So I was reading a recent fall/winter 2017/18 publication and I noticed a field contributor's photo with the metadata. It clearly says Canon EF 70-200mm f/2.8 DO IS USM.
So my first thought was it's a typo. Maybe they meant a 70-300 DO. Well that lens is a variable aperture lens and it stated f2.8 IS. I also took note that the said photo was shot on a older Rebel XTi.
I've done a bit of digging online and I found the publication of a patent for this lens back in May 2016.
Could we assume it's a field testing of this lens?
I dunno. Anyone have any insight?
I'd be excited to see such a lens.