(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.
After all, better grapes mean better wine. The most important day of the year is the day you pick. It sets in motion the annual harvest and it also determines the kind of wine you'll make. As a grape grower and a wine maker you should keep a notebook. You'll be glad to have records in the months and years to come. Let's start with sight, touch, smell, and taste. You want your grapes to be rich in color, not green.