studios not giving what the got from the camera, they import to the computer and make little alteration and give to you.
if you have a good phone with a camera, you can just get shots from a white or solid background and remove bg from photoshop.
the final output has to come as JPG format i think
In my case, the photographer just copied the RAW image from his memory card to my pen drive. So I am sure he did not touch the photo. I came home and used the USCIS photo tool to resize it. That's all I did.
If you want the photo unedited, you just have to say so and the photographer will give you the image without any edits.

