07-11-2016, 01:50 PM
I think the rule is that there are no rules.
The early DOs had odd out-of-focus highlights but e.g. the Nikkor 300mm f/4 PF is quite decent there (although I am not sure whether its bokeh is perfect really).
I suspect that if Canon will ever offer a DO in this class, they'll keep the conventional lens for quite a while as a parallel offering ... simply because it's cheaper.
The early DOs had odd out-of-focus highlights but e.g. the Nikkor 300mm f/4 PF is quite decent there (although I am not sure whether its bokeh is perfect really).
I suspect that if Canon will ever offer a DO in this class, they'll keep the conventional lens for quite a while as a parallel offering ... simply because it's cheaper.