Forum: Photography


Subject: A Professional Opinion is sought ...please :]

Tedz opened this issue on Mar 03, 2005 ยท 35 posts


coolj001 posted Fri, 04 March 2005 at 1:15 AM

Dear HC....Is this what you are talking about? It just so happends that last night I was reading through some back issues of my photo mags, and came across the following article in the Oct. 03' Issue of my Photo Graphic Mag. Keep in mind this is mostly a film camera mag, and the following article typically talks of film cameras, not digital, but i think the tips on exposures are relevant to both types of cameras. The article (by the mag. Editor) is is called "10 low-light photo tips, and the following secion I'm going to copy to this forum is part/tip #8 of the mentioned article; TV Pictures..So here it is word-for-word: "Photographing images on a TV screen is low-light work, with exposures somewhere in the neighborgood of 1/8 second at f/4 on ISO 100 film. It's wise to use a camera support, and to bracket exposures the first time you do it (once you get your photos back, you'll know the right TV exposure for that particular TV for future shots.) A few considerations: First, make sure the camera is square-on to the screen if you don't want "keystoning." Second, turn off all lights in the room, so they don't reflect in the screen-you're shooting the light emitted by the TV screen (watch out for window glare in daytime, too). Third, TV images are produced by scanning. It takes a little time for the TV to scan the entire image onto the screen. If you shoot at too fast a shutter speed, you'll record only a portion of the TV image. With leaf-shutter cameras, you must shoot at 1/30 or longer, with focal-plane shutters, you mighit have to go as slow as 1/8 to get an entire image. Finally, TV images are not high-resolution from a still-photography standpoint-so your photos of them aren't going to be high res, either. I realize this talks of film..but I think the same principles apply to digi too." I have experiemented just a bit with TV photographs. They are not bullsh--ing in this article....it is true, and I learned why a few pics I took turned out as they did. Too fast a shutter speed won't capture the entire screen cuz of that scan thing...there's a balance. I only got half a screen at higher shutter speeds. To slow resulted in tripped out bands or whatever, but the right speed/combo looked cool. If only I could remember those setting I used..I would let you know...but might not be relevent considering my lighting conditions in the room most likeely will vary from those of yours....Prob. the above article is acurate. If not I might have to write a letter of complaint to the editor. The cool thing is...With digi it is faster to figure out the correct exposure since the digi photgrapher has the advantage of instant review... Hope this helps...even if it is not relevant to what you have in mind...at least i hope you find it interesting. -Peace/Jeff :-)