ULTRA_REALISM_4STEP_LCM_SIMPLE CREATES VERY DETAILED AND REALISTIC IMAGES IN 4 SIMPLE LCM STEPS.

ULTRA_REALISM_4STEP_LCM_SIMPLE

User Guide: ULTRA_REALISM_4STEP_LCM_SIMPLE by Vivek Chauhan (vivekchahaman600 / ChauhanVivek)OverviewULTRA_REALISM_4STEP_LCM_SIMPLE is an SDXL 1.0 full checkpoint distilled for ultra-detailed photorealism in just 4 steps.It is a complete checkpoint (not a LoRA). The LCM (Latent Consistency Model) distillation and the “simple” scheduler are baked into the weights. Speed and the photorealistic look are already built in — you only get the intended quality when you match the exact schedule it was trained/distilled for.Best for: Portraits, full-body photography, street and interior scenes, editorial stills, and character work that should read as camera-captured, with visible skin texture, natural light, and realistic materials. Not intended for: Painterly, oil, watercolour, pencil, or anime styles. Use your matching Chauhan style checkpoints or stack a light style LoRA for those.Critical Settings (Do Not Deviate)These are required. Using the “normal” SDXL recipe will produce poor results.SettingValueNotesCheckpointULTRA_REALISM_4STEP_LCM_SIMPLELoad as the model, not as a LoRASamplerLCMRequired. Not Euler, not DPM++ 2MSchedulersimpleRequired. Not Karras, not exponentialSteps4Required. Only trial 5–6 if neededCFG Scale1.0Required. Stay 1.0–1.5. Above ~2 the path breaksDenoise1.00Full generation. Lower only for img2imgClip Skip1Do not leave at 2 (SD 1.5 habit)Resolution1024×1024 or 832×1216 (and similar)Stay near 1 megapixel for best resultsComfyUI KSampler exact values: steps: 4 · cfg: 1.0 · sampler_name: lcm · scheduler: simple · denoise: 1.00Why These Settings Matter<ul><li>At CFG 1.0, classifier-free guidance is effectively off. The negative prompt does almost nothing. Write the entire picture in the positive prompt.</li><li>If a defect refuses to leave, raise CFG only to 1.2–1.5 and keep the negative short. Never climb to 5–7.</li><li>Longer schedules or different samplers do not “improve” this model — they break the distilled path.</li></ul>Recommended Workflow1. Basic Text-to-Image (Forge / A1111 / ComfyUI)<ul><li>Load the checkpoint.</li><li>Set sampler = LCM, scheduler = simple, steps = 4, CFG = 1.0.</li><li>Resolution: 1024×1024 or portrait/landscape near 1 MP.</li><li>Positive prompt only (or very light negative).</li><li>Generate.</li></ul>2. Face Enhancement<ul><li>ADetailer (or equivalent face detailer) is highly recommended for solo portraits.</li><li>Keep denoising strength low (under ~0.3–0.4) to avoid face drift.</li></ul>3. Upscaling / High-Res<ul><li>First pass at native resolution (1024-class).</li><li>Then use your preferred upscaler (Ultimate SD Upscaler, 4x-UltraSharp, etc.) with low denoise (0.15–0.35) if refining.</li><li>Because the base is already sharp and realistic, heavy second-pass denoising is usually unnecessary.</li></ul>4. Img2Img<ul><li>Same sampler/scheduler/steps/CFG.</li><li>Lower denoise according to how much you want to change the source (typical 0.3–0.6).</li></ul>Prompting Tips<ul><li>Write clear, photographic descriptions.</li><li>Emphasize lighting, skin texture, camera, and materials: photorealistic, realistic skin texture, natural lighting, sharp focus, 35mm, f/1.8, detailed pores, ordinary daylight…</li><li>Keep prompts relatively focused. Overly complex or conflicting prompts can reduce realism.</li><li>Negative prompts are largely ignored at CFG 1.0. Only use a short negative if you raise CFG slightly.</li><li>Works well with character LoRAs (including your own such as Vivekamarisvoss) at moderate strength (0.6–0.9). Prefer one strong identity LoRA at a time.</li></ul>Common Mistakes to Avoid<ul><li>Using DPM++ 2M Karras + 20–30 steps + CFG 5–7 → broken results.</li><li>Leaving Clip Skip at 2.</li><li>Treating it like a regular SDXL or Lightning model.</li><li>Raising steps or CFG “to get more quality.”</li><li>Expecting painterly or anime output.</li></ul>Compatibility Notes<ul><li>Forge / Automatic1111: Full support. Ensure LCM sampler is available (it is in modern builds).</li><li>ComfyUI: Native. Use the standard KSampler with the exact values above.</li><li>VAE: Use the built-in or a high-quality SDXL VAE (auto is usually fine).</li><li>Compatible with most SDXL ControlNets, IP-Adapters, and detailers when used carefully.</li><li>File is a standard safetensors checkpoint (~6.46 GB typical for SDXL).</li></ul>Quick Reference Cardtext<pre><code>Model: ULTRA_REALISM_4STEP_LCM_SIMPLE (SDXL)
Sampler: LCM
Scheduler: simple
Steps: 4
CFG: 1.0 (max 1.5)
Clip Skip: 1
Res: ~1024×1024</code></pre>This model is designed for speed and camera-like realism. Match the schedule, write clean photographic prompts, and it delivers sharp, detailed, photorealistic images in four steps.

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