Topic
Topic author: Luiz Paracampo
Posted on: 20100311191542
Reply author: Bull Halsey
Replied on: 20100312000005
I have the same lens as well. What I found interesting is that the rear cap fits the length of the lens cell itself and has the "KNEB" logo molded in it..
Serial #02749
Steve
Reply author: Bull Halsey
Replied on: 20100312000101
I have the same lens as well. What I found interesting is that the rear cap fits the length of the lens cell itself and has the "KNEB" logo molded in it..
Serial #02749
Steve
Reply author: mermoz37
Replied on: 20100312083907
luiz, bull...
does the lens give you infinity focus ?
Reply author: mermoz37
Replied on: 20100312121047
Reply author: Luiz Paracampo
Replied on: 20100312164042
This is a different version with focus scale.
There is another one (Black)in fixed focus.
I will try to find.
Regards
LP
Reply author: Bull Halsey
Replied on: 20100312164315
Good point, Alain.
Normally most lenses contain a Depth Of Field Scale above the aperture . That way one can use the hyperfocal focusing system to achieve the proper f-stop. This lens however does not offer a DOF scale.
Being a 20mm, I think it safe to say that a higher f-stop would get you sharp images to infinity.
Doesn't the 35mm have the DOF Scale above the aperture control?
Screwy system....prototype lens.
Steve
Reply author: Luiz Paracampo
Replied on: 20100312165044
Reply author: Bull Halsey
Replied on: 20100312165522
I have an email sent to me from Marc James Small that added a couple interesting points concerning this lens. It was sent back in 2004 when I came across the lens on eBay. At that time we were members of the Russian Cameras Group on Yahoo. I contacted the group because I never heard of this lens and questioned its design.
I will locate his reply and see about posting here.
Steve
Reply author: mermoz37
Replied on: 20100313090639
ho ho....[:I] friends :
please stop !
my picture is somethoing like a joke ...
explanations (and apologies please [B)])
what you see there is a test I made months ago . I cut a bad Jupiter kiev lens , take off the baïonnet (shortest as possible) , then take a 39mm zenit B screw mount and fit a normal 39mm Russar.
the result is unuseable because I cannot make as compact as necessary to take infinity picture focus (only macro).
Here is dismantle assembly :
Reply author: mermoz37
Replied on: 20100313090804