MERIDIAN/

How wide your shot was. Decides how much of the sphere it occupies — a phone main camera is around 70°, ultrawide around 105°. Wrong value and the horizon bends in the result.

Positive if you were aiming up, negative if down. Shifts the plate off the horizon so the model knows where the ground is.

Dissolves the photo's border into the empty area. At 0 you get a hard rectangle, which Flux tends to read as a letterboxed film still and finishes with fake studio logos along the bottom. Around 10–20% kills that without losing much of your shot.

Straddle the seam

Splits your photo across the wrap so the join lands inside the original photograph, where it matches by definition. Flux has no idea the image wraps — it fills left to right like any picture, so the two far ends never agree. This sidesteps that entirely. Cost: your photo ends up behind you rather than in front, which is just a rotation you can set in Blender.

Send the raw photo instead

Skips the plate and hands the model your photo as-is. Purpose-built panorama models build the sphere themselves and choke on a masked plate — the alpha channel gives them four channels where they expect three, which is what "tensor a (3) must match tensor b (4)" means. On for those models, off for Flux Fill. Everything above stops applying while it's on.

Low numbers make it match your photo's colour, light and mood closely but wander from the words. High numbers obey the prompt literally and drift from the photo's look. If the result feels like a different room, come down.

Rolls the panorama half a width so the wrap sits in the middle of the frame, masks a band over it, and has an inpainting model paint across the join with real context on both sides — then rolls it back. A generator can never do this, because it never sees the two ends at the same time. Do this before upscaling.

Repair the seam

Wraps a strip from each edge around to the other side before upscaling, so the upscaler sees continuous content across the join instead of a border, then crops the padding back off. Without this the 8K pass puts a fresh seam into an image you already repaired.

This upscaler redraws rather than sharpens, so it needs to know how much licence it has. Low sticks to what's there and just cleans it up. High invents stone grain, brass patina and steam structure — better on soft sources like this one, but it will change things. 0.4–0.6 is the useful range.

Seamless tiling mode

The upscaler's own tiling option. It wraps both axes though, and an equirectangular should only wrap horizontally — so it may do something strange at the poles. Worth racing against the padding above to see which scores better.

Restore the original photo

Composites your untouched upload back over its own patch of the finished panorama at full resolution. Your photo gets shrunk to a few hundred pixels to fit the plate, so without this the upscaler is inventing detail for the one region where real detail already exists. Off when you sent the raw photo, since there's no known patch to restore.

Upscale

Convert to HDRI

A PNG tops out at pure white, so your lamps carry the same brightness as a grey wall and Blender lights the scene flat. This finds the pixels that are obviously emitting and pushes them far past white into real radiance, then writes a Radiance .hdr you can drop straight into an Environment Texture node.

Everything brighter than this is treated as a light source. The preview marks what's selected — aim for lamps and shafts only. Too low and your floor starts glowing.

How much brighter than white the light sources become. This is what produces hard shadows and specular highlights. Around 50× for soft interior lamps, 300×+ for anything standing in for sunlight.

Lifts the whole image, shadows included. Use this if the scene is lit but too dim; use boost instead if it's bright enough but looks flat.

Export .hdr