Good Pentax! There is no doubt! Samsung is a bit famous in electronics, but in optics, it can't compare with Pentax, an old optical manufacturer! In recent years, Samsung wants to get its hands on the SLR market, but it has no optical skills except a little electronic technology. You can only spend a lot of money to buy Pentax's optical technology, but making SLR lenses is not as simple as making glasses. Samsung can't absorb Pentax's century-old optical accomplishments in a short time.
At present, Samsung lens structures are all copied from Pentax lenses with the same specifications, which basically belong to Pentax OEM lenses. But don't forget the most important point, which is the SMC coating technology that Pentax is proud of in the optical field. This technology is Pentax's gold-lettered signboard, and this patent has not been sold to Samsung, so the anti-glare and dispersion control ability of Samsung lens is not as good as Pentax lens!