Fine-tuned Qwen Image 2.1 autoencoder for RGBA / HDR-oriented reconstruction. The goal is stronger dynamic range, color volume, and detail energy for HDR-style workflows—not perfect fidelity to the source frame. Relative to ground truth and compared with base Qwen 2.1 VAE (VAE A): VAE B deliberately overshoots GT on Lab color volume, edge density, and gradient energy. VAE A stays closer to GT on SSIM/PSNR but compresses color volume and softens detail. That tradeoff is the point of this checkpoint. - Uses the VAE’s own latentsmean / latentsstd (no FLUX/SD 0.18215 scaling) - Trained / evaluated around 512–1024 resolution; spatial size should be divisible by 16 - HDR-oriented encode/decode in…