Yes, thank you, that is correct, nonetheless, what I said still works, just reverse my instructions, where I said "default" insert (+/-) etc.
The concept is that like in the old days with manual cameras we selected the shutter speed for the prevailing conditions and varied exposure with the lens ring for f stop. The shutter speed on a Nikon/Canon slr was on a dial up top and not so easy to manipulate while shooting, sorta like pushing buttons with the S90 and OEM housing. But, the aperture/f stop ring was on the lens and it was easy to dial it while we focused (Manual focus also , lol) so the concept is the same here. Set in a reasonable shutter speed, bright conditions maybe 1/250, dark, dim, cloudy then maybe 1/60 and for everything else, 1/125 @ISO 100. Adjust exposure with the easy to use front ring control via aperture (f stop).
For me, the less button pushing and hold and then shift the better.
YRMV
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