Bū tools
Viewfinder
Your camera framed like a 35, 50 or 85 mm.
What it does
Your device’s camera, cropped to show what a 35, 50 or 85 mm lens would frame on a full-frame camera, with the frame of your format. To scout a location or prepare a shot.
- Phones see like a lens of about 26 mm (main camera, full-frame equivalent): set yours under “Your device’s camera”. Wider focal lengths can’t be simulated (greyed).
- The longer the focal length, the more the image is cropped: at 85 mm or 135 mm it gets soft. It shows the framing, not the image quality.
- Perspective depends on where you stand, not on the lens: stand where the camera will be.
- Start full screen: the camera fills the screen, always sideways (upright for 9:16: hold your phone the way the buttons read), with the focal lengths, the frames and the shutter button on top of the image. × closes it.
- Photo saves the frame as an image, with the focal length written on it. Nothing is sent.
- When a web app uses the camera, the iPhone shows a red indicator, even though nothing is recorded: it is a system warning that the app cannot change. Here nothing is recorded or sent, the microphone is never used, and the camera turns off as soon as you close full screen, leave the tool or the app.
Free, no account, nothing is sent: it runs in your browser, even offline.
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