A nice and long article about special effects in Good Omens! :) A lot of info, such as:
Can you explain in detail about the design and the creation of the Wings?
Crowley and Aziraphale both have large wings when seen in their real forms. Initially, our concept artist Grant Bonser designed bat-style wings for Crowley but Neil Gaiman preferred to have feathers for both the demons and angels.
We built each feather based on swan wings ā which was most appropriate to the concept. We started building the feathers in geometry so that we had a map for our groom team to develop each feather. The wings were laid out in an anatomically correct way, with primary feathers (the long finger like feathers that feature at ends of wings); secondaries (above those on the ends of the wings) and coverts (top wings / fluffier wings). The wings were then re-groomed into feathers using Yeti. We modelled in a swanās wing bone structure and this was then all passed to the rigging team to ensure the feathers folded correctly and worked well together. Working together, the groom, modelling and rigging and animation teams refined the wings, referencing heavily the way a swanās wing physically folds and behaves to ensure that when doing our wing simulations, everything behaved realistically.
We decided to create the wing texturing in the look development phase. It was all shader based so that we could have complete control over colour variants and no one feather was the same hue, to break up the overall look making it more realistic.
Getting the right balance of iridescence on the black feathers and then ensuring the white feathers had enough detail and variation to stand out was challenging. We spent time in the look development stages tweaking the shaders and then when we got to actual shot production we were working very closely with Neil and our groom and creature effects team so that we were able to get a look that he and Douglas were really happy with.
Some of the shots needed to have a bespoke groom set up as we soon realised that when the animators were posing the wings at some angles they would not capture the correct shape or volume that was required for that specific shot, but this gave us the freedom to sculpt the groom and make sure that none of the detail was lost and so the wings looked and felt a part of the actors as they progressed thought the scene.
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