As the aperture number gets smaller (for example, from f/16 to f/11) the aperture opening gets larger and the image gets lighter. The reason you don't usually see this effect in your images is because when you or the camera change the aperture, the camera changes the shutter speed to keep the exposure constant.
Button Squash Cucurbita pepo Cucurbitaceae The fruit of the button squash is literally only 'button' if you pick the fruit when very young.There is a temptation to let them ripen but that would be a mistake as they will just continue to grow until you end up with pumpkins.utton Squash Cucurbita pepo Cucurbitaceae The fruit of the button squash is literally only 'button' if you pick the fruit when very young.
Once blossoms appear and pollination takes place, zucchini will grow quickly in the warm weather and may be ready to pick in as few as four days or up to a week. Harvest zucchini when it is about 2 inches in diameter and about 6 to 8 inches long. Don't allow the squash to get too big or overripe, or it will be tough and seedy. For more delicate texture, zucchini can be harvested when it is even smaller. The blossoms can also be used in gourmet dishes.