I routinely shade my lens from the sun with my hat. Fancy guys use compendium shades, which provide shade on all four sides, instead of just on the sun side. Under what conditions would the shade work better? All I can imagine is when there is more than one source of cast light, like the sun and also an obviously bright reflection off glass or water. Any other situations? Explain to me why such a shade isn't overkill. Then I'll add it to my shopping list... ;-)

CXC