The optional short port M67 for Isotta housing Canon PowerShot G15/G16/G7X Mark III, Panasonic Lumix DMC-LX10/LX15 can be
used in place of the housing's standard port for use of 67mm threaded
external wide angle lenses. This port is as close to the camera's lens
as possible for the best image quality and very little vignetting (dark
shadows in the corners of the image) with external wet lenses.
The standard lens port is removed and the short Port M67 simply
threads into the front of the housing for quick and easy installation.
The camera's focal length must be pre-set to 25mm whenever this port is
attached and cannot be zoomed underwater behind this port.
