That is yet another absurdity about these CM33 guys. For a pancake lens, is it really necessary to put those toy filters inside the lens? Is the diameter that big they can't do with those one million and one filters on the market already? In the old days we use to stack two cheap filters together, fill it with sparkles, bokeh cutouts, grass, and even flowers to make some creative lomo effects for cheap without any complex engineering solution. This CM33 highlight some of the issues with kickstarter projects - Full of dreams and fantasies, believing that money will come easy... There is a reason why those suit-wearing, bean-counting venture capitalists exist and do well. They might now know much about photography but they know money. they vet each investment seriously. Can the CM33 guys convince those venture capitalists to put up $600,000 for a company that sells only ONE product? I don't know. But for a $800 manual lens? They are looking at some serious competition from Voigtlander. They have about 50 days left, which means they need to find at least 20 donors a day. and you know what? Even if the funding target is reached, you gotta wait till November of 2016 for delivery. I am a big fan for Mr. Miyazaki's work (http://camerapedia.wikia.com/wiki/MS_Optical_R%26D), and have had the honor of owning two of his handcrafted Leica-mount lens. He sells his wonderfully crafted lens about $600 a piece. Each with great optics and workmanship. Really, If I have $800, 900 to spend, CM33 would be quite low on my shopping list.