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Will this Greenscreen be ok?

Posted: Sat, 21st Feb 2009, 11:48am

Post 1 of 14

DingDong555

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hey guys!

Awesome program, I LOVE IT!

Basically I want to take some pictures of my up coming computer build....white backdrops get too dirty.

Will the greenscreen below be ok? So when I take a picture of a computer case,I can change the WHOLE background to pure white?

http://cgi.ebay.com.au/Chroma-Key-Green-Screen-For-Video-Photography_W0QQitemZ280295966259QQcmdZViewItemQQptZAU_Cameras_Photographic_Accessories

THANKS!
Posted: Sat, 21st Feb 2009, 12:26pm

Post 2 of 14

DVStudio

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Hi there-
The green screen itself looks okay- the right color and all. The thing is though, with greenscreening and compositing, the trick is in the lighting. That is what will make or break a shot. Consider picking up some worklights from Home Depot or a similar store. They can be found pretty cheap and get the job done-- but they can get HOT.

For some help with setting up lighting, check out my tutorial: http://fxhome.com/forums/viewtopic.php?t=37835&sid=

Also, Tubetape carries awesome green screens as well. Maybe check them out too. www.tubetape.com
Hope this helps!
Posted: Sat, 21st Feb 2009, 1:01pm

Post 3 of 14

DingDong555

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Hey!

Thanks for the quick reply! Much appreciated!!

For lighting....I have a 150watt halogen lamp thing, the common one most people use for budget lighting, I will probably pick up another one. Are they ok? 150watts not enough? I hope the screen will work ok smile

Thanks!
Posted: Sat, 21st Feb 2009, 2:03pm

Post 4 of 14

DVStudio

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Yeah the light should be okay. It really depends on the size of the greenscreen. For example, I use 3 500W halogen lamps and 2 other 100W lamps to light an 8X16 greenscreen. If yoiur area is small (about the size of a copmputer) then 1 or 2 lights will do.

Do you have photoshop? I don't know whether you're taking videos or stills, but you can snap pics and then 'cut' the computer out (erase the background you don't want) and put it on a crisp, digital white one. This would eliminate the need for greenscreen. if you don't have photoshop, I could do the work for you for free if you wanted. Just shoot me a PM. Just a thought if you didn't want to spend more $$$ on lights and greenscreens.
Posted: Sat, 21st Feb 2009, 10:46pm

Post 5 of 14

DingDong555

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Thanks man!

Well....I do has PS but I never new how to do it, is it just by the magic wand tool? If so, I can NEVER just select the object, it always selects a few parts of the background etc...

Thanks again!
Posted: Sat, 21st Feb 2009, 11:09pm

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Axeman

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SuperUser

With an object like a computer that has such simple, definite edges, I find it easier to use the pen tool, or the various variations of the lasso tool, to make the selection.

However, to me, DVstudio's reasoning that Photoshop 'eliminates the need for a greenscreen' seems completely backwards. The greenscreen process was developed to eliminate the need to mask an object out by hand. Don't get me wrong, I use Photoshop a lot, and sometimes there's no other way than to laboriously rotoscope a mask the old fashioned way, but for general purpose a greenscreen is where its at.
Posted: Sat, 21st Feb 2009, 11:16pm

Post 7 of 14

DingDong555

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Yeah, Considering a greenscreen is only $25 (with shipping to me in AUS) I may aswell....I have spent over $50 on Foam Core card, which isn't the best.

Thanks a LOT for your help guys, very awesome wink
Posted: Sun, 22nd Feb 2009, 1:44am

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Paradox Pictures

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DingDong555 wrote:

Hey!

Thanks for the quick reply! Much appreciated!!

For lighting....I have a 150watt halogen lamp thing, the common one most people use for budget lighting, I will probably pick up another one. Are they ok? 150watts not enough? I hope the screen will work ok smile

Thanks!
150 watt might be to dim if you are using a softbox or umbrella.
Posted: Sun, 22nd Feb 2009, 1:56am

Post 9 of 14

DingDong555

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Nope, I'm using a greenscreen with lights, no soft boxes etc..
Posted: Sun, 22nd Feb 2009, 10:24pm

Post 10 of 14

DVStudio

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Axeman wrote:



However, to me, DVstudio's reasoning that Photoshop 'eliminates the need for a greenscreen' seems completely backwards.
Yeah. I was talking about in this case though. I use greenscreen a lot (in everyone of my videos and on my website), but also use photoshop for other simpler things. Green/blue screen is an awesome tool and is very handy and has sooo many uses. I actually just used it today:

Posted: Wed, 25th Feb 2009, 11:39am

Post 11 of 14

DingDong555

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Nice man!

if possible, can you please do "magic" and change the background to white? I wish to see how it looks!

Thanks!!
Posted: Mon, 2nd Mar 2009, 10:04am

Post 12 of 14

Bflat5

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I think I'd avoid that particular greenscreen. It's a very thin plastic and will likely tear very easily. If you're going to spend money you may as well spend wisely, IMO, and buy something that will last and cover a little more space.
Posted: Thu, 12th Mar 2009, 5:20pm

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FXhomer84831

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Are they seriously selling plastic shower curtains as a backdrop? Go to your local hardware store, buy a few yards of roll out vinyl flooring, use the back side, google green screen color codes (or buy the 1 gallon from Rosco), tack the vinyl to a 2x4 or 1x2, mount to wall. About $20 or less total if you if mix the paint.
Posted: Thu, 12th Mar 2009, 8:04pm

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StuntMusic

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You can get 150w flourescent (daylight balanced) bulbs (which remain nice and cool) and put them into worklights and then drap a scrm (or shear white cloth) to make ultra fast and easy softboxes.

Microphone stands with booms attached make for cheap light stands (about $20 for an inexpensive one)

I plan on building a simple light bar using an 8' box with 6 bulbs in it, covered with a mylar or ripstop material. One swtich turns it on and instand even lighting. Hooks to hang it, or the box can stand on end as a vertical light.

You can also buy LED light bars from musical supply places that produce a decent about of light for low $$