Am I missing this option or is there nothing I can do? I want to have about 100 different images in a gallery. But throughout these images there are about 35% of them that will not have a certain size available.
Can I disable sizes for certain images in the gallery??
you can do that only through the price list you need to organize your images base on the price list you need to assign them and assign the image size to you list.
Be sure to upload images big enough to generate all available sizes