If using PPT 2003, go to the Insert menu and select "Picture > From File". If using PPT 2007, click on the Insert tab at the top and then click on the “Picture” button. The Insert Picture dialog box will now appear. Use this dialog box to navigate to where your picture files are stored. Select the picture file you want to insert by clicking on it once and then click on the "Insert" button. For the best quality image, insert the pictures into PPT and then DO NOT enlarge them!
If you need to adjust the size of the picture, hold down the shift key on your keyboard and then click and drag with your mouse on one of the corners of the picture in order to scale it proportionally in height and width.
Do not allow inserted pictures to hang over the edge of the poster or they will be cropped off. Use the picture cropping tool or scale the image down proportionally.
Pictures from web sites are frequently low resolution, 72 dpi images. If used on a poster they will be fuzzy looking. Pictures for use on a poster need to be high resolution and should be scanned at 150 dpi at 100% of the final size they will be used at on the poster. For example, a picture that will be 10” wide on your final poster should have 1500 pixels in the width.
If designing you poster at half size (ie: 18" x 30" for a 36" x 60" poster) then scan at 300 dpi. Always save the image as a high quality JPEG file.
Do not enlarge pictures once they are inserted into PowerPoint. If the image will be used larger in the poster, it should be enlarged when scanned by scanning the original at a higher magnification or at a higher resolution to make up for the size difference.
If you're not sure how an image will look like when printed full size on your poster, click on it and then zoom in 100% to get a good look at it. (Zoom in 200% if designing your poster at half size.) If it is fuzzy looking on your monitor then it will be fuzzy looking on your poster.