Just picked up a technika mount variable extension lens board. This gives 3 inches extension to 5 inches extension.(variable) It was made in Germany per the stamping on the rear of the board. Anyone have any info on it? Pricing, make or whatnot? Sure works well for adding extra length for a 500 Nikkor tele on the shorter bellows 4x5's and gives a bit more flexibility to macro work as the adjustable length makes it easier to finetune focus rather than moving a tripod back & forth. The guy I got it from has another if anyone is interested.