Learning path
Guides
Everything from "what is infrared?" to channel-swapping false color, in order. Work through it top to bottom, or filter to what you need.
Basics
Infrared, ultraviolet, and full spectrum: the basics
A plain-language intro to where infrared and ultraviolet sit on the light spectrum, how they differ, and what full spectrum means.
Ultraviolet photography
The two kinds of UV photography (reflected UV and UV-induced fluorescence), what glows, the hidden patterns bees see, and the safety rules.
Filters
Infrared filter types: pass and cut
Longpass, shortpass, bandpass, the hot mirror, and full-spectrum clear glass. What each filter type passes, what it blocks, and where IR filters fit.
Filters beyond infrared
ND and IRND, polarizers, diffusion, and split diopters, plus how filters stack. What each one does and how it behaves once infrared is involved.
Gear
Camera conversions: IR and full-spectrum
What a conversion changes, IR vs full-spectrum, the process, focusing and calibration, cost, risks, and the main companies that convert cameras.
Full spectrum with filters: one body, every look
How a full-spectrum camera plus a small filter kit covers infrared, normal color, and even ultraviolet, and how that compares to a dedicated IR conversion.