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Hoya HMC CP filter
Hi,
Good day! I have just started photography as my hobby. I recently bought Canon Rebel XTI. I used Hoya UV filters on both my wide angle and telephoto lenses. However, I still get pictures with reflections ( in shooting through glass windows or water reflections) even if I use my Hoya Circular Polarizing filter. Can you please help me how to eliminate this unwanted reflections? any help is appreciated. Thanks |
#2
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Hoya HMC CP filter
"Eydz" wrote in message
ups.com... Hi, Good day! I have just started photography as my hobby. I recently bought Canon Rebel XTI. I used Hoya UV filters on both my wide angle and telephoto lenses. However, I still get pictures with reflections ( in shooting through glass windows or water reflections) even if I use my Hoya Circular Polarizing filter. Can you please help me how to eliminate this unwanted reflections? any help is appreciated. Thanks They only work if the reflection (or other light) is plane polarised, and you have to find what orientation the polarisation is by rotating the filter in its holder, and observing the effect - preferably on the camera, see below. The light from a blue sky is polarised so reflections in car windscreens may disappear (if you're lucky), but the light from clouds isn't and you'll see hardly any effect. Also, light reflecting off water is polarised at certain angles (- do a Google for "Brewster angle") and setting your polariser at the correct angle will help you see below the surface of some ponds. (If you try observing the effect of the filter when off the camera, be aware that CP filters are direction sensitive, and will show no effect if you hold them up to your eye the wrong way round.) HTH -- M Stewart Milton Keynes, UK -- Posted via a free Usenet account from http://www.teranews.com |
#3
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Hoya HMC CP filter
"Eydz" skrev i melding ups.com... Hi, Good day! I have just started photography as my hobby. I recently bought Canon Rebel XTI. I used Hoya UV filters on both my wide angle and telephoto lenses. However, I still get pictures with reflections ( in shooting through glass windows or water reflections) even if I use my Hoya Circular Polarizing filter. Can you please help me how to eliminate this unwanted reflections? any help is appreciated. Thanks Two things to note about polarizer filters: Firstly, they rotate, the effect of the filter will vary from zero to max depending on the rotation. Second, when it comes to cutting reflections from glass or water (or anything else for that matter) the filter is only really effective at a fairly shallow angle to the reflecting surface, something like 35 degrees. Move away from this optimal angle, and the effect of the filter will very rapidly decrease to zero. So, you must be at the optimal angle to glass or water surface, AND the filter must be rotated to its optimal position. Given these two prerequisites, a polarizer can be surprisingly effective at removing reflections. |
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