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Hi - thanks for the reply. The camera in question is an RTS II. The TTL flash system in the RTS II brochure (circa 1985) consists of TLA-20, TLA-30 and RTF 540. I had a TLA-30 I was looking to replace but I see the TLA-30 and the 360 are around the same price on ebay, and the 360 looks like a better unit.