Join Mark Lefitz for an in-depth discussion in this video Examining how the HDRI was created, part of Photorealistic Lighting with Maya and Nuke.
Let's take a look at how our HDRI was created.…For our shoot, we used a standard, non-full frame Canon 7D DSLR,…keeping in mind that full frame DSLRs are sometimes cost-prohibitive.…Because we were using a DSLR with a smaller sensor, we therefore cannot…accommodate the use of a fisheye lens.…We can, however, use a rectilinear wide-angle lens.…This just means we have to take more pictures to cover the gaps that would…normally be covered using a wider angle lens.…
One of the side benefits of using a normal lens is that more stitching software…supports normal lenses.…On our 7D, what we used was a 10-20 mm extra wide-angle lens.…Since the 7D has a cropped frame, a crop factor of 1.6 has to be taken…into consideration.…Therefore, the focal length was set to around 10 mm, giving us the equivalent of…a 15 mm lens on a full frame camera.…Also, since our 7D can only auto-bracket three total stops, we manually…bracketed seven full stops;…three stops up, three stops down, and one stop in the middle.…
Mounting the camera on a tripod, we shot a full circle taking care to create a…
- Understanding image-based lighting
- Analyzing and color correcting the background plate
- Creating a 3D camera to match the plate
- Lighting with low-quality settings and proxies
- Setting light samples
- Setting up render passes
- Rendering mattes ground shadow, and occlusions passes
- Adding gamma correction in Nuke
- Adding the object to the plate and rendering the final composite
- Retouching the composite using Photoshop
Skill Level Intermediate
1. Image-Based Lighting
Correcting the HDRI5m 22s
2. Asset Integration
4. mental ray Rendering
5. Creating Secondary Passes
6. Compositing the Rendered Passes in Nuke
7. Final Touch-Ups in Photoshop
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