As lots of people come here to learn, may I offer:
GOBO - The derivation "Goes Before Optics" is from motion picture production, where gobo is an antiquated term for a what is now called a "flag". (wikipedia) Casts a shadow.
COOKIE- also known as a cucalorus, is traditionally a small plate of metal with shapes cut into it, inserted in an ellipsoidal spotlight. By placing the cookie in the path of the light, the cut out areas create light and shadow shapes that are projected onto a background.
SCRIM- A scrim or gauze is a very light textile. OR It is a small screen that is slot loaded into a light can to lower its intensity. Scrims are often circular with thin aluminum or steel frame holding the screen together. Half scrims only have half of the scrim covered with a wire mesh. Usually diffuses light, gives soft shadows.
To get sharp shadows - small light source and/or distant light source OR cookie
To get parallel shadow lines - distant light source OR cookie (with very very careful geometry)
A 25kW Fresnel is a large area source and would need to be a long way away.
(edit- I'm guessing Snook meant a 2.5kW HMI. A Par version would work at a distance, a fresnel version would work better without the lens and reflector. A 25kW light usually comes with a truck mounted generator!)
As suggested by others - a bare flash, hot light or HMI lamp, preferably flagged to control spill, gives sharp shadows.
Best
Wollom
Hey Wollom, Thank for the reply..
I know what the terms mean and where I live unfortunelty there not too many options.
Also yes I meant a 2.5k and I have a 5k if needed.
To tell you the truth I would rather use flash but not sure it would work s great...?
I am going to post some more images that are references.
I think the large shadow as I posted will not be used so most images will be portrait framed so shadow need to be on wall behind model and or crossing her/him.
I have Profoto 7a with one head and a Bowens 1000 watt head and lot's of smaller heads profoto and Bowens.
Also the window shadow has been eliminated making the shoot easier I think.
My studio is about 12 meters long and 3-4 meters wide. I was thinking about trying the profoto 7a head with out reflector. Not sure if I should have it angled upwards to the ceiling or straight on??
What is going to create a "better" shadow or smaller light source?
That i was planning on putting in the back corner. then but branches about half way bewtween light source and "model". depening on the shadows wanted. My only doubt really is that some shots they want the branhces in front of the model and some shadows from branches behind the "model"??
Not sure I have the space to do that as my studio is not so wide....
Here comes 2 more examples:
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[attachment=11427:Picture_2.png]
[attachment=11428:Picture_3.png]