Procedures for Each Camera-Housing -Lens -Port Combination 

 1. Kodak Model 174: 



Kodak Model X-45: 



3. Ricoh Hi-Color 

 35mm camera: 



4. Nikon "F"' 

 6 inch dome: 



5. Nikon "F" 



5 inch dome: 



5B Nikon "F" 

 flat port: 



6. Nikonos: 



7. Nikon "F" 



8 inch dome: 



8. Nikon "F" 



8 inch dome: 



This camera has automatic exposure control, and is set 

 for sharp lens focus at approximately 7 feet in air. 

 The housing used had a flat Plexiglass port. The camera 

 was tested at 1 ft., Ik ft., 2 ft., 2% ft., 3 ft., 3% ft. 

 4 ft., and 5 ft. A Plus-one Diopter closeup lens was 

 also tested, in water, at the same footage distances. 



This camera has automatic exposure control; it also has 

 a closeup setting of 2 to 6 ft. All the tests were made 

 at this closeup setting. The housing used had a flat 

 port. The camera was tested at distances of 1 ft., 

 1% ft., 2 ft., 2% ft., 3% ft., 4 ft., and 5 ft. A Plus- 

 one Diopter closeup lens, in the water, was also tested 

 at the same footage. 



This camera has automatic exposure control. It also has 

 a focus setting of 3 ft. The tests were made at this 

 setting. The housing used had a flat port of glass. 

 The camera was tested at distances of 1 ft., 1% ft., 

 2 ft., 2% ft., 3 ft., 3% ft., 4 ft., and 5 ft. A Plus- 

 one Diopter closeup lens was also tested in water. 



Tested at F 5.6, 8, and 11 using a Plus-3 Diopter lens 

 in all tests at 2 ft. using 20mm, 24mm, 35mm, and 50mm 

 lenses. 



Same procedure as camera #4 with a Plus-3 Diopter close- 

 up lens in all tests. 



Same procedure as camera #4 (no closeup lens used) 



Tested with 35mm lens, at 2 ft. using F 5.6, 8, and 11. 

 Tested with 28mm UW corrected lens at 2 ft. using F 5.6, 

 8, and 11. Both lenses were focused at 2 ft. on the 

 lens-focus-scale, 21mm lens, with 3-inch dome port, and 

 5%-Plus Diopter closeup lens. 



Tested at 5, 6, 8, 11, with the following lenses: 20mm, 

 24mm, 35mm; camera set at 2 ft. distance. 



Tested at 5.6, 

 set at 2 ft. 



8, 11. With the 20mm lens only. Camera 



RESULTS 



Figures 1-10 show the resulting photographs taken with the various cameras, 

 lenses, housings, F-stops, and distances. These test patterns are only repre- 

 sentative samples and are included for purposes of general comparison. The 

 original prints must be seen to fully appreciate the real qualitative differences, 

 They can be obtained on request from the author. 



VI-299 



