ComfyUI Node: KSampler Adv. Fooocus

KSampler Adv. Fooocus:

The Fooocus_KSamplerAdvanced node is a sophisticated sampling tool designed for AI artists who want to generate high-quality images with enhanced control over the sharpness of the output. This node builds upon the capabilities of the standard KSamplerAdvanced by introducing an additional parameter for sharpness, allowing you to fine-tune the clarity and detail of your generated images. By leveraging this node, you can achieve more precise and visually appealing results, making it an essential tool for advanced image synthesis tasks.

KSampler Adv. Fooocus Input Parameters:

model

This parameter specifies the model to be used for sampling. It is a required input and determines the underlying AI model that will generate the images.

seed

The seed parameter is an integer value that initializes the random number generator. It ensures reproducibility of results. The default value is 0, with a minimum of 0 and a maximum of 0xffffffffffffffff.

steps

This integer parameter defines the number of sampling steps to be performed. More steps generally lead to higher quality images but increase computation time. The default value is 20, with a minimum of 1 and a maximum of 10000.

cfg

The cfg (Classifier-Free Guidance) parameter is a float value that controls the strength of the guidance. Higher values result in images that more closely follow the provided conditioning. The default value is 8.0, with a minimum of 0.0 and a maximum of 100.0, adjustable in steps of 0.1.

sampler_name

This parameter allows you to select the sampling algorithm to be used. It is a required input and offers various options from the comfy.samplers.KSampler.SAMPLERS list.

scheduler

The scheduler parameter specifies the scheduling strategy for the sampling process. It is a required input and offers various options from the comfy.samplers.KSampler.SCHEDULERS list.

positive

This parameter provides the positive conditioning for the sampling process. It is a required input and significantly influences the generated image's features.

negative

The negative parameter provides the negative conditioning, which helps in steering the sampling process away from undesired features. It is a required input.

latent_image

This parameter represents the latent image to be used as the starting point for the sampling process. It is a required input and serves as the initial state for image generation.

denoise

The denoise parameter is a float value that controls the amount of noise reduction applied during sampling. The default value is 1.0, with a minimum of 0.0 and a maximum of 1.0, adjustable in steps of 0.01.

sharpness

This optional float parameter allows you to adjust the sharpness of the generated image. The default value is 2.0, with a minimum of 0.0 and a maximum of 100.0, adjustable in steps of 0.01. Increasing the sharpness value enhances the clarity and detail of the output image.

KSampler Adv. Fooocus Output Parameters:

LATENT

The output of the Fooocus_KSamplerAdvanced node is a latent representation of the generated image. This latent output can be further processed or decoded into a final image. It encapsulates the detailed features and characteristics defined by the input parameters, including the sharpness adjustment.

KSampler Adv. Fooocus Usage Tips:

• Experiment with the sharpness parameter to find the optimal value for your specific image generation task. Higher values can enhance details, but may also introduce artifacts if set too high.
• Use the seed parameter to reproduce specific results, which is particularly useful when fine-tuning your settings.
• Adjust the steps parameter to balance between image quality and computation time. More steps generally yield better results but require more processing power.

KSampler Adv. Fooocus Common Errors and Solutions:

"Invalid model input"

• Explanation: This error occurs when the model parameter is not correctly specified or is incompatible with the node.
• Solution: Ensure that you provide a valid model that is compatible with the Fooocus_KSamplerAdvanced node.

"Seed value out of range"

• Explanation: The seed parameter value is outside the acceptable range.
• Solution: Verify that the seed value is within the range of 0 to 0xffffffffffffffff.

"Steps value out of range"

• Explanation: The steps parameter value is either too low or too high.
• Solution: Adjust the steps value to be within the range of 1 to 10000.

"Sharpness value out of range"

• Explanation: The sharpness parameter value is outside the acceptable range.
• Solution: Set the sharpness value within the range of 0.0 to 100.0.

"Missing required input"

• Explanation: One or more required input parameters are not provided.
• Solution: Ensure all required parameters (model, seed, steps, cfg, sampler_name, scheduler, positive, negative, latent_image) are specified.