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.
Get to Know Your Camera: What is ISO? How a camera performs as you increase its sensitivity to light can have more of an effect on image quality than its megapixel rating. It used to be that you had to change your film roll to adjust your camera's sensitivity to light. Now it's just a setting that you can adjust from the menu called ISO. It's a numeric scale, so if you set your camera to ISO 400 it is twice as sensitive to light as when it's set to 200. Depending on the type of photograph you're trying to take, the ISO you'll want to use can vary greatly.