SCIENCE- G OSS/P. 



349 



PHOTOGRAPH'S l'oh' BEGINNERS. 

 By B. Foulkes-Winks, M.R.P.S. 



{Continued from page 310.) 



Section I. Cameras (continued). 



Automatic Changing Cameras.— Our nexl 

 illustration is representative of a very large clas^ of 

 hand-cameras, all more or less alike, but varying in 

 price according to finish and quality of lens and 

 shutters. The "Midg" (see ante, p. 277) is a very 

 cheap camera of this type ; it is fitted with single 

 lens, has a time and instantaneous shutter, and two 

 Brilliant finders ; capacity twelve J-plates and 

 register for number of exposed plates. This camera 

 is manufactured by Messrs. Butcher & Son, of 

 Black heath, the retail price being a guinea. It is 

 also made in three other qualities, all fitted with 

 rapid rectilinear lenses, ranging from £2 10s. to 

 d 4s.. according to quality of lens and general 

 finish. 



The "Salex" hand-camera is another .type of 

 automatic changing hand-camera. It is well made, 

 and has a very good rapid rectilinear lens fitted 

 with Bausch & Lomb " Unicum " time and instan- 

 taneous shutter, iris diaphragms, rack focussing, 



1'' i « ; . 1. The "Salex." 



and two special Brilliant real image finders. This 

 pattern is manufactured by the City Sale and Ex- 

 change Company, price £5 5s. No. 2 "Salex" is 

 fitted with " Cooke " lens working at (5'3, and has 

 rising front each way. Price £10 10s. 



The " Bullard " camera is quite a new system of 

 automatic changing, and is of American manufac- 

 t urc. It is made only for 5 x 4 plates, and has a 



BULLARU." 



lens ami shutter, is made to fold, and when closed 

 up forms a neat leather-covered box. The lens 

 is of the rapid rectilinear type, and the shutter 

 is a Bausch & Lomb time and instantaneous, 



with pneumatic release. The camera is fitted with 

 a reversing finder, thus enabling it to be used 

 vertically or horizontally. J'rice £ 1 L5s, 



The "Telia " is an automatic changing flat film 

 camera, and is of an exceedingly neat appearance. 

 It is very small and compact. The changing is One 

 of the most ingenious inventions that we have seen 

 applied to cameras. The films are inserted in the 

 chamber at the back of the camera in packets of 

 twenty-five, the film chambers being made to hold 

 any number up to fifty. There is a small cellu- 

 loid separator between every film. Each serves to 

 separate a film from the rest as it becomes the 

 front one. This film is then isolated by means of 

 a septum that is automatically inserted between 

 the first film and the remainder, thus preventing 



capacity Of 18 plates of that size. The changing is 

 very rapid and sure, and each plate is registered 

 as it is exposed. The front of the camera, carrying; 



I'li;. 3. The "Tella." 



the light acting upon any but the one film exposed 

 in front of the septum. After this rilm has 

 been exposed, it is passed away into a chamber for 

 exposed films, and the number registered, whilst by 

 the same action another film is brought into posi- 

 tion for exposing. In connection with this changing 

 system, there is a very pretty device which shows 

 the operator whenever there is a film ready for 

 exposure. The films may be purchased in packets 

 of twenty-five, and the parcel inserted bodily. 

 They may be also purchased in packets of twelve 

 of any manfacture. in which case they are inserted 

 into the camera one at a time, and a small separator 

 placed between each. Thus it will be seen that 

 any make of film may be used. 



The shutter is a very efficient one. and works 

 in the diaphragm slot of the lens. It is a 

 pneumatic regulation shutter, with a range of speed 

 from T ~ to | a second and time. The finders are 

 of the "Real Image Brilliant" type, and are very 

 carefully adjusted. 



The ^-plate "Telia." fitted with an ordinary 

 F. 8 rapid rectilinear lens, costs 67 17s. (id. The 

 No. 3 "Telia," J -plate size, fitted with the " Cooke " 

 anastigmat lens, working at F. (>3, and having 

 rising front for both vertical and horizontal 

 pictures, is priced ill L4s. The No. I "Telia" 

 for 5 x 4 films, and fitted with li-inch Cooke lens, 

 is £19 L9s. All these instruments are beautifully 

 finished, and for tlat film cameras are undoubtedly 

 the best mi the market. 



The"Frena" is another form of hand-camera 

 for use with cut films. The films are inserted in the 

 camera in packets of twenty, the capacity of each 



