Nicolas Hanson May 9, 2018 Share May 9, 2018 I'm asked to color a burned out/clipped sky blue to make it look like summer. I can't reach a natural blue probably because of the density level and everything I do ends up looking fake. Any tips? Sky replacement is not an alternative. Link to comment Share on other sites
Frank Wylie May 10, 2018 Share May 10, 2018 (edited) Why isn't sky replacement an alternative when there is no detail to enhance? In the distant past, cinematographers used to carry around large diapositive glass plates with images of clouds on them to cover bald skies. They would put them on a C-stand, position them in the frame to fill the sky and shoot. https://books.google.com/books?id=Dgd6AgAAQBAJ&pg=PA48&lpg=PA48&dq=cloud+plates+cinematography&source=bl&ots=8g_HsoDjFS&sig=1ZAy7dA4BBB1k0ABYM7O0Ldpv5U&hl=en&sa=X&ved=0ahUKEwim5o3p__vaAhVvc98KHcZwCnoQ6AEIOTAC#v=onepage&q=cloud plates cinematography&f=false Edited May 10, 2018 by Frank Wylie useless trivia injected by old man 2 Link to comment Share on other sites
Nicolas Hanson May 10, 2018 Author Share May 10, 2018 Interesting technique! It's not an alternative because it would be a very time consuming roto job as there are a lot of moving foreground elements. Link to comment Share on other sites
Nicolas Hanson May 13, 2018 Author Share May 13, 2018 Another issue with the footage is that the trees that are surrounded by the blown out sky got magenta edges. It's clearly artifact and I've reduced it some of it with hue-vs-sat desaturating the magenta. But it still isn't 100% gone. Link to comment Share on other sites
Frank Wylie May 14, 2018 Share May 14, 2018 Ah, that's a hard one... Might key it and pull a matte, reverse it and erode the magenta out, but that will typically leave a smooth, defined edge that looks artificial. If you could find a way to inject some noise along the matte edge, it might composite successfully over a replacement sky, but you'd probably have to grain/noise that up too in order for it to blend. Hard to speculate without seeing the image... Link to comment Share on other sites
