Some new photography products seem so obvious upon launch that you wonder why they haven’t been invented before. Kase’s Wolverine Double Grad filters fit that bill. The 150x100mm rectangular filters, which have been designed for use in standard 100mm holders, feature two gradations on either end of the glass. There are currently two variations available: a 3-stop soft with 3-stop hard grad and a 3-stop reverse with a 3-stop medium. We had an early demo version of the former, but Kase says that more variations will be forthcoming.