Re: Konica 750nm Processing Time

[Clive Warren <Clive.Warren@xxxxxxxxxxxxx>]

At 4:31 pm -0400 7/7/99, Gary Beasley wrote:

>>From: Clive Warren <Clive.Warren@xxxxxxxxxxxxx>
>>Subject: Re:Konica 750nm Processing Time
>>
>>snip
>>
>>>Even in Laurie Whites book on Infrared it shows Konica as very contrasty.
>>>When I tried it at the recommended times in D-76 I got hard to print
>>>results. For that reason I experimented and found out Technidol works well
>>>at the same specs as Tech Pan film. I checked the results with a
>>>densitometer and found that although the base fog was a little high ( .41 )
>>>the density range was dead on. I found max hilites at 1.80 and shadow
>>>detail at .45 and looking at an average image I got shadows running .23
>>>over base fog and highlight detail .97 over and printed full range on
>>>Polycontrast paper with no filter. Kinda makes it more fun when you don't
>>>have to fight the negative.
>>>Nice thing about the technidol it comes in a liquid pouch that mixes to 8
>>>oz for one shot use. I mixed two at a time and ran two 120 rolls through it
>>>with a minute added for the second roll. I almost suspect you could get
>>>more out of it but didn't bother to check it out.
>>>Gary Beasley
>>>http://beasleyglb.home.mindspring.com/
>>
>>This is all very interesting - Gary do you have any of your images on the
>>web?  A range of greys with Konica 750mm !!!
>>
>Sure, the picture titled IR bridge on my web page. URL under my signature.
>I have a whole slew of others, one set I may post is comparison shots made
>with Konica 750 and Tmax 100. Gray ranges are almost identical though the
>infrared shot is easy to pick out.
>Gary Beasley
>http://beasleyglb.home.mindspring.com/


Thanks - just had a look at the image.  Very nice shot - timed to
perfection. Did you get up early or was it late in the day?

A few questions:  is it a straight print ie no dodging and burning; are the
trees in the background in the same full sunlight as the bridge; what paper
did you print on; and finally, what filter did you use on the camera?

Would be very interested to see the comparison shots.  Am in the process of
doing something similar with the round tower church shot (in the gallery
section of the first URL in the sig. file below).  Shot it on Konica with
an R72 and Ilford Delta 100 no filter to give an idea of the Konica IR
performance.  Both films developed for 6 mins in HC with continuous
agitation.  The Konica shot is posted and should print the Ilford Delta
shot this weekend at some point and put it up on the web site as a
comparison.

Should have shot another roll at the time as it would now be sitting in a
bath of Rodinal or Technidol :-)






All the best,

              Clive   http://www.cocam.co.uk
              		  http://clive.bel-epa.com


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