leo.roos:
a7 with Pentax bellows and W. Watson and Sons' Holostigmat series I, triple convertible lens (6,5'', f/6.5); ca 1900
leo.roos:
a7 with Pentax bellows and W.Watson and Sons' Holostigmat series I, triple convertible lens (6,5'', f/6.5); ca 1900 _ 2
leo.roos:
a7 with Pentax bellows and W.Watson and Sons' Holostigmat series I, triple convertible lens (6,5'', f/6.5); ca 1900 _ 3