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    developing tri-x 400 @ iso 320

    Hello all, I recently shot some rolls of Tri-X 400 medium format at iso 320. I intend to develop them myself so I need advice as to which developer to use and what timing etc. I'm a newbie at this so any sharing of their experience would be much appreciated. Regards David
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    disassembling lens summaron m-mount 3.5cm f/3.5

    Hi, I'm trying to dismantle this lens for cleaning. Repair book says to remove rear retaining ring first but the photos are not clear. I can see three rings at the rear (inner, middle and outer). Can anybody help me out as to which one to remove first? Here is a photo of the rear. You can...