Technical Pan usage

[bob_moulton1]

Can anyone suggest starting points for developer times/iso for using 4x5 Technical pan in landscape and natural light portraiture? I have used it for extreme expansion--times when the meter needles barely moves - and have excellent results when using it in TmaxRS, Fg7 or even D-76. But my attempts at using the ilm under N or N+/- 1/2 situations have crashed and burned. I like the clarity of the negs but have yet to master using the film in any but extreme circumstances.

[chad_jarvis1]

Tech Pan is the finickiest, yet most versatile, of all the Kodak

emulsions. I'm surprised more folks don't use it... well maybe I'm

not surprised. It has some interesting quirks that are compounded at

time of exposure and development depending on the situation, i.e.

whether you want high contrast or low contrast and the speed at which

you are rating the film. A data sheet for 4415 is published in

Kodak's publication Kodak Professional Bland and White Film

(Publication F-5) and may be available on their web site.<br><br>

One note: they recommend Technidol Liquid Developer for pictorial

applications (low contrast, develop: 5 to 11 min, EI: 16 to

25).<br><br>

When you say "crashed and burned", what exactly do you mean?

[william_marderness1]

Try this formula with Tech Pan, which avoids the problems of

phenidone:

 

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T/O XDR-4 (modified)

 

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metol 1g

sodium sulfite 20g

sodium bicarbonate 10g

 

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to make 1 liter

 

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Use undiluted, try 8-12 min. at 68.

[sean_yates]

"Bland & White"? Freudian Slip there Chad?

[chad_jarvis1]

Bland and White - I don't have any idea where that came from...

except maybe most of MY PHOTOS!