Only one filter may be attached?

Discussion in 'Photography Beginners' Forum' started by SPL Tech1, Sep 20, 2008.

  1. SPL Tech1

    SPL Tech1 TPF Noob!

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    The manual for my stock EF28 - 135 mm lens that came with my Canon 40D says I can only use one filter at a time. Well I regularly use a polarizer and a UV filter at the same time. Is that a problem? Why does it say I can only use one at a time?
     
  2. potownrob

    potownrob TPF Noob!

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  3. Alex_B

    Alex_B No longer a newbie, moving up!

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    Why would you do that? The UV will not help your images at all.

    I accidentally stacked polariser and UV recently, and of course in the ultra wide angel range I got strong corner shading since the filters rings added together were too thick.

    However, this would not affect you at 28mm on a crop frame like yours though. So if you use excellent filter glass, you'd probably fine with a UV and a polariser stacked together. With cheap glass, flare and other effects might occur though.

    Also, there are cases where you would need to stack filters, just your case is useless.
     
  4. TamiyaGuy

    TamiyaGuy No longer a newbie, moving up!

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    I think it's so Canon don't get a ton of complaints that people stacked 4 filters on top of each other, then found that they got vignetting at 28mm :). Basically, so long as you don't get vignetting yourself (or you want that effect), and the image quality degradation doesn't bother you, you will be fine.
     

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