You may think automatic white balance is good enough. But if you’ve ever had to fix dozens (or even 100s) of photos with just slightly different colors, one-by-one, you know the true meaning of pain. The White Balance Lens Cap leaves you no excuse for not properly white-balancing every situation you encounter. Simply flip your camera into custom White Balance mode, snap a photo with your White Balance Lens Cap on, and your camera creates a perfect profile of the actual lighting in front of you. Best of all, unlike a gray card, the White Balance Cap takes no extra room in your gear bag. Just replace your existing lens cap with this one and you’ll always be able to white balance with no additional equipment.