Re: Konica IR

[Murray White <murphy@xxxxxxxxxxxxx>]

John Gateley At 06:50 PM 9/8/96 +0100, you wrote:
>As to the iso 8 equivalent:
>   my math says 3 stops open from 64 is 8.
>64 -1 = 32
>64 -2 - 16
>64 -3 = 8
        This part I had no problem with. The concern I had was with the
starting ISO. I have seen in the posts a wide range of ISO's and again it
depends upon the use of incident or reflected meter readings and if a gray
card is being used for reflected meter readings. Now for one more
concern--are you reading and exposing for highlight or shadow?

>As to hand held meters:
>   for years I was using a Spectra Combi that could be set to measure both
>reflected and ambient light and then average between them. 
        I will assume for ambient you actually mean incident as ambient is
the light around you as opposed to artificial (incandescent or strobe
(electronic flash). Again why split between two when incident = reflected
when read from a gray card?

        Does Konica give an ISO for their film. I thought I recalled a post
saying it is 100 ISO. I like to keep things simplified, especially when I
will use a a commercial lab to do the processing and printing.

 I would get the most pronounced IR effect when the foliage was
>backlit.
        This will be good for me when applying IR to wedding photography as
I prefer to keep the subject out of the direct sunlight and let the IR
effect come from the foliage. I think the main thing to be of concern is the
strength of the highlight/accent/backlight in relationship to the shadow area.

>Perhaps the best thing to do would be to just go out and shoot a lot of
>film and select the images that look best 
        Unfortunately, with the field of wedding photography and as a
professional I don't have that luxury. IR will only be some of the images
and time is of the essense--basically a lack thereof. I an looking for some
basic principles that will yield fairly repeatable and predictable results
from one week to another. I realize that weekly daylight conditions will
vary but once I understand the basics, I believe I'll be able to make good
decisions regarding lighting conditions of the day to get the results desired.


>Now if I could just find a fresh source of Konica 120.  Is it already all
>gone this year?

        Having never worked with it before, is production limited by time of
year or just that supply in your area is limited to certain times of the year?
Murray White APPO MPA
murphy@xxxxxxxxxxxxx
wedding photographer/knife collector


------------------------------

Topic No. 6