Re: Sharper Copy Lens for Crown Graphic???????

Richard Knoppow wrote:

> 
> "Dr. Slick" <[EMAIL PROTECTED]> wrote in message

>>     So i guess i could try either the 127mm Tominon or the
> APO-Ronar.
>>
>>     What do you folks think?
>>
>>
>> Slick
> 
>   An Apo Ronar would work fine. I have no idea what the
> Tominon is.


Found this on the tominon 127 doing some searching, I know they are
optimised for copy work.. Couldn't find anything showing their specific
design in a google search as far as how many elements, they either have 3
or 4.

----------
 If the lens is mounted in the shutter, (shutter iris in the middle) it is
for a MP-3 or CU-5, if the lens is mounted on the shutter, that is a
complete lens barrel screwed on to the front of the shutter, it is for an
MP-4. the 105 is, as I understand it a tessar formula lens. The 105 is
really designed for the beginning of macro photography with the MP cameras.
the 127 is the "normal" lens for regualar copying and then there is a range
of smaller sizes all the way down to 17mm for 10x macro shots.
-----------

Also found where it does cover 4X5 even at infinity so should have no
problem with copy distances. Another poster was talking about these being
sold as "flat field" lenses like enlarging lenses are. I've been using a
105mm ysaron (not ysarex, it's a different lens made for infinity use) for
enlarging for years and when I tested it against a 135mm enlarging lens I
bought for 4X5, I saw no improvement in resolution or contrast. The ysaron
and tominon were suposed to be interchangable on those cameras, just
different manufacturers.

 Even the 105mm should be OK at the distances he's talking about but the
127mm would give more working room for lighting. These are a great deal as
most sell for under $100 mounted in a shutter as very few people have any
idea what these are or how good they work!


-- 
 
  Stacey