Re-rating a stock mid roll

[Alex Worster]

Is it unadvisable to re-rate a stock mid roll. Let's say I'm shooting 500 and I shoot a gray card rating the stock at 320 for extra density. I shoot half the roll or so then decide I'd like it to look a little thin or I need the stop or whatever so I shoot another gray card rated at 1000 and go on shooting. Will I have a problem come transfer time or as long as I let whoever is doing the transfer know what I did should it be fine? Provided I exposed all the cards as I intended.

[David Mullen ASC]

No problem as long as you are there to supervise the transfer or if not, your camera reports mention to time to each grey scale when it appears. It's the same issue when you change the color balance on the same roll, like moving into a space with green fluorescents that you want the colorist to correct.

[Alex Worster]

Thanks.