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	Phil Davis  | 
	9:15 23 Apr 05  | 
	
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	Miles Nelson  | 
	7:12 24 Apr 05  | 
	
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	Phil Davis  | 
	7:48 24 Apr 05  | 
	
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	Miles Nelson  | 
	8:39 24 Apr 05  | 
	
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	personal speed reference point  |  
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	Miles Nelson  | 
	4:57 19 Apr 05  | 
	
	
		
		
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		I have decided to recalibrate my btzs darkroom.  Phil recommended that we use Delta 100 film.  Are there any other film dev, combinations that are suitable?  I have lots of 100Tmax on hand and I would have to order Delta100.  I have DDS, D76,xtol, TmaxRS and PMK-Pyro. By the way in all the reading I have done concerning the BTZS methods there is no reference to the impotance of checking or calibrating your actual lense shutter speeds.  I quess this is so basic as not to need emphasing.  I just finished doing that little exercise and found that my newer copals were right onthe money but my older others were signifigantly off.  Can I reasonably do something about those?   |  
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	Phil Davis  | 
	7:13 19 Apr 05  | 
	
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	Miles  | 
	12:25 19 Apr 05  | 
	
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	Mike Pry  | 
	17:59 11 Apr 05  | 
	
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	Phil Davis  | 
	19:34 11 Apr 05  | 
	
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	Mike Pry  | 
	3:29 12 Apr 05  | 
	
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