Cool, interesting to see that the gamma difference between BTZS and tray development was so small. Personally I'd find it negligible, but I guess purists would disagree. Did you use the same developer dilution and development time for both sheets?
Alright, thanks. Looks like your guesstimate of the extended tray time was very close to perfect indeed.
Sigh. I'm coming down to the end of my Efke stash too.
I am NOT looking forward to the day when I run out of Efke film. It curls like crazy and is frustratingly easy to damage but I have never found another film to replace it. I do like a couple of Adox and Rollei options but they still are not the same.
Andy. Have you used any sheets from your 4x5 box yet? If so, how did they turn out?
Andrew, I used my last of it in 120 roll film on a very long backpack trip a decade ago, using 6X9 backs on my little Ebony 4x5 folder. The orthopan sensitivity handles up to a 25 red filter fine, but anything stronger like 29 just acts a neutral density, and puts shadow values on the guillotine. And given the very high quality lenses I use, I was even able to get some exceptional 20X24 prints out of these, though my goal was just 16X20.
My companion on that trip was a Tech Pan addict who brought a fancy 6x6 with expensive Zeiss lenses. He wanted to improve his print tonality, so opted for Efke R25 too. At the start of the trip, he hid his van key in a little magnetic Hide a Key behind his front bumper. When we got back a couple weeks later, it was missing. Some chipmunk had apparently gotten in there, and it was already after dark. So we put on headlamps and started looking around, and about half an hour later, eventually saw something shiny back in the bushes. So we could finally start unpacking certain things and putting them in the van. ...
He was a machine-gunner type and had shot about 24 rolls of film. But he apparently forgot my warning that Efke roll film needs to be handled with extra caution and kept from strong direct light. And then I spotted him sorting out his exposed film spools end-on in a storage box while wearing his halogen headlamp. Two weeks of walking over a total of eight high altitude passes in stormy weather, half of it off trail, and him with a bandaged foot all the way back out, plus a couple damaged Zeiss lenses, and for what? Nearly all the rolls were fogged.
As for ACROS, shot my last 8X10 sheet about four years ago, and am now shooting my last box of 4x5. Their new ACROS II version, which I've tested in 120, has certain minor but distinct improvements, namely, a little more steepness in the toe, providing better deep shadow gradation, plus reduced blue sensitivity for sake of better sky rendering. But of course, the cost has gone way up too.
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