Topics

c-12 camera


snapdiode
 


Chris Trask - N7ZWY/WDX3HLB
 

That's not ludicrous, it's outrageous! I have a number of Tektronix scope cameras, and a few were simply given to me. When the cost of the Polaroid film became too expensive, I simply used a digital camera on a tripod.


I've get the urge to mount a camera to my 547. I suppose the C-12 is the correct camera for this scope.

Are these cameras always this ludicrously expensive?

http://www.ebay.ca/itm/Oscilloscope-camera-C-12-w-75mm-F-1-9-Oscillo-Paragon-3-0-85X-ilex-Nice-Set/332486059166?hash=item4d69b6a49e:g:Z6wAAOSwEK9T9Y4B http://www.ebay.ca/itm/Oscilloscope-camera-C-12-w-75mm-F-1-9-Oscillo-Paragon-3-0-85X-ilex-Nice-Set/332486059166?hash=item4d69b6a49e:g:Z6wAAOSwEK9T9Y4B
Chris

When the going gets weird, the weird turn pro
- Hunter S. Thompson


snapdiode
 

They declined my generous 40$ offer too. Something tells me they don't realize what this is, given the erroneous description.


Richard Solomon <dickw1ksz@...>
 

You offered too much.

73, Dick, W1KSZ

On Dec 13, 2017 6:17 PM, "snapdiode@... [TekScopes]" <
TekScopes@...> wrote:



They declined my generous 40$ offer too. Something tells me they don't
realize what this is, given the erroneous description.

[Non-text portions of this message have been removed]



[Non-text portions of this message have been removed]


snapdiode
 

It comes with an attractive case. I wonder what they paid for it ... there must be some buyer's remorse over there.


Daniel Koller
 

Maybe I don't understand that camera, but I don't see a film-back.  Presume it's 4x5, which is getting to be unobtanium.   I used my last shots up about 15 years ago, with 10 year old expired film, and it still sort of worked.  
dan

On Wednesday, December 13, 2017, 8:23:12 PM EST, Richard Solomon dickw1ksz@... [TekScopes] <TekScopes@...> wrote:

 
You offered too much.

73, Dick, W1KSZ

On Dec 13, 2017 6:17 PM, "snapdiode@... [TekScopes]" <
TekScopes@...> wrote:



They declined my generous 40$ offer too. Something tells me they don't
realize what this is, given the erroneous description.




[Non-text portions of this message have been removed]


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snapdiode
 

In any case, this seller seems to be on some heavy drugs or something, the prices are insane, yet they have feedback! They sell!


Ed Breya
 

That one shown is a way over-priced (by 25-50x) hulk of a camera, and I think it's too new to fit the old 500 series round bezels anyway - and I think it's missing some parts too (the Polaroid film back, for one). You may be able to find the right kind of CRT mount eventually, but it's easier to find the more modern kind that hang from the slot in the top of the rectangular bezel. You can rig up some sort of adapter to fit the oldies, with banana plug mounts, or a flange to replace the bezel for picture taking.

With patience you should look for a nice light weight C-5 type for cheap ($5-10) or free. I've collected a few over the years. On the first one I ripped out the film back, lens, and flash, and mounted a USB PC camera. One of these days I plan to do the same with another, but instead of an attached USB camera, it will have a little mounting shelf on it to hold a phone-camera in the right position - no wires or PC needed, except to get the shots out of the phone later. For the oldies, you can probably just hold a modified C-5 against the front of the scope to steady it and space it properly.

With a steady hand and subdued lighting, you don't even need a camera box to get pretty decent screen shots.

Ed


 

4x5 film is still readily available. The instant film is $20-$25 for a 10
sheet pack, regular wet-developing film $35 or so for 25 sheets at B&H
Photo.

On Wed, Dec 13, 2017 at 8:47 PM, Daniel Koller kaboomdk@...
[TekScopes] <TekScopes@...> wrote:



Maybe I don't understand that camera, but I don't see a film-back.
Presume it's 4x5, which is getting to be unobtanium. I used my last shots
up about 15 years ago, with 10 year old expired film, and it still sort of
worked.
dan


snapdiode
 

From what I read the C-12 is for the 500 series and the C-5 for the 5000 series. There's a C-5 locally for 36$, just a metro ride away.


Ed Breya
 

If the C-12 is for 500 series, then the unit pictured is missing the CRT bezel mount too - I don't see anything there that looks like it could hook to a scope of any kind, actually. The mount is probably still attached to whatever scope the camera was used on, if it still exists.

Ed


snapdiode
 

Yeah, and the worst part is it just sold for 200$ apparently.


