I have just bought a Schneider 360mm/6,8 with Prontor shutter. My question is that on my lens there are no marks between the aperture in the scale. Of course there are marks for 8-11-16 but no small marks in between. I searched the net and found a photo of 360mm/6,8 with small marks for the aperture scale, since the lens was made before my mine I thought this was a little bit strange so I sent a mail to Schneider and got this explanation. "Only the shutter iris scale starting with f-stop 6,8 and no marks between the full f-stops was made by our company. The other scale must be made by Prontor or a dealer did exchange the scales for himself, anyway they are wrong." Does your Schneider 360mm lenses have aperture marks in between?