I had been concerned about the tendency of the VF-2 viewfinder, which has no locking mechanism, to come loose on my E P5, and especially on the E PL5. Solution: a $1.99 "cap-keeper" intended for lens caps. Note: in order to clear the pop-up flash on the E-P5, stick the cap-keeper either on the front of the VF-2 or on the shutter side. Loop the the elastic part either around the the strap or around the lens-mount (with a lens mounted of course). For best security, wrap the elastic part around the lens-mount, and shorten the on elastic part so that there is slight tension on the VF 2 itself from the elastic part.