The wide-angle paradox
As we know, wide angle lenses show a larger field of view and therefore make things appear smaller and appear further away than they are. Which contradicts the concept of macro photography, where we want our subject to be projected onto the sensor at a magnification ratio of at least 1.0x. So how can we combine a wide angle perspective and macro macro-capabilities?
The concept of wide-angle macro photography is not exactly new and there are other photographers out there, who built their own super-wide macro lenses. There even are a couple lenses on the market that provide 1.0x at a15mm focal length, but I much rather an interesting DIY project than spending 500$ on a niche lens.