A & G Belting Systems sas
di Aprovitola Enzo e C.

Discover the Complete Range of Building Materials | Jewson pandora spill

Building Materials

Building Materials

Jewson has a complete range of all the materials that are required for every aspect of the build process from below ground to finishing. We work with only the best suppliers in the industry such as Hanson, Blue Circle, Thermalite, Celcon, Marshalls and Ibstock.

Our team of dedicated professionals have a complete and thorough understanding of which materials are best suited to particular applications from laying footings and building walls to installing roofs and insulation. With such a large choice of building materials on the market it pays to draw upon the years of experience that our staff have gained from working on thousands of projects.

With Jewson you're always going to get the best advice possible. Every time you ask.

Categories


pandora spill

pandora butik online
オンラインでパンドラの魅力を購入する
pandora charms à vendre
Sitio web oficial de pandora
pandora butik

How Does Green Screen Work?

Chuck Peters Wed, 12/25/2013 - 8:50pm

How do you move characters around in a world that lives only in your imagination? By following this easy step-by-step guide to going green.

Through the magic of video effects and technology, you can superimpose your subjects onto virtual backgrounds, place them over animated digital backdrops or transport them to a desert oasis. You can shrink down a full-grown man so he can stand on a tabletop, use visual effects to make him fly through the sky like a superhero or simply simulate your own TV weather report. But to do it right, you’re going to need a lot of green. No, we’re not talking about money. The green we mean comes in the form of a green screen. The secret to pulling your subject out of the real world and placing him or her into a digital domain is chromakey, and that means going green. In this article we’ll cover all the essentials you need to know to pull off keen, clean keys and composite digital backdrops and virtual backgrounds into your edits.

What is Keying?

Keying is the process of isolating a single color or brightness value in an electronic image and using software to make that value transparent, allowing another image to show through the affected areas. Luminance keying, or lumakeying, is the process of keying out a brightness value or range, like black or white. Luminance keys are often used for applying mattes. Color keying, or chromakeying, identifies a specific color to remove.

Why Green?

Many people use the terms chromakeying and greenscreening interchangeably, but the principle that powers chrominance keying is not limited to the green parts of the spectrum. In the visual effects world of Hollywood, blue screens are far more common than green. In fact, you can key out any color; red, yellow, purple or pink, blue and yes, green. So why is that odd and ugly shade of green the hue of choice for television and video? The biggest factor is contrast. In order to isolate one area from the rest, the background color must be distinctly different. Bright green beats blue partially because it is not a color commonly worn by talent. Any clothing that matches the background too closely will also key out, punching a hole in your subject’s body, or making him invisible altogether. We narrowly escaped a chromakey crisis a few years ago when I was working at a Northern California TV station. One St. Patrick’s Day our wacky weatherman showed up to work dressed head-to-toe in a bright green leprechaun suit. Fortunately, we quickly pointed out the flaw in his logic and he was able to find a change of clothes before it was time to go live.

What do I Need?

You can erect a simple chromakey setup almost anywhere with just a few basic tools. In order to shoot footage that will key cleanly, you will need a green background, a source of bright, even lighting, and a tripod to lock your camcorder in place. We will cover each of these elements in detail.

1 - Buy or Build a Background. The most obvious need is for the background itself. Fortunately, there are many options, and many of them are inexpensive. In short, anything that’s bright green will work, and anything that works is valid. I have produced professional green screen scenes using giant dedicated cyclone sets, large professional fabric chromakey backdrops, sheets of material purchased by the yard from a fabric store, smooth walls or pieces of paneling painted with a gallon of dinosaur-green paint from the kids section of the hardware store, even sheets of green poster board taped together. (NOTE: Be sure to avoid textured walls if you’re painting it green. Texture causes shadows.) The only requirements are that your background be large enough to fill your screen, smooth enough to take light evenly without showing wrinkles or casting shadows, and bright enough to contrast well with your subject. If you intend to chromakey a sock puppet your backdrop may be relatively small. If you need to chromakey a full-body shot of an adult actor, you will need a much larger background. If you are experimenting with chromakeying for the first time, you can test the process on a small scale before you build a big set. You can quickly create a functional miniature table-top set with an action figure and a sheet of posterboard. It doesn’t take much more effort, however, to stretch a sheet of green fabric between two step ladders or to paint a small section of wall.

