Re: [APML] A small print film test...

["William R. Mattil" <wrmattil@ix.netcom.com>]

George Anderson wrote:

>
>I have a couple of rolls of 400TMax TMY that I will try hypering unless
>someone has already been down that road.
>
>
>  
>
George,

My understanding of the hypering process is this. That *if* the film is 
good to begin with it can possibly decrease reciprocity failure to a 
manageable level. Now all of the films that I have shot hypered, were 
good unhypered ..... good reds, blues and greens. Hypering made them 
better. Particularly for long exposures.

Is this, in fact, accurate ? Can anyone point to a relatively current 
film that had horrible red response that hypering improved ?

Unhypered TP is quite useable for short exposures.

T-Max in all the varieties that I have shot had horrible red response. 
Therefore my guess is that hypering will gain nothing. I used this film 
to focus test my prime focus set-up and my schmidt camera. Never saw any 
red in any of it (realising it *is* a B&W film mind you.) :)


I guess what I am trying to say is that unless someone can state that my 
assumption is wrong, trying short exposures with the film and 
determining the overall color response makes more sense than hypering a 
bad film to start with. My understanding is that hypering does not 
change the sensitivity at a given wavelength. It just reduces reciprocity.

Regards

Bill

-- 

William R. Mattil  :  http://www.celestial-images.com


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