Picturebox Using Large Amount Of Memory

I'm loading an image, then getting size and such info from it, and loading the image into a picture box. Now it works and all, but I noticed it uses a large amount of memory. I'm doing: img = Image.FromFile(file)Where I load the image, 'file' being just a string containing path to an image on the hd. After that, I get the size and frame count (if any), and load it into a picture box: The image I've been testing with, is a 6600x5100 3.5MB JPEG, which can be downloaded from url...Watching task manager, when the app loads the image, it takes up about 104MB of memory. I've tried doing img.Dispose after the above line, but it brings up an error. If I put a button on the form with img.Dispose in it, and click it after app has loaded, it drops down to about 6MB of memory used. Loading the image directly into the picture box using .Load or .LoadAsync, after disposing img beforehand, still ends up with a huge amount of memory used.

So I'm wondering if theres a way to check if the picture box has fully loaded the img, so then I can Dispose the img and free up the memory. Or maybe a better way all together of loading an image into a picture box, and/or getting size & frame count, without having to use up that amount of memory before freeing.