352: Sponge Foam Structure

Settings: f/11, 1/180, ISO 100, 50mm Pentacon M42, 88mm extension, 1/4 flash (bounced,) cable release, tripod. Colour and tone curve adjustments, 100% centre crop.

312: The Foam Cave

Not the inside of a stomach, but the interior of a tiled roof with sprayed-on insulation. Lots of weird bumps and blobs up here, and with a very fine foamy texture close up.

Settings: f/2.8, 1/60, ISO 400, 50mm Cosinon M42, 9mm extension. Levels and saturation adjustments.

306: Cornystyrene

Settings: f/8, 1/6, ISO 100, 35mm Photax-Paragon M42, 30mm extension, fluorescent lamp, tripod.

266: Tea Bubbles

I attached an enlarger lens to the camera with electrical tape to get this shot! Sharpness slightly better than I thought, but not amazing. The composition and foam could have turned out a bit better, but it's an interesting test nonetheless. It was quite difficult to focus the lens, as it only had an aperture ring and I had to move the camera to focus; plus it was f/4.5 wide open, so not a great VF image.

Settings: f/5.6, 1/180, ISO 100, 50mm Paterson 1:4.5 M39, 8mm M42 extension tube, 1.4 flash, black velvet, foil reflector, tripod.