The Photography of Aquatic Animals in Their Natural Environment
The Photography of Aquatic Animals in Their Natural Environment
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In our eReader you can find the full English version of the book. Read The Photography of Aquatic Animals in Their Natural Environment Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book The Photography of Aquatic Animals in Their Natural Environment
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At the expiration of the time agreed upon the assistant signaled and the photographer closed the shutter. When the weather was good and the sun shining an exposure of ten minutes was necessary with a small diaphragm at a depth of 5 meters. Boutan estimated that at a depth of 10 meters this exposure would need to be more than doubled.
54 BULLETIN OF THE BUREAU OF FISHERIES.
-V BOUTAX'S SECOND APPARATUS (1896).
This apparatus (fig. 4) consisted of a metal camera, not inclosed in a box, but intend...ed to be immersed directly in sea water. The sea water could enter and fill the interior of the camera so that it bathed both the front and back faces of the lens as well as the plates. The latter were contained in a holder which could be attached to the camera after it was submerged. Thus the plates could be changed under water without any risk of fogging them. Sea water was found to have little effect on the plates unless its action was prolonged, and this effect could be wholly prevented by using plates that had been varnished.
What to read after The Photography of Aquatic Animals in Their Natural Environment?
You can find similar books in the "Read Also" column, or choose other free books by Jacob Ellsworth Reighard to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
At the expiration of the time agreed upon the assistant signaled and the photographer closed the shutter. When the weather was good and the sun shining an exposure of ten minutes was necessary with a small diaphragm at a depth of 5 meters. Boutan estimated that at a depth of 10 meters this exposure would need to be more than doubled.
54 BULLETIN OF THE BUREAU OF FISHERIES.
-V BOUTAX'S SECOND APPARATUS (1896).
This apparatus (fig. 4) consisted of a metal camera, not inclosed in a box, but intend...ed to be immersed directly in sea water. The sea water could enter and fill the interior of the camera so that it bathed both the front and back faces of the lens as well as the plates. The latter were contained in a holder which could be attached to the camera after it was submerged. Thus the plates could be changed under water without any risk of fogging them. Sea water was found to have little effect on the plates unless its action was prolonged, and this effect could be wholly prevented by using plates that had been varnished.
What to read after The Photography of Aquatic Animals in Their Natural Environment?
You can find similar books in the "Read Also" column, or choose other free books by Jacob Ellsworth Reighard to read onlineMoreLess
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