ComfyUI Node: Nano Banana (Gemini 2.5 Flash Image)

Nano Banana (Gemini 2.5 Flash Image):

The ComfyUI_NanoBanana node, also known as "Nano Banana (Gemini 2.5 Flash Image)," is designed to enhance your AI art creation process by providing a robust framework for generating high-quality images with customizable parameters. This node is particularly beneficial for artists looking to experiment with different levels of creativity and image quality while maintaining control over the output's aspect ratio and character consistency. It integrates content safety filters to ensure that the generated images adhere to safety standards, making it a reliable tool for both professional and personal projects. The node's primary goal is to offer a flexible and user-friendly interface that allows you to fine-tune your image generation process, resulting in visually appealing and contextually relevant artwork.

Nano Banana (Gemini 2.5 Flash Image) Input Parameters:

temperature

The temperature parameter controls the creativity level of the image generation process. A lower value (0.0) results in more deterministic outputs, meaning the images will be more predictable and similar to the input data. Conversely, a higher value (1.0) allows for more creative and diverse outputs. The default value is 0.7, with a minimum of 0.0 and a maximum of 1.0, adjustable in steps of 0.1. This parameter is crucial for balancing creativity and consistency in your artwork.

quality

The quality parameter determines the image generation quality, offering options such as "standard" and "high." The default setting is "high," which ensures that the images are generated with the best possible detail and resolution. This parameter impacts the visual fidelity of the output, making it essential for projects where image quality is a priority.

aspect_ratio

The aspect_ratio parameter allows you to specify the desired output image aspect ratio. Available options include "1:1," "16:9," "9:16," "4:3," and "3:4," with "1:1" as the default. This parameter is important for ensuring that the generated images fit specific display or print formats, providing flexibility in how your artwork is presented.

character_consistency

The character_consistency parameter is a boolean setting that, when enabled, maintains character consistency across edits. This is particularly useful for projects that require a coherent visual narrative or when working with recurring characters. The default value is True, ensuring that your images retain a consistent style and character representation.

enable_safety

The enable_safety parameter is a boolean setting that activates content safety filters to prevent the generation of inappropriate or harmful content. With a default value of True, this parameter is essential for ensuring that the generated images are suitable for all audiences and adhere to community guidelines.

Nano Banana (Gemini 2.5 Flash Image) Output Parameters:

output_image

The output_image parameter represents the final image generated by the node. This output is the culmination of all the input parameters working together to produce a high-quality, contextually relevant image. The output_image is crucial as it is the primary result of the node's processing, providing you with a visual representation of your creative input and parameter adjustments.

Nano Banana (Gemini 2.5 Flash Image) Usage Tips:

• Experiment with the temperature setting to find the right balance between creativity and predictability for your specific project needs.
• Utilize the quality parameter to ensure that your images meet the desired level of detail and resolution, especially for professional presentations or prints.
• Adjust the aspect_ratio to match the intended display format, ensuring that your artwork fits seamlessly into its intended context.
• Enable character_consistency when working on projects that require a coherent visual narrative or recurring characters to maintain a consistent style.
• Keep the enable_safety filter active to ensure that all generated content is appropriate and adheres to community standards.

Nano Banana (Gemini 2.5 Flash Image) Common Errors and Solutions:

Image Generation Failed

• Explanation: This error may occur if the input parameters are set in a way that the node cannot process, such as an unsupported combination of settings.
• Solution: Review the input parameters and ensure they are within the supported ranges and combinations. Adjust settings like temperature and quality to more standard values and try again.

Output Image is Blurry

• Explanation: A blurry output image might result from a low quality setting or an overly high temperature value leading to excessive creativity.
• Solution: Increase the quality setting to "high" and reduce the temperature to a more moderate level to enhance image clarity.

Inconsistent Character Representation

• Explanation: This issue can arise if the character_consistency parameter is disabled, leading to variations in character depiction across edits.
• Solution: Enable the character_consistency parameter to maintain a consistent style and representation of characters in your images.