Marnie wrote:

First time I've heard this. I switched lately from Velvia to Provia F because 
a lot on this list said it scanned better since Velvia is more color 
saturated. And that does appear to be true based on my recent scanning experience.

But what does low accutance mean? Huh?



REPLY:
Accutance is basically another word for sharpness. More precisely how parts of an 
image is separated from another adjacent parts. Provia F is in reality less sharp than 
Kodachrome 200; a very coarse grained film, but it has much higher resolution. Provia 
F is significantly less sharp than both Velvia and Kodachrome 25; it only about "half" 
as sharp but resolve more. In real life Provia F shown more deatil but the details are 
fuzzy whereas eg. Kodachrome show less detail but the details it shown are very sharp. 
I actually prefer high accutance before high resolution (within reason) and it is also 
what digital does well. I'm certain that digital will affect lens designers choice of 
compromises in lenses.

Pål 




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