RE: [APML] California Desert Night Sky

["Thomas W. Earle" <twade@bmi.net>]

Wei-Hao,

Now that's a field of view (i.e. Pentax 67 35 mm F/4.5 lens on 4x5
film).  It's more impressive that he shot the lens wide open.  These
lenses are notorious for producing sub-par results at wide open. He
must have gotten the "pick of the lot".  Although, at the posted
scale, it is difficult to judge the aberrations near the edge.  I've
read, you have to stop this lens down to F/8.0 for good results near
the edge.

Wade


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