Fort Victoria

RFA Fort Victoria in drydock at the Camel Laird shipyard in Birkenhead. Apparently a £47m refit...

This is my first blip using the new 'dual-iso' feature that has been added to the excellent Magic Lantern software for Canon DSLRs.

My semi-geek understanding is that you choose ISO values for the highlights and the shadows and then it records these in alternating lines on the sensor. So what you get out is a bizarre stripy photo. Stick it through the free CR2HDR processing software and it resolves the two into a DNG that can be edited in Photoshop's RAW processing. And with a little fiddling - voila!

It's not perfect - there's some quite obvious weird stuff going on around the crane towers. But still looks more convincing than most of my attempts at HDR and has the advantage of only needing one shot - so possible to get HDR action shots in theory.