Frank_E
7-Nov-2009, 18:41
So this is my third posting today with a question, hopefully there is not a quota. I promise this is my last one today....
this lens (pictured below) was acquired along with my 4x5 Nakaoka field camera and other miscellaneous LF parts (ie film holders etc)
It looks like it was salvaged off of an older bellows style folding camera. It had been fitted onto a home made lens board for my camera. So I guess one of the previous owners (I am at least the third owner...) had tried it out. The last owner had not...
the stem takes a conventional shutter release, but there is no timed shutter. The duration of the exposure is determined by how long you hold the shutter release open. Possibly the camera had a focal plan shutter, but then why the shutter release on the stem?
The iris does have four settings, not conventionally marked.
They are simply marked: 1, 2, 3, 4
The front element seems to have had a collar retrofitted on it. I presume so that it cannot be screwed into the the shutter opening too far. The glass portion of the front element is about 22mm in diameter.
The rear element has one marking stamped on it:
"Illex Rapid Rectilinear"
The rear element has a collar which would take a retaining ring. But the ring is missing.
The screw mount diameter for both the front and rear elements appear to be 31mm.
Obviously I can mount it on the camera and experiment with it, which I will probably do. However considering my limited experience with LF photography I would prefer to try it with a "timed shutter".
I have been "Ebay browsing" for inexpensive shutters and wondering how I would mount the shutter on the lens. My field camera would not accommodate a "Packard, behind the lens arrangement", so I was envisioning putting the new shutter onto the front of the lens somehow (glue???). Mounting the shutter on the front poses the risk of partially obstructing the field of view, since I have no idea what the focal of the lens is.
I guess one option would be to find a shutter that has 31mm openings (is there one?) and remount the front and rear elements. However I have no idea what the spacing should be.
So some questions:
1. any idea what camera this came off of?
2. what do you speculate the focal length might be?
3. what arrangement would you suggest for trying out the lens?
thanks in advance for your feedback...
this lens (pictured below) was acquired along with my 4x5 Nakaoka field camera and other miscellaneous LF parts (ie film holders etc)
It looks like it was salvaged off of an older bellows style folding camera. It had been fitted onto a home made lens board for my camera. So I guess one of the previous owners (I am at least the third owner...) had tried it out. The last owner had not...
the stem takes a conventional shutter release, but there is no timed shutter. The duration of the exposure is determined by how long you hold the shutter release open. Possibly the camera had a focal plan shutter, but then why the shutter release on the stem?
The iris does have four settings, not conventionally marked.
They are simply marked: 1, 2, 3, 4
The front element seems to have had a collar retrofitted on it. I presume so that it cannot be screwed into the the shutter opening too far. The glass portion of the front element is about 22mm in diameter.
The rear element has one marking stamped on it:
"Illex Rapid Rectilinear"
The rear element has a collar which would take a retaining ring. But the ring is missing.
The screw mount diameter for both the front and rear elements appear to be 31mm.
Obviously I can mount it on the camera and experiment with it, which I will probably do. However considering my limited experience with LF photography I would prefer to try it with a "timed shutter".
I have been "Ebay browsing" for inexpensive shutters and wondering how I would mount the shutter on the lens. My field camera would not accommodate a "Packard, behind the lens arrangement", so I was envisioning putting the new shutter onto the front of the lens somehow (glue???). Mounting the shutter on the front poses the risk of partially obstructing the field of view, since I have no idea what the focal of the lens is.
I guess one option would be to find a shutter that has 31mm openings (is there one?) and remount the front and rear elements. However I have no idea what the spacing should be.
So some questions:
1. any idea what camera this came off of?
2. what do you speculate the focal length might be?
3. what arrangement would you suggest for trying out the lens?
thanks in advance for your feedback...