The tail is black tipped. The white winter coat is the source of the common name ermine, which is a French word for white winter color. The ermine has a typical weasel shape; a very long body, short legs and a pointed face with an almost triangular head. Its tail is about 30 to 40% of its head and body length.
Before we go any further, you should first understand how DSLR cameras work. In very basic terms, ISO is the level of sensitivity of your camera to available light. The lower the ISO number, the less sensitive it is to the light, while a higher ISO number increases the sensitivity of your camera. The component within your camera that can change sensitivity is called âimage sensorâ or simply âsensorâ.
Film speed or digital camera sensor sensitivity is one of the things for which this organization has developed international standards. In order for a camera manufacture to rate camera settings with each ISO number, it must meet the respective ISO standards for signal to noise and brightness measurements. In theory, ISO 100 on one digital camera should be the same sensitivity as ISO 100 on any other digital camera.