Source: http://forum.xitek.com/thread-866434-1-1-1.html (in Simplified Chinese)
1. Original DA18-55 - 12 Elements in 9 Groups, One Aspherical Element:
2. DA18-55II - 11 Elements in 8 Groups, One ED (Extra Low Dispersion) Element:
3. DA18-55WR - 11 Elements in 8 Groups, One Aspherical Element and One ED Element:
4. DAL18-55 - 11 Elements in 8 Groups, No Aspherical nor ED Element of
Wednesday, 21 August 2013
(Different) Optical Constructions of the Four DA18-55 Zoom Lenses
Posted on 07:50 by Unknown
Subscribe to:
Post Comments (Atom)
0 comments:
Post a Comment