Perhaps there has been a major shift of the magma mass below Grinnell, Iowa.
Chuck Norcutt
Ken Norton wrote:
> I just got wrapped up recalibrating my Zonemaster II. What a royal pain that
> little task was. For some reason everything about my darkroom was completely
> shifted and I couldn't get an accurate meter reading no matter what. One
> thing that had me completely puzzled was known combinations were way off.
> The only thing I can think of is a shift in color temperature of the
> enlarger bulb.
>
> But now I've got this Adox MCC paper fully calibrated with the meter and can
> get pretty bloody close with the meter on even the most difficult negative.
> This is beautiful stuff.
>
> Sometimes technology can really bite when you try to rely on it and it isn't
> working right.
>
> AG
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