2021/01/23: I spent a couple of hours walking around Oregon City with two Olympus Pens. A 1960 all manual Pen S loaded with Kodak Tri X 400. The other was a 1966 all auto Pen EES-EL loaded with 2008 Fujicolor Superia 200.

The EES is controlled by a selenium powered light meter. If the meter doesn't register enough light you cant take the photo. While many of these meters are still working perfectly after 60 years many more are not! It turned out the meter on my EES would only work in bright full sun. The workaround is to shoot in flash mode where you have the choice of picking the aperture but the shutter speed is then locked at 1/40th. Not ideal but it is a workaround. Here is a link to the Pen S photos.