Archived posting to the Leica Users Group, 2000/02/19

[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]

Subject: [Leica] Vignetting
From: Mike Johnston <michaeljohnston@ameritech.net>
Date: Sat, 19 Feb 2000 09:17:37 +0000

>>>Can you explain why the film thicknes matters?<<<

Tom,
Not really, although I could surmise based on simple geometry. But it
does seems to matter. Very thin-emulsion films show vignetting much more
clearly. If you don't believe it, take a lens known to vignette and
shoot the same scene on Ilford 100 Delta and Tri-X. The Delta will show
more vignetting. In fact, I usually run a roll of 100 Delta as my
stardard test for vignetting when I try out a lens.

- --Mike