Simmod Lens has announced a magnetic, color-accurate IR Neutral Density (IRND) filter solution for ARRI Signature zooms and primes, as well as stills lenses converted using Simmod’s proprietary LPL mount conversion kit. Attaching magnetically to the rear of compatible lenses, the Simmod Lens Full Spectrum Essence IRND filters for LPL and Signature primes are available uncoated in ND 0.3, ND 0.6, ND 0.9, ND 1.2, and clear.
Full Spectrum Essence IRND filters use the latest filter technology to ensure minimal color shift and near-perfect skin tones. Scientifically measured, a high transmittance curve is achieved across the entire spectrum. Thus, the filters perfectly reduce light evenly across the entire spectrum while retaining the ultraviolet and infrared frequencies necessary for proper imaging. The result is colors that are as close to the original tones as possible, making them ideal for post-production.
The LPL Essence rear magnetic filter system was first introduced with the Simmod rear diffusion option. With the addition of the IRND option, photographers can now quickly and easily change ND and diffusion. Essence filters click into place with a reassuring sound and filter changes can be completed in seconds. They are also smaller and lighter than screw-in or matte box style filters. One small, single size filter fits multiple lenses, eliminating the need for heavy matte boxes, multiple step-down rings, and large, expensive filters for wide-angle lenses.
Essence Filter System
The Essence Filter System fits into the magnetic rear mount of ARRI Signature Series lenses and Simmod LPL converted still lenses. It consists of a magnetic pilot guide ring that screws into the rear of the Simmod LPL mount, and an Essence filter that fits into it. All Simmod LPL conversion kits come standard with a rear pilot (non-magnetic) guide ring that screws into the LPL mount (it guides the lens when it is attached to a camera body or adapter, and has a 55mm thread on the rear, allowing users to use most regular 55mm threaded filters for the rear filter if desired). To use the Simmod LPL Essence Rear Magnetic Filter, the original pilot guide must be removed and replaced with a new Essence Magnetic Pilot. Once screwed into the LPL mount, the magnetic filter can be quickly attached to the rear.
Each Essence filter is made from aircraft grade aluminum with knurled edges for an easy and secure grip. Each ring has a total of 12 magnets to prevent accidental removal. Every filter comes with its own protective case.
Magnetic rear lens filters have traditionally only been available for high-end cinema lenses and have been expensive, but the Essence filter system offers a cost-effective solution for users of vintage still lenses that use Simmod Lens’ LPL mount system.
Perfect Shimming
Adding glass filters or elements will slightly change the back focus of the lens, resulting in the infinity focus moving beyond the infinity mark on your lens. If the lens is adjusted correctly it will focus to infinity, but for precise distance marks, the operator will need to apply shims to the lens.
Once a lens set is properly shimmed for use with filters, there is no need to readjust when changing filters or focal lengths. If the user does not need ND, simply attach a magnetic clear filter to maintain the correct flange distance. The Simmod Essence system ensures that any focal length can be used without affecting focusing. Shims are included as standard with each Simmod LPL conversion kit, and more can be purchased from the Simmod website if needed. Shims are available for Leica R, Nikon F, Olympus OM, Contax Zeiss, Canon FD, and Mamiya 645 mounts.
Why Simmod LPL?
The physical design of the LPL mount makes the Essence magnetic filter system possible: by designing a modern mount with a shorter flange distance and a wider opening, ARRI engineers were able to provide the space needed for the rear filter system.
The Simmod lens mount makes it easy to adapt vintage still lenses to the LPL, so it’s clear that the LPL mount is much more flexible than the older PL or EF mount systems.
