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Stable Diffusion API

Image Generation · 2026-05-07 · ModelsLab Team

Fluxgram v1.0 Prompt Guide for Photorealistic Portraits (2026)

Practical prompt patterns for photorealistic portraits with Fluxgram v1.0. Lighting, lens, composition, and parameter tips.

Fluxgram v1.0 is a Flux-derived checkpoint optimized for portraiture. This guide collects prompt patterns that produce reliably photorealistic results.

Lighting prompts

  • “soft window light from the left, gentle shadow falloff”
  • “golden hour, warm key light, blue-cyan rim from behind”
  • “studio softbox, butterfly lighting, neutral background”

Lens and camera

  • “shot on Sony A7IV, 85mm f/1.4, shallow depth of field”
  • “medium-format Hasselblad portrait, fine grain, natural skin texture”

Negative prompt baseline

(over-saturated:1.2), plastic skin, extra fingers, blurry eyes, low quality

  • num_inference_steps: 30
  • guidance_scale: 5–6
  • scheduler: DPMSolverMultistepScheduler