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Old Oct 1, 2011, 5:28 PM   #1
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Default What are these filters?

just got a new (used) lens and it came with these filters that I am not sure their use.
Two appear tinted about half way, and the filter is split so it can rotate once screwed on the lens.
Tiffin clear-sunrise
Tiffin clear-NDO.6

Then there is Crystal-Optics P.L. (slight gray tint look to it)
And a Tiffin HAZE-2A

Any help?
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Old Oct 1, 2011, 7:33 PM   #2
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Originally Posted by fofa View Post
just got a new (used) lens and it came with these filters that I am not sure their use.
Two appear tinted about half way, and the filter is split so it can rotate once screwed on the lens.
Tiffin clear-sunrise
That's a graduated color filter. It's intended for sunrises/sunsets, but can be used for any type of landscape photography. The filter rotates so you can position the graduation over the horizon with the clear part on the bottom, so the foreground will be unaltered, and the color part can alter the color of the sky.

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Tiffin clear-NDO.6
It's a Graduated Neutral Density (ND) (as in, gray) graduated filter. It serves the same purplse as the previous filter. The Optical Density of 0.6 means it only transmits 25% of the light, changing the exposure by two stops.

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Then there is Crystal-Optics P.L. (slight gray tint look to it)
That's a Polarizing filter. It can be used to reduce glare and reflections and to darken blue skies. It also rotates to vary the effect.

Linear Polarizing Filters can interfere with the Phase Detection Autofocus systems in dSLRs, while Circular Polarizing Filters do not. It's possible that, if it's old, it might be a Linear Polarizing Filter, and you may not want to use it.

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And a Tiffin HAZE-2A
This is a UV (ultraviolet) Haze filter. It blocks UV light which can cause haze or fog.
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Last edited by TCav; Oct 1, 2011 at 7:36 PM.
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Old Oct 1, 2011, 10:26 PM   #3
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Thanks for the answer.
helps a bunch
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Old Oct 3, 2011, 4:34 PM   #4
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Even if the polarizer is a linear, it might work all right with your camera. My suggestion is to play around with it and see what the effect is. My camera focuses reasonably well with a linear polarizer but it will occasionally cause metering problems, causing the camera to overexpose. It's not consistent so I can't dial in an Ev amount to compensate. You might find it useful occasionally.
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Old Oct 3, 2011, 4:50 PM   #5
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This may help you understand filters as well...

http://www.lensrentals.com/blog/2010...-about-filters
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