Report on 4 batches, with batch numbers
If it helps, here are some batch numbers and what I found with them.
Originally Posted by Alpenhause
67821601, sold as Rollei Digibase 200. I have tried 4 rolls. 3 were very strongly yellow at the beginning of the roll, tapering off to still markedly yellow on the last frames. 1 roll was markedly yellow on the first frames, slightly yellow on the last frames.
67821601, sold as Rollei Digibase 200. I have tried 4 rolls. One was like the least bad of batch 601 above, markedly yellow at the beginning, slightly yellow at the end. 3 were noticeably yellow at the beginning, very mildly yellow at all at the end.
67821606, sold as Lomography XPro 200. I have tried only one roll, markedly yellow at the beginning, slightly yellow at the end. (I tried a roll of Lomography XPro 100 at the same time, it seemed to be Lomo-labelled Kodak Elitechrome 100; no wonder Lomo no longer sell it. The colors were all as one expects from Elitechrome 100, no sign of yellowing.)
67821607, sold as Rollei Crossbird. I have tried only one roll, markedly yellow at the beginning, very mildly yellow at the end.
In each case, I bought several rolls, and am now left with film I am not sure what to do with. The last few frames on rolls from batches 602, 606 and 607 look almost as good as the sample photographs shown from film sold by Wittner, and I have ordered some from Wittner and plan to shoot a roll of each of the above in parallel with a roll from Wittner.
A few more comments:
The film is definitely not planned to be yellow to correct for the blue tint possibly produced in aerial photography from 5 thousand or 10 thousand metres. Firstly, the yellow cast varies from start to end of the film. Secondly, I shot photographs on a commercial flight over Greenland, at about 10 thousand metres, on a roll of batch 601 and a roll of Ektachrome 100G at the same time. The snow on E100G was white, the snow on Digibase 200 was strongly yellow.
The yellow is nothing to do with poor processing - I have got the same results whether the film was home processed or commercially processed.
The yellow cast is not due to bad storage of master rolls, as it varies from strong at the beginning of 35mm rolls, to less at the end of rolls. It could to be due to:
Bad practice in spooling individual rolls of 35mm film, leading to some, or a lot, of light piping down the roll.
Poor quality light trapping felt on the 35 mm film canisters.
Storage in very bad conditions, leading to the film on the outside of the film canister getting a strong yellow fog, the film near the center of the canister being less affected.
I was very disappointed in the results, except a few of the last frames on some rolls, especially after reading excellent reviews from several years ago. I do look forward to trying the film packaged by Wittner, and shall not buy any more of the film labelled Rollei and spooled by Maco, until either Maco admit what happened, or we get reports of uniformly good film coming from Maco again.
Many thanks for all the reports posted in this thread.