@@@ Sweet Spot Aperture for Tominon 127mm ??????????????

"Dr. Slick" wrote

So i suppose i could keep my Schneider for stuff in the distance,
landscapes and such, but it would seem to me that the "prism" effect i
get doing copy work (a thin blue line where the white of the picture
meets the black of the felt) might still be evident when i use it
focused at infinity.

If you are doing B&W then shooting through a red filter will remove
all the color fringing. A deep green or deep blue filter will also
work, but they tend to be 'double humped' and have an extra pass-band
in the deep red ~700nm where some films still have sensitivity.
FWIW T-Max films drop off the face of the earth at 650nm.

http://www.geocities.com/thombell/filters/wf47.gif
http://www.geocities.com/thombell/filters/wf61.gif

--
Nick Lindan

David Nebenzahl wrote in message ...
On 2/1/2004 10:49 AM Stacey spake thus:

Dr. Slick wrote:

So i suppose i could keep my Schneider for stuff in the distance,
landscapes and such, but it would seem to me that the "prism" effect i
get doing copy work (a thin blue line where the white of the picture
meets the black of the felt) might still be evident when i use it
focused at infinity.

Yep, it will probably still be there. Best idea is to sell that lens on
ebay and get somethine better for landscape use!

Yes, like the venerable (and cheaply available) Kodak Ektar 127mm.


Ok, so this newbie would presume that there is not an "all-in-one"
4x5 lens for close-up work AND landscape work, or is there? As it
seems you can do close-ups and landscape no problem with most 35mm
lens i have used.


Slick

Dr. Slick wrote:



Ok, so this newbie would presume that there is not an "all-in-one"
4x5 lens for close-up work AND landscape work, or is there? As it
seems you can do close-ups and landscape no problem with most 35mm
lens i have used.


They sell macro lenses for 35mm. You can use any lens [35mm or 4x5] any
way you like. It comes down to what you're willing to settle for.

The g-claron lenses might provide what you're looking for.

http://www.schneideroptics.com/photo...nses/g-claron/

Nick

"Dr. Slick" wrote

Ok, so this newbie would presume that there is not an "all-in-one"
4x5 lens for close-up work AND landscape work, or is there?

As pointed out before, a Tessar formula lens will, in general,
have a flat field suitable for copy work and will be sharp
at close distances.

It was, in the old days, common to use camera Tessar lenses on
enlargers; the Leitz Valoy being originally designed to use a Leitz
Elmar lens.

Get a 152mm Kodak Ektar. Cheap.

For macro work you can reverse any old GP lens. For strictly copy
work an enlarger lens will work just grand.

If your budget will stretch to it, a 4-element copy lens -- such as
an Artar -- will work superbly at normal distances.

Stay away from 4x5 Xenars (personal experience, YMMV), anything
from Wollensack/Graflex and anything modified from another
application (i.e. Tominon Oscilloscope lenses, Ysar Polaroid
lenses ...) - there are exceptions to this rule, but why bother
worrying about them.

--
Nick Lindan

Dr. Slick wrote:




Ok, so this newbie would presume that there is not an "all-in-one"
4x5 lens for close-up work AND landscape work, or is there? As it
seems you can do close-ups and landscape no problem with most 35mm
lens i have used.



The problem you ran into is a poor lens. That 135mm xenar you have is
useless for closeup work or landscapes! A modern 135mm plasmat lens would
do both with acceptable quality as would a -good- tessar design. The xenar
you bought was just a dog of a lens. Just like there are macro specific
35mm lenses, the same applies to LF.
--

Stacey

I think the ysarons were used on the MP-4's as well. Might be a connection
there?
--

Stacey

Ysarons were off the MP-3, went to a low end lens maker for the Tominons.
Anybody who had the opportunity put Schnieder or Rodenstock enlarging lenses on
their MP-4's

Tom