It's tough to find the original hood that comes with this lens nowadays, I remembered the one I bought last time comes with the hood. On cropped cameras it would be safe to use any generic 77mm screw on hood but to be sure, test it on the spot to make sure there's no vignetting.
I lost the original hood to this old lens which wasnt very effective anyway (round and short type). Without the hood, flare was quite prominent. Will be using the Tokina lens on my 5D mk2. May i ask the purpose of stepping up to 82mm? Is it to prevent vignetting at 28mm wide? Need to look out for any brands or a generic hood would do?
i mean use your imagination and experiment here ..... after stepping up to 82mm you can just buy a 2nd hand cheapo 82mm filter .... unscrew and throw away the filter glass and just use the blank filter ring on the step up ring as a mini hood .... or even stack 2 of these blank filters