Digital Photo Printing

• causes a loss of image information or ...
• deteriorates the image quality in some way.

• The lens is imperfect and likely has some chromatic abberation
• The sensor adds noise and has some limit to depth (14-bit for the Canon 40D)
• The Bayer Filter for color sub-divides the color density by 2(G) or 3(RB)
• The optical anti-aliasing (blurr) filter smears the optical image
• The sensor adds noise and has some limit to depth (14-bit for the Canon 40D)
• The JPEG format is only 8-bit and uses lossy compression
• RAW data must be demosaiced to approximate the original pixel RGB
• Color-space (Gamut) has limits and sensor colors are not perfectly accurate
• Auto white-balance is imperfect even though a grey-card can help
• RGB must be converted to CMYK for the printer inks
• Even with color print calibration, photo print color errors still exist
• CMYK printer inks also have a limited color-space
• 1200dpi printers cannot reproduce pixels at better than 400dpi
• Human visual perception has limits as well.