Core Viewpoint - The article discusses a method to solve the issue of aspect ratio control in images generated by Nano Banana, allowing users to modify existing images to fit desired proportions [2][4][12]. Group 1: Problem Identification - Users of Nano Banana face two main issues: low resolution of generated images and uncontrollable aspect ratios, making it difficult to use images in production [2][4]. - The output image's aspect ratio is determined by one of the input images, leading to inconsistency when multiple images are used [4][12]. Group 2: Proposed Solution - The solution involves using a reference image to control the aspect ratio of the generated images, allowing for modifications to both new and existing images [4][8]. - Users need two images: the original generated image and a reference image that defines the desired aspect ratio [6][16]. Group 3: Implementation Steps - The process requires inputting a specific prompt to instruct Nano Banana to redraw the content of the original image onto the reference image while maintaining the aspect ratio [13][15]. - The order of images is crucial: the image to be modified should be first, followed by the reference image to avoid errors [16]. Group 4: Additional Insights - The article mentions that using the Gemini2.5 Pro model in the Gemini APP yields better results compared to AI Studio when calling Nano Banana [15]. - A link is provided for users to download various aspect ratio templates for convenience [18].