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      |  | Date  |    |  
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	Jorge Gasteazoro  | 
	17:47 20 Feb 03  | 
	
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	Phil  | 
	18:28 20 Feb 03  | 
	
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	Jorge Gasteazoro  | 
	20:22 20 Feb 03  | 
	
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	David Mark  | 
	9:52 22 Jan 03  | 
	
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	Jorge Gasteazoro  | 
	0:04 2 Mar 03  | 
	
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	clay  | 
	15:05 21 Jan 03  | 
	
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	Phil  | 
	8:00 22 Jan 03  | 
	
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	Jorge Gasteazoro  | 
	17:50 20 Feb 03  | 
	
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	David Mark  | 
	8:43 14 Jan 03  | 
	
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	    | 
	Re: Minimum printing exposure and BTZS  |  
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	Phil  | 
	10:38 14 Jan 03  | 
	
	
		
		
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		The MPE serves in the Zone System as a sort of rudimentary densitometer that standardizes procedure enough to make zone gray comparisons more or less meaningful. It has no purpose in BTZS; although it's nice to have negatives that print at a more or less consistent exposure I think it's more important to print for best image quality rather than worrying about the actual exposure time.
  No, I wouldn't consider the MPE a useful test of negative quality. It's harmless enough as a rough check, but I wouldn't consider a negative that failed that test a total failure if it produced a fine print.   |  
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