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HELP!
Old 01-11-2005, 09:03 PM   #1 (permalink)
Art
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I know 99.9% of you guys are digital but I need some help here and I am desperate.

OK, So what I have is a Rodenstock Imagon 120mm f4.5 lens that's attached to a Prontor Professional 1 shutter, that's attached to a Hasselblad converter that appears to have a focusing ring. Plus I have a lens hood, a filter of some sort labelled 4x and three snap-on disks labeled H=4.5/H=5.8, H=5.8/H=7.7, & H=7.7/H=9.5.

I know this lens is suppose to give a 'sparkling' soft effect to portraits and images in general - very similar to the black scarf technique only this is German engineered, so I am sure it was $$ when it first came out.

How the HECK does this thing work with my Hassey?

The converter doesn't have the cocking mechanism in it, so it looks like I have to hold and cock the mirror up and then depress the shutter some how. What I can't do is focus because the shutter is always closed and I can't figure out how to open the shutter long enough to focus.

I probably need a very fancy cable release of some sort as well in order to time this thing properly.

HELP!

Regards, Art.
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Re: HELP!
Old 01-11-2005, 11:43 PM   #2 (permalink)
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The shutter should have a "B" ot "T" setting which would allow you to hold it open while you focus. I prefer T myself. If you only have a "B" you will need a locking shutter release. B hold the shutter open as long as the release is pressed while T setting require pushing the shutter release twice.
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Re: HELP!
Old 01-12-2005, 11:18 AM   #3 (permalink)
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You have a soft focus lens that sounds like the ones manufactured by a canadian photographer in the early 80's, the name escapes me right now I think it was Igor or Ivan something. It was a pricey thing well over $900 at the time. The clip on disks are aperatue settings and control the amount of softness. The larger the aperature the softer the image and the smaller the aperature the sharper. Very nice soft effect but a pain to use. If I can locate the name I'll repost. Maybe you would be able to locate an instruction book.

Terry Winslow
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Eureka!
Old 01-12-2005, 11:48 PM   #4 (permalink)
Art
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Thanks for the help.

I got this procedure from the Hassey User's Group:
--------------------
With a 500 series body you can in theory make due with one cable release on the Prontor, but it would be easier with two, the second for your body's release.

The procedure would be like this:
1. Open the Prontor shutter (B exposure) with cable release and lock.
2. Focus.
3. Close Prontor shutter by unlocking the release, and set proper/desired exposure.
4. With a second release open the body's aux shutter by pressing the release, or alternatively, prefire the body (mirror prefire).
5. With the aux shutter open then release the Prontor shutter using the cable release.
6. Release the body's shutter or unlock the cable release on the body to close the body's aux shutter.
--------------------

I guess I would add the disks after focussing and see which one gives me the effect I like.

For anyone that is interested in seeing what the heck I am talking about, here's a couple links:

Introducing the Imagon
Rodenstock Imagon Catalog
About Prontor Shutters

And here's some links to the kind of pictures this lens assembly is capable of taking (these images are not mine):





No Photoshop! Apparently this lens is only one of about 100 made and this assembly for a Hassey is one of a handful only. Not a bad buy for $200CAD at a flea market.

Regards, Art.
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