Knowledge Base
Find answers to frequently asked questions about our services, products, and processes.
Why are the vertical lines converging in my real estate 360 panoramic interior photos?
Converging verticals in 360 panoramas are caused by lens distortion and imprecise leveling of the camera during capture. The 360 camera must be perfectly level (use a leveling base or tripod with bubble level). In post-processing, apply tilt-shift corrections in PTGui or your stitching software. Some cameras offer in-camera horizon leveling that corrects minor misalignment automatically during capture.
What causes severe stitching errors when capturing a 3D virtual tour in a narrow hallway?
Narrow hallways create parallax errors because nearby surfaces shift dramatically between the camera's multiple lenses. The stitching algorithm struggles when objects are very close to the camera (under 1–2 meters). Solutions: position the camera in the center of the hallway, use a lens with less parallax offset, capture more positions closer together, and in post-production use parallax-aware stitching software that handles close-range geometry.
Why is my Zillow 3D Home tour consistently failing to process the interactive floor plan?
Common causes: insufficient overlap between panoramic capture positions (aim for 50%+ visual overlap), inconsistent lighting between rooms causing stitching failures, reflective surfaces (mirrors, large windows) confusing the depth estimation, or using a camera model not fully supported by Zillow's processing pipeline. Ensure you follow Zillow's recommended capture pattern — methodical, consistent spacing, with the camera at chest height in each room's center.