chuck colburn

Okay, so I guess oily iris blades are normal for cine lenses. I never noticed before. I was aware that they could be an issue on still picture lenses so I guess that is what I was thinking. As long as it doesn't affect my image I don't care. I was afraid some sort of reflection could occur off the back of the iris blades.

 

Thanks for the response,

 

Jon

Oily iris leaves are not normal for ANY lens. If the lubricant begins to dry up or is cold enough the individual leaves can stick to each other and can result in them kinking up and the destruction of the whole assembly. I highly recommend that you have the lens serviced as some lenses have no parts availble for them and would require parts from another lens for repair.

Chuck

Make Offer @ moetiki@mac.com.

Looks like a .3 no a 3

Well, if you really wanted to use this meter the easiest thing would be to draft a table that correspond your f-stops to lux at various film speeds and tape it to the back of it. What you have listed will work with some minor corrections for ASA 50. All that being said I think you?re much better off investing in a Sekonic 398. I doubt it would be any more expensive and I?m sure it would be infinitely easier.

Absolutly right.

Always been a favorite of mine. Needs no battery and serves both as an incident and reflected light reading unit.

Uhh Nick,

I think you have to take into account the film speed (ASA) somewhere in there.

Oh yeah and the shutter speed too.

I remember those 115v units . I think they came with a transformer box.

Like this unit.

http://cgi.ebay.com/Arri-Sync-motor-for-16...1QQcmdZViewItem

Most times the problem with any breech lock type lens mount is the thickness of the ears themselves. This is true for any of them be it Arri, Panavision or Mitchell etc. I never ran into a camera side that was wrong. Don't know about that video camera though.

The same is true for the Arri S/B lens mounts. The position of the ears and their deminsions is very critical.

Title says it all, I want a constant speed 24 fps motor for my Arri s. I'm tired of trying to keep speed in mind on my shoots. I would like to spend $100 including shipping to SF. If you have a crystal I would pay upwards of $400.

Let me know what you got!

kirk

Here's one.

http://cgi.ebay.com/Arri-Arriflex-ST-Camer...1QQcmdZViewItem

For the optical quality you can look up reviews of the Sigma 18-50mm F2.8 zoom, that's the glass they are taking.

 

Of course the build quality has an impact on the look too. Quality control is very important for optics, you can have the best glass in the world, if the mechanics are bad and do not withstand the stress of filmmaking you will soon have focus and other problems.

All true. And even more important is the optical tech who is assembling the glass into the new housings. Lots of variables in zooming optics.

ROSEBUD

That's why it's best not to mount the spinning mirror at a 45 degree angle to the film plane.

You can also get the Elites from BFC in Brussels and JDC in the UK (under the name Xtal Express). JDC had the lenses rehoused and changed some of the focal lenghts ever so slightly (the 14mm became a 14.5mm for instance)

Hey Max,

Whats that BFC stand for. Stateside it was the Blimped Fox Camera (65mm if I recall) sometimes also refered to as the Big F**king Camera. lol

Chuck

Panavision gives you a little dropper bottle of oil and a thingie of silicone when you prep the camera. I don't think very many get returned, if you catch my drift. ;)

Hi Chris,

What is the silicon used on?

thanks,

Chuck

Thanks for your tips. There were only four visible screws to be removed, but it won't come apart without the Lens being removed. I can tell by looking at it that the Lens was the last component to be attached. The front shell clearly pulls out frontwards which requires that the Lens be removed first. I think that the Lens could be a reverse thread, but I'm not going to turn it too hard without knowing for sure. I can only hope that there isn't some sort of "self-locking mechanism" or glue which would make it impossible to remove. I hope that they wouldn't have been that dumb, but, having done work on cars, I know how stupid these "industrial designers" can be.

Do you think that Pro8mm would be willing to offer some free advice on this matter, or is it a better bet that they don't bother cleaning the internal Lens on the Cameras they refurbish?

 

Chuck, did you work on S8 Cameras? How does the Lens come off?

No 8mm cameras and as few 16mm as I could get away with. lol

So there is no obvious retainer ring on back of the front of the camera? Mayby the lens comeas apart to expose mounting screws in the rear section. I don't know.

Good luck

I serviced, repaired and built motion picture cameras and lenses for thirty years and never once ran into a left hand thread.

Or buy a motorcycle... it's legal to split lanes (or use to be anyways) in California. Legal but not always safe. lol

You are kidding about doing a film shoot with out testing the camera... aren't you?

That's a real good way to hamper your career.

Arri 765. The film is all dolly and crane, no handheld or steadicam. It's mostly wider shots and long takes. The format is perfect for what I want to do. It's really just a question of fitting 65mm it into the budget.

Cool. Be sure to get a tripod and head too.

Jim

 

Now that the camera is released and people can make up their own minds by shooting their own tests with it, I think we can indeed move past all that boring conjecture and numbers and simply let the images speak for themselves. I am obviously very curious to see some projected 4K footage as well, preferably a comparison test with 35mm, which is the standard that I am familiar with.

 

As for shooting on the Red myself, you'll have to forgive me, at least for the time being, as I am currently looking to shoot my next film in 65mm.

What camera body are you using?

Hi all,

is it possible to mark my own 185 markings on my academy arri 2b groundglass?

If so whats the best method

best

rob spence

Take the ground glass out and set it on a surface plate. Now mount a very sharp #4H drafting pincel to a variable heigth gauge. Find the center of the ground glass with the tip of the pencil. Now raise the heigth gauge one half of the heigth of a 1:85 frame and slide the gauge along the surface of the ground glass. Repeat for the lower line.

I'll second that it's Zeiss/Cosina.

 

Hit SLR lenses:

 

http://www.zeiss.com/photo

 

Whoa! Also in both Pentax mounts.

 

Which way does the focus ring turn?

Leo,

They rotate anti cinewise, like most still camera lenses do.

Chuck

Most all SLRs in the last twenty years or so have decent mounts. Nikon seems to have held the cross-over-to-cinema mount dominance for thirty to forty years. Nikon lenses are still quite obtainable used. They dumped their new lens manufacturing around a year ago. Leica is making new lenses in a Nikon mount, though.

Hi Paul,

Are you sure that Leica is making lenses in Nikon mount? Haven't seen anything on them yet. I do know that Zeiss with Cosina is offering a line of lenses in Nikon mount.

Chuck

I'm not a cameraman...but I use to service, overhaul and build them along with the lenses. Every place I went to work at there was an old timer who after he got use to this lanky long haired hippy would take me under his wing. If not for those guys I would have not enjoyed the career that I did. I learned from my father that if it was something I didn't know about to shutup and listen and show respect to those who did.

So I'll tell anybody what I do know if it will help them in some small way.

Not everyone can afford a $45,000 Angenieux or Cooke zoom lens.

is the aaton mount the same as the arri bayonet mount?? cus on the inventory list of the aaton ltr it reads

aaton/arri mount.

Hello Diego,

I think that is an Arii standard/B mount adapter to Aaton universal mount. The Aaton mount was 40mm flange focal depth and the Arri mount is 52mm ffd which gave enough leeway to make an adapter to mount the Arri standard or byonet mounts to it. The PL breech lock mount is to large in physical demension to work in that way.

Chuck