Since I wanted to equip a few less frequently used lenses with UV filters in addition to my Canon L lenses, I took a chance on a trial and ordered for the cheap Hoya HMC. The surprise was great, because the quality of the remuneration and the glass and the aluminum version is obvious, despite the low price excellent - just the same as were introduced as these filters more than 20 years ago. While you have to experience for some products, unfortunately, that they are getting worse, while the manufacturers 'above' new, more expensive product lines introduced, the renowned optics company Hoya himself has remained true here. This adjustment to the customer and its products towards deserves recognition. Certainly there are other manufacturers of Hoya and now even more sophisticated filters, but for all-round use, the "normal" Hoya HMC are still a very excellent choice. This is confirmed by independent reviews, in which the Hoya HMC fared better than most more expensive filters in the optical power. Incidentally, the optical glasses themselves Hoya ago and is a large manufacturer of ophthalmic lenses, for example, also.
According Hoya HMC Compensation is a proprietary process in which the layers of coating are sublimated under high temperature in the glass surface. This makes the compensation is much more resistant than the simple vapor-deposited remuneration of most other manufacturers. These high quality I can confirm from experience.
Only at very high-quality lenses, which I prefer to a brass socket and an extremely anti-reflection and easy to clean compensation, or if a special flat filter holder is required when a wide-angle lens, I will continue to B + W MRC (XS-Pro) UV filters Insert. As normal "everyday filters" the Hoya HMC mind recaptured earned in my camera case its place.
