The document discusses various photography techniques and terms including shallow and deep depth of field, fast and slow shutter speeds, film grain, and digital noise. Shallow depth of field focuses on a subject while blurring the background, while deep depth of field keeps more of the scene in focus. Fast shutter speeds freeze motion but provide less detail, while slow shutter speeds can capture motion but with blur. Film grain and digital noise refer to the texture and speckles that can degrade image quality in film and digital photos respectively.