Quote Originally Posted by Krzys View Post
What about orange?
Orange darkens the blue sky more than yellow, but increases contrast and changes the way B&W film sees color.

I have a suspicion that high contrast is your real issue. Bright skies are not helped by filers, other than maybe a graduate filter. If you hesitate to use XP2, forget the filter idea and try a high-speed film like an ASA 400 and overexpose it by a stop (use it at 200), shorten the development by about 20% and you will get more control over shadows and highlights during printing.

If in doubt, overexpose and under-develop!