Extended User Manual – Irix 15 mm f/2.4
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Your Irix lens is equipped with a 30 mm x 30 mm
slot behind the rear element to accommodate ge-
latin filters. A template for pre-cutting filters is inc
-
luded on the last page of this document.
Using gelatin filters allows you to add rear filters in
conjunction with front-mounted threaded filters,
while avoiding the vignetting that can be cause by
stacking multiple front filters. For instance, a color
correction filter can be added while using a circular
polarizing filter or ND filter.
Exercise caution when inserting filters to avoid touching the
rear lens element and electrical contacts on the mount.
Filter dimensions that do not match the template in this manual
should not be used.
REAR GELATIN FILTER SLOT
