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  • Hey all, just changed over the backend after 15 years I figured time to give it a bit of an update, its probably gonna be a bit weird for most of you and i am sure there is a few bugs to work out but it should kinda work the same as before... hopefully :)

Bausch&Lomb CinemaScope Baltars.

Don't know how I missed this adventure, but really fun going through this thread!

David
 
Ilya O. said:
Oh my God! Björn, that aluminum particles are real pain in the ass to clean away:-(

You are like me some years ago, I ruined a couple of heavy lomo zooms (they were so rusty and with water so very hard to dismantle, every ring was like glued) before I learned a skill :-)

In your case the hardest part would be to take out that huge glass pieces without damage and please believe me it IS hard! The risk of edge splitting are super high, 90%, man, you'd better NOT do it yourself!!!
If you still going your own way, better try to reach the glass surface from the back, do not try to take out the glass from the front.
Click to expand...


Aha,
Yes. I´m not too worried about the dust it´s pretty much like a big open jar in there and if the sliding front part comes off it´s just to clean the inside of the front element, which was needed any how and then blow some air to get out the rest of the dust. But yes I will not pull the glas of my self. However the one guy that knows how to do these things is out of town, in Thailand and not sure when he comes home. He normally use a lens key and a big suction cup thingy, he simply heat up the housing with a torch, then tighten the treads on the suction cup and normally, then the glas pops out with no fuss. But it seams like there would be an easier way like unmounting the whole front with the sled and everything, tried all visible screws and such but the thing stays put. :)
 
currently this is my favorite thread going.. Björn you are a lucky man..
 
Tim Daust said:
currently this is my favorite thread going.. Björn you are a lucky man..
Click to expand...

I could not think of any other lenses that I would rather have. And yes, I was lucky until today... but today I went from lucky to super lucky as I just got 2 more on the hook. Yesterday was my birthday but today was better. :=)

This 40mm and 100mm is coming my way.


https://flic.kr/p/STvHT1

PastedGraphic-2 by Björn Benckert, on Flickr


I read here some where that there is also a 135mm if you see it please let me know.
 
Holy moley! You have almost a complete set ;-) Congratulations. That's awesome.

Nick
 
Nick Gardner said:
Holy moley! You have almost a complete set ;-) Congratulations. That's awesome.

Nick
Click to expand...

Yes I thought the guy was joking when he said he had two more. I´m drawing on the mount at the moment and think of doing something similar like the cerlere lenses with a removable delerin threaded back ring so I can have nets behind the lenses and also make little ND´s and other filters to put in there.
 
Hey Björn, they have one of these lenses at the ASC Clubhouse (I believe it's a 40mm or 50mm), together with one of the early Panavision Autopanatar anamorphics, which is similar in size and shape.
 
Ignacio Aguilar said:
Hey Björn, they have one of these lenses at the ASC Clubhouse (I believe it's a 40mm or 50mm), together with one of the early Panavision Autopanatar anamorphics, which is similar in size and shape.
Click to expand...

Cool,
I now got both the 40mm and the 50mm. Or the 40mm is on its way here. So the only one missing is the 135mm but I have not seen such even on picture so not sure it exists.
 
Ignacio Aguilar said:
Hey Björn, they have one of these lenses at the ASC Clubhouse (I believe it's a 40mm or 50mm), together with one of the early Panavision Autopanatar anamorphics, which is similar in size and shape.
Click to expand...

The ASC has a 40mm on display...
 
Sold my bitcoins and added four more to the basket. Hoping to gather two complete sets. Just need another 50mm and another 100mm. So please let me know if you see such for sale.

What I got so far:
2x35mm
2x40mm
50mm
2x75mm
100mm.
 
Only these three out of the total 8 reached home so far the rest is slowly trickling across the atlantic and trough customs. Got one of the 40mm today and its was in really good shape. Next week I got time with my guy in the machine shop so monday morning 7am im heading over there to make the pl mounts for them.

33633721135_25886a647f_b.jpg
[/url]40,50 &75mm by Björn Benckert, on Flickr[/IMG]
 
pretty much went from cool to coolest real quick
 
our crazy beloved Björn!

guys, smbd stop him plz ahhahahh

Björn, any videos from these babies?!
 
Spent the whole day in the metal shop... Remouting these babies is not not for those that like to swim in the shallow end. This is for those that like the highdiveboard doing back flips and stuff. But with some fiddle it will work not done with the first lens yet but got it trough the needle hole and out on the other side. I ended quite a few lenses and for a while I though this would be one of those held my breath quite a few times in the process and just hoped the wind would blow our way and it really did. So now the 50 which is the beast of them all is ready.

As some here tried to tell me it´s not just to make a new mount the housing needs to be quite significantly altered and the PL mount flange needs to move a good 5mm up the sleeve compared to the original and also the back´s needs to be shaved right around the actual optics on the wides. So yes no easy swimming at all. :)

Only have the less critical pars to finnish now like the actual PL flange, lens suport, focus gears and back filter holder. But that i´s not involving any crucial milling of the actual lens. So first 50mm is done and now I got 7 more to go. :)

Here is todays behind the scenes.

Untitled by Björn Benckert, on Flickr

Untitled by Björn Benckert, on Flickr

Untitled by Björn Benckert, on Flickr


This when it spinns... does not feel right at all, lol.


Untitled by Björn Benckert, on Flickr




Untitled by Björn Benckert, on Flickr

The raw cut: Altered flange, threaded and shortened back and milled away housing to make room for the PL camera mount.
On the threaded bit there will be a PL flange and a cylinder with threaded interior fitted for pl and also a delerin back / filter holder. So the flange here is what the pl flange will be shimmed against.

(The new magnesium RED mount need to loose two of those little wings it has for tightning. As if not they would intersect with the lens body. But those are easy to take on off and are not really needed any way, or two is enough. I have not tested on alexa just yet but I think it would clear. form looking at this image:

http://cdn.cvp.com/images/products/altimage/07 04 20151428400631PL-LDS-mount-with-L-Bus.jpg
 
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