ComfyUI Node: Flux Resolution Calc

Flux Resolution Calc:

The FluxResolutionNode is a specialized tool designed to calculate image dimensions based on a specified megapixel value and aspect ratio. This node is particularly useful for AI artists who need to generate images with precise resolutions, ensuring that the final output meets specific size requirements. By allowing users to select from a range of predefined aspect ratios or input a custom ratio, the node provides flexibility and control over the image's proportions. The primary goal of the FluxResolutionNode is to simplify the process of determining the optimal width and height for an image, taking into account the desired megapixel count and aspect ratio, which is crucial for maintaining image quality and consistency across different projects.

Flux Resolution Calc Input Parameters:

megapixel

The megapixel parameter determines the total number of pixels in the image, expressed in millions. It directly influences the overall size and quality of the image. Users can choose from a range of options, including "0.1", "0.5", "1.0", "1.5", "2.0", "2.1", "2.2", "2.3", "2.4", and "2.5", with "1.0" being the default value. A higher megapixel value results in a larger and potentially more detailed image, while a lower value produces a smaller image.

aspect_ratio

The aspect_ratio parameter specifies the proportional relationship between the width and height of the image. It offers a variety of predefined options, such as "1:1 (Perfect Square)", "2:3 (Classic Portrait)", "16:9 (Panorama)", and many others, with "1:1 (Perfect Square)" as the default. This parameter is crucial for determining the shape and orientation of the image, allowing users to select a ratio that best fits their artistic vision or project requirements.

custom_ratio

The custom_ratio parameter is a boolean option that allows users to enable or disable the use of a custom aspect ratio. When set to "Enable", users can input their own aspect ratio in the custom_aspect_ratio parameter. The default setting is "Disable", which means the node will use the selected predefined aspect ratio. This feature provides additional flexibility for users who need to work with non-standard image dimensions.

custom_aspect_ratio

The custom_aspect_ratio parameter allows users to define a specific aspect ratio when the custom_ratio parameter is enabled. It accepts a string input in the format "width:height", with "1:1" as the default value. This parameter is particularly useful for artists who require unique image dimensions that are not covered by the predefined aspect ratios.

Flux Resolution Calc Output Parameters:

width

The width output parameter represents the calculated width of the image in pixels. It is determined based on the selected megapixel value and aspect ratio, ensuring that the image maintains the desired proportions and resolution.

height

The height output parameter indicates the calculated height of the image in pixels. Like the width, it is derived from the chosen megapixel value and aspect ratio, providing a balanced and proportionate image size.

resolution

The resolution output parameter provides a string representation of the image's dimensions in the format "width x height". This output is useful for quickly understanding the overall size of the image and ensuring it meets the specified requirements.

Flux Resolution Calc Usage Tips:

• To achieve the best image quality, select a higher megapixel value, especially for projects that require detailed visuals.
• Use the custom_ratio feature to create images with unique dimensions that are not available in the predefined aspect ratios.
• Consider the aspect ratio carefully to ensure the image fits the intended display or print format, such as a square for social media or a wide panorama for landscapes.

Flux Resolution Calc Common Errors and Solutions:

Invalid aspect ratio format

• Explanation: This error occurs when the custom aspect ratio is not provided in the correct "width:height" format.
• Solution: Ensure that the custom aspect ratio is entered as two integers separated by a colon, such as "3:2".

Megapixel value out of range

• Explanation: This error happens when a megapixel value outside the allowed range is selected.
• Solution: Choose a megapixel value from the available options: "0.1", "0.5", "1.0", "1.5", "2.0", "2.1", "2.2", "2.3", "2.4", or "2.5".

Custom ratio enabled without aspect ratio

• Explanation: This error occurs when the custom_ratio is enabled but no custom aspect ratio is provided.
• Solution: Provide a valid custom aspect ratio in the custom_aspect_ratio parameter or disable the custom_ratio option.