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Thread: Does the 72mm Super-Angulon XL need a center filter?

  1. #1

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    Does the 72mm Super-Angulon XL need a center filter?

    Do you scan your slides? If so, you probably want to see how things go first, before ponying up for a center filter.
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  2. #2

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    Re: looking for schneider center filter 4b

    I do scan them. When I see something like http://tomwestbrook.com/Photography/lf_lenses.html
    It gets me thinking. In bw it may be artistic. In slide color I'm not so sure..

  3. #3

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    Re: looking for schneider center filter 4b

    I never shot colour film/slide film so I can't comment on slides.

    I own a 72 XL and its centre filter and from my experience shooting b&w, the example in that link "exaggerates" the problem. I don't notice such a noticeable falloff except when using more pronounced shifts.

    In practice I only use the centre filter when the image absolutely requires it. Most of the time I shoot with an yellow/orange filter and accept the fact that there will be a gradient.

  4. #4

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    Re: looking for schneider center filter 4b

    If you are scanning it so easy to correct vignette in post (e.g. via Lightroom), that an expensive center filter might not worth the price.

  5. #5

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    Re: looking for schneider center filter 4b

    I can't speak for the 72 XL but I have the SS 150 XL and on 8x10 at infinity it's a HUGE problem even in B&W, I would NOT chance expensive transparency film.

    Even after heavy work adjusting the vignette in Lightroom and mind you this is only 4x10 this is what I got.

    Click image for larger version. 

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    It only seems to be an issue at infinity, on the converse, at close distances it's not really even an issue on 11x14 with no vignette adjustment in Lightroom as in this image ...

    Click image for larger version. 

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    So if the 72 XL is anywhere similar to the amount of falloff with the 150 XL then I would be hesitant with infinity images but suspect it would be ok at closer distances.

    Ultimately you should test first and see for yourself. Test some B&W to give you an idea.

  6. #6

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    Re: looking for schneider center filter 4b

    Stone, that's some pretty strong vignetting. If you're on a recent version of LR you might try a radial gradient correction.
    I presume that was not shot with a polarizing filter.
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  7. #7

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    Re: looking for schneider center filter 4b

    Thanks for the tip... I'll definitely try before I look further for the unicorn filter.. BH new price is mid 500...

  8. #8

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    Re: looking for schneider center filter 4b

    Quote Originally Posted by Paul Cunningham View Post
    Stone, that's some pretty strong vignetting. If you're on a recent version of LR you might try a radial gradient correction.
    I presume that was not shot with a polarizing filter.
    Red or Orange filter.

    Yea that image is AFTER the vignette gradient adjusting in LE4, it was much worse before.

    No it wasn't vignette from the filter as I use a 77mm on the rear and it only needs a 62mm, just to cover that question.

    This is the image that convinced me about the need for the CF filter.

    It also convinced me that Schneider lost their vision somewhere, or just wanted to make photographers spend more. This lens should have been sold with the filter included not as an accessory.

  9. #9

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    Re: looking for schneider center filter 4b

    Stone, can we see the 'before' version?
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  10. #10

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    Re: looking for schneider center filter 4b

    Schneider didn't lose its vision. It's just a matter of physics. Two stops light loss is the norm and others with one and one half stops loss use the tilting iris trick. But this only helps by one half stop. Typically, all ultra-wide lenses without CF behave precisely the same way in that regard. If one pushes the lens beyond it's advertised limits then the light loss is even greater. Ever seen uncorrected light loss of something like a Hypergon when pushed to its limits?

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