I wear eyeglasses and seem to need more eye relief than most. Both SFLs have enough ER for me. Raising the eyecups 1 or 2 stops from fully down works well. When I find just the right size o-rings, I might use them to make a stop 1/2 way between stops 1 and 2.How is the eye relief of 8x30 vs 8x40? Zeiss states the same 18mm for all SFL models, which is a bit unlikely. Or?
The 8x40 might have had a touch more. I say “ “might” because I didn’t have the opportunity to use them side by side.
I find the 8x30‘s eye relief similar to the eye relief offered by my 7x42 UVHD+ in side-by-side testing. From memory, I think the eye relief of the 8x30 SFL is a little more generous than the eye relief of 8x32 EL that I owned previously.