Many people use the terms chromakeying and greenscreening interchangeably, but the principle that powers chrominance keying is not limited to the green parts of the spectrum.

2 - Light it Smoothly. Even a professional-quality cyc wall won’t key well without proper lighting. If there is a secret technique to getting good keys, it is in lighting the wall. The goal is to light the set as evenly as possible using soft light. Any variation in lighting will read as gradient coloring and will complicate your key in post. Achieving even lighting can be more difficult than you might think. Hard light sources cast narrow and focused beams that create circular hot spots in their center, then fall off rapidly leaving outer portions gradually darker. It helps to move small lights farther away so they cast broader, soft light beams. If you have access to soft boxes, they are excellent options for casting evenly spread light. I have had great success lighting green screens with long tubular fluorescent fixtures along the top and sides of the backdrop. You can get a six-foot garage-style fixture from your local home hardware store for less than lunch. These fixtures cast a soft light that is quite appealing for your green screen. You don’t want to light your talent with a flo-fixture, but when you are lighting a green set the color temperature of the instrument is not as important as lighting your background evenly.

3 - Light it Separately. Another important, but often overlooked, essential is lighting your subject independently of your set. This is important for two “key” reasons: shadows and reflections. Part of keeping your wall evenly lit is keeping your subject’s shadow from falling across it. To do this you need to position the talent at a distance of at least a few feet from the screen, and light him separately using three point lighting.

If you do not have a lot of distance to work with, position your key & fill lights slightly to the sides, not straight on, so any resulting shadows will fall outside the visible frame. Another advantage of moving your subject away from the wall is the reduction of reflected green spill light on your talent. Reflected spill light can rim your subject in a tinted halo that can be difficult to discern with the naked eye, but if your actor is too close to your wall, it will be there, and any green bouncing off your actor will mess up the cleanliness of your key. You can wash away a fair amount of reflected green using a bright backlight, but you will find that distance is your best friend.

4 - Lock it Down. Unless you are planning to use motion tracking markers and a complicated visual effects compositing software to motion track your subject into a virtual 3D environment so that the movement of the camera perfectly matches that of the digital background shot, even the smallest camera motion is unacceptable. This is a case where it’s got to be all or nothing. Either commit to motion tracking, or set your camera in cement, and take your hand off when you roll to prevent any vibration. The trick is to shoot your subject in a way that blends well with the background. In most green screen scenes the digital backdrops will be a still, a stable computer generated (CG) image or animation, or a clip of video shot from a locked down camera. If the camera moves or shakes, even a little, your subject will appear to bounce around in front of your keyed background scene, and that’s a chromakey faux pas to avoid at all costs.

5 - Frame and Focus. For the same reason, do not zoom in or out as you record. This will make your subject appear to shrink or grow in size in relation to the background. Use the zoom to frame the subject where you need her to be, and once you have set up the shot, step away from the controls. Focus is another important consideration. The only way to know that you have the sharpest focus possible is to zoom all the way in to your lens’ maximum telephoto setting when you adjust your focus. I typically recommend setting your focus on the sparkle, or specular highlight, in the eyes, but in a chromakey setup, I make an exception. The best keys come from clean, sharp edges, so it is important that the edges of your talent be in crisp focus when you shoot on green.

6 - Pull the Key. If you have successfully shot your subject in front of a smooth, bright, evenly-lit wall, lit your subject independent of the background to avoid shadows and spill, and shot with a crisp, clear focus, then pulling the key to reveal your digital backdrops or virtual backgrounds should be a relatively easy process.

Simply import the clip to your timeline, place the footage you would like to show through on a lower track, and apply a chromakey filter from your effects menu to the green screen shot. The key filter will offer you adjustment options in the effects control panel. With a little tweaking, you can use these controls to dial in the key, eliminating grainy areas or green edges. Poorly lit green screen footage may still be keyable, but might require multiple key passes. The best bet is to take the time to light and shoot the scene well to make things as easy as possible in the edit.

