2. MANUAL EXPOSURE and JOURNALISM

1. Understanding the EXPOSURE TRIANGLE:  Shutter Speed, Aperture & ISO...set your depth of field and motion focus, then adjust the ISO to maintain your desired results.

2. Setup for Manual Exposure: now we are ready to take charge of the exposure quality of our images


3. METERING with a REFLECTIVE METER READING (
in camera meter)

4. METERING with an INCIDENT LIGHT METER (off camera meter) Often used for fill light of strobes, hot lights or  speed lights.

METERING SNOWThe-Grand-Canyon-by-Matthew-Saville

http://www.slrlounge.com/four-tips-on-how-to-properly-meter-exposure-in-snow/

winter-photography-tips-04
http://www.diyphotography.net/15-beginner-tips-winter-and-snow-photography/