What's your technique (or advice/conjecture) when there is one dominant very strong channel - say blue - which blows the histogram to smithereens, with very little (or nominal) amount of the other other two channels (red & green)? Have had a couple of gigs lately which presented this conundrum at times and I'm still not sure of the best approach for optimum results.

I've had similar experiences before (red channel - but in different circumstances) but I'm wondering if it's better to reduce expose to bring down that dominant channel (lose detail in the others), or to stick with evaluative exposure "-ish" (I normally work fully manual with evaluative metering as a guide) meaning that that channel is 'unrescuably' blown but there is some detail in the others.

I've found that such a blown channel (any colour) results in what appears to be very poor focus/sharpness, even if focus is spot on (probably from the complete lack of detail); also ridiculously fast exposures are needed to bring it into check. Aaargh!

The problem being when there is far far far too much of one channel.