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	|  | Walter Glover | 1:21 5 May 03 | 
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	|  | Walter Glover | 18:20 25 Apr 03 | 
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	|  | Phil | 7:00 26 Apr 03 | 
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	|  | Walter Glover | 23:09 26 Apr 03 | 
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	|  | Phil | 8:23 27 Apr 03 | 
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	|  | Walter Glover | 16:36 27 Apr 03 | 
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	|  | Fred Newman | 12:37 30 Apr 03 | 
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	|  | Walter Glover | 4:19 1 May 03 | 
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	|  | Brian Mikiten | 6:30 1 Jun 03 | 
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	|  | Walter Glover | 20:41 15 Apr 03 | 
	
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		| A discussion Forum for something as effective, straight forward and simple as BTZS promises to be a seldom utilised site. 
 I have been using the BTZS approach for a couple of years now and my negatives, and the subsequent prints from them, so exploirt very ounce of capabilty in the materials that I can hardly get enthused about printing from old pre-BTZS negs.
 
 I shoot 8x10, generally with HP5+ and occasionally with TMY.  I have two sets of data for each stock - one using Xtol 1+1 @ 24º in Jobo Expert drums and the other for Rodinal in trays @ 20º.  The abaility to chop and change between combinations while retaining all the essential information in the negative image is a new-found freedom I am really coming to cherish.
 
 I do have one more series of calibrations to perform and that is with the Rodinal.  I have been almost exclusively using a dilution of 1+100 but while this facilitates considerable compression with long SBRs it is nigh on impossible to go beyond a 6-stop range - the graph just flattens off.  So, I shall be running sets of 5 sheets in dilutions of at least 1+25 and 1+50 ... and possibly 1+75 ... so that as Agfa suggest I can make adjustments by a combination of both dilution and time.  (Probably more agitation with the stronger brews also.)  Anybody else been playing in this particular sand-pit?
 
 Thinking back to the good old bad old days I recall that Minor White suggested varying developer dilution to adjust mid-tone placements once the high and low points had been set.  I think it should prove interesting and informative.
 
 So far the most demanding application I have set the BTZS system to was a series of 8x10 studio nudes illuminated entirely by candlelight - with the candles being in shot.  A difficult and, to my mind adventuraous, situation which proved so easy to print and afforded me a great freedom of interpretation and printing expression.
 
 What can I say but: "Thanks ever so much, Phil Davis!"
 
 Walter Glover
 
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