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LTX-2.3 photorealism: ComfyUI users refine video workflows with LoRAs

A ComfyUI practitioner running LTX-2.3 image-to-video workflows asks the community for LoRA recommendations and rendering advice to improve photorealistic output quality.

May 16, 2026

LTX-2.3 photorealism: ComfyUI users refine video workflows with LoRAs

A ComfyUI user running LTX-2.3 for image-to-video synthesis asked the community this week how to push photorealism further, noting the model is "very amazing" but seeking LoRA recommendations and workflow tweaks to improve render quality.

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Watch: LTX-2.3 photorealism: ComfyUI users refine video workflows with LoRAs

The practitioner is using a standard image-to-video workflow in ComfyUI with LTX-2.3, Lightricks' open-weight video diffusion model released in late 2024. LTX-2.3 ships with a 22-billion-parameter checkpoint and native support for image conditioning, making it a popular choice for local video synthesis. The user mentioned handling voice separately in DaVinci Resolve, suggesting a multi-stage pipeline for talking-head or narrative video projects.

LTX-2.3's open weights mean practitioners can fine-tune or apply LoRAs without server-side restrictions, a key advantage for photorealistic work that often requires uncensored training data. The model supports resolutions up to 768×512 at 25 frames and runs on consumer GPUs with 24GB VRAM when quantized. Community-shared LoRAs for photorealism—often trained on portrait datasets or cinematic stills—have circulated on Civitai and HuggingFace since the model's release, though the original poster did not specify which, if any, they had already tested.

The question reflects a common workflow challenge in open-weight video diffusion: base checkpoints often excel at motion coherence but require additional fine-tuning or prompt engineering to match the photographic fidelity of closed models like Runway Gen-3 or Pika 1.5. ComfyUI's node-based interface lets users stack upscalers, color-grading nodes, and multi-pass samplers to refine output, but identifying the right combination remains trial-and-error without published benchmarks for photorealism on LTX-2.3 specifically.