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Voigtlander Collinear Lenses.
'I'm: Collineak Lens differs radically from the old style of Lenses and from the Lenses in common use to-day. It embodies a new principle — freedom from Astigmatism. It is the ^most perfect of modern anastigmats, representing Perfection of Type, Perfection of Physical Qualities, Perfection in the Manufacture.
The type of the Collinear is an ideal one. Not only does it embody all the corrections that a Lens of its kind should have, but it is planned and constructed on those lines which are considered the most desirable by Lens makers.
A Lens is anastigmatic when it will make a simultaneously sharp picture of vertical and horizontal lines crossing each other, or a perfectly sharp picture of concentric circles. This is the most difficult problem for the Lens maker, and in no lens is it so well solved as in the Collinear. The effect of anastigmatism is to make a picture sharp and brilliant, to give it snap and detail.
Collinear Lenses are rectilinear,' because thev are symmetrical : the front Lens exactly like the rear : in fact interchangeable.
The most suitable series of Objectives for Bioscopic Photographs.
ALL "URBAN'' BIOSCOPE CAMERAS are fitted with these admirable Lenses-ALL " URBAN " Fl LM SUBJECTS are procured thereby.
"THE QUALITY OF THE PHOTOGRAPH IS THE GUARANTEE FOR THE LENS."
PRICES.
No. 00— 22-inch equivalent focus F 5 -4 (as supplied with Model "B"
Camera) with Mount, Hack and Pinion Adjustment £3 15 0
No. 00 — 2:f-inch equivalent focus F 5'4 without Rack and Pinion
Adjustment 3 10 0
No. 1— 3Vinch „ „ „ „ „ „ „ 4 10 0
No. 00 — Scinch fitted with adjustable tube for interchangable mount as
supplied with Urban Model " D " and " Duplex " Cameras net. 4 4 0
No. 1. -3\ inch Ditto 550