45, COBNHILL, E.G., AND 122, REGENT STEEET, W., LONDON. 



527 



182 



PORTABLE SYMMETRICAL LENSES. 

 For Landscapes and Architecture. 



Since the introduction of Photography perhaps no lens for Landscapes and 

 Architectural purposes has had so great a share of popularity as the Symmetricals. 

 They are universally used by many of our most eminent photographers. This is, 

 doubtless, attributable to their extraordinary definition and flatness of field, as well 

 as to the exceedingly portable form in which they are constructed, the series fitting 

 the same flange. 



3183 



UNIFORM RATIO OF STOPS. 



INTERMEDIATE STOPS SUPPLIED IF REQUIRED. 



These Lenses are supplied accurately paired for Stereo, purposes. 



3184 RAPID SYMMETRICAL LENSES. 



For Groups, Views, Interiors, and every kind of Outdoor Photography. 



The Rapid Symmetricals, being aplanatic, work with full aperture, and are, 

 perhaps, the best and most useful Lenses an Amateur or Professional Photographer 

 can possess for general outdoor purposes. 



3185 



UNIFORM RATIO OF STOPS. 



INTERMEDIATE STOPS SUPPLIED IF REQUIRED. 



*0 signifies the ratio of the Lenses to their foci. 



Ten per Cent Discount on Ross' Lenses when Remittance accompanies Order. 

 Lenses by any other Makers supplied at their List Prices. 



