Understand Your Lens with Focal Length Multiplier
Camera sensors come in many sizes, but lenses are still named by their 35mm standards. The **Focal Length Multiplier** (Crop Factor) tool at **Online Tool Base** helps you calculate the "Effective Focal Length" of your lens on your specific camera body.
A 50mm lens on a Full Frame camera is a standard view. On an APS-C crop sensor, that same lens acts like a 75mm telephoto. **onlinetoolbase.online** clarifies this confusion, helping you choose the right lens for Wide Angle landscapes or tight Portraits, regardless of your camera brand.
Why Use This Tool?
When upgrading from a starter DSLR (Crop Sensor) to a Pro Mirrorless (Full Frame), your field of view changes dramatically. This calculator helps you plan your lens purchases. If you loved your 35mm lens on your Crop camera, you'll need a roughly 50mm lens on Full Frame to get the same look.
Key Features
- Preset Database: Includes factors for Canon (1.6x), Nikon/Sony (1.5x), and M4/3 (2.0x).
- Custom Factor: Enter manual multipliers for Medium Format or 1-inch sensors.
- Equivalence: Shows both the Focal Length and Aperture (DoF) equivalence.
How to Use
- Select your Sensor Size (e.g., APS-C).
- Enter the Lens Focal Length (e.g., 50mm).
- See the 35mm Equivalent (75mm).
- Use this info to frame your shot.
Technical & Privacy Note
Simple math. The **Focal Length Multiplier** from **Online Tool Base** runs locally. No equipment data is stored.