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Erkan Umut

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Posts posted by Erkan Umut

    WANTED - eclair ACL II SUPER16

    in Cine Marketplace

    Posted

    eclair ACL II SUPER16 converted camera with

    C-mount

    flat base (toggle switch)

    75fps heavy duty motor

    2pcs. 400ft magazines

    Angenieux or Kinoptik orientable (auto erect) viewfinder

    Battery and charger

    Handgrip and carrying handle

    Angenieux 15-150mm zoom (C-mount)

    all in one case

    (with or w/o video tap)

     

    US Shipment will be to an US address.

    (Other countries will be to Turkey)

    Payment via PayPal

    WANTED - BOLEX EL Super16

    in Cine Marketplace

    Posted · Edited by Erkan Umut

    Super16 BOLEX EL with

    two 400 ft Super16 mags with MM motor and film rollers

    two Super 16 spindle rollers (for camera)

    onboard battery and charger

    Kern Super16 zoom

     

    US Shipment will be to an US address.

    (Other countries will be to Turkey)

    Payment via PayPal

    Bolex EL battery RECELL

    in Bolex

    Posted

    Hi, anyone out there could explain my problem?? I've re-celled my 12V on board Bolex EL battery with the higher ampere 2500mAh(original was 800mAh)... I'm pretty sure the wire connection is right and nothing is loose. When I plugged it to my camera, the fuse blew.. checked my battery with voltage tester, it shown 12V... Anyone can tell me what's wrong with it?? :( Would it be the higher amp power? (which I don't think so..)... your help would be appreciated...

     

    Regards,

    Eric

    The voltage is important. Amperes show the battery capacity. There could be another problem. If everything would be ok, any fuse could be handle it. Ask to Bolex Switzerland for the fuse spec. Try it with another battery. Maybe a shortcircuit?

    CP16R Manual/ Repair Manual

    in 16mm

    Posted

    I'm not sure which version this one is, but I loaded it on my website for your convenience:

    ( The first two pages are poor scans but they improve)

     

    www.magicalrealismfilms.com/cp16-technical-300dpi.pdf

    That pdf is not complete and some important pages are not included.

    I have one complete in print, and need time to create a pdf.

    Canon SCOOPIC 16M Brochure

    in 16mm

    Posted

    Thanks!

     

    I love the translations of Japanese manuals from that time... they're always a little "off."

    Will,

    Usually the language in the manuals and brochures, etc. of the big enterprises in Japan is allright.

    But the smaller ones have a very interesting english usage, so you need an imagination to be able to understand... Also their manuals and brochures, etc. are poorly prepared even they have the Asian scent sometimes.

    But the stuff of the big ones like Canon, Eiki, Elmo, etc. are perfect.

    It depends on how much you spend and how many staff you have for this...

    Buying Eclair ACL or Aaton LTR?

    in 16mm

    Posted

    ACL works with 100' and 200' magazines. I'm not sure there are 400' ones.

     

    It's got a special kind of shutter : the mirror is not turning, it's oscillating at half the speed and you have a seperated shutter (175 °).

     

    Never heard of a video tap for it, though it might exist, I don't know, but you 'd more easily rent one for the LTR, for sure.

     

    Had one at school, don't remember how noisy it was (may be not that much) but I never saw any in production... Shot many shorts and TV series with aaton LTR and XTR, though.

    Please check the web page at http://www.erkanumut.com/?s=acl for more info.

    Thanks!

    CP16R Manual/ Repair Manual

    in 16mm

    Posted

    I'm not sure which version this one is, but I loaded it on my website for your convenience:

    ( The first two pages are poor scans but they improve)

     

    www.magicalrealismfilms.com/cp16-technical-300dpi.pdf

    Thanks!

    That one is the 58-page Interim Manual consists of some electrical and mechanical issues. Its not a complete service manual nor parts list. The one I told is a manual that consist of operating and maintenence instructions.

    CP16R Manual/ Repair Manual

    in 16mm

    Posted

    I'm in the same boat and would love to have a pdf of the cp16r repair manual. Thanks in advance!!

    I recently bought one original CP-16R Operation & Maintenance manual in print. I already have an addendum to this manual after they made the shutter 170° sent me by CP years ago.

    There might be good news for the community :)

    CP16R Manual/ Repair Manual

    in 16mm

    Posted

    I've got a tremendous amount of service manuals for the CP16-R. I haven't transferred them to file but would be willing to. Let me know what you're looking for.

    Thank you for your kind offer!

    CP-16R and GSMO Operation & Maintenance manuals, Service manuals in pdf will be great for the community.

    Best

    35mm format lens used in Super16 format

    in Lenses & Lens Accessories

    Posted

    I'm not sure what "F/50mm" means, I think you just mean a 50mm lens.

     

    Your rental house was wrong. 12mm and 6mm are different focal lengths. If you want a 6mm view on a Super-16 camera, you use a 6mm lens. If you put on a 12mm lens, you get a 12mm view. It doesn't matter whether it is a Super-16 or 35mm lens -- that only affects lens coverage, i.e. a Super-16 lens image will vignette on 35mm. The focal length is the focal length, only the view changes depending on the format.

     

    So if you want the view of a 12mm lens on a 35mm camera, you'd use a 6mm lens on a 16mm camera. The only difference between a 12mm lens made for 35mm work and a 12mm lens made for 16mm work is not the field of view, it's that the image from the lens made for 16mm might vignette on 35mm because it's not large enough.

