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Capturing TV shots with Nikon D70
I want to take pics of menu displays (from DVD player or digital receiver)
on my TV using my Nikon D70. Not having too much success so far. Can anyone advise with regard to correct settings? Based in UK, by the way. Video capture hardware will give substantially better results To get half decent images of a TV screen with a digital or film camera you want to use a longish time exposure and if possible at a multiple of the 50Hz frame rate (US 60HZ). To get a complete image you need at least a 40ms or 1/25s exposure, but a 1/5s exposure will look better provided the image is static. A tripod is essential for good results. Whenever there is a partial scan overlap some parts will be brighter - this is better disguised in a longer exposure. LCD screens are slower to respond somewhat more forgiving. In a moving TV image it is always a difficult compromise between motion blur and scan artefacts. Frame grabbers are very much better for this. Regards, Martin Brown |
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Capturing TV shots with Nikon D70
|||newspam...wrote:
To get half decent images of a TV screen with a digital or film camera you want to use a longish time exposure and if possible at a multiple of the 50Hz frame rate (US 60HZ). To get a complete image you need at least a 40ms or 1/25s exposure, but a 1/5s exposure will look better provided the image is static. A tripod is essential for good results. I don't know about PAL in the UK, but with NTSC in the US, the frame rate is 30Hz. Two half-frames are interlaced each second (one with the odd lines, one with the even). An exposure at 1/60th will get a frame that has half the lines blank. I don't know off my head how this might have changed with HDTV. Austin |
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