[問題] 如何用dv影烟花?? @ 照相館

山王 · 10-01-08, 01:22 PM

看到youtube的短片中的煙花與實景大有差別, 從短片中的煙花多是白色的暴光, 有時是一整片的紅色或整片的綠色. 我不懂怎樣來講, 總之就是與實景大不相同. 但在電視新聞中所影到的煙花就真的與實景很相似, 影到煙花同時有不同的彩色和明暗, 我都不知他們是怎樣可以影到此種與實景很相同的影片或相片. 敬請各位討論給予意見, 多謝.

在youtube找到的影片
http://hk.youtube.com/watch/v/aESV4p73PiI

無記的影片
http://www.youtube.com/watch?v=TEDBGYtc7IE

其中白平衡、快門應該點set先好?

Designer · 10-01-08, 01:50 PM

http://www.edgewise-media.com/15qutitovifi.html

15 Quick Tips to Videotaping Fireworks

Shooting great firework footage is more than pointing the camera into the sky. The less light you have, the harder it is to focus or capture an image that isn't underexposed or overly grainy. Throw in a fireworks scene that changes from dark to light within nanoseconds, and your camera will need a lot of help from its human counterpart. Let's start with the gear, then go to the technical, setup and finally the techniques.

1 - Gear
Use a tripod, but set the drag loose to pan and swivel. A 3-chip cam captures images best, and HD is awesome, but, with good shooting techniques, any camcorder can capture the show,

2 - The Camera's Eye
Never shoot with auto focus or exposure. In the dark, the auto iris opens wide, searching for light. When the firework flashes, the shot is blown out before the iris can close. When the sky goes dark, your iris opens again, searching. Auto focus is also in constant motion, attempting to adjust.

3 - No Gain, No Grain
Practice before the event. Test your image with your iris on its smallest aperture (around f8 or f11). You might think you should open wide to get in more light, but the images wash out with bright fireworks. Try an ND filter or circular polarizer, too. If you "gain" your image from zero to 9db or 18db, your video becomes grainy, which flattens the fireworks images and makes darker areas look reddish, not black.

4 - Get Focused
Landscape or Fireworks settings keep the camera from getting nutty, but manual gives you better control. Set your focus on infinity, if you have it. While it's still light, focus on a roof, tree or pole that's about where you think the fireworks might land.

5 - Staging the Scene
Shoot people and fireworks separately. Don't shoot a burst of fireworks, then the people... then the fireworks... you will constantly have to reset your iris and focus, which is difficult at night. Shoot people first, when you still have some natural light. A twilight sky makes a beautiful beginning, especially if you use that polarizer.

6 - Low and Wide
Get in close to people and shoot wide. The closer you get, the more light you can bring in, and you can keep the iris small. Shoot a low angle, especially children, so they are looking up at the fireworks. Shoot them from the side or behind to see the fireworks burst in the shot. If you angle it right, the faces are naturally lit by the fireworks reflection.

7 - Light Enhancement
Try framing dark subjects so there is a rim light behind them from a porch light or street light. Make sure it doesn't spill on their faces, as it will wash out the glow from the fireworks.

8 - Boom Boom
After capturing the people, move away to get better sound. You'll hear the boom as the fireworks are blasted from the cannon, a great audio clue that the flare is on its way. Once you've seen a few blasts, you can anticipate where they'll end by following the tracers.

9 - No Lights, Please
If you can, ask the pyro-expert beforehand where he thinks the blasts might go. Set up so you have no background lights at all, especially no moving lights like headlights. You'll want your black area as clean as possible for editing.

10 - Shooting Tricks
A one-hour tape should be enough for most shows. If you stop between blasts, begin recording on full black, before the flares enter the sky, Hold the shot until all sparkles have dissolved.

11 - In the Beginning
Stay wide at first to anticipate where the fireworks will land and keep them centered. Pay attention to the wind. If you're downwind, you might get smoke from the fireworks.

12 - Zoom Zoom
Unlike still shooting, after you've shot a few bursts, you can experiment with movement. Zoom in to one blast, until it fills the screen, then let it to go black. Hold the focal point zoomed in for the next shot; hopefully the next blast will fill the screen. Then zoom slowly out. This makes for fun cross-dissolving.

13 - Across the Universe
As I see a tracer beginning, I like to pan across the sky in hopes of capturing as I pan. Then I keep panning to black.

14- Place Image Here
Try framing your shot so one burst lands in the lower left third of your screen and another in the upper right third. Then you can cross-dissolve them in the scene at the same time.

15 - Editing and Finessing
Vary your editing so it's not boring. Start with a few people shots, then cut to a closeup of a face, as a flare flashes. This cutaway bridges the wide twilight shot with the darker nighttime shots. Then let one blast fill the screen. As it fades out, but is not fully black, dissolve your next shot in. I like to edit scenes in odd numbers: three blasts followed by a cutaway of someone enjoying the show. Then several more blasts, etc. The Grand Finale is always your ending shot, perhaps with a closeup of the joyous look on a young child's face. Have fun!

