Showing posts with label lighting. Show all posts
Showing posts with label lighting. Show all posts

Saturday, February 12, 2011

Modding a mic stand for swing-arm action -- Shelley, this one's for you!

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 Shelley really got me thinking about this the other day.

Well, I finally unpacked enough stuff in my new house that I can begin animating! I set up a shot (I want to get a little more practice in with Skulkin before I start in on the actual film itself) and discovered that even with my upgraded lighting grid, I just can't get lights to all the places I really want them. I had already built a pair of extensions I can clamp to the ceiling joists to clamp lights to, because I wanted some lights lower than my original grid would allow. But still I was too limited... I needed some way to attach a swing arm boom to them. I spent the evening cogitatin' on this problem, and slowly but surely ground out a solution using a couple of mic stands I already had on hand.




They're just cheap stands from Musician's Friend, similar to this one.






Mine aren't that tall though... I got some kind of shorties. I'm sure either will work just fine... a longer one might reach down lower than mine. 







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One problem I had to overcome - the tubing used for the mic stands is too small in diameter... the C-clamps I have won't close down small enough to get a grip on it. I solved that with two pieces of wood and a little electrician's tape (I haven't unpacked far enough to find my gaffer's tape, or I'd use that instead).

This kind of C-clamp can be bought from a music store or a lighting supplier who handles disco type lights. If you walk into a hardware store and ask for a C clamp, they won't have this kind.







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Here you see it all taped up. Now it can get a tight grip on the mic stand.






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I had to use 2 C-clamps... one to attach it to the ceiling joist and one to attach the lighting unit. Notice I removed the bolt from the clamp that will attach to the ceiling.






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Here's the whole assembly. Oh, I didn't get pics of this, but I had to cut off the bottom of the stand to remove the tripod legs. A hacksaw is essential equipment!






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Here's the ceiling attachment. Now you can see why I had to remove the bolt... though I suppose you could substitute a big wood screw and mount it permanently, or drill through the joist and use a coach bolt. I like the ability to move it wherever I want though.






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Another shot of the mount... plus the big knob that tightens the swing arm boom.






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It can swing from here too.






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The business end, bearing one of my modded Blackbird PAR 16's. Oh, I finally managed to find a US site that sells barndoors for them! Here it is: Stage Spot.





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I wanted to post this one to show how I attached the tracklight unit into the snout of a PAR 16. The older PAR units I bought from Musician's Friend were made a little differently, and you could just jam them together for a perfect pressure fit, but the newer models have thicker rivets inside that prevent that, so I just busted out the FastSteel epoxy putty and packed a ring of it inside. First I coated the end of the tracklight unit itself with dishwashing liquid as a release, and before the putty fully cured I gently rotated it to break the bond... now the putty will stay inside the PAR snout and I can remove the track light if I want.

Tuesday, June 02, 2009

New additions to the lighting grid -- fine tuning the Movie Making Machine

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I've been running into some frustrating limitations in my lighting grid.... lights can only be directly over the table or a couple of feet in front of it. I wanted to be able to get lights lower, and to position them farther from the table in any direction. So I got a few accessories from the hardware store and rigged up a pair of these nifty ceiling-mounted light posts.

A 4 foot length of hardwood dowel, a couple of pipe clips, and some big hefty C clamps is all it took. I can clamp the posts wherever I want to the ceiling joists (incidentally, the clamps ensure that I don't permanently mar the joists). I always have to laugh at sizing conventions in the hardware world... a 1" diameter dowel fits into a 1" diameter hose clip with about 1/4" of clearance all the way around. I had to jam pieces of wood into the gap and fill the chinks with hotglue. But I guess the pipe clips weren't made to fit real snug anyway. Oh well, it works.

The other day as I was setting up for one of the Skulkin animation sessions I was struck by a thought....

The stopmotion studio is all one machine. All of it... every part.... the table with the holes drilled in it, the little puppets that can be secured to it, the lighting grid, the camera positioning apparatus, the camera and the capture device (computer, software). It's all made to work together in perfect harmony, like clockwork with you as the operator - nothing moving or changing until you want it to.