Vince Vielhaber
 

I've seen them retro-fitted with a small USB camera. How well that would work for looking at a fast single sweep, I dunno. The last one I saw (somewhere on the web a couple of years ago) *claimed* it was fast.

Vince.

On 12/13/2017 08:47 PM, Daniel Koller kaboomdk@... [TekScopes] wrote:


Maybe I don't understand that camera, but I don't see a film-back.
Presume it's 4x5, which is getting to be unobtanium. I used my last
shots up about 15 years ago, with 10 year old expired film, and it still
sort of worked.
dan

On Wednesday, December 13, 2017, 8:23:12 PM EST, Richard Solomon
dickw1ksz@... [TekScopes] <TekScopes@...> wrote:


You offered too much.

73, Dick, W1KSZ

On Dec 13, 2017 6:17 PM, "snapdiode@... [TekScopes]" <
TekScopes@...> wrote:



They declined my generous 40$ offer too. Something tells me they don't
realize what this is, given the erroneous description.




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Chuck Harris
 

For so many years they were at throw away prices, film was obsolete,
and unavailable, and most got thrown away. Now those that remain are
rather rare. The art photography world has again shown interest in
the polaroid film, so it is once again being manufactured, but is a
cache item. Which means expensive.

-Chuck Harris

snapdiode@... [TekScopes] wrote:


Richard Knoppow
 

4x5 film is relatively easy to get, its Polaroid film that is
impossible. It was discontinued years ago. I don't remember the C-12
well but the photos of it I found on the web show it to have a Graflex
Graflok back, which took Graflex type holders (different than used on
Graphic and other press cameras) and also accessories like the various
Polaroid adapters.
The lenses were not outstanding, they were designed to be sharpest
at the distance from scope to film in the camera. They were made by
various companies, mostly Ilex (Ocillo-Paragon) and Wollensak
(Ocillo-Raptar). These used to show up as surplus very cheaply.
For sheet film I recommend Freestyle Photo in Los Angeles or B&H in
New York.


On 12/13/2017 5:47 PM, Daniel Koller kaboomdk@... [TekScopes] wrote:

Maybe I don't understand that camera, but I don't see a film-back.
Presume it's 4x5, which is getting to be unobtanium. I used my last
shots up about 15 years ago, with 10 year old expired film, and it
still sort of worked.
dan
--
Richard Knoppow
dickburk@...
WB6KBL


snapdiode
 

Good grief, so just as I want to actually use a scope camera, they've become a hipster fashion accessory?


Chuck Harris
 

Not so much the scope cameras, but rather the new
manufacture poloroid style 4x5 film.

Though I do recall seeing a scope camera being used
as the basis for one of the "steampunk" projects.

I would think the lens would make a nice enlarger lens...
flat field, very fast...

-Chuck Harris

snapdiode@... [TekScopes] wrote:

Good grief, so just as I want to actually use a scope camera, they've become a hipster fashion accessory?





------------------------------------
Posted by: snapdiode@...
------------------------------------


Craig Sawyers <c.sawyers@...>
 

I would think the lens would make a nice enlarger lens...
flat field, very fast...

-Chuck Harris
I don't think so Chuck. They are optically designed for very close to unity magnification, and hence
unity conjugates, and monochrome. If you use them for much higher magnification they will be nothing
like flat field, and will be beset with just about every aberration in the book. Even worse if you use
them for colour.

Craig


Artek Manuals <manuals@...>
 

Besides almost no one uses enlargers anymore ...for that matter almost
no one uses scope cameras anymore :-)
Dave
manuals@...

On 12/14/2017 3:36 AM, 'Craig Sawyers' c.sawyers@...
[TekScopes] wrote:

I would think the lens would make a nice enlarger lens...
flat field, very fast...

-Chuck Harris
I don't think so Chuck. They are optically designed for very close to
unity magnification, and hence
unity conjugates, and monochrome. If you use them for much higher
magnification they will be nothing
like flat field, and will be beset with just about every aberration in
the book. Even worse if you use
them for colour.

Craig

--
Dave
Manuals@...
www.ArtekManuals.com


Bruce Griffiths
 

Petzval curvature is actually independent of the conjugates.

Phosphor emission is narrowband but far from monochromatic.

Some form of chromatic aberration correction of the lens will be necessary.

Bruce

On 14 December 2017 at 21:36 "'Craig Sawyers' c.sawyers@... [TekScopes]" <TekScopes@...> wrote:



> I would think the lens would make a nice enlarger lens...
> flat field, very fast...
>
> -Chuck Harris

I don't think so Chuck. They are optically designed for very close to unity magnification, and hence
unity conjugates, and monochrome. If you use them for much higher magnification they will be nothing
like flat field, and will be beset with just about every aberration in the book. Even worse if you use
them for colour.

Craig







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