So have this panorama, and everytime I do one I get this distortion and I dont like it. I normally take the pictures around 24mm ff, and merge them in light room. Does anyone know how to prevent this or fix it?
Auto Photoshop analyzes the source images and applies either a Perspective, Cylindrical, and Spherical layout, depending on which produces a better photomerge.
Perspective Creates a consistent composition by designating one of the source images (by default, the middle image) as the reference image. The other images are then transformed (repositioned, stretched or skewed as necessary) so that overlapping content across layers is matched.
Cylindrical Reduces the “bow‑tie” distortion that can occur with the Perspective layout by displaying individual images as on an unfolded cylinder. Overlapping content across files is still matched. The reference image is placed at the center. Best suited for creating wide panoramas.
Spherical Aligns and transforms the images as if they were for mapping the inside of a sphere, which simulates the experience of viewing a 360-degree panorama. If you have taken a set of images that cover 360 degrees, use this for 360 degree panoramas. You might also use Spherical to produce nice panoramic results with other file sets.
Collage Aligns the layers and matches overlapping content and transforms (rotate or scale) any of the source layers.
Reposition Aligns the layers and matches overlapping content, but does not transform (stretch or skew) any of the source layers.
I like Cylindrical. Hope that helps
PS: You don't always have to do 360º - try other, smaller fields for different effects
1. The Walls on the side "caving in" This is a Problem with the Level - you sadly don't have enough control in Lightroom to fix that. You can either use a different panorama software with more controls (Hugin for no money, Autopano Pro for some money) to fix that while creating the panorama, or use Photoshops awesome "Adaptive Wide Angle filter" to fix that.
2. The Curved lines where the walls intersect the roof This is due the cylindrical projection - since you show 360° you can't use the normal rectangular projection like you get from single photos - this "distortion" you can't avoid with an image that wide.