adding shutter to enlarging lens
David J. Cleverdon
i have been shooting 4x5 for about 2 years and love it. i have
(2) Schneider lens, a 90mm and a 210, my question is could
a 150mm enlarging lens be equiped with a shutter for close-up,
or macro work (i happen to have a spare Schneider 150),
thanks
david
Marc F. Hult
On Fri, 22 May 1998 15:35:20 -0600, "David J. Cleverdon" <davi...@micron.net>
wrote in message <3565EF98...@micron.net>:
If your "Schneider 150" happens to be a Schneider 150mm Componon-S, the cells
can be removed from the enlarging-style barrel and screwed directly into a
Copal #0 shutter. You may need to have the iris scale marked and the
inter-cell distance adjusted. Works like a charm (and was/is also sold with a
shutter by Schneider).
HTH ... Marc
--
Marc F. Hult
hu...@cinternet.net
skgrimes
Most of the modern German and Japanese enlarging lenses can be assembled
directly into appropriate shutters. -- The lens iris barrel is made to the
same dimensions as the corresponding shutter.
There is a problem of obtaining the correct iris scale, since the scale on
the barrel cannot be used on the shutter, and shutters are supplied without
iris scales (since there are so many different lenses) Iris scales can
sometimes be obtained from the manufacturer, home-made from paper tape and
ball point pen, or I can supply any engraved scale for any lens, engraving
directly onto the shutter.
My web-site has dimension info about the various available shutter sizes.
SKG
--
---- S.K. Grimes -- Feinmechanik ----
--Machine work for photographers
--Lenses fitted to shutters, iris scales engraved
http://www.skgrimes.com
(updated 5-18-98)
David J. Cleverdon wrote in message <3565EF98...@micron.net>...
Jean-Christophe Barnoud
Do be careful, at least with Rodagons, as fitting them into a standard
shutter may become a major project.
Taken from a Rodagon 105 f/5.6 (50 f/2.8 and 80 f/4 apos seem to be the
same) :
front lens cell thread : 37.9mm (between 0 and 1 size)
rear lens cell thread : 29.5mm (size 0)
spacing 25mm (thicker than 0 and 1, which is a good thing if you have
to make an adapter)
Minimum risk would probably involve machining an adaptor for each cell
and fitting the lot in a number 1 shutter. Maximum risk would be trying
to machine a 29.5 thread directly into the front lens cell, with chance
(a lot of it) it could be possible to fit the lot in a number 0
shutter.
Componons may be easier, it is worth a check with a caliper.
Jean-Christophe
Steve Alley
skgrimes wrote in message <6k6fav$giv$1...@ligarius.ultra.net>...
>There is a problem of obtaining the correct iris scale, since the scale on
>the barrel cannot be used on the shutter, and shutters are supplied without
>iris scales (since there are so many different lenses) Iris scales can
>sometimes be obtained from the manufacturer, home-made from paper tape and
>ball point pen, or I can supply any engraved scale for any lens, engraving
>directly onto the shutter.
>
OK, I'll bite. If you're simply screwing the entire enlarging lens onto the
shutter, why can't you use the shutter iris wide open, and use the
iris in the lens?
Steve
Steve Alley
skgrimes
Yes, you can do this and it will work fine, presuming you can find or
fabricate the adapter to fit the barrel to the front of the shutter. And
presuming you have figured out that the shutter is large enough not to
vignette the image. (And yes, you can use "O" rings, epoxy, play-doh,
rubber bands, cadboard wrapping or whatever to get the lens to fit on the
front of the shutter -- some people are just fine with this and others can't
stand it.) I figure anything that does the job you need is OK.
Some of the lenses are configured, happily enough that they can fit front
lens at the front and back lens at the back of the shutter, in which case no
machining or adapters are necessary.
Lenses of this type seem to have been designed to be sold either in barrel
or shutter at option.
Either way will get the job done.
SKG
--
--- S.K. Grimes -- Feinmechanik ----
--Machine work for photographers
--Lenses fitted to shutters, iris scales engraved
http://www.skgrimes.com
(updated 6-1-98)
Steve Alley wrote in message <6l4gbf$f...@news.snowcrest.net>...
Jeff
JUST USE A PACKARD SHUTTER . YOU CAN FIND THEM WITH BOTH
STROBE AND BULD SYNC AND THEY ARE HELD ON TO THE BACK
OF YOUR LENS BOARD WITH SCREWS . YOU CAN GET THEM FROM
DEARDORFF ( DEARDORFF PHOTOGRAPHIC PRODUCTS ) IN VALPORAZO
INDIANA , JACK IS THE OWNER AND HE ALSO MAKES A FINE CAMERA
THAT THE JAPS COULD NOT DUPLICATE FOR ANYTHING .
JEFF
Andy Schmitt
Can I use a Packard Shutter behind the lensboard on my 8x10? I'm finding
ALOT of lenses I can afford but the all seem to come shutterless...
thanks
andy
Jeff wrote in message <3577f...@news7.kcdata.com>...
Tom Ferguson
Packard shutter are great, but have some limitations. The company is
still in business. They are very helpful, and can be reached at
800-257-8541.
These are large mechanical shutters. They can be electric or air
controlled. It is important to determine that the shutter will fit both
on your lensboard AND through the opening in the front standard of your
camera. They come in different sizes, get one as large as you can. On
wide angle lenses you may have a vignetting problem. You will only have
one shutter speed (about 1/20 second), plus the equivalent of "B" and "T".
These are often available used. Older ones may or may not have sync
and/or the 1/20 second operation. Good luck, within these limitations
they are a great way to use inexpensive "barrel" lenses.
Another way to handle enlarging lens is to buy a large shutter (a Betax #4
in my case) that has "standard" threads. Mine has 49mm (??). I buy a
Cokin adapter that fits the shutter and another that fits the lens
threads. Epoxy these together and you can mount any number of different
lenses to the shutter. This method gives you any shutter speed you want.
You also don't have the "large enough lensboard / opening" issues. I
would only suggest this method for long lenses or macro lenses, and normal
or wide angle lenses could have serious vignetting issues.
tomf...@pipeline.com (Tom Ferguson)
In article <B0Ud1.258$BE5.1...@news.rdc1.nj.home.com>, "Andy Schmitt"
<aa...@home.com> wrote:
>Can I use a Packard Shutter behind the lensboard on my 8x10? I'm finding
>ALOT of lenses I can afford but the all seem to come shutterless...
>
>Jeff wrote in message <3577f...@news7.kcdata.com>...
>>JUST USE A PACKARD SHUTTER . YOU CAN FIND THEM WITH BOTH
>>STROBE AND BULD SYNC AND THEY ARE HELD ON TO THE BACK
>>OF YOUR LENS BOARD WITH SCREWS . YOU CAN GET THEM FROM
>>DEARDORFF<SNIP>
Steve Alley
Steve,
Thanks for the info. Had me going there for a minute....
Steve
skgrimes wrote in message <6l712o$tsb$1...@ligarius.ultra.net>...