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#1 |
Regular Crew
Join Date: Mar 2007
Location: Atlanta, GA
Posts: 107
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Differences in Filter Lenses
Hey everyone. I've been reading this forum and its GREAT! I'm a new owner of a Canon XL1 so please excuse the errors, correct me if I'm wrong.
First of all, I just bought a 3 set Lense filter kit from Ebay. I know generally what each one does but I'm not sure when to use each one. I'm still not sure as to when to use the Polarized lenses and when to use the UV. And is it pointless to have the polarized lenses on even though the XL1 has an ND filter? |
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#2 | |
Major Player
Join Date: Aug 2004
Location: Durango, Colorado, USA
Posts: 711
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Quote:
A polarizing filter is designed to allow only parrallel light rays through the lens. This reduces diffraction from reflective surfaces like glass and water as well as saturating colors. A polarizing lens has two surfaces. The outer surface can be rotated to adjust the degree of clarity. Polarizing filters are most effective when the lens is pointed 90 degrees to the path of the sun. Polarizing filters reduce light passing through the lens, so perform a role like that of ND filters. Additional ND filters may or may not be useful. The decision will have to do with exposure, lighting conditions, and the look you want to achieve.
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Waldemar |
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#3 |
Wrangler
Join Date: Sep 2001
Location: Northern VA
Posts: 4,487
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With a close focusing camcorder with lots of depth of field, any dust, dirt, etc. on a filter can become apparent in the image, especially if side lit and it is bright so the lens is stopped down. In general, only use filters when they will provide a real benefit to the image you are recording.
I do not use a UV filter for most of my work. The lens hood provides some protection for most purposes around adults acting like adults.. The front glass in the XL1 standard lens is actually a piece of flat optical glass. It protects the VAP and provides no focusing or zoom services. Not cheap or easy to repace if it gets trashed, but worth noting its purpose. Try the filters in various test shooting situations to decide what their capabilites and benefits (and liabilities) are in terms of your shooting.
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dpalomaki@dspalomaki.com |
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#4 |
Regular Crew
Join Date: Mar 2007
Location: Atlanta, GA
Posts: 107
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#5 |
Inner Circle
Join Date: Dec 2003
Location: PERTH. W.A. AUSTRALIA.
Posts: 4,476
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Another effect of polarising filters is that they enable you to look into water at a shallower angle and be able to see past the surface reflection, reefs and weed beds under the water, sharks, that sort of thing.
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#6 | |
Major Player
Join Date: Aug 2004
Location: Durango, Colorado, USA
Posts: 711
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Quote:
You should be able to adjust the front filter to block all light from passing through the lens. Something to do when you are bored.
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Waldemar |
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#7 | |
Regular Crew
Join Date: Mar 2007
Location: Atlanta, GA
Posts: 107
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Hahaha... sounds like plan. |
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