Extended User Manual – Irix 15 mm f/2.4
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Your Irix lens can accept 95 mm screw-in filters via
the front threads. Due to the wide angle of view,
the use of “slim” filters is advisable to prevent
vignetting. Filters with a low profile of 5.3 mm or
less are recommended. Stacking multiple filters
may also cause vignetting.
Irix Edge filters are highly recommended, as they
are engineered to be fully compatible with the lens
design.
To attach a threaded filter, align the threads care
-
fully and rotate it clockwise while facing the front
of the lens. The filter should turn smoothly and
with very little effort. If it appears to be crooked or
binds, reverse the rotation to remove and realign
the filter.
Excess pressure or misaligned threads may permanently dama-
ge the lens and filter.
Before tightening the filter, ensure that it does not come into
contact with the front element of the lens Contact between the
surfaces may cause permanent damage to both.
FRONT FILTER THREAD
