What's the best file type for photos to be brought into InDesign?
I'm building a newsletter in InDesign and have some company photos of people's faces. What file type should I use to place them in my InDesign file?
It doesn't really matter too much, providing your effective pixels exceed your desired output. If you want it for printing at 300ppi, as long as the image isn't stretched beyond that, you will be fine. In the end, InDesign has to resize/reinterpret your image anyway to match your output settings.
You can monitor the effective pixels in the info section at the bottom of the links panel.