PHOTOGRAPHIC APPARATUS, 

 CHEMICALS, &c. 



MANUFACTURED AND SOLD BY 



THOMAS & RICHARD WILLATS, 



INSTRUMENT MAKERS, 

 98, CHEAP 3 IDE, LONDON. 



Willats's Improved Photographic Camera, with Best 

 Achromatic Lens 1 in. diameter, mounted in Brass 

 Front, with variable diaphragm, fine screw adjustment 

 Frame, with ground glass disc, and folding shutters, 

 for obtaining the focus, shifting frame adapted for 

 taking three various sized pictures, either by the 

 Daguerreotype or Calotype processes 3 10 



Ditto Ditto with compound set of achro- 

 matic Lens 660 



This apparatus has the ad vantage of serving with all sorts 

 of object glasses, whether simple or compound, and 

 for all sizes of plates : its construction is very simple, 

 and not likely to get out of order. 



" PHOTOGRAPHY. A Camera on an improved principle, for taking photo* 

 graphic portraits and views, has been invented by Mr. Willats, 98, 

 Clieapside, which, upon examination, will be found much superior to 

 that in ordinary nse. We have heard many complaints of the common 

 camera, the insufficiencies of which we think Mr. U illats is in a fair 

 way to remedy. The camera invented by him is of superior value, 

 inasmuch as it can be adjusted with much greater facility and cer- 

 tainty ; and so obviates, in a great degree, the trouble often occasioned 

 by the old instrument. We have examined some of the pictures 

 executed by means of the improved camera, and find them most 

 perfect, even to the minutest detail." Art Union, August, 1844. 



