Low profile Macro port for use with Canon 60mm EF-S and Tokina 35mm AT-X M35 PRO DX macro lenses. For all bayonet housings.

A low profile flat port, this version of our modular flat port system has a shorter, much smaller length than the other flat ports and was designed to take full advantage of the much more compact macro lenses available from some manufacturers. The port can also be combined with a variety of extension rings to accommodate longer lenses, including lenses with close up lenses, teleconverters or extension tubes.

The flat lens is made of BK-7 material, finely polished and coated with a superior Silicon Oxide coating (SiO2) on the external surface. This coating is not only a more resistant type of coating but has a 0.01% reflective index, improving light transmission.  Additionally this SiO2 coating is a perfect match to the index of water, which naturally reduces reflections.

The main difference of this port from the AF/MF port, aside from being lighter and narrower, is that it doesn’t have the side mounted knob that can be connected to a focus gear. Since it is dedicated to compact macro lenses, in most the manual focusing can be accessed via a gear connected to the left hand focus/zoom control knob of the housing, like its bigger sibling the 18428, this low profile flat port is designed for general purpose macro work, and it should fulfill all the needs of the dedicated photographer.

For a list of the available extension and their dimension please visit the extensions rings section. A lens chart associated with your camera housing will inform you of the most current popular combination.