isn't much to dislike • one of the most sought after lenses • out • greatly distorts people and landscapes • is not coming off!update • does this at such extent • not one flaw • no • has a slow focusing motor.2 • not to mention the extra cost • has nothing to do with the function • haven't really felt the need to mount anything else • shame on you • is only $1k • may seem expensive • expensive • is a steal at $1,000.update • complain • little over a day