Re: Konica exposure with 29

[George L Smyth <GLSmyth@xxxxxxx>]

GMA wrote:
> 
> Michael Dziak wrote:
> >
> > Yes I can clear up the confusion.  George's recomendation is most likely with
> > a incident hand held meter.  Hannu's is with through the lens metering with
> > the filter in place.   Deep red filters can vastly distort the accurarcy of
> > TTL metering depending on the spectural response of the particular camera's
> > meter.  What is someones recomendation for a Nikon , may not be accurate for a
> > Canon, or  even another style of Nikon.  The film data sheets suggests an EI
> > {exposure index} of 12 with this film.  that would give you an exposure of
> > F16@x/12second in bright daylight.  Therefore my recomendation of F16 at 1/15s
> > with a bracket of F16@x/8s to cover for the maxium of when in doubt with
> > negative film, overexpose.  And with infrared your always in doubt.
> > Mike Dziak
> >
> 
> --
> So, you're saying the recommended EI is 12 and this ASSUMES the use of
> the red filter??  I.e, f/16 1/15 with filter on??
> 
> george  :>)

The documentation that came with the film states:

"The standard exposure conditions for Konica Infrared 750 file are as follows:
  With a Kenko R-1 filter, the standard exposure conditions are f5.6 @ 1/60 second
(bright sun, outdoors).
  With no filter the speed of the film is equivalent to ISO 32."

The Kenko R-1 is a red filter.  So, if you do a little math, with the filter we are
talking about EI 8 and without the filter EI 32.

george

- -- 
 Handmade Photographic Images     
  http://www2.ari.net/glsmyth/
*
****
*******
******************************************************
*  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  *
******************************************************

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