     

    Maybe the rental house misunderstood what you were trying to achieve.

     

    Lens for 35mm format - Focal length: 12mm - Angle of View: 90°

    Lens for Super16 format - Focal length: 12mm - Angle of View: 64°

    When we compared the dimensions of these two formats, we see that the results are similar.

    I also noticed that the angle of view of the lenses for Regular 16mm format are about half of the ones for 35mm format in same focal length. It shows that 12mm focal length gives the similar results in both format...

    35mm format lens used in Super16 format

    in Lenses & Lens Accessories

    Posted

    I'm not sure what "F/50mm" means, I think you just mean a 50mm lens.

     

    So if you want the view of a 12mm lens on a 35mm camera, you'd use a 6mm lens on a 16mm camera. The only difference between a 12mm lens made for 35mm work and a 12mm lens made for 16mm work is not the field of view, it's that the image from the lens made for 16mm might vignette on 35mm because it's not large enough.

     

    Yes! F/50mm means 50mm focal length like T/4 stop.

     

    I've got the exact reply I want to hear... Thank you David! You're an invaluable contibutor... :D

    35mm format lens used in Super16 format

    in Lenses & Lens Accessories

    Posted

    We learned that F/50mm is the normal lens for 35mm format and F/25mm for 16mm format.

    So, in theory, F/25mm will be a wide angle lens for 35mm format and F/50mm will be tele lens for 16mm format.

     

    Recently, for my project shot in Super16, the rental house recommend me to use F/12mm lens made for 35mm format instead of F/6mm lens made for SUPER16 format.

    Because of above theory, I accepted it. But I surprised when I saw that F/12mm didn't give me the result of F/6mm of Super16 lens...

    What is the reason?

     

    Thank you for your explanations... :)

    Shutter Angles What They Do?

    in General Discussion

    Posted

    Yes point well taken but at 24fps and with a 180 degree shutter you'll find that if you test there are speeds that will skip at 180 but not at 90.

     

    In a lock down shot or a slow pan shot depending on the direction of the motion in the frame, the time of day,the relative motion of the moon and which way water swishes down the drain a 90 degree shutter will not stutter noticeably. :D

     

     

     

    I constantly see "strobing" during panning shots today, which never would have been tolerated 15 years ago. What was considered a mistake then is a now a cutting edge technique. So as always "the eye of the beholder or check writer" is the what matters.

    hmm... should I be a "sloppy' cinematographer or "old fashioned" today.

     

    Skipping (you say strobing) also related to the shutter position. If you expose the film by reflex mirror shutters at 45 degree position (not the opening angle!) btw the lens and aperture like in ARRIs, you gonna get more skipping while fast panning than the focal plane shutters like in Panaflexes or eclair ACL. Because the focal plane shutter is completely close to the aperture, so it means that it cuts the light at very narrow cone point (here we call the exposing light rays as a cone).

    Also, contrarily panning to direction of shutter rotation causes more skipping.

    focal plane shutter-eclair ACL

    in 16mm

    Posted · Edited by Erkan Umut

    When I considered the flicker-motion problem of 24P-DV camera before, I derived this diagram based on the knowledge of the center shutter.

    (DV camera has not almost inclination.)

    However, the diagram is exaggerated.

    Because the inclination of the diagram is bit part of the entire diagram, the existence of the effect which the Manual of Eclair says is not certain.

    Out of curiosity, I will observe the difference of image shot by ACL and ST after this.

    Thanks... I eagerly am waiting for your observation...

    By the way, my hobby is motion-picture technology.

    What is your field?

    I've been in Japan in 1995 for one month, and have visited the projector makers Tokiwa Tokyo, Eiki Osaka and Elmo Nagoya, and was the Agent for Tokiwa in Turkey. Japan is one of the makers of high quality precision cine machinery...

    Do you have have any manual and parts catalogue of the latest model eclair ACL?

    Pls. visit my web at http://www.erkanumut.com/acl.htm

    focal plane shutter-eclair ACL

    in 16mm

    Posted

    I think that it is similar to the difference between the center-shutter and focal-plane shutter of the still cameras.

    (Thought it's not the same at all.)

    Thank you for your reply and the diagram. What is the source of your diagram? Any publication or your experience?

    The light through the lens results a cone towards the aperture. The focal plane shutter is very close to the aperture, so it cuts the smallest part of this cone.

    I've seen similar things in Russian cine technology books I have.

    Any comments...

    focal plane shutter-eclair ACL

    in 16mm

    Posted

    This is a quote from eclair ACL manual:

     

    Contrary to reflex cameras in which the mirror mounted at 45' acts as a shutter, the ACL has a plane shutter of large diameter completely independant of the mirror (14). It is placed very close to the film plane with an opening of 175'. Cutting the image in the direction of the smallest dimension gives a perfect exposure, maximum definition and reduction of jerky effect on some panning shots.

     

    What does it mean "cutting the image in the direction of the smallest dimension"? Does it mean the shutter is placed very close to the aperture, or?

    Why do mirror shutters (placed at 45') cause the jerky effects while quick panning?

     

    Similar system applies to Panaflex cameras as far as I know. Does someone have the system diagram and info about the shutter and mirror of Panaflex cameras?

     

    Thank you for all... :)

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