How does Reality Capture determine ‘optimal’ texture quality?
Obviously the nature of the source photographs means that this varies greatly between images and my concern (and my experience) is that what RC considers ‘optimal’ is actually below the maximum quality of the source. The result being that your texture is not as high quality as it could be, even if there’s a risk of some bits being soft/blurred.
There’s also the fact that unwrapped models can be taken directly into other software (Mari etc.) for further processing of textures. Not using the maximum UV coverage significantly compromises the achievable quality.
It’s clear that most people’s expectations of ‘optimal’ unwrapping is to maximise the coverage, regardless of texture size, which is why this topic comes up so often. Please add an option for ‘maximal UV coverage’ in the unwrap settings, and everyone will be happy.