To shoot the canon nb-4l battery blue sky, a prerequisite for some blue sky, and if the sky is completely gray, you can not help shooting techniques to achieve. To take out the blue sky, there are two ways: First, using polarized light microscopy, and second, the blue sky, looking for a point.

As for how to find this point of view, the method by V sign. The right hand or left hand thumb and index finger to open into a 90 °, the index finger pointing to the canon nb-5l battery sun, the direction of the thumb is the most blue sky in the direction, as long as the shooting in this direction, can be compared to the blue sky.

Will use the polarizer film scenery more blue sky, white clouds and more prominent.canon nb-6l battery