A patent for a what looks to be a competitor to the 16-80mm f/2.8-4 VR that Nikon announced yesterday. Included in this patent is an optical formula we already have, the EF 24-105 f/3.5-5.6 IS STM, but it also shows an EF-S 15-105 f/2.8-5.6 IS STM (24-168mm in 35mm) for APS-C cameras.
Patent Publication No. 2015-118141
- Published 2015.6.25
- Filing date 2013.12.17
- Positive and negative positive and negative positive and negative positive 7-group zoom
- Inner focus (fourth group)