I've only shot 2 rolls of the new 120 Portra 400 of my nieces four year old son, I had a couple of the negs.blown up by my local pro lab to 20"X16" and I'm very impressed the quality and grain structure you can get with this 400 I.S.O.film even at exhibition print size was unheard off a few years ago, and it still has the Portra colour palate and skin tone reproduction we all love.