Need a protective filter, should I got with a UV or just a clear filter? For the 85L
Jesse said:Need a protective filter, should I got with a UV or just a clear filter? For the 85L
rfdesigner said:It's getting a little old now, but take a look at
http://www.lenstip.com/113.1-article-UV_filters_test.html
After 6 years most manufacturers will probably have upgraded/changed their products... so treat as a theory lesson rather than a bible.
You'll notice transmission isn't a major factor in the difference between filters...
neuroanatomist said:rfdesigner said:It's getting a little old now, but take a look at
http://www.lenstip.com/113.1-article-UV_filters_test.html
After 6 years most manufacturers will probably have upgraded/changed their products... so treat as a theory lesson rather than a bible.
You'll notice transmission isn't a major factor in the difference between filters...
For anyone looking at the Lenstip UV filter tests, like any test where a 'score' is generated, it's important to understand the factors that are used to generate that score.
For example, the B+W filter does better than the Hoya on visibile light transmission and flare, whereas the Hoya does better at blocking UV light (the latter accounts for a 5-point difference on their 40-point scale). In fact, if you look at the measured transmission curves, the reason the Hoya does better at blocking UV is that the left side of the bandpass starts at a slightly shorter wavelength - and that means the Hoya filter blocks UV better at the cost of also blocking some of the visible blue light. The Heliopan, on the other hand, is significantly worse than the Hoya in that it blocks even more of the blue light.
For the Lenstip tests, I recommend looking at the test results, not the summary table. For example, compare the top scoring Hoya with the 3rd place B+W - the Hoya scored 90% (36/40), the B+W scored 83% (33/40). But, when you look at the subscores which they provide that sum to a possible 40 pts, you see that B+W loses 1 pt for visible transmission, 1 pt for flare, and 5 pts for UV transmission. The Hoya loses 2 pts for visible transmission, 2 pts for flare, and gets 10/10 for UV transmission. But for a dSLR user, UV transmission is irrelevant...meaning that for a dSLR user, the B+W is the better filter according to Lenstip's testing, since it's better on both visible light transmission and flare...but if you look only at the summary, you'd get a different conclusion.
geekpower said:i'm using the Hoya HD and haven't had any complaints. they have remained scratch free, even when i absent mindedly clean them with my t-shirt instead of digging through my bag for a lens pen.