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Contact Fred Newman and ViewCamera.com. You can make 8x10 prints from a step tablet that he will read and put through the BTZS software. He will send you the actual contrast grades for the filters...

I have had an Aristo V54 - high power, that I bought directly from Aristo. Seems like cost for the HP was about $120. Easy call from a net search, very good advice on the phone, less expensive,...

Call or send an email to Fred Newman. Excellent service. I have used the 4x5 for 2 years on extended backpacks with no problems at temperature ranges from below freezing to hot (Texas). A bit bulky...

The BTZS tubes are intended for maximum control of individual exposures, along with the testing system. Dilution of TMax-RS, usually at 1:9, gives extended "toe" and shadow detail - far superior...

I have used BTZS tubes with 4x5 TMX and TM-RS developer and others for years. If your concern is evenness of development or steaking, etc., there is no need for pre-soak with these tubes - even...

The big issue in the varied answers is the center of gravity - the line from your feet through your spine. Whether at center or top of bag, the heaviest weight (camera) should be inside/nearest the...

Midwest Photo Exchange (mpex.com) usually has a good assortment of Linhof accessories, new and used, and they almost always list new cable releases in ads.

Another vote for BTZS. Have used them for more than 5 years. 1) Consistently fine development. 2) Easy control of each negative for different development time in the same session (i.e. 2 negatives ...

www.phildavis.net

Thanks to all, esp. K. Crisp. I talked to Aristo yesterday. The V54 tests out with all the results that K. Crisp describes. Aristo recommends replacing old tubes, even Zone VI for improvement of...

Aristo's V54 tube is supposed to print VC papers without additional filtration/c orrection. Does anyone have experience? (Particularly with Polymax FA Fiber base paper and Polymax filters)...