Airships past and present, together with chapters on the use of balloons in connection with meteorology, photography and the carrier pigeon . ats immediately over the spot which itis wished to photograph. Another objection is to be found inthe fact that this arrangement is very cumbersome from thepoint of view of those who have to do with the navigating ofthe balloon; it is not always easy to throw out ballast or let 304 AIRSHIPS PAST AND PEE SENT. down the guide-rope if a camera is on the floor almost beneathones feet. And from the point of view of the photographerhimself, the arrangement has
Airships past and present, together with chapters on the use of balloons in connection with meteorology, photography and the carrier pigeon . ats immediately over the spot which itis wished to photograph. Another objection is to be found inthe fact that this arrangement is very cumbersome from thepoint of view of those who have to do with the navigating ofthe balloon; it is not always easy to throw out ballast or let 304 AIRSHIPS PAST AND PEE SENT. down the guide-rope if a camera is on the floor almost beneathones feet. And from the point of view of the photographerhimself, the arrangement has little to commend itself; he hasto bend down over his camera in a very awkward position, andprobably ends by making his exposure at random without know-ing exactly in what direction the lens is pointing at the it is actually necessary that the^ plate should be horizontal atthe moment of exposure, the best plan is to mount a level on thecamera ; the floor of the car is very unlikely to be sufficientlysteady, if only for the very simple reason that it contains a |WS|f( ! I ebb - -njf l I 4mh£sk\ 1 <• PHI ?? -. Fig. 188.—Ducoms photographicapparatus. (From Pizzighellvs Handbook forPhotography, 1891.) Fig. 189.—Hagens method ofmounting the camera. constantly shifting load. This plan has therefore beenabandoned. Various arrangements have been suggested by which thecamera is mounted on the outside of the basket, and in thisway it is generally possible to make the exposure at a con-venient moment. The distance at which it must be mountedfrom the edge depends on the angle of the lens; no part of thebasket must come within the field of view. But this arrange-ment has the disadvantage that it is only possible to photographthe landscape on the one side of the balloon, and it may happenthat this is not precisely what is wanted, either owing to theposition of the sun or for some other reason. It is largely amatter of pros and cons, and if the ideal is unattainab
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Keywords: ., bookcentury1900, bookdecade1900, bookpubl, booksubjectaeronautics
