Tamron Patents Big Zoom Lenses
The following patents for Tamron big zoom lenses have been spotted by asobinet:
- Tamron 400-1000mm f/10-11.5
- Tamron 250-700mm f/6.5-13
Asobinet does not specify if these are designed for FF or APS-C (but likely for FF).
The approach is similar to the one of Canon with the Canon RF200-800mm F6.3-9 IS USM: keep costs and size contained thanks to a slower aperture.
As far as long telephoto zooms goes, we Fujifilm shooters are currently covered by the Fujinon XF 150-600mm f/5.6-8 R LM.
Last but not least: if you look at Tamron lenses specifically designed for APS-C, then these are the current patents:
Down below the full details.