When I look at the image size it says 72 or 173 dpi. Can I get higher resolution images?
A. Yes. The dpi specification only pertains to how the data is rastered on the display screen or output by the printer. The actual resolution of the image is determined by the size of the camera array, the magnification of the microscope and the size of the camera pixels. The array dimensions and pixel size of the camera are fixed. The default display of the images from the SEM is a 7 inch by 7 inch, 72 dpi image. The default for images from the TEM is a 6 inch by 7 inch, 173 dpi image. You can display or print an image with higher dpi by reducing its size using Photoshop. In the “Image” menu, choose “Image Size”. Uncheck “Resample” and type in the dpi you want. Click OK. For the SEM if you typed in 300 dpi, you will now have a 1.7 inch by 1.7 inch 300 dpi image. For the TEM the new image will be 3 inches by 4 inches. This can be printed as is, or if you want a larger print size, you can choose an enlargement in the Page Set Up dialog box. From Photoshop, you can print a 200% enlargeme
