Overall a very nice addition and has sync IS. A modest positive surprise is
that it works with both TC's 1.4X and 2X. Not that is needs any more mag but as
expected the
working distance is a bit tight. Close focusing distance in S macro mode (odd
ball switch which moves lens elements and lose max aperture goes to F5 or F5.6,
(reviews were discordant)) is 8.8 " with working distance 2.5." (2:1
magnification). Working distance at 1:1 only 3.7". Effective focal length at
1:1 about 112mm not 180 mm ---- but that isn't totally fair even if technically
correct as really should use focus distance at 1:2 to calculate. I could not
find that. Anyway, some of that is related to the MFT format and some to focal
length shortening. It really is only a 180 mm FF equivalent fov at infinity.
For skittish critters a high-quality long FL zoom with achromatic CU diopter
may still be a tad better than the new lnes by itself. A 1.4 TC with the new
lens might be a very good choice, however. Testing should be done.
https://tinyurl.com/32kvw8jm
Macro Mike
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