I actually have a bit of a question regarding this. I've got this extremely high resolution Cammy image that I'm planning on using as part of the side art for my cabinet.

Warning - 1.6 megs if you click on it.
The image is 4096 x 5793
At 300 dpi that means that this image can only have a max size of 13.65" x 19.31"
When I click view it by "actual pixels" however in Photoshop on my 27" monitor with a max resolution of 2048x1152 pixels the image looks spectacular and measuring while scrolling up it's over 47" in size!
19 inches is far too small for a big sideart picture. I was hoping to print this out at around 40" in size. Will it come out ok at that size? I thought the resolution was high enough but I'm starting to have my doubts.