Lee Filters

Upgrade Kit

The LEE Upgrade Kit features a 100mm System holder and a Tandem Adaptor and converts a single Foundation Holder into a Professional Kit.

This upgrade enables two ND Graduated filters to be used at once, with each independently rotated to a different angle - a useful capability for controlling exposure across the scene. It also allows the use of more than four filters for unlimited creative possibilities.

LEE 100mm System Logo

LEE Upgrade Kit with Joe Cornish

Avoiding Vignetting

Filter Slots Minimum Focal Length
One 16mm
Two 17mm
Three 21-24mm
Two Holders 28-35mm

The 100mm Holder allows you to easily adjust the number of filter slots available. However, the more filters you use the narrower the angle of view without vignetting. The table shows safe minimum focal lengths (full frame) for different numbers of filters or if using the Upgrade Kit with both filter holders.