This collectable antique Busch’s Portrait Aplanat No3 has a focal length of 11 inches and a maximum aperture f6. It was made around 1904 for large format wooden cameras.
The lens covers 7X5 inches at full aperture and 9X7 inches at smaller apertures. It also has an angle of 65 degrees and a covering circle of 13.5 with the smallest aperture.
Cosmetic: Lightly worn. No dents or damage,
Optical: Optics are excellent. Free from scratches, debris and fungus.
Mechanical: Aperture control is smooth.
Dust/Haze: A small amount of haze, which is typical for a lens of this age.
Graded: Excellent Plus
(Signs of light use, but not misuse. )