I am working with a TIFF image (pixel type: uint8 (rgb)), and the pixel size was set at 169.333 um. After reading some posts and answers, I know this is wrong. However, I cannot seem to figure out what it should be set to. I cannot get the cell detection to work and my resolution is atrocious, I believe due to this. If anyone knows how to figure out what the true pixel size is, I would really appreciate the help!