Pano360 dataset consists of 35K panoramic images of which 34K are from Flickr and 1K rendered from photorealistic 3D scenes. We use it to train CamCalib. SPEC-SYN is a photorealistic synthetic dataset which has accurate ground-truth SMPL and camera annotations. We use it for both training and evaluating SPEC. SPEC-MTP is a crowdsourced dataset consisting of real images, camera calibration and SMPL-X fits. We use it only for evaluation purposes in the experiment.