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Author
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Topic: Photo of the week 999 (December 16, 2023)
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heng44
Member Posts: 3703
From: Netherlands
Registered: Nov 2001
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posted 12-16-2023 03:32 AM
   
 Astronaut Wally Schirra smiles after the hatch of the Gemini 6 spacecraft was opened aboard the carrier USS Wasp, 58 years ago today. Schirra and Tom Stafford had just completed the historic rendezvous with Gemini 7. The picture was made from an NBC television monitor in New York. |
Axman
Member Posts: 296
From: Derbyshire UK
Registered: Mar 2023
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posted 12-16-2023 05:53 AM
That's a very nicely composed photograph. Can I ask, has this been digitally enhanced in any way?The reason I ask is because I took quite a few photographs of scenes from my TV back in the late 60s and early 70s and all them had unsubtle lines across them. They weren't particularly aesthetically marred by the lines, but they were definitely present. Of course an NBC television monitor and my TV screen will have different characteristics, and the same would probably be true of the camera. I used a Nikon FM with a 50mm lens and f/8 on a medium speed film (if I recall correctly). |
heng44
Member Posts: 3703
From: Netherlands
Registered: Nov 2001
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posted 12-16-2023 06:06 AM
I did not enhance it. It is a wirephoto that was published in newspapers at the time. |
GACspaceguy
Member Posts: 3011
From: Guyton, GA
Registered: Jan 2006
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posted 12-16-2023 07:24 AM
I took photos from the TV as a teen. The black bar is the refresh sweep for the analog TV at that time in history (I am sure there is a better more technical description). You work around that issue by using a smaller aperture setting and an exposure longer that 1/60 of a second. The sweep will go by and you will have a full exposed image. As long as the movement is limited on the screen it works well. |
Headshot
Member Posts: 1262
From: Vancouver, WA, USA
Registered: Feb 2012
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posted 12-16-2023 01:18 PM
I remember seeing that image on our television screen, although not as crisp as this picture.Great memories. Thanks Ed. |
ejectr
Member Posts: 1988
From: Killingly, CT
Registered: Mar 2002
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posted 12-16-2023 05:01 PM
The black bar is caused by having your shutter at or faster than the same sweep frequency of the horizontal sweep, which is 60 hz on an analog TV. You're seeing the horizontal retrace. If your shutter speed is set below this 60HZ speed, like at 30hz, you won't see this due to the persistence of the screen and the fact the screen paints twice in the time the shutter opens and closes. |
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