It'll be awhile before I get all the recent tests typed up and posted. But
this and the following lenses have a devoted following here, so I thought I
post the results.
400mm f/4 Tamron SP
Vignetting = B- @ f/4, A- @ f/5.6
Distortion = None
Aperture Center Corner
f/4 B+ B+
f/5.6 A- B+
f/8 A B+
f/11 A+ A-
f/16 A- A
f/22 A- A-
f/32 B B-
Notes: High contrast with remarkable image quality for a super telephoto,
optimum aperture appears to be f/11, based on evaluation of the entire frame.
As I previously mentioned, handling was great. It was quite a treat to see
the f/11 slide, which looked as good as the best image from a 50mm macro.
Gary Reese
Las Vegas, NV
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