>>3556308>>3556310>>3556318This is just my personal opinion here, but whenever I get a new lens, or camera, I want to test it. In order to do so, I bracket and also use the lens wide open (image related). Especially the latter is necessary to test focus accuracy and lens performance. It's probably impossible to do so with ISO3200.
>>3556318You could pull it to 800-1600. At that point you can also push a 400 film. We're talking about bw here I assume. No need to 'waste' a 3200 film here when there are plenty of cheaper 400 films.