So what about F-Stops? at DVinfo.net

John Alton Disciple · February 9th, 2006, 07:09 PM

I've read about the noise/no noise issue, the CCD resolution/lack of issue, various tests, comparisons etc. My concern is what's the exposure range. The DVX100 was said to just reach 7 F-stops (which is pretty respectable for a video camera). Modified with an Andromeda it's been said to come up to about 9 and a half. Does anyone have the numbers for the HVX?

Thanks

Chris Hurd · February 10th, 2006, 12:30 AM

The maximum aperture with the lens at full wide is f/1.6, and at full telephoto it's f/2.8. Now if someone who has the camera can report at what f/stop the iris closes, you'll have your answer. I would not expect much smaller than f/11 or f/16 or so due to the problem of diffraction, readily apparent in all one-third inch HD camcorders at such a small aperture.

Barry Green · February 10th, 2006, 02:19 AM

Quote:

Originally Posted by Chris Hurd

The maximum aperture with the lens at full wide is f/1.6, and at full tyelephoto it's f/2.8. Now if someone who has the camera can report at what f/stop the iris closes, you'll have your answer. I would not expect much smaller than f/11 or f/16 or so due to the problem of diffraction, readily apparent in all one-third inch HD camcorders at such a small aperture.

F/11 is the smallest iris you can register. Technically it will allow you to close to F/11+1/3, but you really shouldn't as diffraction gets pretty noticeable down there (well, in HD; it's fine in SD).

February 9th, 2006, 07:09 PM	#1
John Alton Disciple New Boot Join Date: Jan 2003 Location: El Paso TX Posts: 14	So what about F-Stops? I've read about the noise/no noise issue, the CCD resolution/lack of issue, various tests, comparisons etc. My concern is what's the exposure range. The DVX100 was said to just reach 7 F-stops (which is pretty respectable for a video camera). Modified with an Andromeda it's been said to come up to about 9 and a half. Does anyone have the numbers for the HVX? Thanks

February 10th, 2006, 12:30 AM	#2
Chris Hurd Obstreperous Rex Join Date: Jan 2001 Location: San Marcos, TX Posts: 27,366 Images: 513	The maximum aperture with the lens at full wide is f/1.6, and at full telephoto it's f/2.8. Now if someone who has the camera can report at what f/stop the iris closes, you'll have your answer. I would not expect much smaller than f/11 or f/16 or so due to the problem of diffraction, readily apparent in all one-third inch HD camcorders at such a small aperture. __________________ CH Search DV Info Net \| 20 years of DVi \| ...Tuesday is Soylent Green Day!