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Thomas Dyrholm

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Posts posted by Thomas Dyrholm

  1. Thanks for your input Dom and Eric! Those frame grabs are really low quality so it's probably difficult to tell the difference (why is there a file size limit of only 300kb pr attached file in here???) but It seems like you get what I mean. I cant't remember the exact price I paid but I think it was around $500 so that was probably a fair price. 

     

    Eric, what is the name of the place in London you are referring to? And will they be able to service both the lens and the camera? The camera is by the way in pristine condition and works really well but would be nice to have it checked.

     

    And Dom, since you are saying that a lens like this shouldn't cost more than $600 and that a full overhaul would probably be half the prize of another lens, are we talking around $300 dollars for full overhaul? That's actually a lot less than what I thought. I will try and conctact Visual Products and hear what they think.

     

    And to everybody else: if you know of other places, preferably in EU, that will do the overhaul for a reasonable price please let me know.

  2. Hi!

    Some time ago I bought an Angenieux 9.5-57mm F1.6-2.2 for my Arri 16S 16mm camera. I was searching for a small and fast zoom lens and this lens seemed to be a perfect match for my needs. Moreover, I got the impression that it is a pretty sharp lens compared to other older Angenieux zooms from that era and that I had a pretty good reputation back then. Especially the later version called "HEIC" with better coatings. I'm pretty sure that the one I bought is one of those as it has a late serial number and rainbow colored reflections in the front element. Anyway. Did a small unscientific test and was somewhat disappointed with it's performance. Obviously I didn't expect it to be tack sharp wide open but it is really soft on all apertures below 4. Also it seems to be softer in the left side compared to the right side. I just have this feeling that something is wrong with it and that it might need to be serviced. Haven't ever had a lens serviced so I'm not sure how much the optical performance can be improved or if it's mainly mechanical functions thats possible to improve? Am I having unrealistically high expectations to this, old lens or do you think it would be possible to improve it's optical perfomance by getting it serviced? 

    The lens has no scratches or fungus, but a tiny little bit of internal dust. Shot the test on a FS7 in 2K center crop mode. 

  3. In overall good condition. No fungus or haze. Smooth iris. A singe small scratch on the front element, a little bit of internal dust and some clear spots that I cant figure out what is. Maybe some oil droplets or air bubbles in a glass element itself? Haven't noticed any visual effect of any of the above. The lens is located in Denmark but I will ship worldwide upon request. Asking 350 dollars or 300 euro.

    DSCF4969.jpg

  4. 2 hours ago, Tim Carroll said:

    Hey Thomas, nice camera. That is one of the last production Arriflex 16S cameras, with the APEX built-in light-metering system. Very cool. Is the serial number in the 19XXX range?

    Best, -Tim

    Thanks Tim. It took me a while to figure out exactly what model I had bought since I initially couldn't find any photos of other 16S with a light meter. I think it's called 16S/B-GS? The serial number is 18503 so yes it's probably one of the last ones. We bought it from the daughter of a former cameraman who worked on national danish television. The camera and the aluminium hardcase still has the television logo on them. Along with the camera, and the three Schneiders, the hardcase is packed with a lot of the original extras. A variable speed motor, an Angieneux 12-120mm zoom, periscope, mattebox, filters. Even an old and dry leather strap that I don't dare use with the camera even though it would look cool.

  5. On 1/5/2021 at 10:00 PM, Marco Leoncino said:

    I forgot to activate the automatic notifications, therefore I missed your replies, sorry ?

    However, I saw that camera but I did not buy that, because it was not in good conditions.

    I have found one Arriflex on Ebay with 3x lenses and already contacted  Georg Bogner from Camera Service International in Munich for a complete revision.  Since I am based in Germany, that would be the best option, according to what I have read around. He has replied to me already and gave me his availabilty to check the camera. 

    Hi Marco. Did you buy the camera and did you get it serviced by Georg Bogner? I have recently acquired an Arri 16S in pristine condition. I works properly but before using it on a project I would like to get et serviced. From my research it seems like Georg Bogner is the last person here in Europe who stills service these cameras!

  6. On 9/21/2020 at 4:02 AM, Cheryl Hess said:

    Hi Thomas and Teunkie

    Thomas--I was just wondering how you got along with your power supply?  I recently (like 2 days ago) acquired a big

    lot of 16mm gear including an Arri S and and Arri S/B (both working), a Tobin sync motor, the Tobin miliframe motor, the Arri variable motor, and the Arri fixed speed motor, two 400 foot magazines, torque motor.. (and a broken Beaulieu R16 and loads of glass).  Anyway was curious what you came up with for power.  I do like the idea of using V-mount batteries.  I have a few of those already and I need to test the Arri motors.  Both cameras worked with the Tobin motor--I was able to test that with a 12 volt 4-pin power supply that I borrowed from my LRH but i had no way of getting power to the 8v motors.  If I got that plate I would just need someone to build me a pair of cables--one to a 4 pin for the Tobin and one to the original Arri plug.  I have two of the AC cables so I don't have to hunt for the connectors. Anyway would love to hear about your experience building a power supply.

