Yes, part of the sky is too bright,

Yes, part of the sky is too bright, I want to precise combustion sky the clouds rich detail comes out, I used the Litho Film burn mask, although this sky was dark but the details of the cloud was gone, I tried in Litho Film burn mask the following release of the original film negatives and diffusion increases the exposure time for part of the sky, but this cloud detail with the mountain and the sky will be clear signs of a transfer, even if I were careful bleaching Litho film burn mask feathering it to the edge of the mountain. Such a situation has puzzled me, especially in the need to have details of the bright extensive local exposure. So I often use photographic film made denser CRM, increase the dark and middle part of the density, due to the small photographic film contrast, often do not need the high light density will increase, the purpose is to increase the overall exposure so dark and middle part not to print affected let highlights dimmed. Litho Film due to the large contrast with, but not the density of the intermediate portion of the large production of CRM photo film, thus increasing the exposure time integral intermediate portion and the darkening highlights simultaneously. I conducted a high-density CRM photography film produced locally bleached to remove unwanted density, but there are still traces of the edge when printing.