Junior Mr. X FX Artist Tyler Britton shares some insights into the development of his Nuke Gizmo that will handle adjusting depth-of field, which is a very unique and interesting tool in itself! But what makes it stand out even further from other similar products on the market? Well for one thing; this gizmo can also take transparent surfaces or semi-transparent ones into account when applying your desired effect so you don’t have any color bleeding at all during post production time afterwards. 10/10 would recommend.
However, a more advanced compositing technique called depth of field can be applied to composite objects through transparent or semi-transparent surfaces.
This is accomplished by including the entire scene into one render pass for each camera view and then applying post processing effects that remove anything outside this defined sphere around your subject which would otherwise be out focus due to shallow DOF (depth Of Field).
When one wants to incorporated depth of field in their scene using a z depth pass, it does not take into account transparent or semi-transparent surfaces through the shaders in the scene
Tyler notes that this can be a big problem because transparent surfaces should technically have different rules than solid ones. For example, when you are shooting through glass objects with your camera and focus is on something in front of them like the background behind it will be slightly out-of-focus while focusing on what’s happening right next to or near up close ( foreground ).
Tyler’s Depth of Field Nuke Gizmo lets you add values to image channel isolated by user selected masks. You can manually adjust the depth for transparent surfaces in a shot, making it easier than ever before!
The Nuke Gizmo is the perfect accessory for any photographer who wants to be prepared on set. It also lets you customize which masks that they will use as well as what image channel displays, without having dive into it yourself!
Tyler Britton goes through his setup in great detail, showing the process as well as some examples for compositing depth of field with transparent objects using Nuke. You can download a plugin here that will let you do this on your own!