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Author 
Date 
Re: A Left Of Field Question 
Walter Glover  1:21 5 May 03 
We all have Acros to bear! 
Walter Glover  18:20 25 Apr 03 
Re: We all have Acros to bear! 
Phil  7:00 26 Apr 03 
Re: We all have Acros to bear! 
Walter Glover  23:09 26 Apr 03 
Re: We all have Acros to bear! 
Phil  8:23 27 Apr 03 
Re: We all have Acros to bear! 
Walter Glover  16:36 27 Apr 03 
Re: We all have Acros to bear! 
Fred Newman  12:37 30 Apr 03 
Re: We all have Acros to bear! 
Walter Glover  4:19 1 May 03 
Re: We all have Acros to bear! 
Brian Mikiten  6:30 1 Jun 03 
BTZS Down-Under 
Walter Glover  20:41 15 Apr 03 
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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