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K-1 with Sunpak 555
My K-1 with grip and favourite flash unit. The 555 (also sold as the G4500DX) is a bit more powerful and featured than the contemporary Pentax AF400T, and better looking I think. It has seven Manual and seven Auto power levels, plus film era TTL.
The camera connection is via the [now rare] coiled Sunpak multi-pin cable and a Pentax-dedicated module in the hotshoe. This gives film-era dedication, not P-TTL of course, but a few things like a flash ready indication in the K-1's viewfinder. The effect of various combinations of camera/555 modes are complex but I generally use the camera in Manual or "X" for flash.
This outfit is very heavy! I don't usually have the grip on with the flash.