Comparáid idir grianghrafadóireacht analógach agus dhigiteach, trí scrúdú a dhéanamh ar thaifeach, raon dinimiciúil, agus dath, cuirtear béim ar uileláithreacht fhisic an tsolais agus ceimic. Comparing analog and digital photography, by examining resolution, dynamic range, and colour underscores the omnipresence of the physics of light and chemistry in everyday technologies.