Quote Originally Posted by David H. Bebbington
The use of filters is very personal. One thing has changed in the last 40 years - way back then, you really did need to use a yellow filter to get "correct" tone rendering with b+w filters outdoors, skies would otherwise be too light or even print white. With modern films you do not need to do this, the color rendition is balanced.
David are you sure? Without at least a yellow filter in my outdoor pictures there is no differentiation between cloud and sky (and bright blue sky will print white) without a serious underexposure on the rest of the picture. Like you my standard outdoor filter is a yellow-green, which in addition to separating clouds and sky and lightening foilage a bit is also great for caucasian skins.