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75mm f1.9 WOLLENSAK OSCILLO- ANAS ALPHAX LENS

 
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lamb



Joined: 21 Nov 2003
Posts: 15
Location: Hong Kong
PostPosted: Sun Nov 23, 2003 4:13 pm    Post subject: Reply with quote
Is it a practical lens for century graphic?
Mine is a 6x9 format.Does it cover?
Also I don't have a lens board for it.So what should I do,to buy one,or to make one?
Thanks for answering!
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Dan Fromm



Joined: 14 May 2001
Posts: 2144
Location: New Jersey
PostPosted: Sun Nov 23, 2003 5:23 pm    Post subject: Reply with quote
Quote:

On 2003-11-23 08:13, lamb wrote:
Is it a practical lens for century graphic?
Mine is a 6x9 format.Does it cover?
Also I don't have a lens board for it.So what should I do,to buy one,or to make one?
Thanks for answering!


No, not a practical lens. O'scope lenses aren't designed to be used on distant subjects.

Should cover, I think the polaroid film used in the camera the lens came from was larger.

Board? I've never looked closely at an Oscilloscope lens' Alphax shutter, have had a couple of Ilex #3s from 'scope lenses. The Ilexes were not threaded externally at the rear, so could not be mounted on board.

Also, its been a while since I've looked at a 75 mm Wolly o'scope lens, but I think the rear element is too big to clear the front standard. If so, to put the lens on the camera you'll have to unscrew rear cell from lens, mount board on camera, rescrew rear cell from behind. Check that it will clear the bellows before investing much time in it.

The Century uses 2x3 Pacemaker boards. These are metal, with the edge folded over to fit into the light trap. Hard to make by hand. I've used pieces of cardboard carefully cut from the stuff that backs, e.g., yellow pads for temporary use.

Welcome to the club of people who wish there were inexpensive wide angle lenses for press cameras. Such lenses don't exist.

Cheers,

Dan
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Les



Joined: 09 May 2001
Posts: 2682
Location: Detroit, MI
PostPosted: Mon Nov 24, 2003 3:48 am    Post subject: Reply with quote
I have a 75mm 1.9 Wolley Oscillo-Dumont lens. I't a planar in formula and at inifinity will not cover 6x6.

In its original mount it wouldn't cover 2x3 even in macro. they had mirror system hooked up so you could get a scope image that was square (or round actually, since that was what the scope was) and then the data when in the leftover space.

My Alphax did have external thread and had Grimes make an adapter for to to slip over my barrel Protar lens. works great.

Several times I've seen these lenses advertised on ebay as covering 4x5. The ONLY time they cover 4x5 is somewhere around 2x or 2:1. As an "incredibly fast wide angle lens made from a formula they can no longer duplicat at any price!"
Fooey. It isn't, and they can and do all the time.

Les
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