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Re: [OM] pics of shift lenses

Subject: Re: [OM] pics of shift lenses
From: Gary Reese <pcacala@xxxxxxxxxxxxx>
Date: Fri, 04 Feb 2000 08:27:10 -0800
Goosnargh writes:

<< On a side note, any reason the 180/2, 250/2 and 350/2.8 are white? >>

To minimize heat build-up.  The infinity stop (point in the helical at
which you are focused on infinity) changes with temperature, so a lens
less apt to retain heat from sunlight is less apt to have focus shifts
when moved from shade to sunlight exposure.

Gary Reese
Las Vegas, NV

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