Tamron 10-24mm Lens patent document surfaced over the web, the lens features F3.5-4.5 aperture range and made for DSLRs camera.
Patent Publication No. 2016-126280
Published 2016.7.11
Filing date 2015.1.8
Example 1
f 10.303 15.199 23.483
FNO = 3.6 -. 4.1 – 4.6
2ω = 111.70 – 86.59 – 62.07
Patent of Tamron
Negative positive and negative positive
Anti-vibration (third group)
Inner focus (rear group of the first group)
Tamron already have Tamron SP AF 10-24mm f 3.5-4.5 DI II lens (B&H) , I hope the upcoming lens will have big improvements and will create a big market space amon Nikon and Canon DSLR users.
