Re: Filters with Konica... need suggestions!

[Clive Warren <Clive.Warren@xxxxxxxxxxxxx>]

At 12:11 am -0400 10/8/99, Luvdove6@xxxxxxx wrote:
>
>> All the IR pictures in the gallery were taken using Konica 750 and a CoCam
>>  R72 filter.  The R72 filter conforms exactly to the Wratten 89B spectral
>>  specification.  I called the filter an R72 as the 50% absorption cutoff is
>>  at 720nm.
>
>When you exposed the Konica with an R72...  what were your fstop and shutter
>speed settings?  I'm using about f11 with 1/60 or 1/125 for my first try but
>I'm new at this so let me know if that is wrong!  And I'm going to try it w/
>a red first because I only used the red25 with a P&S but now I finally have a
>manual camera so I'll try the red25 with those settings.. unless I'm way off
>;-)
>
>Thanks!
>~Holly~


Holly,

The manual camera will allow you a lot more control over your IR photography.

>From memory the Konica 750 shots were around 1/8 second at f11 using an R72
filter - this normally gives me bullet proof high contrast negs.  If you
want less contrast and more detail in the highlights try 1/15 second or
faster.

The nature of the film development process will affect your results - best
to shoot a test roll for your preferred devlopment process - lab or home.

The IRFAQ http://www.cocam.co.uk/CoCamWS/Infrared/INFRARED.HTM has a new
section on filters and recommended exposure times - you may find it useful
to have a look.


All the best,

             Clive   http://www.cocam.co.uk
                     Photographic Services, Filters and Equipment
                            http://clive.bel-epa.com
                            Adventures in Cyberspace - Digital Art and Photos


*
****
*******
******************************************************
*  To remove yourself from this list, send:          *
*         UNSUBSCRIBE INFRARED                       *
*       to                                           *
*         MAJORDOMO@xxxxx                            *
*----------------------------------------------------*
*   For the IR-FAQ, IR-Gallery and heaps of links:   *
*  http://www.a1.nl/phomepag/markerink/mainpage.htm  *
******************************************************