Sorry, but I don't know what you need. There are two basic product layouts: 

1. Image fits whole container. Image must be cropped (columns layout)

2. Image is not cropped and fully visible (grid layout)

So, if you need full images, you must use Grid layout. Columns can't have full images as this destroy layout. It's possible only with paid customization. If you want to make customization by yourself, i can point you file names of both layouts

I know the geometry and I expect same understanding for you as well,  on the other hand, I didn't ask to change the size of the image but I just wanted to have full product image as it was fetched from the e-commerce website on my product slider.

You can't have, because geometry laws in this universe don't allow you to make all sizes of images to fit rectangle size without cropping of image. 

Actually, We want slider feature and we need the full image for slider we do not want any grid view. please suggest me how I can add full images in slider.

Actually I want to show full image of the product rather than the square thumbnail image of the product in product slider