I have been pleased with the performance of Jackson lenses, like anything else the more you spend the better they get. None of the auto lenses like the cold, just like lcd displays they quit functioning when you turn on the freezer. I do not know what they offer that will fit a pancake, but I can tell you they back up there products (warranty) without any problems, at least for me. As a side note, I do not think you would have any issues with anything OPTREL makes, they tend to be very high quality.