Friday, March 18, 2016

Comparing the Optical Formulae of DFA*70-200 F2.8 Vs FA*80-200 F2.8

19 Elements in 16 Groups; Source: Ricoh Imaging

16 Elements in 13 Groups; Source: Bdimitrov's K-mount Page

Related Posts

Creative Commons License
RiceHigh's Pentax Blog by RiceHigh is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.