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Author Topic: UV filter for 70-200mm f/2.8 IS II?  (Read 8007 times)

Viggo

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Re: UV filter for 70-200mm f/2.8 IS II?
« Reply #15 on: April 08, 2011, 05:04:37 AM »
The 14 is the only non-super telephoto that doesn't need a filter to be weathersealed.

Weathersealing is also my only reason for adding filters. If you can't see the difference, do you really care about it's refractive index??

I choose good filters and see what they're like, if I can tell they're giving me the same (or as close as possible to) IQ as without filter, then I sell them and buy a more expensive one, but I don't get a 150 dollar filter (and yes they cost that here in Norway) just because it's expensive, if I can't see the difference between a 30 dollar and 120 dollar filter, I don't buy the 120 dollar one, isn't that pretty obvious?
1dx, 24-70 L II, 50 Art, 200 f2.0 L

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Re: UV filter for 70-200mm f/2.8 IS II?
« Reply #15 on: April 08, 2011, 05:04:37 AM »

87vr6

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Re: UV filter for 70-200mm f/2.8 IS II?
« Reply #16 on: April 08, 2011, 10:42:48 AM »
I choose good filters and see what they're like, if I can tell they're giving me the same (or as close as possible to) IQ as without filter, then I sell them and buy a more expensive one, but I don't get a 150 dollar filter (and yes they cost that here in Norway) just because it's expensive, if I can't see the difference between a 30 dollar and 120 dollar filter, I don't buy the 120 dollar one, isn't that pretty obvious?


Finally, someone with some common sense. Everyone reads into "technical" details too much. The only difference I can see in my picture that are with or without filters are when I'm using a polarizer. Then again, I'm willing to pay for a decent/good filter (hoya as I stated earlier). Don't shoot into blinding lights and you won't have flares, unless that's what you're going for...

AKCalixto

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Re: UV filter for 70-200mm f/2.8 IS II?
« Reply #17 on: April 08, 2011, 02:22:09 PM »
I have the "B+W 77mm UV Haze 010 F-Pro Filter" on my 70-200 IS II and I am happy with it.

The filter code is BWUVMC77

neuroanatomist

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Re: UV filter for 70-200mm f/2.8 IS II?
« Reply #18 on: April 08, 2011, 03:25:25 PM »
1. I have not found a filter which does not add additional flare to my lenses - be it cheap kit lenses or be it Canon L lenses. For this reason I do not use filters unless needed (i.e. polarising filter).

I have B+W MRC UV filters on all my lenses.  As some have stated, a filter is required to complete the weather sealing on most L-lenses.  Besides the debateable 'protection' argument, the B+W MRC filters are more smudge resistant and easier to clean than the front element of most lenses (Canon has started applying a fluorine coating to the front and rear elements of their newest L lenses, to make them more smudge resistant and easier to clean).

I don't think that a high quality filter adds significant additional flare to a lens.  Since I am reluctant to make a claim like that without empirical evidence, below are some comparison shots (click for larger images).  I used a 5DII and two different lenses (a 70-200mm f/2.8L IS II @ 200mm, since that's the subject of this thread, and a 24-105mm f/4L IS @ 24mm), each shot wide open and at f/11 without and with a B+W MRC UV filter.  The appropraite lens hood was used.  Light source was a halogen lamp (150W equivalent) in the upper left corner of the frame, in an otherwise completely dark room (literally, a darkroom).  This is something of a worst-case scenario - a small, very bright light source, a black background, and no extraneous features in the image to mask the flare.

70-200mm f/2.8L IS II @ 200mm:



24-105mm f/4L IS @ 24mm:
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epsiloneri

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Re: UV filter for 70-200mm f/2.8 IS II?
« Reply #19 on: April 08, 2011, 04:49:32 PM »
Wow, pretty flares! Thanks for checking.

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Re: UV filter for 70-200mm f/2.8 IS II?
« Reply #19 on: April 08, 2011, 04:49:32 PM »