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The Magic Cafe Forum Index » » F/X » » Projection of Close Up Show (0 Likes) Printer Friendly Version

hkmagic
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Colombia
108 Posts

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I Am planning to project my close up show in stage, The screen is only 42", I want to know about

Camera: a Camera with 640 x 480 resolution Would do the job?, wath is the best angle to put the camera, front, diagonal, side.

Screen: 42" screen next to the table.

Projector: I don't need it to far from the screen.

Wath suggestion do you have for this kind of set up.

Thanks
"May the Magic be with you"
biff_g
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Canada
240 Posts

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This probably isn't what you're looking for, but my first suggestion would be to get a larger screen. I had a 54" screen and found it way too small. I wouldn't go much smaller than an 8' screen, and I actually have a 9' something by 7' something screen that I have been really happy with.
sb
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How big is the room/theater? 100 person theater would have different requirements than a 1400 person house.

Are you doing an entire show this way? Are all the effects are close up, and going to be projected, or are there some "stand up" effects?
David Bilan
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Clarksville, TN
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Starting from the camera... 640 x 480 will work, but 720 x 480 is TV standard definition.

How good is the camera? You've told me you car will drive 60 miles an hour and ask if it's a good choice to go up Pike's Peak. Good lighting will make a huge differnce.

Angle: Most effects are meant to be seen from straight on. Here the question, do you want to focus just on the hands/tabletop? If so, your best bet is to build a rig to shoot straight down on the table. This means no one see your face or any spectator's face, reducing the impact of the effect.

If shooting from straight above, mount light and camera on a cross bar directly above the working surface.

The screen and audience need to be in a darkened area. You need to be brightly lighted. Turn off the auto focus and auto iris.

As to audience distance from the screen:

Quote:
A general rule for the TV viewing distance based on the SMPTE and visual acuity guidelines, is that the nearest TV viewing distance between you and your big screen TV should be limited to approximately twice the screen width (more precise 1.87 x screen width for a subtended angle of 30 degrees), while the furthest distance being no more than five times the width of your screen.

This rule of thumb should give you a fairly good approximation for your TV viewing distance. It does not necessarily represent the ideal home theater viewing distance but rather the limits within which your TV viewing distance should theoretically be out of the trouble zone.

In other words, move closer than twice the screen width size, and the picture scanning lines, pixels and any other video artifacts will become too visibly intrusive - leading to distractions that will spoil your movie watching experience. Move further away than 5 times the screen width and your vision system will no longer be able to resolve all the picture detail.

But…

It is also important to realize that these maximum and minimum viewing distances should be seen in the light of the video signal definition.

A fully resolved high definition TV (1080i, 1920x1080) supports a closer viewing distance than standard analog TV. Thus while twice the screen width would be the ideal TV viewing distance for a HDTV display, it would be a bit too close for standard TV; in the later case, a three times the screen width would be a better option.

Similarly, the five times the screen width as the maximum view distance, while more than adequate for a standard analog TV picture, is a bit too far away for a person to see the fine detail supported by a HDTV picture – a three to four times the screen width represents a more practical limit for the maximum viewing distance in the case of HDTV.

These rules-of-thumb work best with big screen TV sizes in the range 42-inches and over.

From an article by Andrew Ghigo – A Telecoms/Electronics engineer by profession, with specialization in digital switching and telecoms fraud management systems.

Editor and publisher of http://www.practical-home-theater-guide.com - a site dedicated to all home theater enthusiasts with the scope of serving as a comprehensive home theater guide to home theater systems, product reviews and home theater design.

Hope this info helps.

Dave
Yes, I am a magician. No I did not make my hare (hair) disappear... it just took early retirement.
hkmagic
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Colombia
108 Posts

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Thanks For the suggestions

The idea for this is for one part of my show

David the camera is this a Panasonic SDR S7
http://reviews.cnet.com/digital-camcorde......ncol;lst

I choose this for it's size and weight

The idea is to have the screen close to the table
ligth the table and focus in my hands and tabletop this way I force the espectatos to look my face directly and they can see the close up in the screen

David thanks for all your information

I keep listening
"May the Magic be with you"
Alan Munro
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Inner circle
Kentwood, Michigan, USA
5852 Posts

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I saw a rear projection setup, when I was performing at one of the major venues in town, last week. It was a set of trusses with a white fabric stretched across it, with the picture projected from the rear. This worked pretty well in full light!

I'm not sure who makes the system.
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