DJ-Catalog2 ver. 3.7.2 has brought the support for Default images, displayed when, for example, the product does not have a real image assigned. You can choose different default images for products, categories, and producers, and of course, you can choose not to use default images at all.
To select a default image, please open the "Image Processing" tab in the DJ-Catalog2 configuration and select an image for the "Default image" parameter for the desired type of content.
Result