I'm very new at Photoshop. I have a photograph that I'm working with and a vendor is needing this file to be in, at a minimum, 350 DPI. I'm not entirely sure how to obtain the DPI, although I went to FIle > File Info > Camera Data tab and if understand this correctly, the file is 300 DPI. Here is a screenshot from photoshop:
So my questions are:
1. Is this the correct way to determine the DPI of an image file?
2. Can I convert the image to 350 DPI?
3. If so, how would I go about converting it to 350 DPI?