| TV cameras 14:26 - Aug 9 with 1357 views | Nthsuffolkblue |
I would have thought that with modern technological developments it would be possible to produce smaller, lighter cameras that are just as good. Just thinking this having seen the camera person handling the one on the Hundred footage.
Unsure whether to go with football for this. Will move if it offends someone for some reason but thought it is relevant. |  |
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| TV cameras on 14:35 - Aug 9 with 1256 views | longtimefan |
It’s the lens that takes up most of the room in broadcast quality cameras. They have to provide incredible degrees of optical magnification and work well in relatively poor lighting conditions. The size is therefore mainly governed by physics rather than the electronic processing units which have continually shrunk. |  | | |
| TV cameras on 14:38 - Aug 9 with 1241 views | greyhound |
You would be surprised how advanced a lot of the tech is. The cameras behind the goals are controlled by a bloke in a van with an xbox controller. I do some broadcast camera work and the units are tiny compared to ones of old but they still have quite significant weight to them. Image stabilisation does a lot of heavy lifting | | | |
| TV cameras on 14:50 - Aug 9 with 1158 views | Nthsuffolkblue |
| TV cameras on 14:35 - Aug 9 by longtimefan |
It’s the lens that takes up most of the room in broadcast quality cameras. They have to provide incredible degrees of optical magnification and work well in relatively poor lighting conditions. The size is therefore mainly governed by physics rather than the electronic processing units which have continually shrunk. |
Thanks for explaining that. I still think the weight appears excessive. My son suggested that heavy helps with stability which makes some sense. I guess the lenses require a certain amount of weight as well as size. Also, if the lens is heavy, it will want a certain amount of weight further back to help with balance. However, in my mind that could be achieved with less weight behind the operator moving the point of balance closer to the person's own centre of gravity. | |
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| TV cameras on 16:06 - Aug 9 with 940 views | SuffolkPunchFC |
I'm not sure what lenses you were looking at, but there are many challenges for OB Field lenses (these are the really big ones that look like small coffins).
They need incredibly high magnification - x80 to x125 is not unusual in sporting events. That requires numerous lens elements (10-20 or more individual high grade optical glass lenses would not be unusual), all on a high precision mechanical shuttle that moves the elements forwards and backward for precision zoom and focus.
The glass lenses also need to be very large too for low light performance. You still can't beat large glass surfaces for collecting as much light as possible. Modern high gain camera CCDs plus image processing helps, but still introduces more grain than just relying on area of available glass.
All of this leads to large, and very heavy lenses. I've mounted a few of these so can speak from personal experience. | | | |
| TV cameras on 06:33 - Aug 10 with 618 views | lurcher |
| TV cameras on 14:50 - Aug 9 by Nthsuffolkblue |
Thanks for explaining that. I still think the weight appears excessive. My son suggested that heavy helps with stability which makes some sense. I guess the lenses require a certain amount of weight as well as size. Also, if the lens is heavy, it will want a certain amount of weight further back to help with balance. However, in my mind that could be achieved with less weight behind the operator moving the point of balance closer to the person's own centre of gravity. |
There is no substitute for letting the lens do the work. That means a long lens with a big diameter, to handle telephoto zoom requirements and low light conditions. The camera man also needs to watch a screen rather than use a viewfinder. Which puts everything in front of him. |  | | |
| TV cameras on 07:22 - Aug 10 with 516 views | NthQldITFC |
| TV cameras on 16:06 - Aug 9 by SuffolkPunchFC |
I'm not sure what lenses you were looking at, but there are many challenges for OB Field lenses (these are the really big ones that look like small coffins).
They need incredibly high magnification - x80 to x125 is not unusual in sporting events. That requires numerous lens elements (10-20 or more individual high grade optical glass lenses would not be unusual), all on a high precision mechanical shuttle that moves the elements forwards and backward for precision zoom and focus.
The glass lenses also need to be very large too for low light performance. You still can't beat large glass surfaces for collecting as much light as possible. Modern high gain camera CCDs plus image processing helps, but still introduces more grain than just relying on area of available glass.
All of this leads to large, and very heavy lenses. I've mounted a few of these so can speak from personal experience. |
' I've mounted a few of these so can speak from personal experience. '
Whatever gets you off, brah!  |  |
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| TV cameras on 08:56 - Aug 10 with 406 views | Cheltenham_Blue |
| TV cameras on 16:06 - Aug 9 by SuffolkPunchFC |
I'm not sure what lenses you were looking at, but there are many challenges for OB Field lenses (these are the really big ones that look like small coffins).
They need incredibly high magnification - x80 to x125 is not unusual in sporting events. That requires numerous lens elements (10-20 or more individual high grade optical glass lenses would not be unusual), all on a high precision mechanical shuttle that moves the elements forwards and backward for precision zoom and focus.
The glass lenses also need to be very large too for low light performance. You still can't beat large glass surfaces for collecting as much light as possible. Modern high gain camera CCDs plus image processing helps, but still introduces more grain than just relying on area of available glass.
All of this leads to large, and very heavy lenses. I've mounted a few of these so can speak from personal experience. |
"still introduces more grain than just relying on area of available glass."
Grain? You mean Noise, this ain't no wet process. [Post edited 10 Aug 8:57]
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