ICLight Studio

The prompt box takes ordinary language and turns it into a lighting setup. Write "golden hour from behind, soft rim on the shoulders" and the model moves the light source, adjusts color temperature, and draws new shadow edges. No layer masks, no exposure bracketing, no reference photo required.

Four buttons set the key light to the left, right, top, or bottom of the frame. This is the fastest way to fix a portrait where the light came from the wrong side, and it pairs well with a short prompt that sets the mood. Direction changes are strong enough to alter the shape of a face, so compare against the original before exporting.

Portrait relighting is where the app spends most of its tuning, and the model reads facial structure, keeping features, skin tone, and expression intact while it rebuilds the illumination. That matters for client work, where a relit face that no longer looks like the subject is worse than a flat photo. Fine detail such as hair edges and glasses still needs a check at full size.

A set of ready-made looks covers natural daylight, studio setups, and warmer interior moods. Presets suit people who don't want to write prompts, and they work as a starting point that you can refine with a sentence or two. Each preset shifts color and contrast along with direction, so skin tones can warm up quickly.

Steps run from 1 to 50 and control how much detail the model rebuilds. CFG runs from 1 to 32 and sets how literally the prompt is followed, with 2.0 as the default. High-res scale goes up to 4x and denoising has its own slider, which is where you balance a natural result against an obvious effect.

Results save as webp, png, or jpg, and you can set the output dimensions instead of accepting a fixed size. Webp keeps file size down for web use, while png is the safer pick when the image goes back into an editor. The preview updates before export, so a bad run costs nothing but time.