In this case I make an exception: Comet Panstarrs looks very strange. The coma is oval, die axis deviates from the anti-solar direction. The tail shows some wings which are not symmetric. Part of this habitus may be caused by unusual spectrum of dust particles' diameter. May be some kind of outburst or disintegration plays a role.
If you have the chance, please look at this comet. It is in Hercules and can be observed easily in the morning sky.
I used my 32 cm Newtonian and changed magnification between 96x and 144x. A Swan Band filter gave no effect: It is a dust rich comet.