Re: Konica IR versus Kodak HIE

[Murray White <murphy@xxxxxxxxxxxxx>]

>george At 11:02 PM 9/5/96 +0100, you wrote:
>Richard Fung wrote:
>> 
>> Hi all,
>> 
>> I am new to the group so please bear with me as I ask some basic questions.

        Me too. My background is in wedding photography and have never
worked with IR and do minimal B/W which has currently become the trend in
the wedding field.

        I work with Hasselblad and would be interested in only using 120/220
film. Because of the speed nature of wedding work, I am looking for
something fairly simplistic in technique, filters etc. to produce the
resultant image.

 Konica IR film in 120 medium format using
>> a 29a red filter 
        is this the best combination with the only 120 film on the market--I
have noted that Ilford is producing a "kinda like IR" film from the posts here.
I was shooting
>> grass, fields and trees in the distance with my camera set on 32 ISO (f/16 @
>> 1/125 sec).
        I use only a hand held meter in incident mode. Question? ISO setting
without concern for red filter?
        Next, exposure compensation for filter--is there any and which
direction.  I have watched the posts and seem to get different answers, some
of which may be because of the use of TTL metering and reflected meter readings.

        From the above, it is most confusing. At 32 ISO how does one get an
exposure of f/16 @ 1/125 when in bright sunshine, the basic exposure is the
inverse of the ISO @ f/16.

        I have seen some posts where with a filter factor of 3, the ISO was
not being reduced but rather increased. Also, I believe it was only being
increased to 400 ISO. Now if this is the direction to go, it would make life
easy as I currently use only ISO 400 film and this would reduce the chance
of exposure error if meter manipulation can be avoided. However, if the
filter factor requires an increase in exposure, then simply an adjustment of
time or diaphrahm is in order.
 The negatives looked fine but I did not get any "white" trees in
>> the backround; they stayed black.   If
>the trees in your image were deciduous, healthy, and in the light, the
>leaves should have been lightened.
        I am also concluding that unlike most of my wedding photos that will
be done in shaded areas, the IR work should be done in strong sunlit areas.
Please advise re this thought. I also am concluding that full length with