Hi Miguel, you need even more opinions
Well, here are my 2cents:
- Use UV-filters only, if
you have probs keeping your front-lenses clean. I tried a long time to go without, but finally gave up (mostly due to spray from rain or the sea)
- pol-filters are very special filters, believe me. It's correct that you cannot simulate the results of a pol-filter by SW (in post-processing). But if you feel you need one, buy it first for your wide to medium-tele lenses.
- you can by a filter for the largest lens you have and adapt it to the smaller ones with step-down threads (don't know whether this is the right term
). This is much cheaper than buying a filter for each lens.
Now to the coating: As each filter adds two additional glass/air-borders, that is never good
for IQ. What can you do to make sure that the impact of a filter on IQ is minimal? Buy a coated filter! Why? Because coated filters reduce reflections that either reduce the light going through or play ping-pong between your front-lens and the back-side of the filter.
So you need coating on both
sides of the filter. And as the most effective way to stop reflections is multi-coating, if you want the best optical performance/IQ, buy multi-coated filters.
As to the manufacturers, Hoya is approved and not too expensive, B&W is approved but seems more expensive and Tiffen seems to be so-so (quality-wise). Me, I buy Hoya superHMC, but don't get any money, when I recommend them...
Thomas (beware: Nikon-fanboy and moderator!) My Lens Reviews
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