Put a Helios 44-2 on a Fuji body and it stops being a 58mm lens, at least as far as framing goes. It frames like an 87mm. On an Olympus Micro Four Thirds body it frames like a 116mm. Same glass, same aperture ring, very different lens in practice. Most of the confusion around adapted glass comes from mixing up three separate things: what the sensor crops, what the adapter has to do mechanically, and what a focal reducer changes.

Twelve dealers took over the eighth floor of Matsuya Ginza on September 4, and they clear out on September 9 at five in the afternoon. The I.C.S. Imported Camera Society has been running this fair twice a year, once in winter and once in autumn, and this is the 55th edition. The February one closed on March 2. If you happen to be in Tokyo this week, the eighth floor is open from 11:00 to 20:00, until 19:30 on the Sunday, and only until 17:00 on the final day.

The 135mm prime is the cheapest good lens in the used market and has been for thirty years. Every SLR system made one, most made several, they were sold in enormous numbers as portrait lenses, and then autofocus arrived and the entire installed base became unwanted. A clean M42 Takumar 135 or a Canon FD 135 costs less than a decent filter. On a crop body it becomes roughly a 200mm equivalent, and that is the focal length where industrial subjects start behaving properly.