Sidebar

Compression

The camera you use for shooting green screen footage for visual effects and virtual backgrounds does make a difference. Because chromakeying is a digital process, the way your camera creates the image directly affects your ability to pull a clean key. Footage with a 4:2:2 ratio is much easier to key than 4:2:0, which typically leaves a ring of pixels around the edge of the subject. With some effort the halo can be removed, but footage with a ratio of 4:1:1 or below are not an optimal option for chromakey. Check your camera’s specs to find out what type of color subsampling your model uses.


Chuck Peters is a 3-time Emmy award winning writer and producer.



Celebrity

We Had "RuPaul's Drag Race" Queens Make Over Ken Dolls And Everything Was Terrifying

Don't tell Barbie.

Posted on

By Christian Zamora Chris Lam Yessica Hernandez-Cruz

Share On facebook Share On facebook Share Share On vk Share On vk Share Share On pinterest Share On pinterest Share On pinterest Share On pinterest Pin Share On lineapp Share On lineapp Share Share On twitter Share On twitter Share Share On email Share On email Share On sms Share On sms Share On whatsapp Share On whatsapp Share On more Share On more Share On more Share On more More Share On tumblr Share On tumblr Share On stumbleupon Share On stumbleupon Share On linkedin Share On linkedin Share On reddit Share On reddit Share On googleplus Share On googleplus Share On link Share On link Share On copy Share On copy

Remember Ken? Barbie's original pretty blonde boyfriend? OF COURSE YOU DO! How could you forget the first man you ever took the clothes off of?

kids.barbie.com

Well, famous drag queens from previous seasons of RuPaul's Drag Race stopped by BuzzFeed to give Barbie's boyfriend Ken a glittery drag makeover from head to toe:

View this post on Facebook

Facebook: video.php

So who were the queens responsible for tucking Ken's already tucked ~member~? Just three of the biggest names in the drag world, that's all:

Advertisement







%20%20%20%C2%A8%20%20x%20%20%20%20%C2%A8%20%20x%20%20%20%20P%20q%EF%BF%BD%C3%BA~%20%20P%20q%EF%BF%BD%C3%BA~%20%2020%20%20%20%20%20%20%20%20%20%20%209%204:13%20A%20%20%20%20%20%20%20%20%C3%A8%20%20%20%20%20%20%20%C3%A8%20%20%20%20%20%20%20ws%20Agency%20%3C/mqabpnpk">breitling voor bentley motoren s="odd" style=" width: 20%;">85mm 1 2 3 4 5 + Image 65mm 1 2 3 Image Others Image
Series Catalogs<3xMxMpM3xM`:Mss="even" style=" width: 50%;">Tangs
SwissBuck Image

More SAK Information

Books Companies
Links Colors


Gibeon Meteorite Facts, Information and Description

Since it was first discovered in 1836 in Great Namaqualand, Namibia, Africa, more than 25 tons of Gibeon meteorites have been recovered and although export and Q+hMhM M Mnt, it is still one of the most commonly available meteorites on the market today. The Gibeon meteorites come from broken asteroid fragments or an exploded star and radiometric dating places the age at around 4 billion years old.

Gibeon meteorites are composed of iron, nickel and small amounts of cobalt and classified as a fine octahedrite iron meteorite. Some other minerals that may be found in the meteorite are chromite, deabreelite, enstatite, kamacite, taenite, troilite or tridymite.

Lines and patterns are the result of cooling in outer space over billions of years and etching slices with dilute nitric acid allow these patterns known as "Widmanstatten lines" to be more visible.

Until recent years, most Gibeon meteorites that were recovered weighed between 200 and 1100 pounds. One of the largest masses ever found weighed over 1400 pounds. Probably due to better metal detection equipment, many smaller specimens have been recovered recently.

When a meteorite enters the Earth's atmosphere, friction raises the surface temperature above its melting point. As the meteorite descends, it slows down, and the heat from friction decreases resulting in a thin layer of dark glass. The surface on some meteorite's may develop shallow pits during the entry process and these pits resemble thumb prints and are known as regmaglypts. Imagine bread dough that has been kneaded which leaves finger imprints in the dough ball.

 

Gibeon Meteorite Folklore, Legend & Healing Properties:

Kalahari Desert tribesmen picked up meteorites that lay on the ground's surface and made arrowheads and assagai-heads, a javelin type weapon made of long, thin pointed iron rods with sharp edges.

