Canon News has uncovered a patent for an APS-C 100-400mm F5.6-7.1 optical formula. (Richard also messed it up by not noticing it was APS-C at first)
Does this mean that the EOS-M is getting a super telephoto consumer lens? The optical elements are fairly lightweight and the lens optics diameter would be somewhere around 52mm, which seems to fit with the EOS-M ecosystem. Or is this a sign of an RF APS-C camera coming out. The need for an APS-C 100-400 is puzzling if it's for the RF mount though.
Canon RF/EF-M 100-400mm f/5.6-7.1:
- Focal length: 119.97mm 218.00mm 360.96mm
- F-Number: 5.50 6.50 7.10
- Half angle of view: 6.50° 3.59° 2.17°
- Image height: 13.66mm 13.66mm 13.66mm
- Total lens length: 179.62mm 192.93mm 233.56mm
- BF: 15.03mm 15.03mm 15.04mm
Canon appears to be going a different direction with their longer lenses for their mirrorless mounts than the other manufacturers. They seem to be more interested in reducing the size and making the usability more comfortable. It also helps that they have a bunch of stellar EF lenses that will work just fine with your mirrorless cameras if you want the faster speeds.