On fair days the world is illuminated by a combination of sunlight and skylight. On overcast days, the world is illuminated by skylight only. Now skylight is very blue thus images reproduce with a blueish tint. If you were using color slide film, the remedy is to mount a warming filter. The most popular is the Wratten 1A (Kodak trade name) commonly called a “Skylight”. We mount such a filter to warm our images. The 1A is pale pink and absorbs ultraviolet as it reduces excess bluishness. This filter is effective when the principle subject is in “open shade” under a clear blue sky.

In digital photography we can mount warming filters however, your camera features “white balance”. This is a camera setting designed to neutralize a color cast induced by the ambient light source color. Additionally clever use of “white balance” can be used to intentionally alter the color balance of an image.

To mediate the bluish cast of your images make sure “white balance” is turned on. If you review your camera manual’s “white balance” instructions, you will discover that you can use a white placard as a target. This method of use causes the camera’s logic to preview the color of the ambient light and subsequently apply a correction. You can use this method to effectively neutralize an off-color cast. Additionally, most image editing software allows post camera exposure corrections to the color balance of images. Peruse the instruction manual that covers the imaging software you are using. Take the tutorial, you can do this!