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Livio Colombo

Basic Member
  • Posts

    5
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Profile Information

  • Occupation
    Other
  • Location
    Milano
  • My Gear
    Lot of super8 cameras, a Bolex H16
  1. Thanks Simon but I'm afraid there's no screws where your yellow arrows point (see pic). Unfortunately the really reliable "experienced persons" here around (Milano) are getting rarer: Franco Pezzoli (also a Bolex authorized repairman) was the last, but he retired, and we really miss him . You're right, I'm italian indeed, but is the first time I heard using the word "presa" for "cinepresa".
  2. Thanks Simon but can you tell which are the right ones? I'm afraid I can't understand what you mean with this italian phrase. Literally it means something like: "In case of an emergency, I'd take the power socket"... 8-|
  3. Hallo to everybody. Dom, I read this old post of yours. I have the some problem: very dark and very dirty groundglass. I followed your instructions, but after undoing the 'similar screw', under 'that plate, parallel to the gate', which I think they are the 2 in the red circles in the picture, the front doesn't come out. Am I undoing the wrong screws? Another problem is on the 6,5-52 Angenieux zoom: the focusing ring is quite wobbling: any way to fix it? Many thanks Livio
  4. As far as I know there are no ISO standards for motion picture film speed, except for non-professional colour reversal camera films, that are treated in ISO 2240 (Photography — Colour reversal camera films — Determination of ISO speed), which in the 'scope' section says: 'It also applies to 8 mm and 16 mm motion-picture films used in non-professional applications. This International Standard is not applicable to professional motion-picture films regardless of their applications'. The standard for determining film speed for colour negative film is ISO 5800 (Photography — Colour negative films for still photography — Determination of ISO speed), which in the 'scope' section says: 'does not apply to colour negative films for motion-picture and aerial photography or for making intermediate negatives', and for black-and-white negative films is ISO 6 (Photography — Black-and-white pictorial still camera negative film/process systems — Determination of ISO speed), which in the 'scope' section says: 'does not apply to motion picture, aerial photography, graphic arts, radiographic or micrographic applications, nor to negatives produced in diffusion transfer systems'. And AFAIK there's also no ISO standard for black and white reversal. So that's why is correct to speak about EI in cinematography, and not about ISO or ASA (which was the old american standard). ASA speed is numerically speaking, basically the same as ISO speed: only the way of determining it changed a little. Simply speaking, when a stock is rated EI 200, I set my lightmeter to ASA 200. It is because mine it's an old one: if it was newer it would have an ISO scale, and I'd set to ISO 200/24°. And since ISO 2240 applies for non-professional colour reversal, here's why on old super8 K40 cartridge you could read ASA speed (and maybe, on more recent Kodachrome also ISO speed - who remembers it?). On modern Super8 E100 speed is rated in EI, probably because today is considered a 'professional' stock. You can search (and read) ISO standards here: https://www.iso.org/obp/ui/
  5. Hallo cinematographers. I have been following this forum for a while, but this is my first post here. I found a Bolex H16 REX3 that works flawlessly, but it came with a Rex-O-Fader installed which I want to get rid of, but it seems I'm not able to. I proceeded following the installing instructions (in reverse) by unscrewing the locking screw and the rewind handle, but the Rex-O-Fader doesn't come out, since is kept in place by the small cog or sprocket where the rewind handle is screwed in. From what I can understand by watching at pictures on the web (Rex-O-Fader instructions don't help) the cog should stay screwed on the rewind handle (which seems it is a special handle and not the normal one). In my case instead, the cog stays screwed on the rewind spindle, where it seems is stuck. After removing the Rex-O-Fader cover (by removing the four small screws) I unsuccessfully tried to unscrew the cog (turning clockwise, of course), also with the aid of pliers, but of course I didn't dare to apply too much force, fearing to damage the cog itself or the motor spring. Anybody can help me? thanks Livio
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