Fuji Lenses - IR Test Results

Started May 6, 2014 | Discussions thread
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Kevin Patrick Regular Member • Posts: 172
Fuji Lenses - IR Test Results

Since this seems to be a popular topic as of late here are the results of multiple tests I have performed on various Fuji lenses on my full-spectrum IR converted X-E1.  The included f-stop is where I have found a hotspot to first appear when using a wide open aperture as the starting point.  I used a B+W 092 filter for all tests.

16-50mm:   16mm - f16,   35mm - f16,   50mm - f16

50-230mm:   50mm - none,   135mm - f11,   230mm - none

18-55mm:   18mm - f4 to f5.6,   35mm - f5.6 to f8,   55mm - f8 to f11

55-200mm:   55mm - f16,   135mm - none,   200mm - none

27mm:   f5.6

14mm:   none

23mm:   none

35mm:   f16 to none

56mm:   f5.6 to f8

60mm:   f4 to f5.6

I have found that reducing exposure by 1/3 has improved the lens performance by one stop in many instances - hence the f-stop ranges.  Time permitting I will try to perform the same tests on the B+W 090 and 093 filters.

Fujifilm X-E1
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