Quote Originally Posted by ath View Post
My experience with Fomapan 100 is limited to two 35mm rolls which I developed in XTOL 1+1 to a CI of ca. 0.65 in 2009.
The grain in the prints was visibly finer than that of ACROS in the same developer.
That's strange. The RMS numerology says Fomapan should be a *lot* grainier: 13.5 vs 7! Even granting that RMS grain measurements don't always align with people's perceptions, it seems surprising that a difference of almost a factor of two would disappear like that.

I'm curious---subjectively, were they both "pretty grainy", "basically grainless", or somewhere in between?