Be aware that your camera likes sunlight reflected off of an 18% gray card for getting a proper meter reading. When shooting snow, if your picture looks grey, check your histogram and if it is dark, it’s because it is reading too much white reflection. The camera will think there’s too much light out there. To compensate, you will need to open up your lens about +1 stop manually or set your exposure compensation button to +1. Remember after you are done, to set the compensation back to 0. Be aware the camera does not default to 0 when you turn it off so make sure you don’t forget to set it back to 0.