Use this free, web-based anamorphic lens desqueeze ratio calculator to determine your final cinema camera aspect ratio and resolution for professional video editing.
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Anamorphic Lens Desqueeze Ratio Calculator
Overview
A professional, high-performance web tool designed for cinematographers, DITs, and video editors. This single-page application allows users to instantly calculate the corrected resolution and aspect ratio of footage shot with anamorphic lenses. The design focuses on high legibility, speed, and precision.
Key Features
- Live Calculation: Real-time updates as users adjust input parameters.
- Preset Library: Quick selection for common anamorphic squeeze factors (1.33x, 1.5x, 1.8x, 2.0x).
- Custom Input: Full control to manually define width, height, and custom squeeze ratios for exotic lenses.
- Visual Aspect Ratio Display: A clear readout of the final aspect ratio (e.g., 2.39:1, 2.40:1).
- Resolution Scaling: Automatic calculation of the new horizontal or vertical resolution required for the desqueezed image.
UI/UX Specification
- Layout: A clean, centered "Card" interface on a soft, light-gray background (#f3f4f6). The tool itself sits in a white (#ffffff) container with a subtle shadow.
- Responsiveness: Single-column layout for mobile, expanding to a two-column layout for tablets and desktops (Inputs on the left, Results on the right).
- Interactions:
- Inputs utilize smooth focus transitions.
- Calculation results animate with a soft fade-in effect when values change.
- No "submit" buttons; calculations happen "on input" for a seamless experience.
Color Palette (Light-Mode Only)
- Primary: #2563eb (Modern Blue) for buttons and active states.
- Background: #ffffff (White) for the main application container.
- Secondary Background: #f9fafb (Light Gray) for page backdrop.
- Text: #1f2937 (Slate Gray) for primary text; #6b7280 (Cool Gray) for labels.
- Border: #e5e7eb (Light Slate) for input fields.
Developer Directives (Strict Implementation)
- Single File: All HTML, CSS, and Vanilla JavaScript must reside in one
.htmlfile. - State Management: Use standard JS variables or object literals. NO
localStorage,sessionStorage, or cookies. - Sandboxed Compatibility:
- Do not trigger alerts/popups. Use custom HTML/CSS modals if messages are required.
- Ensure all links have
target="_blank" rel="noopener noreferrer".
- Performance: Prioritize Vanilla JS over any heavy libraries. Use CSS Flexbox/Grid for layout.
- Design System: Maintain a "SaaS-standard" professional aesthetic. Use a sans-serif system font stack (e.g., system-ui, -apple-system, sans-serif).
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Frequently Asked Questions
Everything you need to know about using this application.
What is an anamorphic desqueeze ratio and why is it important?
An anamorphic desqueeze ratio refers to the multiplier used to horizontally expand footage captured with an anamorphic lens. Because anamorphic lenses squeeze a wide field of view onto a standard sensor, the raw footage appears horizontally compressed or 'tall and thin' when viewed without correction. Calculating the correct desqueeze ratio is essential for video editors and colorists to ensure the image appears with the correct geometry. Incorrect desqueeze settings result in distorted faces and distorted architectural lines, which can ruin the professional look of a cinematic production.
How do I use this calculator for my camera sensor?
Simply input your source resolution—the dimensions of the video file as it was recorded on your camera—and select the squeeze factor of your specific anamorphic lens. Common squeeze factors include 1.33x, 1.5x, 1.8x, and 2.0x, which are industry standards for various lens manufacturers. The calculator will automatically update the output resolution and provide the resulting aspect ratio. This allows you to set your project sequence settings in software like DaVinci Resolve or Adobe Premiere Pro accurately before you begin editing your footage.
Does this tool save my resolution or lens settings?
This application operates strictly in-memory. For security and privacy reasons, it does not use local storage, cookies, or any browser-based databases. Every time you refresh the page, the calculator resets to its default state, ensuring no data persists. Because this tool runs entirely within your browser in a sandboxed environment, you can be confident that your session data remains private. It does not transmit any of your input data to a server, keeping your project information secure.
Is this calculator compatible with all camera sensors?
Yes, this tool is sensor-agnostic. It works by performing mathematical operations based on the width and height input values you provide, regardless of the camera manufacturer. Whether you are shooting on a full-frame, Super 35, or Micro Four Thirds sensor, the math remains the same. You can manually enter custom sensor resolutions if your specific camera isn't in our quick-select presets. This makes it a versatile utility for every videographer, whether you are using high-end cinema cameras or mirrorless hybrid cameras.
