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January 7th, 2002, 02:57 PM
#11
#Pedro
Guest
Matt:
I don?t think that there are S16 highspeed cameras, but I am not shure.
I know, that with double perforated standard 16 mm, there are framerates up to 500 fps possible, with MECHANICAL intermitting film transport. For higher framerates in special cameras, optical prism systems are employed and the film runs continuously.
Pedro
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January 7th, 2002, 03:23 PM
#12
crimsonson
Guest
Arri makes high speed S16. The SR III series. The old ones where called HighSpeed. The modern version are called Advance. Up to 150fps. I think Mitchell also made some.
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January 7th, 2002, 07:29 PM
#13
jukkasil
Guest
According to great "Filmkameras"-book from Atoll Medien:
"A small number of Leicina Specials were designed as high-speed cameras for analytical work. These models can reach speeds of 90 to 130 fps thus secuiring detailed views of, for instance, birds in flight".
I want that one!
Regards
Jukka Sillanpaa
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January 8th, 2002, 01:20 AM
#14
Mikael Sundström
Guest
<BLOCKQUOTE><font size="1" face="Courier, Arial">quote:</font><HR>you cannot simply increase the supply voltage and praying that the speed may increase accordingly!!!! Camera DC motores are REGULATED electronically, that means, that the circuit compares a target framerate with a measured, existing framerate, coming from a tacho generator. This compensates to fresh or to weak batteries or changing loads. Increasing the supply voltage would change NOTHING - until that certain point where the circuit burns. Then your camera is only trash.
For seriously increasing the actual speed, the target value of the regulation circuit must be increased accordingly. And for that, knowledge about how the circuit is designed is undispensable.
Pedro<HR></BLOCKQUOTE>
Hm.. Good to know. I didn?t know that.
Looks like 70's technology was more advanced than I first thought.
Mikael
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Mikael Sundstr?m
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January 8th, 2002, 01:28 AM
#15
Mikael Sundström
Guest
Well, i thought they where regulated a little rough or something using just resistors or something and going somewhere around 24fps when 7.2v put in... i thought that when the highest speed was selected it would only be a matter of increasing the volts, but, oh well ... how wrong. didn?t know that they acctually had regulators...
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Mikael Sundstr?m
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January 8th, 2002, 05:41 AM
#16
Matt Pacini
Guest
<BLOCKQUOTE><font size="1" face="Courier, Arial">quote:</font><HR>Originally posted by Mikael Sundstr?m:
Hm.. Good to know. I didn?t know that.
Looks like 70's technology was more advanced than I first thought.
Mikael
<HR></BLOCKQUOTE>
Yeah, remember, we went to the moon in 1969.
So electronics was fairly advanced, I'm pretty sure!
Matt Pacini
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