An approximate lens formula: i/f = o/d
Use this formula to get an idea of what lenses will work in what space, what area of subject a lens will cover at closest focusing distance.… Read More An approximate lens formula: i/f = o/d
Category: Theory
Light and the Inverse Square Law
At some point in your photographic life you will inevitably come across something called the Inverse Square Law (ISL), which relates to light fall off with distance and how that affects exposure. A lot of photographers are put off by this mathematical construct, and while the physics behind it is relatively complex, its quite easy to understand and apply.… Read More Light and the Inverse Square Law
Balancing Flash with Ambient
When using flash, shutter speed does not affect the subject’s flash illumination. Shutter speed affects the ambient light. Aperture affects the flash illumination (along with ISO, distance and power setting). Balance ambient to flash with aperture
Rob Sheppard 