Light Barndoor
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 180ws Photo Studio Mini Flash Lighting Kit Barndoor  US $85.99
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 Photo Video Studio Barndoor Light Kit 7 Head Socket US $85.95
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Which lighting & software is better?
So I'm new to this i can't decide onto which is better? Do watts make any difference? Is higher watt too bright? Professional photographers please help me out! Also, do i need strobe light & barndoor? I'm not doing videos just photoshoots.
http://www.tubetape.net/servlet/the-220/Essential-Chromakey-Photo-Kit/Detail
Or
http://cart.owens-originals.com/VU-PRO-PROFESSIONAL-COMPLETE-DIGITAL-STUDIO-KIT-p/vpds1.htm
These are what is known as continuous or 'hot' lights, not flashes (or strobes). You require a much higher wattage for continuous lights to get enough light on the subject and they are called hot lights for a reason - they get hot! Models can get uncomfortable under them after a while and you have to be careful with modifiers (softboxes & gels in particular) so they don't melt.
I don't work with continuous lights I prefer strobe (flash) lights. More comfortable for the model to work with & I find the quality of the light better. Flashes can either be 'pack & head' systems or monoblocs (cheaper). They come in different power outputs too - measured in W/s (watt seconds). For indoors work 150-200 W/s is plenty. For outdoors, where you might want to be over powering the ambient light, you need around 400 W/s or greater. For out door work of course you'd also need a portable power pack, which makes these units expensive.
Alternatively, consider hotshoe flashes (speedlights) - much lower than a studio flash at around 60 W/s but fine for studio work and outdoors when ambient levels are a bit lower (sunset for example).. Very lightweight & portable & cheaper than a studio flash.
The light modifiers in the package (umbrellas & softboxes) make the light source larger (and therefore the shadows softer) but also allow light to spill around (esp. umbrellas) where you might not want it to go. Barndoors are used to prevent light spill in a particular direction when you might want to flag it from either causing camera flare (if you're shooting towards it) or to keep it off a background (if you want a low key, dark b/g)
Why are you going for a green chromakey b/g? A white (or neutral grey) would be more versatile as you could gel your lights to green if you want a green b/g. A green b/g will always be green but a white (or grey) one can be any colour you like.
Cool Lights Video Magazine EP001 - Barndoors on a worklight
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