Bill-in-KY
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Old RR tunnel No9, north end, south of Somerset, KY
This is at the south end of Pulaski County or the north end of McCreary County. I'm not sure. This post is to go along with a previous post today, in which I mentioned that the Kodak z7590 has a socket to plug in an external flash, with a PC cord. This photo was made with that camera and a Vivitar 283 flash. I made a better photo just inside. The tiny on-camera flash isn't near enough to use for this, so I used a good size external flash. That capability is one big reason I bought that camera, and the Minolta A1. Here is another one made with that Kodak.
Old RR tunnel No4, near north end, Pulaski County, KY, between Somerset and Burnside.
This photo is facing south, in tunnel No. 4, near the north end. Tunnels 3 and 4 are close together. In Dec. 2018, a friend and I walked through both. We went to several old tunnels. I made a book about them. I used the Vivitar 283 flash that day too, with the Kodak z7590. I'm not sure what the "trigger voltage" of that flash is. It is a lot more than 6v. Some of those flashes were made in Japan, and some in Korea. I had one of each. I'm not sure which I used there. I think the one made in Japan has a higher voltage. I gave one to my hiking friend, and kept the other. I had used both in caves, with a film camera. I found a 3rd one at a thrift store and bought it. Looked new, but had dead, corroded batteries inside. The door was stuck, and the batteries too. Couldn't look inside until after I bought it. Got them out, which was not a quick extraction, cleaned it up, and then the flash worked fine. The 283 is a good flash, but not for modern digital cameras unless they are protected for a chunk of voltage. Voltages of various flashes can be found here: https://www.botzilla.com/page/strobeVolts.html
So, the Kodak z7590 was appealing to me when I bought it in 2012 because of its external flash capability, even old ones for film cameras. One big reason I wanted the Minolta A1 later on was for the same capability, besides other attributes. A DSLR was not an option back then. I used the small cameras. I don't know if any Kodaks after the z7590 were made with a socket for an external flash, and had good voltage protection for using older flashes. Konica-Minolta dropped that with the A200, which I thought of as a mistake. A person might have one or more good older flashes, and not want to spend a chunk on a modern, low voltage flash for digital cameras. If he has a P&S with old flash capability, he can use them. By the way, there is an old Canon flash with low voltage, only 6v. It is the 199A. I bought one about a year ago. Somehow I found out about that and I was surprised that an old flash for film cameras had low voltage. I have used it on my Canon DSLRs. It might not be near new enough for some people, but I like it.