How to creat Chroma-Zones in studio?

[alex_wang5]

<p>Hello Everyone!<br /><br />I am a photography student and a new member to this website.<br /><br />I have kind of a silly question. I try to search about How to creat Chroma Zones in studio with Gels and background but still keep model right exposure. I can't find an answer<br /><br /><br>

I also see Chroma-Zones by Dean Collins but it's hard to find infor about him. I search and see he has a book, but i don't know whats it name.<br>

<img src="http://static.photo.net/attachments/bboard/00Z/00Z36k-380245584.jpg" alt="" width="500" height="333" /></p>

[henryp]

<p>Sadly a lot of Dean's stuff is out of print. Here's one: <a href="http://www.deancollins.com/">http://www.deancollins.com/</a></p>

<p>Henry Posner<br /><strong>B&H Photo-Video</strong></p>

 

[joseph_dickerson]

<p>You might look for his Fine Light series of educational videos. As far as I know they were only available as VHS tapes, but some may have been re-issued as DVDs. I still use them in some of my classes.<br>

He had one that specifically covered Chroma-zones.<br>

JD</p>

[bunbury]

<p>Hi Alex.<br>

The model and the background are each lit independently of the other. The background must have NO contamination from sources meant to light the model or other components of the photo, just as the model must not be contaminated by light meant for the background.<br>

Each component of the photograph must be lit independently and must not contaminate the others. If light meant for the model contaminates the background the black will NOT be black and colors will be washed out.<br>

Please let me know if this does not answer your question.</p>

[rodeo_joe1]

<p>Have we fallen through a time-warp into the 1970s? Coloured paper backdrop sweeps have been invented you know. Not to mention Photoshop.</p>

<p>Seriously, as Mr. B says, it's all a question of controlling lighting spill with flags, barn doors or whatever. Get yourself a roll of stout black paper, some gaffer tape and a few small booms to tape the black paper to. No studio should be without those ingredients. There's still an issue with coloured reflection off the backdrop onto the subject, especially if you're trying to create a strong BG colour. You only have to look at TV work where a green or blue screen chroma-key has been used to see the giveaway blue or green shadows. Rim lighting on the model helps to wash out such BG interference. Also angling the BG well away from the model, or placing the model at an angle to the BG. That way you can blast light past the model at the BG and have a lot of that light come back towards the BG light and not hit the model. Likewise lighting on the model can then skip past the BG.</p>