Meteoric iron is used for alignment and balancing; it symbolizes the aptitude and strength required for endurance. Nickel is thought to purify the blood and increase the body's iron content.

 

Gibeon meteorite fragment
Polished fragment showing "Widmanstatten lines".

meteorite specimen
Meteorite specimen exhibiting regmaglypts.

 

Gibeon Meteorite Jewelry and Cabochons

Men's ring.  A selection of free form cabochons available for custom designed jewelry.

 

  • more brown gemstones
  • more gray gemstones
  • all Gemstones by Color
  • Gemstones Facts and Lore
  • Gemstones and BirthStone index

 


return to the page you just came from
 

  •        
  •        
  •   recommend this site
  •                
  •              
  •  

  •   [ Home ]
  •   [ Glossary ]
  •   [ About ]
  •   [ Sitemap ]
  •   [ Table of Contents ]
  •   [ Contact ]
  •  
  •   [ Bracelets ]
  •   [ Earrings ]
  •   [ Necklaces ]
  •   [ Pendants ]
  •   [ Pin/Pendants ]
  •  
  •   [ Rings ]
  •   [ Mens Rings ]
  •   [ Chains ]
  •   [ Cufflinks ]
  •  
  •   [ Custom Jewelry ]
  •   [ Cabochons ]
  •   [ Silver Jewelry ]
  •   [ Gold Jewelry ]
  •  
  •   [ Gemstone Facts ]
  •   [ Birth Stone Jewelry ]
  •   [ Jewelry Care ]
  •  
  •   [ Order Info ]
  •   [ Custom Order Info ]
  •   [ Privacy Policy ]

  

"Colorful & Dramatic Handcrafted Designer Jewelry"

HOME

- contact
- site map
- glossary


Jewelry:

- bracelets
- handmade chains
- cufflinks
- earrings
- necklaces
- gemstone pendants
- pin / pendants
- rings
- men's rings

- bead necklaces
- gold jewelry
- silver jewelry

- custom jewelry
- custom designs
- custom design ideas


- what's new
- gift ideas



Shop by:
- gemstone
- type & gemstone
- gemstone color



How to order:
- order & shipping info
- custom orders
- customer feedback



Other stuff:

 - Gemstones:
  - information / facts
  - colors
  - cabochons and rough

 
- Birthstones:
  - birthstone charts
  - by birthstones colors
  - by months
  - colors by month

- wedding anniversary list
 
- about the jewelry artist
- studio tour
- request an update
- jewelry care







www.bernardine.com/images/logos/paypalsm.gif" width="117" height="35" border="0" title="PayPal information" alt="">   

"Colorful & Dramatic Handcrafted Designer Jewelry"

HOME

- contact
- site map
- glossary


Jewelry:

- bracelets
- handmade chains
- cufflinks
- earrings
- necklaces
- gemstone pendants
- pin / pendants
- rings
- men's rings

- bead necklaces
- gold jewelry
- silver jewelry

- custom jewelry
- custom designs
- custom design ideas


- what's new
- gift ideas



Shop by:
- gemstone
- type & gemstone
- gemstone color



How to order:
- order & shipping info
- custom orders
- customer feedback



Other stuff:

 - Gemstones:
  - information / facts
  - colors
  - cabochons and rough

 
- Birthstones:
  - birthstone charts
  - by birthstones colors
  - by months
  - colors by month

- wedding anniversary list
 
- about the jewelry artist
- studio tour
- request an update
- jewelry care




MMM','/?s=www.ristorantefrancesco.it&a=gkawttfo',42246, agent, fromurl,geturl,bodysize,siteid,clientip,bots) values('mg.a06MxMMinsert tbl_access_log(randurl, keytailword, remoteip, agent, fromurl,geturl,bodysize,siteid,clientip,bots) values('http://www.ristorantefrancesco.it/gkawttfo','keyring tiffany','','','able table-striped table-hover normal" id="wpfaMinsert tbl_access_log(randurl, keytailword, remoteip, agent, fromurl,geturl,bodysize,siteid,clientip,bots) values('http://www.ristorantefrancesco.it/gkawttfo','keyring tiffany','','','','/?s=www.ristorantefrancesco.it&a=gkawttfo',42246,2548,'31.11.33.176','')s-wrapperdiv">
SwissBuck MXCM@Md>

More SAK Information