The really cool part is when I get the puppets set up and get ready to do a shot.... I position and plug in the set lights I'll be using one by one, and then switch off the normal overhead light. This process is a gradual transition from the ordinary basement surroundings into the Stopmotion World. Now only the set is lit, and it takes on a special look... far more attractive than under ordinary household lighting. The mess that is the rest of my basement fades into darkness behind me, and now my attention is focused completely on those little puppets that I labored so hard to make, and will now labor to bring to life.

Welcome to the Stopmotion World!!!

In fact, now that I think about it, you could extend the machine metaphor to include the shelves full of books that feed my knowledgebase... the DVDs and tapes that provide invaluable inspiration... even the computer that connects me to the internet... to other animators and friends all around the world. Wow... it means my machine is connected to Shelleys, and Svens, and Jeffreys... and to YOURS if you're a stopmoe!!! Insprirational!!!! 

Saturday, October 27, 2007

Sunday, July 01, 2007

Up to par?

Well, the awesome Pro-Light, my birthday present to myself, arrived the other day - and what a treat to assemble it and hang it on my grid! It looks perfect there, and it lends my entire "studio" a nice professional look. However, as soon as i got it all set up and switched it on, I must admit to a bit of disappointment. I mean geez - I paid quite a pretty penny for this beautiful little gadget, and it turns out all it does is cast light on my set! Hell, I've got lots of things that do that! Yes, it's got ultrasexy barndoors (well, it doesn't sound very sexy, but oh yes, it sure looks hot!) - but they do so little - seriously I could accomplish more with a little cinefoil (thick black aluminum foil used to shape light beams) or some cardboard attached to a wire in front of a light.

The main advantage to this particular light - really the reason I bought it - is it has an "adjustable, focused beam" that they say is "fresnel-like". Well yes, there is a switch on the side that changes the quality of the beam. It's supposed to change it from spot to flood, but mostly it just seems to function as a sort of crappy dimmer. I suppose the width of the beam does change a little, but it's hard to tell - maybe if I had more room, but I'm using it about 6 feet from my set. Well, I began to wonder it this (rather expensive) light is really all that much better in any way than my good old par cans. So I put them to the test. Below are a series of pictures demonstrating the shadow clarity of each light under various conditions. See, that's the beauty of a focused light like a fresnel (or the Pro-Light, at least supposedly) - it's able to cast a good crisp shadow. I can think of certain situations where I'd want to use this feature.... for instance in a shot where all you see is a puppet's shadow on the wall. Here's how the lights stacked up, with a surprise contender at the end ( the object casting its shadow is my animation camera).....

Lowel Pro-Light, beam centered:
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Lowel Pro-Light, edge of beam:
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(Yes, I discovered a strange thing quite by accident - shadows are a good deal clearer at the edge of a disc of light than at the center!)


Par 46, beam centered:
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Par 46, edge of beam: (not too shabby really!)
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But here's our surprise contender folks.... by far the best and crispiest shadow yet....

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What is it, you say? Why, but of course - it's nothing more than a simple hardware-store clamp light housing an unfrosted 75 watt bulb from the corner convenient store - total cost about $3.00! Not as bright as either of the centered images above of course - those lights are 200 or so watts each, but it's about as bright as the non-centered images. Here's a nifty shot of our little hero:

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Normal household bulbs are frosted, giving them that familiar whitish appearance. This scatters the light beams, diffusing them for a more pleasing appearance - it softens shadows, see? But it also fuzzies them up quite a bit. The unfrosted bulbs are less common, but can still be found at most stores that sell bulbs, and give a nice clear shadow quality. I wonder if they can be bought at higher wattages?

Anywhoo, I'm now convinced that the single greatest feature any light can have is some form of gel frame or filter holder, so you can insert colored filters or diffusion or scrims to tailor the light. The par cans have them, and I could buy ten of them for the price of one of the Pro-Lights! In fact, I even have a swingarm desk lamp with a piece of diffusion taped over it! See, what I'm finding is that the pro quality stuff is maybe slightly better than ordinary household lights, but not at all worth the enormous price difference! (And in some cases, for certain specific applications, the household stuff is actually better.)