Olympus Zuiko 200mm f/4 Manual Focus Lens for OM-Mount Camera Straps Update of FE which added:

Update of FE which added: TTL OTF flash AE

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The later model 40A lens discarded this model's CF macro ability and instead uses a macro button and macro helicoid

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Olympus Zuiko 200mm f/4 Manual Focus Lens for OM-Mount Camera Straps Update of FE which added:The Zuiko 200mm f 4 is a fixed telephoto lens built on the Olympus OM mount, a system that earned a lasting reputation for optical quality in a compact mechanical package. At 200mm and f 4, this is a lens sized for handheld use in decent light, long enough to isolate subjects at distance, fast enough to give you workable shutter speeds without a tripod in most daylight conditions. The 55mm filter thread keeps accessory costs reasonable. Manual focus