the content of Ultron 35/1.7 > http://www.pbase.com/kkawakami/cv_ultron_35mm_f17_manual the content of Nokton 50/1.5 > http://www.pbase.com/kkawakami/cv_nokton_50mm_f15_manual the content of Color-Heliar 75/2.5 > http://www.pbase.com/kkawakami/cv_color_heliar_75mm_f25_manual