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Author
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Topic: Nizo 801 film jumping/jittery
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Dominique De Bast
Film God
Posts: 4486
From: Brussels, Belgium
Registered: Jun 2013
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posted September 04, 2013 07:30 AM
I don't garantee that what follows is in academic English. Before looking for a technical problem, as you said that it happens only on specific scenes, it could be a shooting problem. If you use the zoom on the maximum without keeping your cam steady, your image is not steady neither. You can (if you cannot keep your camera steady) improve this when shooting someting without movment (like a landscape, the see and so on) by filming at a higher speed than the other scenes, for example, you shoot at 18fps and then you shoot something with your zoom at the maximum at 24 fps. Of course, the 24 fps scene will appear a little bit slower on the screen which will soften the lack of steadiness. To make it natural, don't shoot caracters or things with a movment easily noticeable.
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Dominique
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Maurizio Di Cintio
Jedi Master Film Handler
Posts: 977
From: Ortona, Italy
Registered: Jan 2004
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posted September 09, 2013 04:00 AM
I do not think Henry's post refers to unsteady images due to excess use of telephoto lens: an experienced eye can easily discern between an unsteady hand and unsteady film transport; from what I read, it is a problem of film transport, and speaking out of experience, I have to say it is partly due to no lubrication: older filmmakers will recall that when tearing open the foil package of a sealed K40 catridge, the presence of some sort of wetness on the film was apparent through the film opening(s): that was lube which I haven't seen anymore since the early 2000's, still in the Kodachrome era. Today, with film stocks not specifically conceived for cinematoraphy but for still images AND being a thicker film stock, depending on the overall conditions of a camera, jitter may result from these cartridges, but that does not necessarily mean a camera is faulty: my Nizo Professional shows the same symptoms when used with Ektachrome 100 D, but transport is flawless when using B/W TRI-X, which is thinner. According to me, current color filmstocks are critical: succesful, flawless transport largely depends on the way the shutter/claw/motor assembly is designed and maintained: The Nizo system is very good from the point of view of silence, especially the "sound" models (but also the silent ones are remarkable, albeit to a lesser extent); unfortunately they have a downside in that their torque (the strenght the claw pulls down the film with) is somewhat lower than in even some lower-end models, which is paradoxical, but 40 years ago, when these cameras were designed, nobody could foresee these camera would last so long, let alone having to cope with these stocks.
WIttner sells a product called "Gate Lube" that I have bought but still have to try, which should fix the problem. I'll try it the next time I use Ekta 100 on my Nizo and I'll let you know the results.
Henry, try using your 801 with a B/W cartridge just to counter check if it works properly.
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Maurizio
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