Upgraded from your mirrorless camera to a RED Raven, but still frustrated with up front ND filtration? KipperTie may have the answer with their 6 piece drop in rear ND filters. KipperTie first entered the filtration scene with their Infrared and Soft Diffusion OPLFs (optical low pass filter) for the RED Epic. They’ve continued their venture into ND filtration, this time specifically for the RED Raven. Unlike conventional Neutral Density filtration, the KipperTie Raven Internal NDs are drop in filters that sit between the cameras sensor and back of the lens. A simple grip tool is supplied that holds the filter tight until you release upon insertion of the camera. A neoprene edge ensures a snug fit around the sensor housing without damaging any part of the camera. Of course, adding any amount of glass between the sensor and lens is going to affect your focal distance. KipperTie therefore supply a set of self adhesive shims that sit around the contact point of the lens to ensure focus markings remain accurate. Rear filtration can be great for alleviating the need to add ND on the front by means of a mattebox or screw on filter. This is great if you are running about and changing lenses often, or need to save weight and could do without a cumbersome mattebox, making it perfect for drone use. If you do want to change the amount of ND, this kit comes in a set of 6: ND 0.6, 0.9, 1.2, 1.5, 1.8 2.1 are all included, meaning you have a range of 2 to 7 stops neutral density. I can see this workflow working well in addition to up front filtration. Proper filters are expensive: a set of 5.65″ Firecrest 1-3 stop filters are over $1200 for example. On a bright sunny day, you’d need a 4-6 stop kit too, therefore doubling your investment. Throw a KipperTie drop filter in the back instead, and you’ll be able to moderate fine exposure with your 1-3 stop front filters once again. The 6 set of KipperTie drop in ND filters comes with 6 shims, insertion tool and custom foam hard case, retailing for £460+VAT.Read more
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