Steve Goldstein
Subscriber
Since starting photography in the early 1970s I've used 6-1/2" tall Nikor developing tanks - this is the size that holds four 35mm or two 120 reels. When processing 120 I always use two reels in the tank even if I'm only developing one roll in order to minimize the "pistoning" that occurs during agitation. But even with two 120 reels loaded there's still empty space at the top, and the remaining up-and-down movement of the reels during agitation has always bothered me even if I can't point to any defects this might have caused over the decades.
At a recent camera show I picked up a Nikor 16mm reel (for 39" film length) on a whim because it was cheap. There's just enough room for it on top of the two 120 reels. My non-problem has been solved!
At a recent camera show I picked up a Nikor 16mm reel (for 39" film length) on a whim because it was cheap. There's just enough room for it on top of the two 120 reels. My non-problem has been solved!

