Backscatter is a constant problem in underwater photography. So, the less water is lit up, the “cleaner” the image. I have always struggled with backscatter in these turbid UK waters and I have marvelled at the spotlessly clean images produced by other photographers. My buddy Trevor introduced me to the idea of “snoots”, which limit the area of lighting from a strobe, and which produce noticeably cleaner images, as well as opening up interesting lighting possibilities.
In his typically practical way, Trev uses various plant pots and cut-down drinks bottles to produce the fabulous lighting in his images. I’ve made my own “Trev-style” bottle snoot and very much enjoyed the images it has allowed me to produce.
Here’s a pic of Trev at work, with his Nikon 85mm macro lens and dioptre (which is why you can’t see the subject of his photo!).