http://www.thegnomonworkshop.com/tutorials/photogrammetry-for-production-artists/

Capture and create your own 3D props for production using photogrammetry with this comprehensive guide for Modo, Marmoset, Photoshop, Agisoft, Lightroom, and ZBrush. In this 4-hour workshop, John William Crossland, a Lead Principal Artist at Remedy Entertainment, sheds a light on the entire process for those looking to get started with photogrammetry on a small scale. He details several ways to achieve low, medium, and high-range scans and explains how to produce a decent-quality scan that can be used as a baseline for a production asset.   John walks through the entire process of creating a mountain boot asset using his tried-and-tested production workflow, from initial capture through topology clean-up, hard-surface modeling, and applying materials, before tackling the final renders. Throughout the demonstration, he shows various techniques to process scan data and how to create a clean, high-poly sculpt, as well as a low-poly mesh with UVs ready for texturing in Marmoset.   This photogrammetry workshop is designed to help those with limited experience to successfully produce a scan to be proud of. His pragmatic guide to photogrammetry goes through all the steps needed to process your scan data and take it all the way through to a final sculpt, including baking and materials. Upon completing this workshop, you’ll have gained many practical insights into the photogrammetry process and will have a solid guideline for starting your own projects with minimal setup needs.