I want to view large images that I transfer to my iPhone from my computer. Obviously I cannot view them completely at a 1:1 ratio, but rather I want to be able to zoom in to the 1:1 ratio. The only application that I have found is Full-Res, which claims to do what I am looking for, but falls far short of giving you a full size image.
If it helps, I specifically want to view JPG and PNG images that are between 5,000x5,000 and 10,000x10,000 at 72dpi. I have no problem opening them up in the default Photos application, but using the "pinch and zoom" technique does not zoom very far at all.
Similar question for PC: Here