Jump to content


Photo

Carl Zeiss Tevidon Primes


  • Please log in to reply
30 replies to this topic

#21 Anthony Miller

Anthony Miller

    New

  • Basic Members
  • Pip
  • 9 posts
  • Student

Posted 05 March 2008 - 02:52 PM

Hi Everyone,

I just bought a set of 3 prime Carl Zeiss Tevidon on Ebay. A 10mm f2, a 25mm f1.4 and a 50mm f1.8.

http://cgi.ebay.co.u...e...p;rd=1&rd=1


I've been reading up on how the Tevidon 10mm was constructed by Nasa for star gazing and possesses very sharp with 0 distortion. But can anyone tell me more about them?

Also, on the item description it mentions to have a "movie Bayonet" I tried contacting the seller and ask if he could be more specific about it. From what I take it, there are various different bayonet mounts. I own a bolex ebm with it's bayonet mount, and considering the fact this transaction from Poland goes through, could you tell from the pictures if the lenses fit ?

I'm fairly new to 16mm so any clarifications would be greatly appreciated!

Best Regards

SMR


********************************************************************************
************************************
Salvador:

The 10mm went up with NASA to map the stars, minus distortion, for measurement and calculation purposes. Zero practical distortion. Said to cost approx. 5 to 8 thousand then. Front element heavier than steel, costlier than gold of same weight.

Aware of 10mm, 16, 25, 35, 50, 70, 100 lengths, and two zooms; 18-90, 15-150. Covers 1". I have all these; have heard of a 40.

Came out in at least two issues; original fat barrel, heavy solid brass/steel, and later, smaller, thinner aluminum housing'ed version.

Earliest versions, about 1978? New still available from Germany and environs.

Originally produced for East German social observation cameras requiring highest quality image. Current Zeiss and Leitz primes applying same materials, etc..

Google Docter Optics, download Tevidon brochure. New company still producing part of the line. Hyper quality, resolution, etc..
  • 0

#22 Anthony Miller

Anthony Miller

    New

  • Basic Members
  • Pip
  • 9 posts
  • Student

Posted 05 March 2008 - 02:58 PM

Hi Everyone,

I just bought a set of 3 prime Carl Zeiss Tevidon on Ebay. A 10mm f2, a 25mm f1.4 and a 50mm f1.8.

http://cgi.ebay.co.u...e...p;rd=1&rd=1


I've been reading up on how the Tevidon 10mm was constructed by Nasa for star gazing and possesses very sharp with 0 distortion. But can anyone tell me more about them?

Also, on the item description it mentions to have a "movie Bayonet" I tried contacting the seller and ask if he could be more specific about it. From what I take it, there are various different bayonet mounts. I own a bolex ebm with it's bayonet mount, and considering the fact this transaction from Poland goes through, could you tell from the pictures if the lenses fit ?

I'm fairly new to 16mm so any clarifications would be greatly appreciated!

Best Regards

SMR


Oh, and the bayonet on the lens, for the robotic cameras, comes off with the same three screws that put on the C mount. Only one screw pattern used. Back focus maintained. Easy, three minutes, done it many times. Buy bayonet lenses, AND C mount, and change as needed.
  • 0

#23 Charles MacDonald

Charles MacDonald
  • Sustaining Members
  • 1157 posts
  • Other
  • Stittsville Ontario Canada

Posted 05 March 2008 - 08:54 PM

The 10mm went up with NASA to map the stars, minus distortion, for measurement and calculation purposes.resolution, etc..


HI, 1) we use our real names on this forum. Seems more personal that way, please adjust your account.

2) do you have a reference for that statment, I have a bit of concern that NASA would be dealing with the East German Photoindustry, unless the mission in question was in cooperation with the Russians or the FSU.
  • 0

#24 Bert Smith

Bert Smith
  • Basic Members
  • PipPip
  • 40 posts
  • Director

Posted 12 March 2008 - 01:01 AM

i cant wait to see some lens tests with these things. anybody going to shoot them with a resolution chart in the near future?




Me me me me me!!!!

:-)


As mentioned, I have the 10mm, the 16mm, and the 25mm. On this same forum, I have heard it mentioned that these Tevidons have extreme resolution. I would be very very surprised at that, if it is the case, but my resolution charts tests will prove this soon enough. There was another lens manufacturer I was looking into, called Navitar, which makes "high quality" industrial lenses. The main appeal for me, is that a few of their most usable Super16-covering focal lengths were......f0.95!!!! Oh how I was thrilled! I immediately began writing them, and talking to thier techs, and having them research what the lp/mm was on those several f0.95 lenses (if I recall, the lengths on those were 12mm, 16mm, and 25mm). I was very hopefull. I didnt think they would reach the otherworldly 200 lp/mm resolution of the high-end Zeiss and Cooke optics, but anything even getting close to that would still be usable. Hell, even half of that would be acceptable.

