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Author Topic: Cinemeccanica Vic-8 Loop Videos Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 02-17-2016 04:04 PM                     Yes, this was to show proper threading for H-8, but have any of you ever used a variable high speed strobe to slow down the motion of 70mm Estar going through a projector. There is movement in loops and oscillations set up that the eye simply CAN NOT detect. I have two different strobes I have used over the years. One is a General Radio and they can be had for way less than the price here is you search around. General Radio1531 And the other is a Cinematography Electronics Crystal Pistol. This one has a TXCO time base and is generally used to chech film camera speed, but it is variable via thumbwheel settings, and can also be used on projectors Crystal Pistol Mark  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 02-19-2016 10:45 AM                     we used a strobe on the Imax alignement all the time  |  IP: Logged Brad Miller Administrator Posts: 17775 From: Plano, TX (36.2 miles NW of Rockwall) Registered: May 99 posted 02-19-2016 10:52 AM                     In many circumstances, a finger is more than adequate for checking loop slapping (unless you have really big fingers of course). While not particularly easy to use a finger for a V8, a finger works fine for laying up against the bottom side of an intermittent in a typical machine like a Century. If you don't feel it, then the loop's movement isn't playing an optical illusion on you and it isn't slapping further such to hit the intermittent. On the V8 for H8 as shown in another thread though, it was blatantly obvious with the naked eye.  |  IP: Logged

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