe even the cheapest lens I own, is the Fujian 35mm F1.7 c-mount lens. A tiny lens, mostly used for CCTV cameras. These lenses can be bought in China for around 20 dollars, often including the adapter and shipping. I bought mine after seeing a raving review of Nate Burr (Blunty) on Youtube, a couple of years ago. Since then I have shot quite a lot of pictures with it, including some of my favorites, and I (still) like a lot. Hereunder you'll see some of these pictures, including 7 reasons why this is one of my favorite lenses.
Almost a year ago I bought the Cosmicar 75mm 1.4 TV lens. This lens is a manual focus c-mount lens, made out of solid metal and lots of glass. It's a relatively big and heavy lens. You can buy old (classic) versions of this lens and new versions of this lens (it's still being produced). This one is the old version. It was probably once used in the 70's or 80's on 16mm film cameras or on a television camera. The specs make it seem like a good alternative for the excellent Olympus 75mm 1.8 portret lens. It has the same focal length, a large(r) aperture, but it's more affordable. I bought mine for around a 100 euros, where the Olympus lens costs about 9 times as much. Let's take a look at this Cosmicar TV lens.