> - once you’ve taken your picture, you need to: 1) remove remaining silver halide that wasn’t exposed to light, 2) “fix” the remaining silver so it’s stable T

> - once you’ve taken your picture, you need to: 1) remove remaining silver halide that wasn’t exposed to light, 2) “fix” the remaining silver so it’s stable There's a developing stage before before your step 1). Developing causes areas of silver halide that were, in effect, only partly converted to silver (the so-called "latent image") to undergo full conversion. It's quite a complex process. https://en.wikipedia.org/wiki/Latent_image https://en.wikipedia.org/wiki/Latent_image