I need to order posters for printing. How do I convert Mb to Mp to calculate if photo size big enough?
PPI, Pixels Per Inch is how you see the image on your computers monitor DPI is the number of dots per inch you see when you look at a photo in a newspapers (80 DPI or less), magazine or book (150 DPI or less and a photographic print (240 to 300 DPI) When you convert a RAW file to a JPEG, you have the option of setting the DPI to 300 (or any other number, 72 DPI being the most popular for posted image files that are to be viewed using a computer monitor) A 600 kb image file is far too small to make a print larger than about a 4×6 inch print. If I were planning on making posters, I would 1) shoot at my cameras highest resolution in RAW. I would then process the RAW file and save it as a TIFF file. A 14.5 mb RAW file, processed as a TIFF will result in a file that is 70 mb TIFF. A TIFF that size can easily be printed as a poster, but you have to start with a high resolution RAW file to be sure to have enough data to make such a large print I would send them a large TIFF file that is repre
