Zeiss Standard Speeds, industry workhorses for years, have been used on some of the best looking feature films of the last 40 years.  Small size, good sharpness and contrast, and a large selection of focal lengths have kept these lenses relevant even today, adding a filmic quality to digital cameras.  They are often used as a slightly less sharp and less contrasty alternative to modern lenses.
Available Focal Lengths:
10mm, 12mm, 14mm, 16mm, 20mm, 24mm, 28mm, 32mm, 40mm, 50mm, 85mm, 100mm, 135mm, 180mm