10-01-08, 01:22 PM	#1
山王 Crazy Gamer 我是一個臭皮曩註冊日期: Dec 2002 文章: 1,786	如何用dv影烟花?? 看到youtube的短片中的煙花與實景大有差別, 從短片中的煙花多是白色的暴光, 有時是一整片的紅色或整片的綠色. 我不懂怎樣來講, 總之就是與實景大不相同. 但在電視新聞中所影到的煙花就真的與實景很相似, 影到煙花同時有不同的彩色和明暗, 我都不知他們是怎樣可以影到此種與實景很相同的影片或相片. 敬請各位討論給予意見, 多謝. 在youtube找到的影片 http://hk.youtube.com/watch/v/aESV4p73PiI 無記的影片 http://www.youtube.com/watch?v=TEDBGYtc7IE 其中白平衡、快門應該點set先好? __________________ 認識自己很簡單，你過去做過什麼選擇，你就是什麼的人；塑造自己亦很簡單，你想做怎樣的人，就選擇去做怎樣的事。天人必勝法：如果你無買無睇，編輯曰："你又無買又無睇，你有乜資格插我？"；如果你無買有睇，編輯曰："又要插又要睇，你D人真係犯賤！你咁叻又唔見你出一本？"；如果你有買有睇，編輯曰："比得果十皮，自然係得抄抄埋埋既料，你咁清高可以唔買，我本野係出比翻版仔睇既～" 裡．天人必勝法 : 編輯曰："你寫過攻略乜？你出過GAME書乜？乜都無做過有乜資格評論GAME書？"；無錯，所以影評人無資格評論電影，因為佢地冇拍過電影；政評人無資格評論政治，因為佢地冇從過政。但咁樣講，GAME書編輯有冇資格評論遊戲？佢地都冇製作過遊戲。此篇文章於 10-01-08 01:26 PM 被山王編輯。

10-01-08, 01:50 PM	#2
Designer Registered User 註冊日期: Feb 2004 文章: 8,580	http://www.edgewise-media.com/15qutitovifi.html 15 Quick Tips to Videotaping Fireworks Shooting great firework footage is more than pointing the camera into the sky. The less light you have, the harder it is to focus or capture an image that isn't underexposed or overly grainy. Throw in a fireworks scene that changes from dark to light within nanoseconds, and your camera will need a lot of help from its human counterpart. Let's start with the gear, then go to the technical, setup and finally the techniques. 1 - Gear Use a tripod, but set the drag loose to pan and swivel. A 3-chip cam captures images best, and HD is awesome, but, with good shooting techniques, any camcorder can capture the show, 2 - The Camera's Eye Never shoot with auto focus or exposure. In the dark, the auto iris opens wide, searching for light. When the firework flashes, the shot is blown out before the iris can close. When the sky goes dark, your iris opens again, searching. Auto focus is also in constant motion, attempting to adjust. 3 - No Gain, No Grain Practice before the event. Test your image with your iris on its smallest aperture (around f8 or f11). You might think you should open wide to get in more light, but the images wash out with bright fireworks. Try an ND filter or circular polarizer, too. If you "gain" your image from zero to 9db or 18db, your video becomes grainy, which flattens the fireworks images and makes darker areas look reddish, not black. 4 - Get Focused Landscape or Fireworks settings keep the camera from getting nutty, but manual gives you better control. Set your focus on infinity, if you have it. While it's still light, focus on a roof, tree or pole that's about where you think the fireworks might land. 5 - Staging the Scene Shoot people and fireworks separately. Don't shoot a burst of fireworks, then the people... then the fireworks... you will constantly have to reset your iris and focus, which is difficult at night. Shoot people first, when you still have some natural light. A twilight sky makes a beautiful beginning, especially if you use that polarizer. 6 - Low and Wide Get in close to people and shoot wide. The closer you get, the more light you can bring in, and you can keep the iris small. Shoot a low angle, especially children, so they are looking up at the fireworks. Shoot them from the side or behind to see the fireworks burst in the shot. If you angle it right, the faces are naturally lit by the fireworks reflection. 7 - Light Enhancement Try framing dark subjects so there is a rim light behind them from a porch light or street light. Make sure it doesn't spill on their faces, as it will wash out the glow from the fireworks. 8 - Boom Boom After capturing the people, move away to get better sound. You'll hear the boom as the fireworks are blasted from the cannon, a great audio clue that the flare is on its way. Once you've seen a few blasts, you can anticipate where they'll end by following the tracers. 9 - No Lights, Please If you can, ask the pyro-expert beforehand where he thinks the blasts might go. Set up so you have no background lights at all, especially no moving lights like headlights. You'll want your black area as clean as possible for editing. 10 - Shooting Tricks A one-hour tape should be enough for most shows. If you stop between blasts, begin recording on full black, before the flares enter the sky, Hold the shot until all sparkles have dissolved. 11 - In the Beginning Stay wide at first to anticipate where the fireworks will land and keep them centered. Pay attention to the wind. If you're downwind, you might get smoke from the fireworks. 12 - Zoom Zoom Unlike still shooting, after you've shot a few bursts, you can experiment with movement. Zoom in to one blast, until it fills the screen, then let it to go black. Hold the focal point zoomed in for the next shot; hopefully the next blast will fill the screen. Then zoom slowly out. This makes for fun cross-dissolving. 13 - Across the Universe As I see a tracer beginning, I like to pan across the sky in hopes of capturing as I pan. Then I keep panning to black. 14- Place Image Here Try framing your shot so one burst lands in the lower left third of your screen and another in the upper right third. Then you can cross-dissolve them in the scene at the same time. 15 - Editing and Finessing Vary your editing so it's not boring. Start with a few people shots, then cut to a closeup of a face, as a flare flashes. This cutaway bridges the wide twilight shot with the darker nighttime shots. Then let one blast fill the screen. As it fades out, but is not fully black, dissolve your next shot in. I like to edit scenes in odd numbers: three blasts followed by a cutaway of someone enjoying the show. Then several more blasts, etc. The Grand Finale is always your ending shot, perhaps with a closeup of the joyous look on a young child's face. Have fun!