Excerpt: I purchased the lovely Vello metal hood for the Olympus m4/3 75mm f1.8 lens. The original Oly cap is not pinch-style and isn't easy to attach/remove when the hood is in place. I believe that the expensive optional OEM hood may include a pinch-style replacement cap for use with the hood.
Excerpt: Yes, it's got the classic "replacement cap" look, but just TRY using the original lens cap on the M.Zuiko 75-300mm II with the lens hood deployed. Ain't happenin'. The center-pinch is a MUST, and this holds onto the filter threads well enough not to worry, so ... there ya go. It officially "works."
Excerpt: I got this lens cap to replace the one that came with the Olympus m4/3 75 mm f/1.8 lens because it uses center squeeze locks rather than edge squeeze. It works just fine with the lens hood I put on my lens while the original didn't work with the hood at all.