Finally I got an answer. Get ready:

20 lp/mm

:-(




Thats pretty pathetic, isnt it? And these guys are rather respected too. But resolutions of 20 lp/mm are more then good enough for industrial applications. So, knowing this, I would find it highly unlikely that my Zeiss Tevidons are significantly higher in resolution. Why would they have designed them as such? There just doesnt seem to be any benefit to the manufacturer to over-design an industrial lens, since that would be wasted time, resources, and ultimately, profit.

I am made hopefull by what I have been hearing though. And hopefully my Tevidons beat that 20 lp/mm number by quite a bit.

I would be very curious to hear if there is any sort of guidline regarding what is "acceptable" for HD, in terms of lp/mm. Or what would be acceptable for blow-up to 35mm. Are there any such "minimum requirement" rules of thumb?

And again, I will be shouting quite loudly after I do these resolution tests on the Tevidons. But, I honestly am not sure how to do them yet. The instructions for the resolution chart are as long as War&Peace. There are many considerations to getting a reliable and accurate lp/mm reading using this chart, including aperture, distance from chart, film grain, edge/center, illumination, secondary tests, ect ect. I find it very easy to believe that doing everything according to the book, you will get two different numbers out of two tests. So I will do my best to eliminate all variables. If anyone has any advice, please cast it down.

Thanks
  • 0

#25 Anthony Miller

Anthony Miller

    New

  • Basic Members
  • Pip
  • 9 posts
  • Student

Posted 14 March 2008 - 05:09 PM

Me me me me me!!!!

:-)


As mentioned, I have the 10mm, the 16mm, and the 25mm. On this same forum, I have heard it mentioned that these Tevidons have extreme resolution. I would be very very surprised at that, if it is the case, but my resolution charts tests will prove this soon enough. There was another lens manufacturer I was looking into, called Navitar, which makes "high quality" industrial lenses. The main appeal for me, is that a few of their most usable Super16-covering focal lengths were......f0.95!!!! Oh how I was thrilled! I immediately began writing them, and talking to thier techs, and having them research what the lp/mm was on those several f0.95 lenses (if I recall, the lengths on those were 12mm, 16mm, and 25mm). I was very hopefull. I didnt think they would reach the otherworldly 200 lp/mm resolution of the high-end Zeiss and Cooke optics, but anything even getting close to that would still be usable. Hell, even half of that would be acceptable.

Finally I got an answer. Get ready:

20 lp/mm

:-(




Thats pretty pathetic, isnt it? And these guys are rather respected too. But resolutions of 20 lp/mm are more then good enough for industrial applications. So, knowing this, I would find it highly unlikely that my Zeiss Tevidons are significantly higher in resolution. Why would they have designed them as such? There just doesnt seem to be any benefit to the manufacturer to over-design an industrial lens, since that would be wasted time, resources, and ultimately, profit.

I am made hopefull by what I have been hearing though. And hopefully my Tevidons beat that 20 lp/mm number by quite a bit.

I would be very curious to hear if there is any sort of guidline regarding what is "acceptable" for HD, in terms of lp/mm. Or what would be acceptable for blow-up to 35mm. Are there any such "minimum requirement" rules of thumb?

And again, I will be shouting quite loudly after I do these resolution tests on the Tevidons. But, I honestly am not sure how to do them yet. The instructions for the resolution chart are as long as War&Peace. There are many considerations to getting a reliable and accurate lp/mm reading using this chart, including aperture, distance from chart, film grain, edge/center, illumination, secondary tests, ect ect. I find it very easy to believe that doing everything according to the book, you will get two different numbers out of two tests. So I will do my best to eliminate all variables. If anyone has any advice, please cast it down.

Thanks


  • 0

#26 Leo Anthony Vale

Leo Anthony Vale
  • Basic Members
  • PipPipPipPip
  • 2010 posts
  • Other
  • Pittsburgh PA

Posted 15 March 2008 - 01:21 PM

There was another lens manufacturer I was looking into, called Navitar, which makes "high quality" industrial lenses. The main appeal for me, is that a few of their most usable Super16-covering focal lengths were......f0.95!!!! Oh how I was thrilled! I immediately began writing them, and talking to thier techs, and having them research what the lp/mm was on those several f0.95 lenses


Finally I got an answer. Get ready:

20 lp/mm


You're talking about f/0.95 lens. There's a price to be paid for that wide of an aperture.

