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Scheimpflug
Joined: 06 Feb 2010
Posts: 1888
Location: New Zealand / USA
Expire: 2011-11-18
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 Posted: Thu Mar 25, 2010 8:18 am Post subject: Polarizers on MF lenses with rotating front element? |
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Scheimpflug wrote:
Anyone have any tips for how to use a polarizer (or any other rotating filter) on the front of a lens with a rotating front focusing element? 
For example, I was trying to use a polarizer on the front of the D40's 18-55mm kit lens. When in Auto-Focus mode (Can you say those words here?  ), you can just set the filter, then lightly hold it while you half-press the shutter and the auto-focus does its job, maintaining the correct orientation of the filter.
However, when the switch is set to manual focus, then you end up with two pieces which independently rotate, and the 18-55 has very very little stiffness on the focus ring. Combine this with the fact that the 18-55 doesn't have a hard stop at infinity (at least mine), it pretty much becomes impossible. 
Anyone have any tips or tricks?  |
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SkedAddled
Joined: 19 Oct 2008
Posts: 1443
Location: Michigan, USA
Expire: 2021-08-12
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| Posted: Thu Mar 25, 2010 6:05 pm Post subject: |
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SkedAddled wrote:
I'm in the habit of rotating the PL filter for each shot anyway,
so it's never been an issue for me. I tend to focus first, then
rotate the PL to desired effect, then take the shot.
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FernandoB12
Joined: 26 Apr 2009
Posts: 231
Location: Rio de Janeiro, Brasil
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| Posted: Fri Mar 26, 2010 4:30 am Post subject: |
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FernandoB12 wrote:
I agree with SkedAddled.
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martinsmith99
Joined: 31 Aug 2008
Posts: 6950
Location: S Glos, UK
Expire: 2013-11-18
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| Posted: Fri Mar 26, 2010 7:13 am Post subject: |
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martinsmith99 wrote:
I just don't use CPLs on those lenses that rotate. After you've been here long enough you tend to have a few of the same focal length.
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Scheimpflug
Joined: 06 Feb 2010
Posts: 1888
Location: New Zealand / USA
Expire: 2011-11-18
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| Posted: Fri Mar 26, 2010 8:18 am Post subject: |
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Scheimpflug wrote:
| SkedAddled wrote: |
I'm in the habit of rotating the PL filter for each shot anyway,
so it's never been an issue for me. I tend to focus first, then
rotate the PL to desired effect, then take the shot. |
I would do that, but it would take two hands to do that on the 18-55. If you try to rotate the polarizer, you need a second hand to hold the focus in place, otherwise it turns that too... it's just that easy to turn. |
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