The best thing about Provia is its reciprocity characteristics. Velvia pretty much sucked after a few seconds of exposure.
You can deftly skirt around reciprocity by using hedge metering (spot metering especially) and providing either 0.3 to 0.7 (usually too much) or more sensibly, 0.5 additioinal over an additive/averaged multispot measurement. This is what so many people forget to do, even with an onboard meter — to add "just the right amount" of correction.
.::Gary Rowan Higgins
A comfort zone is a wonderful place. But nothing ever grows there.