The F-number on a lens is an indicator of its ability to gather light, with a low F-number being advantageous, hence their reputation and likely high price tag.
The low F-number and fascination among photographers has led one person to attempt making their own professional lens.
The process involves using old parts from lenses and a 3D printed enclosure to recreate a professional lens with a low F-number.
While the lens in question does work and has the desired ‘bokeh’ effect, it is not particularly sharp.
This experiment highlights the difficulties and expense in creating professional lenses, as well as showing how it can be done using older parts and 3D printing technology.
