brass mounted Apalantic landscape lens fitted with Waterhouse stops F.8 6.5 inch f.l. c.1880 Brass mounted Apalantic landscape lens circa 1880
Lens barrel with iris diaphragm calibrated 1-5. Four elements 15/25/35/45 in five normal, five wide angled and four landscape combination. Emil Busch. Busch Combination Lens Aplanat Series I
Aplanat or simple landscape lens 12 inch f.l without a diaphragm in a brass mount. Lerebour & Secretan, c.1890. Aplanat or Simple Landscape Lens. circa 1890
Busch's portrait aplanat No.2 lens F.8 with 7 inch f.l. with a ring type iris diaphragm. c.1910. Busch's portrait aplanat No.2 lens circa 1910
Busch Wideangle Aplanat lens No 4. Series C f16 10in. Rotating aperture plate with f16,22, 32,45,64,88. Busch Wideangle Aplanat Lens No 4