Topic
Topic author: Guido
Posted on: 20090817062559
Reply author: Vlad
Replied on: 20090817191419
Hi Guido, this probably would be a good question for Detlev ... I'll see if I can get ahold of him so he looks at this..
Vlad
Reply author: nightphoto
Replied on: 20090817232359
Hi Guido,
I don't have any specific information about this camera, but the schematic shown in the auction description looks very much like those shown in the manuals of other KGB surveillance cameras. And the style of engraving is like the KGB cameras ... not like the style on the Zenit-D.
My guess would be that since the Zenit-D was not a successful series camera, KMZ had parts left and they were used to make this surveillance or technical camera.
Also, it seems that black is the color used for many KGB and police cameras.
I'm not too good at looking at the schematics, but to me it looks like it had a motorized focusing mechanism is the lens (not present) and also motorized winding mechanism unit (also not present).
Probably the beginning of the serial number does represent 1979 ... about 9 years after the Zenit-D was last made as a consumer product.
The seller has had this camera up for several months, but the price is high for an incomplete item.
You can compare features and serial numbers with the photos I took of my Zenit-D, which is complete and fully functional:
http://www.nightphoto.com/zenitd.htmlRegards, Bill
Reply author: Luiz Paracampo
Replied on: 20090818205623
Reply author: Detlev
Replied on: 20090819103031
Reply author: Luiz Paracampo
Replied on: 20090819180729
Hello Detlev!
I did see the schematics and qustion!
Why a second reflex fider in a reflex camera?
regards
LP
Reply author: Luiz Paracampo
Replied on: 20090819182508
Reply author: nightphoto
Replied on: 20090819195022
I think, what you see on the schematic, as far as the reflex mechanism, is the inside of the Zenit-D, not an added reflex mechanism.
I wonder where the lens is? It would be wonderful to have the camera as it is shown in the set of photos that Luiz posted, which includes the winding motor, and the 3000 mm lens ... all as one original set!
Regards, Bill
Reply author: Vlad
Replied on: 20090819195433
Any speculation what this camera was made for? 3000mm! Is this a telescope?
Reply author: Guido
Replied on: 20090820054420
Hello friends
There are very interesting details I can read here! Thank you all.
To the last question from Vlad: Well, I don't know the definition about the difference between a larg telephoto lens and a telescope, but I think we can talk about a telephoto lens in this case. In our days we can find things like this:
The Zeiss Apo Sonnar T* 1700mm/4, a monster device with 256kg ...
http://www.dpreview.com/news/0610/06100101zeiss1700f4.aspLuis, you are probably right with the optical path you have drawn. And I'm also thinking that the reflex mechanism is an additional one outside the camera body. The reason for this may be the need for a better viewfinder with the decomposer prism.
For the auto focus ... I can't see any evidence for such a function in the drawing. It would make no sense to me to have such a complicated optical system in the region of the viewfinder for the AF-sensor. It could be mounted just above the decomposer prism.
My guess for the double viewfinder is, that one shows the total of the picture and the other is a focusing aid with strong magnifier.
I can't see also any motor on the drawing. Okay, this little device near the reflex mirror could be one, but I think this could also be an electric magnet for moving the mirror.
There are also two rotary knobs (see 42-45) maybe for manually adjusting the focus (but don't ask me why there are two knobs needed for this ...).
Best wishes - Guido
Reply author: Zoom
Replied on: 20090820111616
<blockquote id="quote"><font size="1" face="MS Trebuchet, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by Guido Studer</i>
<br />In our days we can find things like this:
The Zeiss Apo Sonnar T* 1700mm/4, a monster device with 256kg ...
http://www.dpreview.com/news/0610/06100101zeiss1700f4.asp<hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote">
Zeiss can't beat this:
http://www.zenitcamera.com/archive/lenses/mezon-2a.jpg
This is Mezon-2A, apparently, the biggest <b>dioptric</b> photographic lens in the world ever made.
f = 3000 mm, weight = 500 kg, lens diameter = 600 mm (it is impossible to make more, glass starts to flow).
Reply author: Vlad
Replied on: 20090820113337
Wow!! [:D] I've seen a different picture of it before... wasn't it made for photographing the Earth from Satellite? Very impressive work by GOI..
Reply author: Zoom
Replied on: 20090820120233
<blockquote id="quote"><font size="1" face="MS Trebuchet, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by Vlad</i>
<br />wasn't it made for photographing the Earth from Satellite?
<hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote">
Yes.
<blockquote id="quote"><font size="1" face="MS Trebuchet, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by Vlad</i>
<br />
Very impressive work by GOI..
<hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote">
They have calculated the optical scheme... Designed and manufactured by KMZ. It was in the end of 1960s.
Later other lenses, with more best optical characteristics has been designed (Mezon-3A by GOI and KMZ, Kentavr [Centaur] -- KMZ). But this new lenses are less on dimensions and weight...
Reply author: Detlev
Replied on: 20090826132215
Reply author: Vlad
Replied on: 20090903110340
[:0][:0][:0][:0][:0][:0][:0][:0]
This is something I would call heavy KGB artillery... [:D] WOW!!
Vlad
Reply author: Detlev
Replied on: 20090915051256
Reply author: Luiz Paracampo
Replied on: 20090915095205
Nathan!
Excellent information about Negus set!
The pan head base and low tripod is of Moskinap (MK) manufacture famous for their Professional movie cameras!
Another fantastic is the binocular viewing and focusing!
LP
