Re: Fw: IR 750 Sensitivity

[Dan Cardish <dcardish@xxxxxxxxxxxx>]

I have a data sheet lying around somewhere which showed quite clearly a low
spot around green on a spectral sensetivity curve for Konica 750.

Dan C.

At 10:32 PM 06-11-00 -0500, ADavidhazy wrote:
>> OK, list; here's the answer I finally got; Andy Davidhazy, what do you make
>> of this???  Hey, I'll let you be the one to process it under a green light
>> and tell me if it gets fogged or not. Me, I'll just not trust it...
>> Chris
>
>Veeerrrryyy interesting. Just remember that I claimed to have made this
>deduction, based on postings on this list, first!   ;-)  call it the
Davidhazy
>and Company safelight processing guide for Konica 750 film!
>
>BTW, please note that even if this IS true (which I very much doubt) you
would
>need an IR absorbing filter in addition to the green filter to use as a
>safelight ... unless the green filter one happens to get is opaque to red and
>very near IR ... as well as to blue of course.
>
>adios,
>
>Andrew  o o  0 0 o . o  Davidhazy, Imaging and Photo Tech
>         \/\/\/\/\/\/          http://www.rit.edu/~andpph
>__________|        |_____________________________________
>
>
>> ----- Original Message -----
>> From: Todd Tereshkow <Tereshkow_T@xxxxxxxxxx>
>> To: <tracez@xxxxxxx>
>> Sent: Monday, November 06, 2000 6:09 PM
>> Subject: IR 750 Sensitivity
>
>> > Christina,
>> >
>> > Thank you for your interest in Konica IR750 film.  The film
>> > is essentially blind in the green part of the spectrum.  The red filter
>> will
>> > give you the most vivid IR effect compared to the orange filter.  I would
>> > recommend that you experiment with both filters and bracket the exposure
>> to
>> > find the appropriate exposure level and IR effect that you are looking
>> for.
>> >
>> > Regards,
>> >
>> > Todd O. Tereshkow
>> > Vice President Technical Service
>> > Konica Photo Imaging
>> > 725 Darlington Avenue
>> > Mahwah, NJ  07430
>> >
>> > Phone: (201)574-4070 E-Mail:  tereshkow_t@xxxxxxxxxx
>> > <tereshkow_t@xxxxxxxxxx>
>> >
>> >
>> >
>> > -----Original Message-----
>> > From: Christina Z. Anderson [mailto:tracez@xxxxxxx]
>> > <mailto:[mailto:tracez@xxxxxxx]>  <mailto:
>> > Sent: Friday, October 27, 2000 10:41 AM
>> > To: film@xxxxxxxxxx <mailto:film@xxxxxxxxxx>
>> > Subject: Konica 750 spectral sensitivity
>> >
>> > I've been trying to call tech help and can't seem to locate the correct
>> > place!.  I have your technical data sheet with the graph of spectral
>> > sensitivity of Konica 750 Infrared.  My question is this: is it BLIND to
>> > yellow and green light waves, as the graph looks like it shows, or is it
>> > just less sensitive in this area between 520nm and 650nm?  Do you get
>> equal
>> > results with the orange 15/16, red 25 and red 29 filters therefore?
>> > Thanks in advance
>> > Chris Anderson
>> > PS I know you are discontinuing this film but I have it
>> > still.
>> >
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