Back in the film days I never really thought about flash units since I rarely used them. When i decided that I needed a flash unit mostly for event or wedding photography, I stuck with dedicated flash units made by the manufacturer(Canon/Nikon) or I went with a Metz . However, I did hear about 3d party flash manufacturers such as Sunpak that had a huge loyal following. I wondered why, but never bothered to follow up on my curiosity. A few days ago I decided that i needed a small manual flash for my Pentax Spotmatic F (circa 1960's) since i decided to get back into film. I didn't really need anything fancy just a flash unit that would flash a burst of light in dim lighting situations. OK since Thyristor technology was the rage before TTL, iTTl eTTL etc I figured you might as well throw that in . I didn't want to get stuck trying to read those complicated charts on the back of the flash unit in dim lighting with my old eyes. Anyway my curiosity for Sunpak flash units finally kicked in, so I went on eBay to see what they had available. Sunpak made a series of Thyristor units which were numbered 211, 322, 411, 555, 611, I think the later 2 were hammer-heads and were hugely popular. These flash units are currently selling for peanuts on eBay, so If they came DOA or had other issues, it would not be a big deal. First I purchased the 411 (because it looked nice in the picture) for $20. Unfortunately, it was way to big and not pocketable like I wanted. It might work on my Mamiya medium format though ? The thing I noticed about this Sunpak is that it was really well made, not cheap plastic. It came with a well written (English only) manual with large lettering so you don't need the magnifying-glass down while reading it. The flash came in almost mint like condition, but I have yet to test how accurate it is. It allows for bouncing off the ceiling, or wall. Comes with an illuminated control panel in the back, plus it allows a power pack. Anyway, since this flash was too big, I went back on eBay and got the 211($14.99) which is the smallest unit in the series. While I was at it I also got the 322 since it was selling for $17.95(free shipping). The Auto322s arrived first. It still is a little bit to big for my pockets, but what a wonderful little flash ! It reminds me of my Nikon SB-15. This flash can tilt and bounce anyway you want it to. But the best thing about the Auto322s, is how easy it is to read the control panel in the back. In manual mode there are 4 slide controls(Power, Feet, Fstop, ASA). You just move these slides up and down until you get the right combination since they are all linked together. There is no guessing, squinting or complicated color codes. The 211 has not arrived yet. I'm guessing its the simpler of the two, but size is my main priority so no big deal. Does anybody know how much these units actually cost, back in day ?