This is one of the sharpest lens in the world ( maybe it is the sharpest.)
It is a pricy lens at $7995 retailed listed price.
Aside from the price tag, the lens weights 5.5 lbs with 100mm thread size.
Even with 2X TC ( 360mm F4 )
it out sharp the Tamron 300mm 2.8.
It is sharper than the Canon EF 200mm 1.8 L lens and Contax Zeiss 200mm F2
lens as well.
However, manual focus and stop down metering is not for everyone.
Unless you plan to shoot at wide open all the time, cheaper
AF lens with IS alternatives at slower stop probably will do the job right.