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Thread: some qns about 7-14mm

  1. #1
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    Default some qns about 7-14mm

    Hi Oilypians,

    anyone of you guys have 7-14? care to share how do you use CPL or soft ND with it?

  2. #2

    Default Re: some qns about 7-14mm

    You can't as there is no filter thread and front lens element is not flat but convex and protrudes out conspicuously. Also, the angle of view at 7mm is so wide that any filter would have to be ridiculously big in order not to vignet.

  3. #3
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    Default Re: some qns about 7-14mm

    They should have had the "drop-in" filter option like their large lenses uses (300mm).

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    Default Re: some qns about 7-14mm

    thanks guys. looks like some extensive research have to be done before commiting.

  5. #5

    Default Re: some qns about 7-14mm

    Anyway, according to Ken Rockwell, the use of polarisers is to be avoided for ultra-wide lenses because of the weird effects they created. This is because the polarization of the sky varies from one end of the sky to the other. It is not a problem with a tele lens but the angle of view is so wide with a ultra-wide and covers such a broad expanse that the polarizing effect will vary greatly across the sky, so much so that it is possible to get a dark area in the sky in one part of the image and light area in another.

    http://www.kenrockwell.com/tech/filters.htm

  6. #6
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    Default Re: some qns about 7-14mm

    how wide is wide before we see this thing from happening? anyway 7-14 cant use any CPL. i was wondering whether "Cokin X-PRO Filters"(170mm x 130mm) can be use for 7-14?

    btw try to read KRW website with lots of salt.

  7. #7

    Default Re: some qns about 7-14mm

    Well, I have no problem using a circular polariser at 11mm on the ZD 11-22mm, so I would guess there could be problem only near the 7mm end of the ZD 7-14mm.

    Maybe the Cokin X-Pro filters could be used on the ZD 7-14mm but the cost would be prohibitive. The cost (from B&H Photo) of fixing just a X-Pro Circular Polariser onto the ZD 7-14mm would comprise:
    (a) X-Pro Filter Holder: US$54.95
    (b) X-Pro Universal Adapter Ring: US$66.95
    (c) X-Pro Circular Polariser: US$330.95 !!!
    Total: US$452.85 before air freight & GST

  8. #8
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    Default Re: some qns about 7-14mm

    Whoa! so cheap

    now we just need some early adopters for this!

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    Default Re: some qns about 7-14mm

    NMSS_2, getting your 7-14 soon?

  10. #10
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    Default Re: some qns about 7-14mm

    Just wondering how you are going to mount the filter?

  11. #11

    Default Re: some qns about 7-14mm

    The Cokin X-Pro Universal Adapter is used for those lenses (up to 118mm) with non-standard threads or damaged threads and is attached to the lens body itself. In the case of the 7-14mm, it might be possible to attach to the built-in lens hood.



    What do you think? Care to give it a try?

  12. #12
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    Default Re: some qns about 7-14mm

    Quote Originally Posted by shchow
    NMSS_2, getting your 7-14 soon?
    just trying to get my hobby in check. no e-3 in sight yet so ...... thinking alot more of 7-14!

  13. #13
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    Cool Re: some qns about 7-14mm

    Quote Originally Posted by NMSS_2
    just trying to get my hobby in check. no e-3 in sight yet so ...... thinking alot more of 7-14!
    MTL 7-14 go, go, go

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