BaLens 77mm Snap Cap White Balance & Exposure System with Interchangeable Neutral & Warm Domes

This piece of plastic alone has greatly improved my photos and lessened my time spent editing them on my computer. I will never use auto-white balance again. In fact, I got another one of these for my other lens. It is so convenient and certainly worth...

Inside the lens cap on the interior side, is a mounting ring and a tabbed thread that holds the dome in place. The design of the lens caps is such that the dome can be swapped. So, here is where the design flaw lies. The dome mount inside the lens...

I purchased this for my Canon 5D and even at the price its one of my better purchases. I just snap a picture with the cap on then use that as a ref photo for my custom white balance adjustment. Fast and easy. As a side benifit its a better lens cap...