I have started the online course with the photography institute and i'm struggling with my first assignment. I'm a total novice so that's probably why !! i have to decide which lens to use between a 20mm, 28mm shift, 35mm 50mm 85mm 100mm macro. The first scenario is a food magazine wants a picture of onions and garlic in their natural state shot on a farm then some close ups followed by people's hands crushing and shopping. For the farm shot i already decided a wide angle lens to get a shot of the rows growing but i can't get my head around the the depth of field and the angle i would get. If i shoot with a 20mm the angle would be 84 degrees, would that gives me the whole field or cut in half ? i would be so grateful for help really feel like i'm drowning before i even started !!!