When we talk about film speed, we're referring to the measure of a film's sensitivity to light.

Each film speed is best suited for a different type of photography.

For every situation, then, there is an optimum balance between image quality and film speed.

However it was very bright on the water and perhaps the film speed was too high.

No matter what your film speed, you can't have both at the same time.

The film speed is a measure of the film's sensitivity to light.

So film speed is a uniform, consistent measure of a film's sensitivity to light.

The film speed also play a factor in image quality.

But what is film speed and why does it matter?

The film speed - how quickly the film records the picture.