Otto R. Croy

1902

• Retouching: corrective techniques in photography
• The photographic portrait
• Das Contax-Buch
• Camera copying and reproduction
• Creative photography
• Croy's camera trickery
• Design by photography
• Photos helfen zeichnen
• Retouching
• The complete art of printing and enlarging
• Bild-lehrbuch der fotografie
• Camera close up