You'll find that usually an f/1.4 will be less sharp wide open than an f/2 wide open from the same manufacturer.

So an f/0.95...
  • 0

#27 kevin jackman

kevin jackman
  • Basic Members
  • PipPipPipPip
  • 350 posts
  • Other

Posted 16 March 2008 - 01:13 PM

hey folks. i just got an email from the dr optics rep. i asked how many lines per mm the current tevidons yield. his response:

Please refer to our attached brochure (R = 20 and 40 Lp/mm).

having said that i just found some cheap, and i mean cheap, machine vision c mount lenses that claim to be 100 lp/mm

ill let you all know if anybody is interested
  • 0

#28 Charles MacDonald

Charles MacDonald
  • Sustaining Members
  • 1157 posts
  • Other
  • Stittsville Ontario Canada

Posted 16 March 2008 - 08:47 PM

having said that i just found some cheap, and i mean cheap, machine vision c mount lenses that claim to be 100 lp/mm

Always interested in good inexpensive modern lenses that will work with the fiomo. One thing I have managed to do is end up with a few lenes designed for video camera that don't have either a focusing mount, or sometimes a diaphram. With the small image on a LCD camera, they can get away with limited depth of field, and can adjust exposure by varying the sensitivity of the sensor.

OF course I also have a pristine Sony video camera with a nice looking lens that entends way back past the mount flange as it just nicely cleared a 2/3 inch vidicon. Vidicons don't need shutters.
  • 0

#29 kevin jackman

kevin jackman
  • Basic Members
  • PipPipPipPip
  • 350 posts
  • Other

Posted 16 March 2008 - 09:21 PM

Always interested in good inexpensive modern lenses that will work with the fiomo. One thing I have managed to do is end up with a few lenes designed for video camera that don't have either a focusing mount, or sometimes a diaphram. With the small image on a LCD camera, they can get away with limited depth of field, and can adjust exposure by varying the sensitivity of the sensor.

OF course I also have a pristine Sony video camera with a nice looking lens that entends way back past the mount flange as it just nicely cleared a 2/3 inch vidicon. Vidicons don't need shutters.


yeah im not interested in the lenses without focus or irises. im thinking the modern schneider machine vision lenses may be the ones to have. ill be finding out details on their products soon. unfortunatly they are damn expensive new.
  • 0

#30 Bert Smith

Bert Smith
  • Basic Members
  • PipPip
  • 40 posts
  • Director

Posted 18 March 2008 - 08:04 AM

Hello everyone.

Well, here is some new news. Kowa has a new (or newish) line of industrial C-mount lenses called the 1" Megapixel Series. They boast an astonishing and nearly unbelievable 120 lp/mm in the center!!!!


Oh snap!

And they sell for somewhere around $300 each. They have an image circle of 16mm (so plenty good for S16), and they come in the most excllent lengths:

8mm f1.4
12.5mm f1.4
16mm f1.4
25mm f1.4
35mm f1.4
50mm f1.4
75mm f1.8

http://www.rmassa.com/manu/kowa.htm

http://www.rmassa.co...atalog_2007.pdf



I dont know about anyone else, but if that claim is true, and if there is nothing that is preventing these lenses from properly mounting on our C-mount cameras, there is a knew (affordable) sherrif in town, and his name is Kowa!

I had better start a new post with this same info, people are going to want to see this.
  • 0

#31 zhuo chun bei

zhuo chun bei
  • Guests

Posted 07 October 2009 - 11:38 PM

Hi, everybody here, I just spent more than 1000 USD in http://www.eiluxury.com discount louis vuitton and bought one gift for my wife, I think it’s worth and the bag drives my wife crazy.
  • 0


CineLab

Rig Wheels Passport

FJS International, LLC

Glidecam

Aerial Filmworks

Paralinx LLC

Wooden Camera

The Slider

Abel Cine

Willys Widgets

Broadcast Solutions Inc

Tai Audio

Ritter Battery

CineTape

Visual Products

Gamma Ray Digital Inc

Technodolly

Metropolis Post

Media Blackout - Custom Cables and AKS

rebotnix Technologies

New Pro Video - New and Used Equipment

New Pro Video - New and Used Equipment

Broadcast Solutions Inc

The Slider

Gamma Ray Digital Inc

Wooden Camera

Technodolly

Aerial Filmworks

Rig Wheels Passport

FJS International, LLC

Media Blackout - Custom Cables and AKS

Tai Audio

CineTape

Ritter Battery

Metropolis Post

Willys Widgets

CineLab

Abel Cine

Paralinx LLC

Glidecam

Visual Products

rebotnix Technologies