Opening a large image from Acrobat at full size

Hi, @Katherine311427449g6j, this is a hard one to answer for many reasons, partly because of the resolution of the image AND/OR that there are very few people out there who have the same preferences on any given program. 

For example, you can set a document to open at full screen (whatever the resolution of that screen is), but someone is very likely to have THEIR Acrobat set to never open at full screen. The reverse of this is if you have a low-resolution image (a small image), you only want that image to open to its maximum resolution, but if someone has their Acrobat set to open at full-screen size, your image will open up looking fuzzy and out of focus.

However, just to make sure you're not sending out overly large images, it's best to send out documents with the resolution set for that document. Generally, if you want the minimum high resolution for an image (being professionally printed), you want to set the resolution at 300 dpi. Thus, an image that is (say) 7" across will be 2100 pixels wide (300 x 7). Any pixels over that amount will be an unnecessary storage size on the final document. If the document is going only to be viewed on a screen or maybe printed from an inkjet printer, it is about 180 dpi. Thus, that same image should be set at 1,260 pixels wide. That is 40% smaller. To add to this numbers game, let's say the original 2100 pixels-wide image was 2 MB in storage size. That same image set at 180 dpi would be 1.2 MB in storage size — almost half, and the resultant PDF would also be 40% smaller in size.

I know I've thrown a lot at you here, but in short, the answer is: no. Hopefully, you have a better understanding of why.