sergio_caetano

I reinforce Pat4s post. This is a LARGE format site.(Or isn't?).

Abernathy, change photo store, the guy behind the counter has a SUPER

SMALL BRAIN.

I have a 4x5" Omega D2 (variable condenser) enlarger with a serial number 220 372. Does somebody know when it was made ? Thanks a lot.

Some weeks ago I bought a Boss Screen Ground Glass. Us$156.95 in B&H. Waste of money. The instruction paper says:"The wax/paraffine layer is susceptible of temperature and will melt above 50 Celsius. Bubbles will appear in the screen." Don't believe on it. Not more than 35 Celsius was enough to many small bubbles appear. So, LF fellows, if you are planning to make a trip to Greenland or Ushuaia, buy the Boss Screen, made in Netherlands, specially designed for these conditions, and enjoy the so called focus advantage.

Being myself a D23 user since 20 years ago when I started seeing/reading Adams images/literature, presently my experiences have been with TMax100. Perhaps useful for you as starting points here are "MY" ( TMax100 4x5 with D23 ) standards:

( N-1) D23 1:3 EI=25 9min 20 C ;

( N ) D23 1:3 EI=50 12min 20 C ;

(N+1) D23 1:1 EI=100 12min 20 C ;

 

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Developing method : ordinary PVC tubes (see thread : Older messages/Darkroom/4x5 processing techniques/Robert Patrick jan26 1998)

 

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If you try that, let us know the results.

Good luck.

 

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(Sergio Caetano)