Do I need more focal length?
Focal Length Simulator is a tool to let you simulate longer focal length on you exist photos. This tool is designed to let you evaluate if you need longer focal length lens for you desire photo composition.
- En: https://mlouielu.github.io/focal-length-simulator/
- 台灣繁體: https://mlouielu.github.io/focal-length-simulator/?lang=zh_TW
You can use your gesture, mouse wheel, range bar, or enter focal length in "Current Focal Length (mm)" input box.
The red bounding box indicate the current focal length range in the photo.
Click "Reset Zoom" if you mess up something.
Note: The photo will not upload to cloud or server, your photo remain completely local.
Click "Choose File" and select the file you want to simulate.
Focal Length Simulator will try to parse your EXIF data to get the lens focal length. If it failed to obtain focal length, please enter it manually.
Last, click "Reset Zoom".