u/AlanTochterman

Good Afternoon

I am not normally part of this group so please consider me an outsider with a simple question. I have a very nice 500 c/m since the late 1970s. It is one of the few models that had a female pc socket on the side and another type of socket, two in total. Very little documentation appears on the internet about it.

Up until recently I have been synchronizing my back with my lens, using the "X" sync. Recently I tried it with the sync on the body and for logistical reasons prefer to use it. Shorter cable, and it doesn't get in the way when I focus.

Not all bodies seem to have this connector. I am assuming that it is "X" also, but not sure.

Now here is my question:

The "X" setting fires the flash at the zenith of the shutter's opening. The sync for flash bulbs syncs prior to the shutter's opening. In my mind, the "X" sync may only provide 1/2 the necessary exposure time as the trip is not until mid-point.

Nothing in the Phase One documentation indicates which synchronization to use and I seem to obtain more consistent results when I am hooked up to the camera body.

Can anyone out there tell me a little more about these two sockets on the side of my camera and how my P25+ functions? And should I be using the setting for a flash bulb and not a strobe?

Thank you in advance.

Good Morning to anyone who is out there.

I have been following all the commentary on OCLP and the changes within the group and the difficulties in getting support for OS Tahoe because of the issues with the T2 security chip.

I was wondering if a computer were old enough to not have the security chip, why being able to create an upgrade, even for only some units, would be so difficult?

I upgraded from OS Sequoia to Tahoe on my 2019 MacBook Pro. Although I don't care about the liquid display, my computer seemed to run faster and more smoothly on Tahoe than it did on Sequoia.

That is why I was hoping to get one last hurrah out of my Mac Pro tower.

I read about a group of folks working from Asia that seem to have a version 3.20 but I don't think that they are part of the original group, so I don't want to create any problems with my computer.

Alternately, because my "box" has 4 bays, I could just put in a blank drive and take out my current one for safety, and try my luck.

Does anyone out there have any thoughts on the subject ?