The Grad kit 1 contains 3 of the most popular grads used to enhance your landscape images- a Sunset 2, Blue 2 and Twilight 2 all in soft edge. Combine this with a reverse grad ND kit to give you the ultimate in sunrise and sunset effects. Save over 25% compared with purchasing the filters separately. The Sunset soft edge colour graduated filter is graduated red, orange and yellow to give a dramatic sunset effect. The Twilight soft edge colour graduated filter is graduated from darkish blue at the top to a pink horizon. The Blue soft edge colour graduated effects filter creates a realistic cooling blue effect. All 3 filters are available in 3 densities (1,2, and 3) but for the kit we have chosen the most used density of 2. Soft edge grads have a smooth transition from clear to ND. Hard edge grads have a more defined hard lined transition and are usually used for longer focal lengths. Different graduated colour filters can be used in combination together or with solid colour or neutral density filters to give interesting bespoke effects. This 67mm filter kit is usable with Hitech 67mm holder systems or any 67mm (2.67″) holder. The kit is also available in 85mm, 100mm, 150mm and 165mm sizes. Hitech filters are made from the highest quality 1.5mm optical resin.