Does anyone else who uses one of these find the sensitivity of the aperture ring annoying ... you breathe on the damned thing and it moves! I find that when focusing with the full battery grip on the camera I keep rotating the aperture ring inadvertently and because the lens has no electronic connection with the camera (E-M5) you are unaware of the shift ... I often take several shots not realising this until I take the camera away from my eye. Interestingly my Nokton 35mm f1.2 RF lens is the same. Voigtlander really need to give the detent system in these lenses a little more bite IMO!