Burning Wire Wool
For Christmas 2015 I was given a Photography Experience Day, which I finally got around to using in December 2016! The idea is simple. Stuff some wire wool in a metal balloon whisk.
photography
A collection of 2 posts
FoCal
FoCal is some potentially useful software which performs focus microadjustment for some Canon cameras, automatically. The obvious major flaw is that it's currently Windows only, but the developer has promised a Mac version