AMATEUR PHOTOGRAPHY. 



163 



Fig. 2. 



draw a pencil line down the center of 

 screen; focus camera, placing picture on Yz 

 of screen; cap lens and insert plateholder; 

 draw slide and substitute slide made as fol- 

 lows: Take a piece of hard rubber or stiff 

 cardboard, same size and thickness of slide; 

 cut space in one end a little less than half 



each slide and simply reversing slide after 

 each exposure. 



F>g- 3. Fig. 4. 



size of plate, as shown in Fig. 1; after plac- 

 ing in substitute slide uncap lens and ex- 

 pose; when exposed cap lens, withdraw 

 slide and insert original slide. 



To expose other half of plate focus on 

 other half of screen and use slide with open- 

 ing cut in opposite side, as shown in Fig. 2. 



Four exposures may be made on one 

 plate by using slides made as shown in 

 Figs. 3 and 4, making 2 exposures with 



PHOTOGRAPHING IN THE MOUNTAINS. 



I am only a snap-shot fiend, and carry 

 my camera with me in the mountains all 

 summer, when on prospecting and explor- 

 ing expeditions in the remote, wild por- 

 tions of Idaho, where grand scenery is the 

 rule and not the exception. I have decided 

 that for mountain work of all kinds to be 

 a success a camera should have a lens like 

 a telescope, fully as powerful as the best 

 field glasses. It would give a detail one 

 cannot obtain otherwise. Would also save 

 one many a weary climb or ride to get 

 near enough for a desirable shot at some 

 grand old peak, or into some almost bot- 

 tomless canyon. It would also enable us to 

 get good views of game, while those made 

 with the ordinary camera are worthless. 



For mountain work I would favor a 

 5x7, using roll films. They can be carried 

 all summer on a pack horse without dan- 

 ger of breaking or scratching. I use a sole- 

 leather case, with shoulder straps like those 

 of a knapsack. This gives me free use of 

 my arms, and I scarcely notice the weight 

 of the camera when climbing the hills or 

 riding. Have carried my camera over 800 

 miles this season, on foot and on horse- 

 back, without the least fatigue. The most 

 difficult problem for me is to take a pic- 

 ture that will show the extreme depth of a 

 canyon. The bottom always seems to come 

 up on a level in the top walls. Why? 

 M, W. Miner, Banner, Idaho. 



