(faster shutter speed / less light). Aperture (or f-stop) refers to the size of the opening in the lens of the camera when a picture is taken. As you are focusing the camera, the lens is wide open with the largest aperture supported by your lens.
The harvest season typically falls between August & October in the Northern Hemisphere and February & April in the Southern Hemisphere. With various climate conditions, grape varieties, and wine styles the harvesting of grapes could happen in every month of the calendar year somewhere in the world. In the New World it is often referred to as the crush.
Napa and Sonoma Grape Crush. The year round process of growing grapes to make wine culminates in the crush. Anytime from late August to October the grape sugar level, or brix, reaches the perfect stage. This is different for each grape varietal. Champagne requires the lowest sugar level at 17; therefore, it is the first grape to be picked.