Leica Vario-Elmar-R 80-200mm f/4
!!!!This article is under work, this page added just to get the first subpage added!!!
Typically I don't write articles about single lens, but it seems Leica Vario-Elmar-R 80-200mm f/4
is one of the best performing lenses I have ever tried, and is zoom lens offering much more
variable usage than fixel focal length lenses do, it's image quality deserved own page instead
just few words in lens page.
When shooting with 5DmkII I found out that lens creates easily IR hotspot into center of
image when shoot at apertures f/11-f/22. Based on this it seems that 5DmkII has very weak
IR filter. This means that with this lens some photoshopping is needed when shooting small
apertures. On other hand it means that 5DmkII should be pretty good IR camera, which 1DmkIII
wasn't since it has very strong IR filter resulting extreme long shutter speeds when used
with Hoya R72 filter.
This test can be also be used for evaluation of vignetting since it contains aperture
series from f/4 to f/11 (80mm) and f/4 to f/22 (135mm).