ComfyUI Node: ProPostVignette

ProPostVignette:

The ProPostVignette node is designed to apply a vignette effect to your images, enhancing their visual appeal by subtly darkening the edges and drawing attention to the center. This effect is commonly used in photography and cinematography to create a focal point and add a professional touch to your visuals. The node allows you to control the intensity and position of the vignette, providing flexibility to achieve the desired artistic effect. By adjusting parameters such as intensity and center position, you can create a variety of vignette styles, from subtle to dramatic, making your images more engaging and visually striking.

ProPostVignette Input Parameters:

image

The image parameter is the input image to which the vignette effect will be applied. This should be a tensor representing the image data. The image is processed in batches, allowing for efficient application of the vignette effect to multiple images simultaneously.

intensity

The intensity parameter controls the strength of the vignette effect. It is a float value that ranges from 0 to 1, where 0 means no vignette effect and 1 means maximum vignette effect. Adjusting this parameter allows you to fine-tune the darkness of the edges relative to the center of the image.

center_x

The center_x parameter specifies the horizontal position of the vignette's center. It is a float value that ranges from 0 to 1, where 0 represents the left edge of the image and 1 represents the right edge. This parameter allows you to shift the vignette effect horizontally to focus on different parts of the image.

center_y

The center_y parameter specifies the vertical position of the vignette's center. It is a float value that ranges from 0 to 1, where 0 represents the top edge of the image and 1 represents the bottom edge. This parameter allows you to shift the vignette effect vertically to focus on different parts of the image.

ProPostVignette Output Parameters:

IMAGE

The output parameter is the processed image with the vignette effect applied. This is a tensor representing the image data after the vignette effect has been added. The output image retains the same dimensions and format as the input image but with the vignette effect enhancing its visual appeal.

ProPostVignette Usage Tips:

• To achieve a subtle vignette effect, set the intensity parameter to a low value, such as 0.2 or 0.3.
• Experiment with different center_x and center_y values to create unique focal points in your images, especially if the subject is not centered.
• Use higher intensity values for a more dramatic effect, which can be particularly effective in black-and-white or high-contrast images.

ProPostVignette Common Errors and Solutions:

Image tensor shape mismatch

• Explanation: The input image tensor does not have the expected shape (batch_size, height, width, channels).
• Solution: Ensure that your input image tensor is correctly shaped and includes the batch dimension, even if you are processing a single image.

Intensity value out of range

• Explanation: The intensity parameter is set to a value outside the range of 0 to 1. - Solution: Adjust the intensity parameter to be within the valid range of 0 to 1.

Center_x or center_y value out of range

• Explanation: The center_x or center_y parameter is set to a value outside the range of 0 to 1.
• Solution: Adjust the center_x and center_y parameters to be within the valid range of 0 to 1.