02-22-2016, 12:55 PM
(This post was last modified: 02-22-2016, 12:56 PM by Brightcolours.)
85mm f1.8:
13 elements in 9 groups. 700 (!) grams.
http://www.tamron.co.jp/en/lineup/f016/index.html
New 90mm f2.8:
14 elements in 11 groups, 610 grams.
http://www.tamron.co.jp/en/lineup/f017/index.html
Old 90mm f2.8 USD VC macro:
So, the same optics formulation as the old style one.
13 elements in 9 groups. 700 (!) grams.
http://www.tamron.co.jp/en/lineup/f016/index.html
New 90mm f2.8:
14 elements in 11 groups, 610 grams.
http://www.tamron.co.jp/en/lineup/f017/index.html
Old 90mm f2.8 USD VC macro:
So, the same optics formulation as the old style one.