Comments on: Sightseeing in Washington, DC

By: Andy

Andy — Sat, 15 May 2010 10:27:06 +0000

Hi. My wife and I write free online city guides and we have more recommendations of what to see in Washington DC. Take a look... Washington City Guide Best wishes Andy

By: RefeTafeLauri

RefeTafeLauri — Wed, 07 Oct 2009 00:17:39 +0000

Intresting, this was actually a very great read! thanks

By: Dave

Dave — Tue, 06 Oct 2009 10:10:44 +0000

Hi Paul! Well: to protect the lens you want a UV filter. The polarizer is just for occasional use; it also cuts down the incoming light by 2-3 stops (so 1/4 to 1/8 the light, meaning a slower shutter speed or wider aperture is required).

There’s no possibility to get the effect afterwards in Photoshop. The polarizer blocks incoming light based on its polarization, and that information is lost when the light hits the sensor. :-/ You could apply a whole pile of color/levels/contrast tweaks to try and get the effect, but I still don’t think it would be the same as using the filter.

By: paul

paul — Tue, 06 Oct 2009 09:36:10 +0000

Nice comparison there with the polarised filters. I’m not sold on getting one yet, beside the fact that the protect the lens itself. I guess you could do all these adjustments in photoshop too ?
Paul
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