Hi, shot a few rolls of Ektachrome 100 Plus at 100 and found it's bluish at certain level. overall I lose some shadow since I was metering the overall scenes at a hight contrast lighting (6pm). So I am wondering.. 1.what is the true speed of this film. 2. if I under-exposed it, will it give me blue shift? if so, does this apply to all film? Thanks.