Originally posted by krebsy75 Does Pentax manufacturer its own glass elements?
Maybe for one or two specific glass types that they
might have developed. But by and large, no. There are a few big manufacturers of glass types in the world : Corning, Schott, Hoya, a few others, and their glass is used by everyone in the optical industry (not only photography).
Originally posted by krebsy75 It really burns my butt that Pentax increased lens pricing AND moved manufacturing from Japan to Vietnam. Japan has a rich history of manufacturing quality products. The result is added value and maybe a better built product.
Japan, China, Vietnam, matters not in the quality of the product. What matters is the manufacturing process, how quality control is put in place, what tests are run, and how the workers are trained and supervised. Not where they are born.
For the record, when Pentax was making lenses in Japan they were manufacturing all those cheap FA zoom lenses not worth their weight. Now that they make their lenses elsewhere there are no dogs in their lineup, and every reviewer on the planet praises the quality of their products.