Additional information about Industar-61 L/Z 50mm f2.8
1. Several 50mm Prime lenses comparison
2. Cooke Triplet, Tessar and Planar: E. Ludwig Meritar 50mm f/2.9, Industar-61 L/Z 50mm f/2.8 and Nikon Micro Nikkor 55mm f/3.5 non-Ai (PK-3).
Natali Stangrit's color palette
