It sounds like the rep seems to think Nano coating is some sort of spray-on filter added to the the front of the lens, which it obviously isn't. Even a scratch on front element would have no visible effect on image quality as seen in the real world. Polish the car paint to remove the scratch; Degreasing to remove the oil and residue on car paint, to make coating be tightly attached on car paint. If they do, it might be possible to correct a lens to a more neutral look, making coatings less of an issue.

In terms of overall IQ improvement, the improved transmission should also improve contrast, even at a microcontrast level. A coating with Nanotol Household Protector protects all smooth surfaces in the household from dirt and grease and guarantees perfect, long lasting gloss without fingerprints on windows, hobs, worktops etc. I'll be more specific: I suspect it makes a significant improvement in detail clarity and micro-contrast. It creates a protective barrier that keeps dirt, dust, bacteria, mould , or mildew from the surface .em>
Now to me, the implication of this is that Nano-crystal coating is a naturally delicate material, incapable of withstanding mechanical abrasion.

p>Having said that, I have a couple of lenses where the front element is so large and so close to the filter rim that it would regularly get thumbprinted or scuffed by the lenscap if not for the filter. or less, the grand total transmission loss for any lens, even complex lenses with many element groups, will remain very low (i. Please Contact us at any time if you have any questions, we will give you the most satisfactory solution within 24 hours. As such, transmission is not ideal, and up to several percent of incident light can be lost for any given wavelength, usually resulting in 1-2% total loss in transmission PER COATED ELEMENT/GROUP.I've experienced first hand what horrible quality can result from using such filters, and over the course of 4 years, using about 10 different lenses all the time i've never once scratched a lens. I assume Lens rentals clean 100's or lenses and cameras every day and many threads above agree with what Lensrentals say. zooms, all with nano coating, Nikon published an interview with two of their engineers about nano coating:

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