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01-16-2013, 10:24 PM   #1
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Does A Quality Filter...

assist or hamper the KIIs?

01-16-2013, 10:37 PM - 1 Like   #2
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Depends on the filter, all filters will degrade the image quality in a measurable way, but filters like CPLs and ND filters are needed to obtain a certain effect, so they help the overall image. It is just a matter of determining if the benefit outweighs the drawbacks.
01-16-2013, 10:38 PM   #3

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elliot is correct.
01-17-2013, 12:03 AM   #4

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What are you trying to achieve or adjust for?

I personally use only the filters Elliott mentioned when I want the corresponding effect. The rest of the time I don't use one, except occasionally when there's a high risk of water splashing or significant dust blowing on the front element. Instead I keep the hood mounted to protect from bumps.

Since a filter slightly degrades IQ, and I've had a filter break and scratch up my front element before, using a filter looks like a lose-lose proposition to me.

I believe I heard someone state that you could effectively turn the IIs into an IR camera simply by adding a filter, but I don't know how accurate this is. Other than that I don't know of any ways the IIs is different from other cameras regarding the use of filters.

Last edited by DSims; 01-17-2013 at 12:16 AM.
01-17-2013, 01:32 AM   #5
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I have been using quality CP filter on several lenses. The CP filter also greatly reduces moire in the few instances that it's shown up. Will add examples later.
01-17-2013, 03:45 AM   #6
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Generally they do help in creating an interesting image - but it comes at a price, usually in the form of filter flare or in more extreme cases a cheap filter can degrade the image quality of the lens.

QuoteOriginally posted by beachboy2 Quote
I have been using quality CP filter on several lenses. The CP filter also greatly reduces moire in the few instances that it's shown up.
If a filter is reducing moire then it is severely reducing contrast at the nyquist frequency. I work with Polarisers from Lee, Schneider and Hoya, and I have never come across a polariser that has any effect on moire.

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