Depth of field refers to the zone of acceptable sharpness in a photo. A shallow DoF keeps the subject sharp while blurring the background and foreground — a hallmark of portrait lenses with wide apertures (like f/1.4). This tool uses radial blur mapping: a focus point defines the sharp center, and a smooth feathered gradient transitions into a Gaussian-style lens blur outward, mimicking real optical bokeh without needing expensive camera gear.

Regular Gaussian blur applies uniform softening across the entire image. Lens blur (or bokeh simulation) varies blur strength based on distance from the focal plane — exactly replicating how a physical camera lens works. Our tool creates a radially weighted blur where the focus area remains pin-sharp, and blur increases gradually with distance from your chosen focal point, complete with a customizable feather transition zone for natural-looking results.

Yes! That's one of the key advantages of this tool. Simply drag anywhere on the preview image to reposition the focus point in real-time. You can also scroll with your mouse wheel over the image to adjust the focus area size. All changes render instantly so you can fine-tune the composition until it looks perfect — no need to re-upload or reprocess.

The tool supports JPEG, PNG, WebP, and BMP formats. Maximum file size is 20MB. For optimal performance, images are processed at up to 1600px wide while maintaining the original aspect ratio. Larger images are automatically downscaled for processing but still produce high-quality output suitable for social media, presentations, and web use.

100% free — no sign-up required. All image processing happens entirely within your browser using client-side JavaScript and the HTML5 Canvas API. Your photos are never uploaded to any server, ensuring complete privacy and security. You can use this tool offline once the page loads. There are no watermarks, no usage limits, and no hidden costs.

• Blur Intensity — Controls how strong the out-of-focus blur appears (equivalent to lens aperture width). Higher values create creamier bokeh.
• Focus Radius — Sets the size of the sharp circular zone around your focus point. Adjust this based on how much of your subject you want in focus.
• Feather — Defines the transition width between sharp and blurred areas. A wider feather creates a smooth, natural falloff; a narrow feather produces a more abrupt shift (useful for creative effects like tilt-shift simulation).

To achieve a tilt-shift miniature look, set the Feather value very low (5–15), keep the Focus Radius moderate, and use a higher Blur Intensity (20–35px). This creates a narrow band of sharpness with rapid falloff, tricking the eye into perceiving real-life scenes as miniature models. For best results, use photos taken from an elevated angle looking down at a scene — just like real tilt-shift photography.