So why not just stop the lens down to f/4 at 18mm? Then it stays at f/4 for the entire range.
That's what I do on my only variable aperture Canon lens if I'm shooting manual. Otherwise, I'll often just let auto ISO make up the difference as I zoom.
I think part of the reason I don't like the unmarked ring on Fuji's variable aperture lenses is that seeing and setting the aperture means trying to read an LCD in sunlight unless I put the camera to my face. I got a Hoodman eye cup for the EVF which helped tremendously but of course doesn't help the big screen. I know it's a minor complaint but it detracts from the tactile Fuji experience IMO.
Olympus