    Tuenkie--how can I tell if the torque motor has been modified to 12v?

    c

     

    Sorry - I totally forgot about this thread. We found a local guy who made us a v-mount battery plate. Basically it's just a v-mount plate and a voltage regulator set to 8.4 volt with a 4 pin output. It works perfectly. The light meter seems to be on point and the variable speed motor can run up to around 50fps.

    We still use the original 2 pin connector from the original power cable but it's pretty worn out and the solderings seems fragile. I came across a post on a facebook group regarding these connectors. Seems like there' a guy in Japan called Mr. Kosuge who makes them. Think his shop is called MUK Camera Service. Apparently they 3D print these connectors. I'm considering buying one to make a spare power cable as the original connector seems pretty fragile. 

    IMG_1164.jpg

    Skærmbillede 2021-04-13 kl. 10.03.06.jpg

  7. On 8/7/2020 at 6:35 PM, Teunkie Van Der Sluijs said:

    Hi Thomas, 

    I have exactly the same model (16S/B-GS) and been fashioning new power supplies for it the past couple of weeks.

    As regards motors, Arri themselves produced the Variable Speed Motor (probably the most common one still in use), running of 8.4 V battery power for 4-48 fps, and then two types of constant speed motors, known as Governor Controlled Motors, one for 24 fps, one for 25 fps. They also take 8.4 V, although technically, you could power them with 6V car batteries at the time too, for around 18 fps. 

    For the B-GS models in particular, Arri later produced a new model of Governor Controlled Motor, with a transistor (339 301) which ran at pretty reliable 24 fps, allowing for sound sync work. 

    At a later point, Arri produced their own crystal synch motor, mains powered. These require the 42 V transformer to output a particular type of motor. There's one or two on eBay right now, and I'm fixing up an old one (which seems intent on running on a rather unusual 26 fps). See one at https://www.ebay.co.uk/itm/ACCESSOIRES-pour-CAMERA-ARRIFLEX-16-mm-Moteur-Synchrone-42V-Bte-dalimentation8V/200768423141

    Tobin were third party suppliers and they're no longer around, although the motors still pop up every now and then on eBay and equivalent sites. They produced both variable (TM models) and constant speed motors, as well as crystal synch (TXM models). Jensen were another supplier, but a bit less common than Tobin, and harder to find these days. 

    The main thing to look out for is your power supply. Unless I'm wildly mistaken, the Jensen motors take 12 V, and if you're running the 400 ft mags with a torque motor not fitted for 12 V, you're at risk of ruining that torque motor.

    Actually I think the constant speed motor that came with the camera could be the new model you're talking about. Is there a way to determine wether it's the new or the old one? Mine has a small box on the side - could that be the transistor your'e talking about? I'm pretty sure that the camera itself is on of the last that left the factory - it's from the beginning of 1975 according to Arri. It has a built in light meter which seems to be pretty rare?

    Regarding power supplies I've been looking into different solutions. I found a pretty standard Tilta V-mount plate that has a 8V output. To me it seems to be the easiest and hopefully most reliable solution. Probably not the cheapest though. Also I believe the original motors were built for 8V and not 8.4V. I could be wrong but remember I read it somewhere in one of the original manuals for the camera. For the light meter I guess it's quite important that the voltage correct? 

     

  8. 1 hour ago, aapo lettinen said:

    They seem to pop up on ebay every now and then. There seems to be a jensen motor on ebay at the moment but no tobin ones. You can try the forum and also ask the Motion Picture Technology group on facebook, there is surely someone who has spare ones.

    Btw if you want to convert the constant speed or the varispeed motor to crystal sync sometime later I could be interested investigating the possibilities for that. I am sure that there is others who already have working solution for that but I am building a external box system which should be adaptable to the task

    I did notice the Jensen motor but I'm a bit hesitant to place a bid on it since it's probably very old and since it's so difficult to find any information about it. If someone here knows anything about it please tell us everything you know ?

    Right now I'm trying to find the simplest and most reliable solution for crystal sync but maybe I will look into the possibility of converting the existing motors to crystal sync in the future if it turns out to be too expensive.

     

  9. Hi

    Recently I bought an Arriflex 16S/B G/S in very beautiful condition (will probably make another post about it in the near future). It came in the original box with Schneider primes, Angieneux zoom and all the good stuff. It also came with the original constant speed motor and the variable speed motor. I'm now searching for a crystal sync motor preferably the the Tobin TXM-22A. From what I've read it seems like these are now discontinued? Therefore I would like to hear if there are someone here who want's to sell theirs?

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