Tested with HD2000A + 49mm Step-Up

The processing, however, is mediocre:
The rubber diaphragm is attached to a plastic ring and sits quite loosely, like also comes down again - but can be easily re-attach ('m here to help out with any of a rubber-compatible adhesive).

For plastic ring:
The female threads engage not particularly good (not executed continuously, but as 2 segments with approximately 1.5 cm of free space between them) - the installation of step-up ring was a cramp, succeeded after several attempts but also (though not perfectly straight) ,
The male thread, however, is carried out continuously, reaches well into the socket on the camera.

For Use With Step-Up Ring (Original Sanyo 40.5 -> 49mm) is not much to say, all the positions of the rubber diaphragm can also be mounted with adapter to take full advantage! The aperture is long enough to side light to keep in the extended position by a most experienced mounted filters.

Conclusion: Pretty good, next time I will but pay attention to a better running adapter ring - possibly made of metal - and with continuous thread on both sides. Based on the processing rather than 3 4 stars.