<h2 id="technical-camera-control:-focal-length-slider">Technical Camera Control: Focal Length Slider</h2>This LoRA is designed specifically for Flux Klein 9B to provide granular control over the virtual lens focal length, allowing you to shift from ultra-wide vistas to compressed telephoto shots.The Standout Feature: Composition Preservation Unlike standard prompting, this slider is highly composition-aware. When used—especially in img2img / edit mode—it maintains the original shapes and global contrast positions. Instead of generating a completely new image, it strictly alters the perspective distortion. It effectively mimics a physical "Dolly Zoom" (Vertigo effect), virtually moving the camera closer or further away to compensate for the focal length shift while keeping your subject anchored in the frame.<ul><li>Negative Values (Towards -5.0): Mimics Wide Angle lenses. Expands the field of view, increases peripheral perspective distortion, and pushes the background away.</li><li>Positive Values (Towards +5.0): Mimics Telephoto/Long lenses. Flattens the perspective, isolates the subject, and compresses the background tightly.</li><li>Extreme Values: You can push the weights beyond the ±5.0 limits for extreme or experimental distortions, though you may need to balance the prompt.</li></ul><h3 id="known-behaviors-and-pro-tips-(v2-in-progress)">Known Behaviors &amp; Pro-Tips (V2 in Progress)</h3>Because this LoRA pushes the model's spatial understanding, there are two minor biases at higher strengths:<ul><li>Wide Angle Bias (-): Introduces a slight oversharpening effect.</li><li>Telephoto Bias (+): Can result in a slight loss of global contrast.</li></ul>

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