There are two types of photoreceptors, the cones and the rods. The cones function in bright light and there are three types that are maximally sensitive to different colours, which allows the ratio of their responses to code colour.
Medioimages/Photodisc/Photodisc/Getty Images. Most PGA Tour caddies make a salary of between $1,000 and $1,500 a week, plus a percentage of the playerâs winnings each week. A common rate is 5 percent for finishes outside the top 10, 7 percent for non-winning top-10 finishes and 10 percent if the golfer wins.
It is common for experienced caddies to carry two bags at a time. It is considered acceptable to ask a professional at the course what the average pay for a caddie is, as courses differ. In a professional golf tour setting, a player often pays their caddy a percentage of their winnings, which can be as high as 10%. A common pay scale is 5% for making the cut, 7% for a top 10, and 10% for a win. The caddy also usually receives a salary, as the player is not guaranteed to win money at every tournament.